Re: [Wicket-user] About to use Wicket. ORM?

[Anders Peterson]

Choosing something more lightweight can be (in my opinion often is) good 
for productivity and maintainability.

One of the main things I look for when choosing libraries/frameworks is 
what dependencies they have - how many other frameworks do they force me 
to use (at specific versions). Another thing is how many minutes it 
takes me to get a basic understanding of the API.

ORM alternatives: I've used PriDE and recently found jLynx. Both are 
thin layers over jdbc with no dependencies (jLynx uses slf4j). 15min 
with either of these is all you need.

http://pride.sourceforge.net/
http://code.google.com/p/jlynx-persistence-framework/

/Anders

Evan Chooly wrote:
 Except the question wasn't about learning.  It's about being productive.
 And too often NIH is the anti-productivity pill.  Don't want a feature?
 Don't use it.  Wicket offers a lot that I don't use but I'd have to crazy
 not to use it because of that.
 
 On 7/24/07, davor-x [EMAIL PROTECTED] wrote:

 I'm making software for  10 years now. And I dont use / like orm. But
 that's
 me. I hate everything that's bloated with features. I hope wicket will not
 add new features in it's core. For my use, I've build a kind of my inhouse
 orm, I want to view the same data in, say a browsable and selectable list
 and then in a crud form - synchonized. The best and only way of learning -
 for me - is: DIY.

 --
 View this message in context:
 http://www.nabble.com/About-to-use-Wicket.-ORM--tf4131916.html#a11764361
 Sent from the Wicket - User mailing list archive at Nabble.com.


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Re: [Wicket-user] IBM to adopt Wicket as standard web framework

[Anders Peterson]

What does it take to become the victim of a joke like this? Can this be 
counted as an accomplishment? /Anders

Korbinian Bachl wrote:
 seems as they (the jokers) have no longer the patience to wait for april 1st
 :P 
 
 -Ursprüngliche Nachricht-
 Von: [EMAIL PROTECTED] 
 [mailto:[EMAIL PROTECTED] Im Auftrag 
 von Matej Knopp
 Gesendet: Montag, 26. März 2007 17:03
 An: wicket-user@lists.sourceforge.net
 Betreff: Re: [Wicket-user] IBM to adopt Wicket as standard 
 web framework

 http://mail-archives.apache.org/mod_mbox/tapestry-users/200504
 ..mbox/[EMAIL PROTECTED] 3e
 On 3/26/07, Alexandre Bairos [EMAIL PROTECTED] wrote:
 It´d be fantastic. But it's a bit suspicious, considering the magic 
 date. :)



 On 3/26/07, Francis Amanfo [EMAIL PROTECTED]  wrote:
 I'm only a messenger. Don't persecute the messenger!



 On 3/26/07, Korbinian Bachl  [EMAIL PROTECTED]  wrote:


 The official announcement of this was planned for 
 April 1, 2007, 
 but
 because this falls on Sunday, the
 announcement is scheduled for April, 2 2007.

 is this some kind of april the 1st joke or are you 
 serious about it???


 
  Von: [EMAIL PROTECTED]
 [mailto:[EMAIL PROTECTED] Im Auftrag von 
 Francis Amanfo
 Gesendet: Montag, 26. März 2007 16:21
 An: wicket-user@lists.sourceforge.net
 Betreff: [Wicket-user] IBM to adopt Wicket as standard web 
 framework



 Hi guys,

 An IBM internal memo, written and signed by product manager, Tim
 O'Malley, has been leaked.
 Well, to be more direct, a friend of my working with IBM leaked 
 this to
 me.
 In it, IBM praised Wicket as an innovative and state of the art 
 web
 framework that stands up tall against all its
 competitors including JSF, Struts 2 and Tapestry. In 
 the memo, IBM
 mentions some of it's frustrations with JSF and
 about Sun not listening to them during the creation of the JSF
 specification. In the memo, IBM also praises the Wicket team
 as very hardworking and dedicated guys and is in 
 negotiations to 
 employ
 them into IBM and make them work on Wicket
 and sell support under the umbrella of IBM.
 The memo also goes further to announce IBM's plans to integrate 
 Wicket
 into it's JEE offerings. To be more specific,
 Wicket would be Integrated into RAD 8 as the default Web 
 framework,
 which it plans to release in the fourth quater of this year.
 The memo also states IBM's plans to create widgets, 
 which it plans 
 to
 market under the label WICKED Widgets, of all
 the standard Wicket components and enable drag and drop 
 development in
 RAD 8. It would also make WICKED(c) widgets standalone for 
 separate downloads.
 The official announcement of this was planned for April 
 1, 2007, 
 but
 because this falls on Sunday, the
 announcement is scheduled for April, 2 2007.

 There is a link to this memo but is currently available only on 
 IBM's
 internal network, which of course is closed
 to the public.

 I personally think this is a great news. It will grow Wicket's 
 adoption
 exponentially, which is of course a good
 thing for the community and give Wicket a high status in the web
 framework community. In addition, our diligent, humble
 and hardworking Wicket core developers would be rewarded.

 So join me rejoice about the greatest news so far for the Wicket
 community.
 Regards,
 Francis
 --
 Beware of bugs in the above code;
 I have only proved it correct, not tried it.
 -Donald Knuth

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Re: [Wicket-user] Reverting the constructor change of 2.0

[Anders Peterson]

How did this end - what's the plan? /Anders

Eelco Hillenius wrote:
 I didn't mean that bad. I would just prefer someone else to do the next vote.
 
 Eelco
 
 
 On 3/14/07, Igor Vaynberg [EMAIL PROTECTED] wrote:
 i guess sacrasm and frustration dont transfer well over email :|

 -igor


 On 3/14/07, Eelco Hillenius  [EMAIL PROTECTED] wrote:
 On 3/14/07, Igor Vaynberg  [EMAIL PROTECTED] wrote:
 well obviously we cannot poll for that until we have decided what 1.3
 will
 be. so first you need a poll on that, then you need a poll that depends
 on
 that poll so we can decide when to drop support for 1.5. and then
 another
 poll on the what to do next, but that poll has to depend on the previous
 two
 polls. and while all these polls are going on no one is doing anything
 because nothing is certain. do i commit to 2.0? naah, maybe into 1.3.
 but
 wait i dont know if i can put this into 1.3 because a poll on that is
 still
 going on. blah blah blah blah.
 We are looking for consensus, and as we're doing that on the mailing
 list, yes there will be a couple of bounces back and forth.

 But I think we pretty much know all the options now. I've been
 sticking my neck out with polls and proposals a couple of times now,
 so Igor, why don't you write that next ultimate all-compassing vote
 where we can decide on ditching the constructor refactor and when and
 how?

 Eelco


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Re: [Wicket-user] Reverting the constructor change of 2.0

[Anders Peterson]

Sounds very good!

Generally I try to stay away from beta versions, but in the case of 
Wicket 1.4/2.0 I think I'll make an exception.

/Anders

Eelco Hillenius wrote:
 Hi,
 
 It ended in us agreeing we should get rid of the constructor change.
 
 We currently working on backporting all the 2.0 features to 1.3,
 except for the constructor change and the JDK 5 features. You can
 track the progress of that here:
 http://cwiki.apache.org/confluence/display/WICKET/Backporting+features+from+trunk.
 As you can see, we're progressing pretty quickly. After that is done,
 we'll move the current trunk somewhere and replace it with the code of
 1.3 and add the JDK 5 features (basically generified models and
 components). We're probably gonna call that release 2.0, though 1.4 is
 still an option.
 
 So in a couple of weeks, the net result is that we'll have a Wicket
 version that is everything Wicket 2.0 is now bar the constructor
 change. 1.3 and that version will be very close to each other (so much
 easier to maintain), and it'll be easier for people comming from 1.2
 or 1.3 to move to that version.
 
 Regards,
 
 Eelco
 
 On 3/27/07, Anders Peterson [EMAIL PROTECTED] wrote:
 How did this end - what's the plan? /Anders

 Eelco Hillenius wrote:
 I didn't mean that bad. I would just prefer someone else to do the next 
 vote.

 Eelco


 On 3/14/07, Igor Vaynberg [EMAIL PROTECTED] wrote:
 i guess sacrasm and frustration dont transfer well over email :|

 -igor


 On 3/14/07, Eelco Hillenius  [EMAIL PROTECTED] wrote:
 On 3/14/07, Igor Vaynberg  [EMAIL PROTECTED] wrote:
 well obviously we cannot poll for that until we have decided what 1.3
 will
 be. so first you need a poll on that, then you need a poll that depends
 on
 that poll so we can decide when to drop support for 1.5. and then
 another
 poll on the what to do next, but that poll has to depend on the previous
 two
 polls. and while all these polls are going on no one is doing anything
 because nothing is certain. do i commit to 2.0? naah, maybe into 1.3.
 but
 wait i dont know if i can put this into 1.3 because a poll on that is
 still
 going on. blah blah blah blah.
 We are looking for consensus, and as we're doing that on the mailing
 list, yes there will be a couple of bounces back and forth.

 But I think we pretty much know all the options now. I've been
 sticking my neck out with polls and proposals a couple of times now,
 so Igor, why don't you write that next ultimate all-compassing vote
 where we can decide on ditching the constructor refactor and when and
 how?

 Eelco


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Re: [Wicket-user] Converters

[Anders Peterson]

When I read some old posts discussing changes to the converts I thought 
you where trying to re-invent Format. All that would be required is a 
factory/cache that finds/builds the correct instance and perhaps some 
new Format subclasses.

If you can code MyOwnBigDecimal, then my would it be impossible to code 
a MyOwnFormat and register it with the factory/cache?

I don't know how the new converters work - I'm sure they're great. I 
look forward to the next new release!

/Anders

Igor Vaynberg wrote:
 do i control the factory? what if i have MyOwnBigDecimal class and i 
 want to write a formatter to go between that and a string automatically. 
 how do i integrate that into the jdk api so it works transparently like 
 it would if i used wicket's converters?
 
 -igor
 
 
 On 3/14/07, *Anders Peterson* [EMAIL PROTECTED] 
 mailto:[EMAIL PROTECTED] wrote:
 
 Not sure what you mean, but if you control the factory you control the
 formatters. /Anders
 
 Igor Vaynberg wrote:
   and does that api support registering your own converters?
  
   -igor
  
  
   On 3/14/07, *Anders Peterson* [EMAIL PROTECTED]
 mailto:[EMAIL PROTECTED]
   mailto:[EMAIL PROTECTED] mailto:[EMAIL PROTECTED] wrote:
  
   No. You create them specifying which Locale to use. Look at
 the static
   factory methods in NumbverFormat.
  
  
 http://java.sun.com/j2se/1.5.0/docs/api/java/text/NumberFormat.html
  
   All Wicket would needs is a FormatFactory that reads the
 Locale from
   the
   request/session/user and instantiates correct Format instances.
  
   /Anders
  
   Martijn Dashorst wrote:
 On 3/14/07, Anders Peterson [EMAIL PROTECTED]
 mailto:[EMAIL PROTECTED]
   mailto:[EMAIL PROTECTED] mailto:[EMAIL PROTECTED] wrote:
 One of my questions remain: Why does Wicket need
 converters at
   all? Java
 already has java.text.Format with two-way conversion between
   String and
 some other class.

 But they assume the VM's locale, not the locale of the
   request/session/user.

 Martijn

  
  
  
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[Wicket-user] Converters

[Anders Peterson]

Hi,

I use Wicket 1.2.5 and have been looking at Converters (IConverter  
ITypeConverter).

The problem I want to solve is formatting my BigDecimals correctly.

Can't understand why this should be so complicated. Why have converters 
at all? Java already has java.text.Format with the methods:

Object parseObject(String source)
String format (Object obj)

What more do we need? (Maybe generics...)


How do I get rid of 0E-9 when using Wicket 1.2.5 and Java 1.5? Why 
isn't this - whatever the solution is - the default behavior of Wicket?


/Anders


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Re: [Wicket-user] Reverting the constructor change of 2.0

[Anders Peterson]

Can anyone vote?

I vote for alternative D.

You asked about reverting the constructor change or not. My 
interpretation of the answers you got is: Yes, fine, what ever, but give 
us generics (for models at least).

Alternative D is: Revert to working on 1 branch (doesn't matter if it's 
called 1.3 or 2.0) and make moving to Java5 (adding Generics) top priority.

/Anders

Eelco Hillenius wrote:
 Hi,
 
 It looks like the discussion around reverting the constructor change
 that we did for 2.0 has cooled down. This email is not a vote yet, but
 a summary of opinions so far[1]. Those of you Wicket committers who
 didn't have your say yet (Juergen, Frank, Gwyn, Janne, Jan, Ate), I
 consider that an OK for reverting. If not, please reply to the thread.
 Juergen, you have been working on 2.0 quite a bit. Can you please
 state your opinion, and can you tell us whether there are more
 functional differences between 1.3 and 2.0 other than the constructor
 change, Java 5 features, the attach/ detach change and improved models
 and validators?[2]
 
 I think so far we can safely say reverting is supported broadly. At
 least, of the people who reacted, most stated they actually preferred
 add over the new constructor, and those who were either neutral or had
 a slight preference for the new constructor would still support
 reverting as that would keep the momentum for the project going.
 
 So, it looks like this may happen. But we'll vote about that in a few
 days. Before we do that, we have to reach consensus on the package
 we'll vote on. We have some different - and strong - opinions[3] so we
 need to find a way to bridge that. Here are what I think the different
 opinions:
 
 a) focus on stabilizing 1.3 first, meanwhile keep supporting 2.0
 (though only for bugfixes). 1.4 will be the release with backports of
 the currently missing 2.0 features, and 1.5 will be 1.4 + the Java 5
 features (including generics).
 
 b) as a) but rather than developing 1.3 up to a final release, freeze
 asap (only fix bugs) and start on 1.4
 
 c) put all backports except for the Java 5 features in 1.3 after the
 beta1 release (which we agreed upon doing this weekend). 1.4 will be
 for the Java 5 features, and the branch should be started as soon as
 1.3 is feature complete.
 
 Maybe the most constructive way to gather opinions here is to first
 let people plainly state what they prefer before we enter discussion
 mode. So, please state what package you think is the best idea (or
 introduce d if you want), and why.
 
 Cheers,
 
 Eelco
 
 [1] 
 http://www.nabble.com/IMPORTANT%3A-your-opinion-on-the-constructor-change-in-2.0-tf3358738.html#a9350505
 http://www.nabble.com/Re%3A-IMPORTANT%3A-your-opinion-on-the-constructor-tf3359229.html#a9344068
 [2] http://www.nabble.com/State-1.3--features-tf3376983.html
 [3] 
 http://www.nabble.com/VOTE%3A-backporting-wicket-2.0-model-change-to-1.3-tf3364601.html
 http://www.nabble.com/roadmap-tf3366743.html
 
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Re: [Wicket-user] Reverting the constructor change of 2.0

[Anders Peterson]

Is the feature set for 1.3 set? I vote to remove everything that may 
delay the release of that version.

With alternative C; when would you estimate 1.4 (Java5) could be released?

/Anders

Johan Compagner wrote:
 1.4 will be java5 (when C is done first)
 That we can do pretty quickly.
 (not direclty releasing it but usable for people who want 1.3 + java5)
 
 johan
 
 
 On 3/14/07, * Anders Peterson* [EMAIL PROTECTED] 
 mailto:[EMAIL PROTECTED] wrote:
 
 Can anyone vote?
 
 I vote for alternative D.
 
 You asked about reverting the constructor change or not. My
 interpretation of the answers you got is: Yes, fine, what ever, but give
 us generics (for models at least).
 
 Alternative D is: Revert to working on 1 branch (doesn't matter if it's
 called 1.3 or 2.0) and make moving to Java5 (adding Generics) top
 priority.
 
 /Anders
 
 Eelco Hillenius wrote:
   Hi,
  
   It looks like the discussion around reverting the constructor change
   that we did for 2.0 has cooled down. This email is not a vote
 yet, but
   a summary of opinions so far[1]. Those of you Wicket committers who
   didn't have your say yet (Juergen, Frank, Gwyn, Janne, Jan, Ate), I
   consider that an OK for reverting. If not, please reply to the
 thread.
   Juergen, you have been working on 2.0 quite a bit. Can you please
   state your opinion, and can you tell us whether there are more
   functional differences between 1.3 and 2.0 other than the constructor
   change, Java 5 features, the attach/ detach change and improved
 models
   and validators?[2]
  
   I think so far we can safely say reverting is supported broadly. At
   least, of the people who reacted, most stated they actually preferred
   add over the new constructor, and those who were either neutral
 or had
   a slight preference for the new constructor would still support
   reverting as that would keep the momentum for the project going.
  
   So, it looks like this may happen. But we'll vote about that in a
 few
   days. Before we do that, we have to reach consensus on the package
   we'll vote on. We have some different - and strong - opinions[3]
 so we
   need to find a way to bridge that. Here are what I think the
 different
   opinions:
  
   a) focus on stabilizing 1.3 first, meanwhile keep supporting 2.0
   (though only for bugfixes). 1.4 will be the release with backports of
   the currently missing 2.0 features, and 1.5 will be 1.4 + the Java 5
   features (including generics).
  
   b) as a) but rather than developing 1.3 up to a final release, freeze
   asap (only fix bugs) and start on 1.4
  
   c) put all backports except for the Java 5 features in 1.3 after the
   beta1 release (which we agreed upon doing this weekend). 1.4 will be
   for the Java 5 features, and the branch should be started as soon as
   1.3 is feature complete.
  
   Maybe the most constructive way to gather opinions here is to first
   let people plainly state what they prefer before we enter discussion
   mode. So, please state what package you think is the best idea (or
   introduce d if you want), and why.
  
   Cheers,
  
   Eelco
  
   [1]
 
 http://www.nabble.com/IMPORTANT%3A-your-opinion-on-the-constructor-change-in-2.0-tf3358738.html#a9350505
 
 http://www.nabble.com/IMPORTANT%3A-your-opinion-on-the-constructor-change-in-2.0-tf3358738.html#a9350505
  
 
 http://www.nabble.com/Re%3A-IMPORTANT%3A-your-opinion-on-the-constructor-tf3359229.html#a9344068
   [2] http://www.nabble.com/State-1.3--features-tf3376983.html
   [3]
 
 http://www.nabble.com/VOTE%3A-backporting-wicket-2.0-model-change-to-1.3-tf3364601.html
   http://www.nabble.com/roadmap-tf3366743.html
  
  
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Re: [Wicket-user] Converters

[Anders Peterson]

 From reading old posts I know that the converters have been improved 
for 1.3/2.0 but I'm doing my best to stay away from beta versions.

I have built two new ITypeConverters, a new IConverter and a new 
IConverterFactory and ... it kind of works. Strangely I don't see the 
correct format everywhere.

One of my questions remain: Why does Wicket need converters at all? Java 
already has java.text.Format with two-way conversion between String and 
some other class.

/Anders

Johan Compagner wrote:
 please look at the converters that are now in 1.3. those are much simpler
 and you should be able to do what you want pretty quickly
 
 in 1.2.x it is also possible. But it is a bit harder
 Because if you want BigDecimals support for both ways you have to make 2
 and then register one for String-BigDecimals (in the StringConverter i 
 believe)
 and BigDecimals-String
 
 johan
 
 
 On 3/14/07, *Anders Peterson * [EMAIL PROTECTED] 
 mailto:[EMAIL PROTECTED] wrote:
 
 Hi,
 
 I use Wicket 1.2.5 and have been looking at Converters (IConverter 
 ITypeConverter).
 
 The problem I want to solve is formatting my BigDecimals correctly.
 
 Can't understand why this should be so complicated. Why have converters
 at all? Java already has java.text.Format with the methods:
 
 Object parseObject(String source)
 String format (Object obj)
 
 What more do we need? (Maybe generics...)
 
 
 How do I get rid of 0E-9 when using Wicket 1.2.5 and Java 1.5? Why
 isn't this - whatever the solution is - the default behavior of Wicket?
 
 
 /Anders
 
 
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Re: [Wicket-user] Reverting the constructor change of 2.0

[Anders Peterson]

Do you plan to still release new features for old Java after you've 
released a Java5 version? That seems crazy.

Make one last release for JDK 1.4 and after that it's bug fixing only. 
All new development should target Java5. Wicket should have moved to 
Java5 at least one year ago!

/Anders

Eelco Hillenius wrote:
 1.3 feature set would be a merge between 2.0 and 1.3 when we drop 2.0

 And no releasing it quickly will not mean that we will release a java5
 version quickly
 because that will mean we will again have multiply branches to support.
 
 It would be my idea to follow up with a Java 5 version asap though.
 Which is the reason why I'm arguing for folding in the 'missing' ports
 in 1.3 soon, so that we would at least have that out of the way and
 only have two branches which are pretty close to each other. But as
 long as we plan to support JDK 1.4, we have to have two branches I'm
 afraid.
 
 Eelco
 
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Re: [Wicket-user] Converters

[Anders Peterson]

No. You create them specifying which Locale to use. Look at the static 
factory methods in NumbverFormat.

http://java.sun.com/j2se/1.5.0/docs/api/java/text/NumberFormat.html

All Wicket would needs is a FormatFactory that reads the Locale from the 
request/session/user and instantiates correct Format instances.

/Anders

Martijn Dashorst wrote:
 On 3/14/07, Anders Peterson [EMAIL PROTECTED] wrote:
 One of my questions remain: Why does Wicket need converters at all? Java
 already has java.text.Format with two-way conversion between String and
 some other class.
 
 But they assume the VM's locale, not the locale of the request/session/user.
 
 Martijn
 


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Re: [Wicket-user] Reverting the constructor change of 2.0

[Anders Peterson]

1) I think you're overestimating the trouble that would cause. The only 
thing they're not getting is new features after the next release. In 
terms of new (major) releases no one has gotten anything for almost a year.

2) You also lose something by not moving to Java5... Wicket can be 
better with Java5. The fact that Wicket has not yet adopted Java5 means 
it is not as good as it could be.

Java5 is not just a minor upgrade. If anything ever should have been 
called Java2 it's Java 1.5/5.0 ;-)

/Anders

Eelco Hillenius wrote:
 On 3/14/07, Anders Peterson [EMAIL PROTECTED] wrote:
 Do you plan to still release new features for old Java after you've
 released a Java5 version? That seems crazy.

 Make one last release for JDK 1.4 and after that it's bug fixing only.
 All new development should target Java5. Wicket should have moved to
 Java5 at least one year ago!
 
 We did actually with Wicket 2.0 which started over a year ago. But we
 haven't gotten around to releasing for many reasons.
 
 As for dropping  JDK 1.5 support: I think the committers would love
 that, but it would bring a bunch of users in trouble I'm afraid. Maybe
 we should have a poll about that.
 
 Eelco
 
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Re: [Wicket-user] Converters

[Anders Peterson]

Not sure what you mean, but if you control the factory you control the 
formatters. /Anders

Igor Vaynberg wrote:
 and does that api support registering your own converters?
 
 -igor
 
 
 On 3/14/07, *Anders Peterson* [EMAIL PROTECTED] 
 mailto:[EMAIL PROTECTED] wrote:
 
 No. You create them specifying which Locale to use. Look at the static
 factory methods in NumbverFormat.
 
 http://java.sun.com/j2se/1.5.0/docs/api/java/text/NumberFormat.html
 
 All Wicket would needs is a FormatFactory that reads the Locale from
 the
 request/session/user and instantiates correct Format instances.
 
 /Anders
 
 Martijn Dashorst wrote:
   On 3/14/07, Anders Peterson [EMAIL PROTECTED]
 mailto:[EMAIL PROTECTED] wrote:
   One of my questions remain: Why does Wicket need converters at
 all? Java
   already has java.text.Format with two-way conversion between
 String and
   some other class.
  
   But they assume the VM's locale, not the locale of the
 request/session/user.
  
   Martijn
  
 
 
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Re: [Wicket-user] Reverting the constructor change of 2.0

[Anders Peterson]

Don't poll too much - just decide on something. The core development 
team is relatively small isn't it... /Anders

Igor Vaynberg wrote:
 well obviously we cannot poll for that until we have decided what 1.3 
 will be. so first you need a poll on that, then you need a poll that 
 depends on that poll so we can decide when to drop support for 1.5. and 
 then another poll on the what to do next, but that poll has to depend on 
 the previous two polls. and while all these polls are going on no one is 
 doing anything because nothing is certain. do i commit to 2.0? naah, 
 maybe into 1.3. but wait i dont know if i can put this into 1.3 because 
 a poll on that is still going on. blah blah blah blah.
 
 create a few variations of the roadmap. put them into a single poll. 
 lets poll, and vote on that and restore some sanity.
 
 -igor
 
 
 On 3/14/07, *Eelco Hillenius* [EMAIL PROTECTED] 
 mailto:[EMAIL PROTECTED] wrote:
 
 This thread is about 'Reverting the constructor change of 2.0', not
 about 'Stop supporting  JDK 1.5  after 1.3'.
 
 Eelco
 
 On 3/14/07, Igor Vaynberg  [EMAIL PROTECTED]
 mailto:[EMAIL PROTECTED] wrote:
   isnt this thread a poll? how many polls of the same thing do we
 need? omfg
   ponies!
  
   -igor
  
  
   On 3/14/07, Eelco Hillenius  [EMAIL PROTECTED]
 mailto:[EMAIL PROTECTED] wrote:
   
 Maintaining Wicket 1.3 should be for bug fixes, not new
 features. But
 that doesn't prevent new components to be developed, or
 backported by
 our community if there is a need for JDK 1.4 components. And
 if you
 really have a need, then you can always use
 retrotranslator/weaver to
 backport 1.5 for your own pleasure.
   
If that would be the consensus, we could consider skipping
 backporting
those last 2.0 features and just put them in 1.4 together with
 the JDK
5 features.
   
Who wants to write the poll?
   
Eelco
   
   
  
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Re: [Wicket-user] IMPORTANT: your opinion on the constructor change in2.0

[Anders Peterson]

I don't care about (understand) the pros and cons regarding the 
constructor change. What Wicket needs is parameterized models 
(generics). I think you should do what ever it takes to support this in 
a released version as soon as possible.

/Anders

Gabor Szokoli wrote:
 On 3/7/07, Korbinian Bachl [EMAIL PROTECTED] wrote:
 Also please if you decide to not use the new constructor go on a JDK1.5 solo
 dev path soon
 
 +1 for this if I understand it right :-)
 We are not committed to either version yet, do basic prototypes in
 1.2, but untyped getModel()  is getting on my nerves already. (How did
 we ever use java without generics?)
 I am on principle against severe API changes unless they bring
 significant benefits, but do not feel myself competent to judge the
 current situation.
 
 
 Gabor Szokoli
 
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Re: [Wicket-user] IMPORTANT: your opinion on the constructor change in2.0

[Anders Peterson]

...  and having two active development branches seems like a really bad 
idea. /Anders

Anders Peterson wrote:
 I don't care about (understand) the pros and cons regarding the 
 constructor change. What Wicket needs is parameterized models 
 (generics). I think you should do what ever it takes to support this 
 in a released version as soon as possible.

 /Anders

 Gabor Szokoli wrote:
 On 3/7/07, Korbinian Bachl [EMAIL PROTECTED] wrote:
 Also please if you decide to not use the new constructor go on a 
 JDK1.5 solo
 dev path soon

 +1 for this if I understand it right :-)
 We are not committed to either version yet, do basic prototypes in
 1.2, but untyped getModel()  is getting on my nerves already. (How did
 we ever use java without generics?)
 I am on principle against severe API changes unless they bring
 significant benefits, but do not feel myself competent to judge the
 current situation.


 Gabor Szokoli

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Re: [Wicket-user] Wicket starts incubation at Apache

[Anders Peterson]

Why?

Martijn Dashorst wrote:
 The Wicket team is proud to announce that we are starting the process
 of joining the Apache Software Foundation.
 
 When projects first move to Apache, they are housed at the Apache
 Incubator. The Incubator helps incoming projects migrate to the
 vibrant Apache community. One of the primary goals of the incubator is
 to ensure that the joining community is open, diverse and effective
 meritocracy.
 
 During Wicket's incubation we will resolve any issues regarding
 license (in)compatibilities that might be present in our code. For
 more information on the incubation process, please read the documents
 found on the incubator website.
 
 To facilitate our transition we have moved parts of our development
 infrastructure to the Apache Incubator:
 
  o the subversion repository is now hosted at
 https://svn.apache.org/repos/asf/incubator/wicket
  o the development mailing list is now provided by wicket-dev at
 incubator.apache.org
  o the commit mailing list is now wicket-commits at incubator.apache.org
  o our bug tracking system is now hosted at
 http://issues.apache.org/jira/browse/WICKET
 
 Please join our incubating community at Apache by subscribing to the
 Wicket development list. Send a message to:
 
 wicket-dev-subscribe at incubator.apache.org
 
 and follow the instructions.
 
 If you want to recieve commit messages from Wicket to track our
 development, please send a message to
 
 wicket-commits-subscribe at incubator.apache.org
 
 and follow the instructions.
 
 When you need to file a bug report, a patch or a request for
 enhancement (RFE), then please do so at our Apache JIRA installation:
 
 http://issues.apache.org/jira/browse/WICKET
 
 We are in the process of importing the contents of the sourceforge
 trackers into our JIRA project space. This will loose some information
 in the process, however we strive to keep as much information as
 possible.
 
 As always, have fun and thanks for your support using Wicket!
 
 - the Wicket team
 
 ps. apologies for the cross posting


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[Wicket-user] Database Integration With Wicket

[Anders Peterson]

JPA, Hibernate and other tools like that seem to (desperately) try to 
hide the fact that there is an rdbms underneath. Did anyone here try not 
having one...

http://www.db4o.com/about/news/release/2006_09_28.aspx

/Anders

Korbinian Bachl wrote:
 Hi All,
  
 since im working now several days with NB and JPA1.0 i think i can give 
 some hints.:
  
 First: DONT USE NB 5.5 BETA 1 or 2, use the DEV daily build instead ! - 
 best the one from 29 09 2006 or 30 09 2006, as the Beta's have problems 
 in creating entitys from DB in case of Many to Many relation and 
 additional paramters within as well as some other flaws...
  
 if you use the dev daily build... you will just want to forget eclipse 
 and dali ! - its so smooth, fast.. in fact, the time you need to 
 download and install the 200 MB + eclipse and plugins, youre already 
 running in NB (small 42 MB) and also have your first JPA already running..
  
 however, NB 5.5 has 1 big flaw: the java editor... compared to eclipse 
 its abaout 1 year behind, very sad IMHO.
  
 some things you also might want to remind when working with JPA:
 - currently prefer Toplink Essentials over Hibernate, as Hibernate is 
 only RC and is very unstable
 - NB55: when entitys are created, the EJB QL will take the parameters 
 from the Java environment, not the DB, as well as vars are written in 
 lowercase even if they are uppercase in DB:
  
 e.g:
  
 @Entity
 public class Foo {
  
 private xxx Bar; -- even this is treated as lowercase !!!
  
 setBar( Bar) {} 
 getBar () {}
 }
  
 - query might be: delete c from Foo c where c.bar = 'something'
 and also dont forget to use ..executeQuery() in case of bulk operations :)
  
 - currently PostgreSQL's serials are a problem, as they arent used by NB 
 entity creation... means much handwork.
  
 - NB 5.5 dev has also still not the ability to autoamticall do more than 
 1 persistence Unit, if you need more (like me) you have to edit the 
 persistence.xml by yourself
  
 - right click on project and Add Persistence will give you a very fast 
 start - not elegant, but hey, you see how it works
  
 - same is with EJB3 code for obtaining JNDI :) - ok, this is not hard, 
 but hey, most programmers are lazy...
  
 Regards,
  
 Korbinian
  
 
 
 *Von:* [EMAIL PROTECTED]
 [mailto:[EMAIL PROTECTED] *Im Auftrag von
 *Ayodeji Aladejebi
 *Gesendet:* Mittwoch, 27. September 2006 13:01
 *An:* wicket-user@lists.sourceforge.net
 *Betreff:* Re: [Wicket-user] Database Integration With Wicket
 
 Why should anybody be using eclipse for JPA rather than NB5.5. Oh my
 God you cant have an idea of how much fun you are missing.
 
  With NB5.5 i configured and setup Persistence within my wicket
 application in minutes and my persistence is working to fine. Not
 even with the annotation support in my entity beans. i enjoyed the
 look on my teams faces.
 
 Once again thank you Gustavo for hinting this.
 
 and like igor said, i just subclassed the WebRequestCycle to
 initialize my EntityManagers and boom everything works
 
 Please if you are doing persistence in your wicket applications,
 give NB5.5 a try, (i am not referring to guys that can handcode the
 entire thing in emacs oh) but its just too lovely infact am stuck to
 it like ants on sugar now :)
 
 Infact nobody can preach eclipse to me on this...yu see in my
 country, internet access is not yet so fast so i dont have all the
 bandwidth and project time to be looking for plugin left, right and
 center...whatever works out of the box is just fine
 
 On 9/25/06, *Gustavo Santucho* [EMAIL PROTECTED]
 mailto:[EMAIL PROTECTED] wrote:
 
   Then if you use eclipse you look at Dali
 
 I strongly recommend Netbeans for JPA development.
 For a comparison, check out
 http://blogs.sun.com/klingo/entry/jpa_netbeans_5_5_vs
 http://blogs.sun.com/klingo/entry/jpa_netbeans_5_5_vs
 I use JPA and both Eclipse and Netbeans on a daily basis.
 
 -
 Gustavo.
 
 
 
 
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Re: [Wicket-user] Database Integration With Wicket

[Anders Peterson]

Ok, I wasn't suggesting that db40 actually is 55 times faster than 
Hibernate (should have linked to a different page).

When you have to connect to a legacy rdbms then using db4o is obviously 
not an option.

Say you are a Java developer working on a new application, and you don't 
know much about databases, you just need persistence. It seems JPA is, 
partly, designed for this scenario. And in this case wouldn't using, 
something like, db40 be a better alternative?

/Anders

Korbinian Bachl wrote:
 dont believe a benchmark that you haven't faked yourself 
 
 but serious: 99% of all time you have no choice. The DB isnt part of your
 app, you are forced to connect to a legacy one and personally I havent heard
 of DB4O beeing as mighty as a clustered oracle wich can get up to thousands
 of tables holding terabyte of data...
 
 Also, the fact they arent showing any details of the implementantion doenst
 make me believe this is to be looked at serious. Wich version of Hibernate?
 How did they Batch-Queries ? What caching provider and strategy? etc, etc,
 etc.  
 
 I'm currently working on a data-transfer app - transferring from a very old
 legacy DB into a new one where nothing stays same and i use JPA 1.0 with
 ToplinkEssentials. By just changing some things the time needed to convert
 1750 things went from 7:10 min to 3:50 min. Also the getting of these 1750
 entities and 3 corresponding entities each (3 x 1750) and transforming them
 into a single string to print out just takes 830 ms (including the
 transaction around all that) on my dev laptopt from a plain MySQL 5.0 (plain
 means untweaked) DB. (the laptop is a 1,8 GHZ centrino, 1 GB RAM, running at
 that time NB5.5. Dev, Some instances of firefox, DB2 v 9.1, PostgreSQL 8.0,
 MySQL4.1, MySQL5.0 as well as 30 other things like outlook...)
 
 And i also dont believe that we can get rid of RDBMs in any companie as they
 have proved to be good at their work, so we will have to use ORM, no matter
 if we like it or not. JPA 1.0 however is a great step towards, unifieing
 (hows that written correct??) access and introducing solo-query batch
 updates and deletes as well as the possibilitie to switch the implementation
 from one framework (e.g.: hibernate) to another (e.g: kodo) by just changing
 2 lines in persistence.xml... as well as afterward tweaking if you need so.
 
 Regards
 
 Korbinian
 
 
 -Ursprüngliche Nachricht-
 Von: [EMAIL PROTECTED] 
 [mailto:[EMAIL PROTECTED] Im Auftrag 
 von Anders Peterson
 Gesendet: Dienstag, 3. Oktober 2006 09:51
 An: wicket-user@lists.sourceforge.net
 Betreff: [Wicket-user] Database Integration With Wicket

 JPA, Hibernate and other tools like that seem to 
 (desperately) try to hide the fact that there is an rdbms 
 underneath. Did anyone here try not having one...

 http://www.db4o.com/about/news/release/2006_09_28.aspx

 /Anders

 Korbinian Bachl wrote:
 Hi All,
  
 since im working now several days with NB and JPA1.0 i think i can 
 give some hints.:
  
 First: DONT USE NB 5.5 BETA 1 or 2, use the DEV daily build 
 instead ! 
 - best the one from 29 09 2006 or 30 09 2006, as the Beta's have 
 problems in creating entitys from DB in case of Many to 
 Many relation 
 and additional paramters within as well as some other flaws...
  
 if you use the dev daily build... you will just want to 
 forget eclipse 
 and dali ! - its so smooth, fast.. in fact, the time you need to 
 download and install the 200 MB + eclipse and plugins, 
 youre already 
 running in NB (small 42 MB) and also have your first JPA 
 already running..
  
 however, NB 5.5 has 1 big flaw: the java editor... compared 
 to eclipse 
 its abaout 1 year behind, very sad IMHO.
  
 some things you also might want to remind when working with JPA:
 - currently prefer Toplink Essentials over Hibernate, as 
 Hibernate is 
 only RC and is very unstable
 - NB55: when entitys are created, the EJB QL will take the 
 parameters 
 from the Java environment, not the DB, as well as vars are 
 written in 
 lowercase even if they are uppercase in DB:
  
 e.g:
  
 @Entity
 public class Foo {
  
 private xxx Bar; -- even this is treated as lowercase !!!
  
 setBar( Bar) {}
 getBar () {}
 }
  
 - query might be: delete c from Foo c where c.bar = 'something'
 and also dont forget to use ..executeQuery() in case of bulk 
 operations :)
  
 - currently PostgreSQL's serials are a problem, as they 
 arent used by 
 NB entity creation... means much handwork.
  
 - NB 5.5 dev has also still not the ability to autoamticall do more 
 than
 1 persistence Unit, if you need more (like me) you have to edit the 
 persistence.xml by yourself
  
 - right click on project and Add Persistence will give you a very 
 fast start - not elegant, but hey, you see how it works
  
 - same is with EJB3 code for obtaining JNDI :) - ok, this 
 is not hard, 
 but hey, most programmers are lazy...
  
 Regards,
  
 Korbinian

Re: [Wicket-user] Database Integration With Wicket

[Anders Peterson]

I looked at JPA this weekend - I'm positively surprised!


At first I was confused about how everything fit together; JPA, 
GlassFish, Sun, Java, Oracle, TopLink... What you should know is:

1) GlassFish is the name for the open source development project for 
building a Java EE 5 application server. It is based on the source code 
for Sun Java System Application Server PE 9 donated by Sun Microsystems 
and TopLink persistence code donated by Oracle.

2) TopLink Essentials is the open-source community edition of Oracle's 
TopLink product. It provides the JPA functionality for the EJB 3.0 
Reference Implementation.

3) There is no problem to use JPA (TopLink Essentials) without having to 
go Java EE 5 completely. In fact it seems to be a clean and compact API.


Look here:

https://maven-repository.dev.java.net/nonav/repository/javax.persistence/

persistence-api-1.0.jar contains the JPA specifications only.

toplink-essentials-1.0.jar contains the JPA specifications and reference 
implementation.


Then if you use eclipse you look at Dali:

http://www.eclipse.org/dali/


Looks good to me!


I feel these are the tools I'll be using in the future, but I'll miss 
PriDE. I really think there is much to like about a framework like that.

http://pride.sourceforge.net/PriDE-Inside.html

PriDE's main disadvantage is that it's not buzz word compliant.


/Anders


Gustavo Santucho wrote:
   any wicket example that uses EJB3 and Java Persistence 1.0
 
 Nathan's Databinder will give you ideas and simplicity here ( if you 
 ignore the Maven thing, of course ;-) )
 Note that the Hibernate Session and the JPA EntityManager are almost 
 indentical concepts.
 In fact, if you use Hibernate as the JPA implementation, they are the 
 same thing.
 
 JPA makes accessing databases *really* simple.
 And you don't need EJB: I'm using JPA (TopLink) in a JSE project.
 
 -
 Gustavo.
 
 
 
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Re: [Wicket-user] Database Integration With Wicket

[Anders Peterson]

I use PriDE. It's extremely small and easy to learn - basically it 
generates SQL for you.

http://pride.sourceforge.net/

I've designed a number of supporting classes and coding conventions that 
give me some more advanced features (still light weight). I've been 
meaning to look at what exists in terms of Wicket database/persistence 
code to see if what I've done could be integrated/merged with that. At 
the moment my code only depends on PriDE.

What kind of integration are you talking about? Isn't it a good idea to 
keep database/persistence code and application/gui code independent?

/Anders

Eelco Hillenius wrote:
 If someone would provide a JDBC version of wicket-phonebook, that
 would be welcome! We talked about wanting this, but haven't found any
 time to do this ourselves yet.
 
 Eelco
 
 
 On 9/21/06, Igor Vaynberg [EMAIL PROTECTED] wrote:
 look at wicket-phonebook, it uses wicket and spring. there are dao
 implementations for hibernate and ibatis, but it would be trivial to write
 one for jdbc. spring takes care of all the connection/transaction management
 for you.

 if you dont want spring and want to write something for pure jdbc i would
 store a datasource in application, and subclass request cycle to
 open/close/rollback/commit the transaction assuming you want a
 single-transaction-per-request pattern.

 -Igor



 On 9/21/06, Ayodeji Aladejebi [EMAIL PROTECTED] wrote:

 Okay I know of all the contrib projects, databinder, hibernate stuffs etc,
 I have used databinder and its lovely but I think for some reason, database
 in wicket needs to be sort of easier to put up to encourage faster
 adaptation. Come to think about it, presently most of the present solutions
 around database in Wicket wraps around Hibernate and a beginner who is not
 familair with hibernate may get stuck. Some developers still tend to love
 thier SQL thing compared to ORM and in some cases, you want to do direct SQL
 cuz hibernate3.jar is some size you may not need to include in your portable
 web application. And believe me, i believe more ppl learn SQL more than they
 learn ORM in Schools
 Yesterday, I was tryin to use Dababinder or wicket-contrib-dababase but at
 the same time i was using the wicket-auth framework and all these contibs
 enforce that you extend XXXApplication in your Application Class which means
 you cannot directly use Contrib projects e.g wicket-contrib-database and
 also Wicket-auth. There should be a more elegant way to use multiple contrib
 projects without this Inheritance lock jam.
 Now most web applications need authentication and also need database which
 is why i believe wicket shoud somehow integrate some DAO scheme into wicket
 where all we do is set connection properties and from Components, you can
 fly CRUD.
 Well i know there must be some good reasons to exclude this from wicket
 but what will be the most elegant way to do CRUD in wicket?  where should I
 store my Connection? Session or Application Class. Should I create a parent
 WebPage with all the SQL stuffs and then make other CRUD pages extend it. a
 hundred ways to do this but which way is more elegant?
 Thanks Wicket dads




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 Web: www.dabarobjects.com

 Community:
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Re: [Wicket-user] jfreechart and wicket

[Anders Peterson]

I'm using jfreechart with both Wicket and WebObjects - there isn't much 
you have to do.


I created a class ChartResource that extends DynamicImageResource. In 
that class I have this:



protected byte[] getImageData() {

JFreeChart tmpChart = this.getFactory().getChart();

tmpChart.setBorderVisible(false);
tmpChart.setBackgroundPaint(this.getChartBackgroundPaint());
tmpChart.getPlot().setOutlinePaint(this.getPlotOutlinePaint());

tmpChart.getPlot().setBackgroundPaint(this.getPlotBackgroundPaint());

ByteArrayOutputStream tmpStream = new ByteArrayOutputStream();

try {
ChartUtilities.writeChartAsPNG(tmpStream, tmpChart, 
this.getWidth().intValue(), this.getHeight().intValue());

} catch (IOException anException) {
// TODO Something!!
}

return tmpStream.toByteArray();
}


Erik Brakkee wrote:

Decebal Suiu wrote:

Any example about how to display a chart generated
with jfreechart in a WebPage?
  

I am going to do the same for my application (trackdetective.com) for
displaying height profiles of GPS tracks.
Just browsed a little through the APIs. It seems you can use the Image
class. The most general constructor is

 public Image(final String id, final Resource imageResource)

In this way you can determine for yourself where it gets the input from.
Perhaps BlobImageResource or its super class DynamicImageResource are
good resource implementations for this.


I found a link about this topic
(http://www.nabble.com/JFreeChart-Experiment-tf1824840.html#a4977424)
but the link containing the source code is broken.

Thanks,
Decebal

  



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/*
 * Copyright © 2005 Optimatika (www.optimatika.se)
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the Software), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED AS IS, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */
package se.optimatika.wicket.markup.html;

import java.awt.Paint;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.util.Locale;

import org.jfree.chart.ChartUtilities;
import org.jfree.chart.JFreeChart;

import se.optimatika.jfree.chart.AbstractChartFactory;
import se.optimatika.jfree.chart.ColourPalette;

import wicket.markup.html.image.resource.DynamicImageResource;
import wicket.protocol.http.WebResponse;

public abstract class ChartResource extends DynamicImageResource {

private static final String CONTENT_TYPE = image/png;

private Paint myChartBackgroundPaint = 
ColourPalette.getInstance().getWhite();
// private transient byte[] myData;
private Number myHeight = 240;
private Paint myPlotBackgroundPaint = 
ColourPalette.getInstance().getWhite();
private Paint myPlotOutlinePaint = ColourPalette.getInstance().getWhite();
private Number myWidth = 320;

public ChartResource() {

super();

this.configure();
}

public ChartResource(Locale newLocale) {

super(newLocale);

this.configure();
}

public Paint getChartBackgroundPaint() {
return myChartBackgroundPaint;
}

public String getContentType() {
return CONTENT_TYPE;
}

public abstract AbstractChartFactory getFactory();

public Number getHeight() {
return myHeight;
}

public Paint getPlotBackgroundPaint() {
return myPlotBackgroundPaint;
}

public Paint getPlotOutlinePaint() {
return myPlotOutlinePaint;
}

public Number getWidth() {
return myWidth;
}

public void setChartBackgroundPaint(Paint newChartBackgroundPaint) {
myChartBackgroundPaint = 

Re: [Wicket-user] WebObjects open source?

[Anders Peterson]

Igor Vaynberg wrote:

 but this is for me where the problem is - if your components are 
 delcared declaratively then you cannot have dynamic page structures. eg 
 switching panels around, moving panels. this was one of the reasons i 
 switched away from tapestry.

Like this?

http://developer.apple.com/documentation/WebObjects/Reference/DynamicElements/WOSwitchComponent/chapter_34_section_1.html

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Re: [Wicket-user] WebObjects open source?

[Anders Peterson]

WO is free since about 1 year and may be about to become open source. 
Try it and learn what some really talented people designed more than 10 
years ago.

...and if you want to ask questions about technical details - ask the 
people who know. WO has a very good on-line community.

http://www.omnigroup.com/developer/mailinglists/

http://lists.apple.com/mailman/listinfo/

/Anders

Frank Silbermann wrote:
 Igor has already mentioned one advantage of declaring and configuring 
 components in code -- it is easy to make the presentation very dynamic.  For 
 example, when displaying products from a catalog, the page constructor can 
 vary the display-components used depending upon the type of product chosen by 
 the user.  (You could have different types of panels for different types of 
 products, any one of which is embedded into the same basic page object.)  But 
 I have another consideration in mind.
 
 The advocates of Extreme Programming argue that it is naïve to think one can 
 always design first and then implement.  They argue that it is more realistic 
 to start coding a few use cases and refine the design along the way, as 
 experience adds insight and as the user's requirements become clearer.  To 
 refine the design of existing code they recommend _refactoring_ (see Martin 
 Fowler's book on that topic).
 
 Suppose I've built a page and later decide, in view of the DRY (Don't Repeat 
 Yourself) principle that a portion of my page should be refactored into a 
 custom component.  With Wicket I can move some of the page's Java code into 
 my new panel class, and move HTML snippets from the page's associated HTML to 
 the panel's HTML file.  This process seems not too far removed from Fowler's 
 Extract Class refactoring.  To me, the ability to easily refactor is one 
 advantage of having the components added and configured in code.
 
 To do such a refactoring in Web Objects, I am guessing that one would have to 
 work with the generated tag files (a mixture of HTML and component 
 configuration tags), which I doubt is practical to do by hand.  So unless the 
 tool implements this kind of refactoring directly (which I doubt), you would 
 create the re-usable component _from_scratch_ using the display-painting tool 
 again, throwing away components that were painted earlier.  I fear that this 
 wasted effort may be a disincentive against presentation-layer refactoring -- 
 with the result that final designs won't be as tight as they could have been. 
  (On the other hand, if the Web Objects tool makes re-doing the work 
 sufficiently easy, the waste of redoing work may be insignificant.)
 
 I can see that some applications might be easier to build with Web Objects, 
 just as for building certain types of fat clients Visual Basic 6 is easier to 
 use than Swing.  But for more sophisticated presentation logic, the Wicket 
 approach will facilitate the use of design patterns, refactoring, and other 
 modern OO techniques.
 
 -Original Message-
 From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Alex
 Sent: Wednesday, August 30, 2006 3:15 PM
 To: wicket-user@lists.sourceforge.net
 
 - Java code is MUCH cleaner with WO, you keep in code only data pushed in the 
 presentation layer and actions. No need to add components and configure them 
 in java code.
 
 - Components are declared in HTML, configured in another file, binding 
 (configuring) the component with the java class. This approach need tools, WO 
 has some nice tools for this.
 
 - Both frameworks make creation of custom components easy (unlike JSF!!!)
 
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Re: [Wicket-user] WebObjects open source?

[Anders Peterson]

I'm waiting for the official WO 5.4 announcement from Apple. /Anders

Alexandru Popescu wrote:

 According to http://www.infoq.com/news/WebObjects-Open-Sourced, the
 news seems real.
 
 ../alex
 --
 ..w( the_mindstorm )p.
 
 PS: can you point out what in your opinion is superior to Wicket from
 WebObjects ? e.g. a small comparision?

 -Ursprüngliche Nachricht-
 Von: [EMAIL PROTECTED]
 [mailto:[EMAIL PROTECTED] Im Auftrag
 von Anders Peterson
 Gesendet: Dienstag, 29. August 2006 10:41
 An: wicket-user@lists.sourceforge.net
 Betreff: Re: [Wicket-user] WebObjects open source?

 I know WebObjects much better than I know Wicket...

 The only reason I looked at Wicket is because Apple made some
 very strange decisions regarding licensing and support for
 other platforms about a year ago. Should the open source
 rumors be true (I'm not sure they are) I'll most likely go
 back to (stay with) WebObjects.

 This is a good place to start:

 http://en.wikipedia.org/wiki/WebObjects


 WebObjects has a very good on-line community, and there is a
 collection of open source frameworks and development tools
 that support/extend it.
 One you should definitely know about is WOLips:

 http://objectstyle.org/confluence/display/WOL/Home


 /Anders

 Martijn Dashorst wrote:
 Apple will make (most of) WebObjects open source with the
 new release
 (http://www.thinksecret.com/news/0608webobjects.html).

 Has anyone worked with WebObjects and wishes to comment on
 it compared
 to Wicket?

 Martijn


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Re: [Wicket-user] WebObjects open source?

[Anders Peterson]

Frank Silbermann wrote:

 Just glancing at your link for a few seconds, and reading the earlier
 comment that it looks like ASP.NET with VS.NET, I would guess that Web
 Objects provides a library of components that you can paint onto your
 pages, automatically generating the custom tags in your HTML file.

Yes, but you don't have to do it that way.

 Suppose you are customizing a component by setting many properties, and
 using it with those settings on fifty different webpages.  In Wicket, I
 can create a method which instantiates a web display object, sets its
 properties and returns it.  I can then call that method every time I
 want to instantiate a web object with those settings.

You can, of course, do that with WO as well.

 What facility does Web Objects provide that lets you avoid having to
 re-set those properties fifty times? 

... and however you choose to construct your web display object it is 
(naturally) also a component that can be used as a building block for 
other web display objects.

 (Isn't the inconvenience of adding slightly-customized variations of
 components to the toolset the reason most Swing GUI programmers end up
 building their GUI in code instead of using some IDE's graphical
 GUI-painter?)

Most people just don't want to change their way of doing things (and 
some graphical GUI-painters are not very good).

You seem to think there is only a fixed and limited set of components to 
work with - why assume something like that?

/Anders

 -Original Message-
 From: [EMAIL PROTECTED]
 [mailto:[EMAIL PROTECTED] On Behalf Of Anders
 Peterson
 Sent: Tuesday, August 29, 2006 12:51 PM
 To: wicket-user@lists.sourceforge.net
 Subject: Re: [Wicket-user] WebObjects open source?
 
 Not sure what to say... it makes me productive...
 
 It's not really fair to compare Wicket and WebObjects (WO). WO is a
 whole package of frameworks and tools that function well together (but
 can be used independently). Wicket needs team mates to replace WO
 entirely.
 
 With Wicket any html and java editors will do just fine. This is
 generally a good thing (I think) but it's also a restriction. With
 WebObjects the tools are part of what makes the package great:
 
 Start up the WOBuilder tool, create a WODisplayGroup instance and start
 (visually) combining WOComponents and binding them to data. It's fast
 and intuitive...
 
 /Anders
 
 http://developer.apple.com/documentation/WebObjects/Conceptual/WO53_WOBu
 ilderGuide/
 
 http://developer.apple.com/documentation/webobjects/Reference/API/com/we
 bobjects/appserver/WODisplayGroup.html
 http://developer.apple.com/documentation/Webobjects/Reference/API/com/we
 bobjects/appserver/WOComponent.html
 
 Eelco Hillenius wrote:
 :) It's one of my favorite parts of Wicket, so sure.

 What about the strong points of WebObjects, what are the things you 
 really like about that?

 Eelco

 On 8/29/06, Anders Peterson [EMAIL PROTECTED] wrote:
 Sure, if it has to be just like Wicket to compete; you win. ;-)

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Re: [Wicket-user] WebObjects open source?

[Anders Peterson]

There are other WO developers better suited to answer those question. 
I'm cross posting to webobjects-talk and hope someone will pick up the 
thread.

/Anders

Igor Vaynberg wrote:
 I guess i would be interested in knowing how web objects stores state 
 and how the back button is handled.
 
 is the state stored like tapestry - disjointed from the components?
 
 do components have to be beans?
 
 does it store undo history to handle the back button somewhere when the 
 state is stored serverside in session and not in urls?
 
 what drew me to wicket and away from tapestry were the following things:
 
 in wicket i could have very dynamic component hierarchies. i can take 
 any panel and switch it with any other panel, move components around, 
 etc. in tapestry the hierarchy is pretty much fixed from the creation of 
 the page because of how it defines, pools, and handles state.
 
 in wicket i can use good citizen pattern with constructors and have 
 private/protected final variables because wicket is unmanaged and so 
 components dont have to be beans. in tapestry components have to be 
 beans so none of these are possible. also to have your state persisted 
 you have to have your getters/setters abstract and declared (at least as 
 of a late 3.x).
 
 wicket keeps undo history so it can restore the proper state when the 
 back button is used. when you use tapestry you are pretty much on your 
 own when you use session scope.
 
 i tried to look for this stuff in wo docs but couldnt really find 
 anything useful.
 
 -Igor

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Re: [Wicket-user] WebObjects open source?

[Anders Peterson]

I know WebObjects much better than I know Wicket...

The only reason I looked at Wicket is because Apple made some very 
strange decisions regarding licensing and support for other platforms 
about a year ago. Should the open source rumors be true (I'm not sure 
they are) I'll most likely go back to (stay with) WebObjects.

This is a good place to start:

http://en.wikipedia.org/wiki/WebObjects


WebObjects has a very good on-line community, and there is a collection 
of open source frameworks and development tools that support/extend it. 
One you should definitely know about is WOLips:

http://objectstyle.org/confluence/display/WOL/Home


/Anders

Martijn Dashorst wrote:
 Apple will make (most of) WebObjects open source with the new release
 (http://www.thinksecret.com/news/0608webobjects.html).
 
 Has anyone worked with WebObjects and wishes to comment on it compared
 to Wicket?
 
 Martijn
 


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Re: [Wicket-user] WebObjects open source?

[Anders Peterson]

Sure, if it has to be just like Wicket to compete; you win. ;-)

/Anders

Eelco Hillenius wrote:
 I looked into some demos briefly yesterday, but it looks to me that
 it's quite different from Wicket. It looks nice when it comes to tool
 integration etc, but I immediately missed the 'just Java programming'/
 OO part of Wicket.
 
 Eelco
 
 
 On 8/29/06, Anders Peterson [EMAIL PROTECTED] wrote:
 Korbinian Bachl wrote:
 Hi Anders,

 i heard much about WebObjects, and have a qustion: is it true, that you need
 apple (OS) in order to run it ? - where here with Windows/ Linux
 environments
 Not at all. I use version 5.2.4. It has official support for development
 tools on Mac and Windows and deployment on Mac, Windows and Solaris. You
 can run it on any j2se (1.4) platform. Many use Linux.

 About a year ago Apple released 5.3:
 1) Development environment mas made part of Apple's Xcode, and
 distributed for free.
 2) Deployment license is bundled with Mac OS X Server.
 3) Officially Apple only supports their own hardware and OS. There are
 very good open source tools (better than Apple's) that support
 development on any platform, and you can deploy on any platform, but you
 have to buy Mac OS X Server to get a deployment license.


 Recently at WWDC Apple made some new announcement. I don't know exactly
 what it was. All I know is this:

 http://lists.apple.com/archives/webobjects-dev/2006/Aug/msg01144.html


 /Anders

 Regards,

 Korbinian

 PS: can you point out what in your opinion is superior to Wicket from
 WebObjects ? e.g. a small comparision?

 -Ursprüngliche Nachricht-
 Von: [EMAIL PROTECTED]
 [mailto:[EMAIL PROTECTED] Im Auftrag
 von Anders Peterson
 Gesendet: Dienstag, 29. August 2006 10:41
 An: wicket-user@lists.sourceforge.net
 Betreff: Re: [Wicket-user] WebObjects open source?

 I know WebObjects much better than I know Wicket...

 The only reason I looked at Wicket is because Apple made some
 very strange decisions regarding licensing and support for
 other platforms about a year ago. Should the open source
 rumors be true (I'm not sure they are) I'll most likely go
 back to (stay with) WebObjects.

 This is a good place to start:

 http://en.wikipedia.org/wiki/WebObjects


 WebObjects has a very good on-line community, and there is a
 collection of open source frameworks and development tools
 that support/extend it.
 One you should definitely know about is WOLips:

 http://objectstyle.org/confluence/display/WOL/Home


 /Anders

 Martijn Dashorst wrote:
 Apple will make (most of) WebObjects open source with the
 new release
 (http://www.thinksecret.com/news/0608webobjects.html).

 Has anyone worked with WebObjects and wishes to comment on
 it compared
 to Wicket?

 Martijn


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Re: [Wicket-user] WebObjects open source?

[Anders Peterson]

Not sure what to say... it makes me productive...

It's not really fair to compare Wicket and WebObjects (WO). WO is a 
whole package of frameworks and tools that function well together (but 
can be used independently). Wicket needs team mates to replace WO entirely.

With Wicket any html and java editors will do just fine. This is 
generally a good thing (I think) but it's also a restriction. With 
WebObjects the tools are part of what makes the package great:

Start up the WOBuilder tool, create a WODisplayGroup instance and start 
(visually) combining WOComponents and binding them to data. It's fast 
and intuitive...

/Anders

http://developer.apple.com/documentation/WebObjects/Conceptual/WO53_WOBuilderGuide/

http://developer.apple.com/documentation/webobjects/Reference/API/com/webobjects/appserver/WODisplayGroup.html
http://developer.apple.com/documentation/Webobjects/Reference/API/com/webobjects/appserver/WOComponent.html

Eelco Hillenius wrote:
 :) It's one of my favorite parts of Wicket, so sure.
 
 What about the strong points of WebObjects, what are the things you
 really like about that?
 
 Eelco
 
 On 8/29/06, Anders Peterson [EMAIL PROTECTED] wrote:
 Sure, if it has to be just like Wicket to compete; you win. ;-)

 
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Re: [Wicket-user] Wicket 2.0

[Anders Peterson]

Can you make daily/weekly builds available? /Anders

Jerry Smith wrote:
 Looks like there are some very nice changes coming to Wicket in 2.0!  Is
 there a timeline on when there might be binary drops to play with and a
 possible target release date?
 
 -Original Message-
 From: [EMAIL PROTECTED] [mailto:wicket-user-
 [EMAIL PROTECTED] On Behalf Of Eelco Hillenius
 Sent: Monday, June 12, 2006 3:03 AM
 To: Wicket User List
 Subject: [Wicket-user] Wicket 2.0

 Hi all,

 I think I sent out a similar message like this before, but I couldn't
 find it, so just to be sure...

 We've been working for about a month on Wicket 2.0 now. The meat of
 the changes are in, and for the not-so-faint-hearted: please check out
 trunk (Wicket 1.2 is maintained in the WICKET_1_2 branch) and play
 with it.

 I am doing my best (soon to be we are doing our best) to keep track on
 changes at our wiki:
 http://wicket-wiki.org.uk/wiki/index.php/Migrate-2.0

 If you play with 2.0 and have any questions on how to achieve things/
 possible bugs/ etc, please let us know on the list so that we can help
 you and/ or we can expand the migration document with some more useful
 tips.

 Hope you have fun with it!

 Eelco


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[Wicket-user] Indeces based access with PropertyModel

[Anders Peterson]

Hi all,

With Wicket 1.1 (ognl) I could do this:

Loop tmpLoop = new Loop(instruments, Instrument.ALL.size()) {

protected void populateItem(LoopItem anItem) {

int tmpIter = anItem.getIteration();

anItem.add(new Label(name, 
Instrument.ALL.get(tmpIter).getName()));
anItem.add(new Label(market, new 
PropertyModel(tmpMod, marketWeights.toBigDecimal( + tmpIter + ,0;
anItem.add(new Label(raw, new PropertyModel(tmpMod, 
modifiedWeights.toBigDecimal( + tmpIter + ,0;
anItem.add(new Label(normalised, new 
PropertyModel(tmpMod, normalisedWeights.toBigDecimal( + tmpIter + 
,0;
anItem.add(new Label(optimised, new 
PropertyModel(tmpMod, optimisedWeights.toBigDecimal( + tmpIter + ,0;

}

};


Wicket 1.2 can't handle this:

...toBigDecimal( + tmpIter + ,0)

as a property.


Currently thinking about alternative solution. With my limited 
experience with Wicket I can only come up with rather messy solutions.


Any suggestions?

/Anders
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[Wicket-user] Where is the OGNL replacement code in wicket 1.2?

[Anders Peterson]

I'm looking for the equivalent of Ognl.setValue(...) and guessing I 
should use wicket.util.lang.PropertyResolver.setvalue(...);


The wicket.util.object package (referred to in the wiki migrate 
instructions) does not exist.


Would it be possible to add a method performActionNamed(String 
expression) to wicket.Component? That's what I'm aiming for...


/Anders
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[Wicket-user] Re: Where is the OGNL replacement code in wicket 1.2?

[Anders Peterson]

A different web application framework that I've worked with has ognl 
available everywhere. It's extremely convenient and powerful!


http://developer.apple.com/documentation/WebObjects/Reference/API5.2.4/com/webobjects/foundation/NSKeyValueCoding.html

Seems to me it wouldn't be difficult to add...

/Anders

Anders Peterson wrote:
I'm looking for the equivalent of Ognl.setValue(...) and guessing I 
should use wicket.util.lang.PropertyResolver.setvalue(...);


The wicket.util.object package (referred to in the wiki migrate 
instructions) does not exist.


Would it be possible to add a method performActionNamed(String 
expression) to wicket.Component? That's what I'm aiming for...


/Anders



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[Wicket-user] Re: Where is the OGNL replacement code in wicket 1.2?

[Anders Peterson]

Well...

public void performActionNamed(String anExpression) {
PropertyResolver.getValue(anExpression, this);
}

I'm sure it needs to return anything, but maybe it could be passed some 
sort of context object (if available).


/Anders

Johan Compagner wrote:

Yes it is the wicket.util.lang.PropertyResolver class

What would that perform do?
How does it look like?

PropertyResolver has limited support for executing methods.
something like:
Object value = PropertyResolver.getValue (getAddressArray(), person);
is supported.

johan



On 5/8/06, *Anders Peterson* [EMAIL PROTECTED] 
mailto:[EMAIL PROTECTED] wrote:


I'm looking for the equivalent of Ognl.setValue(...) and guessing I
should use wicket.util.lang.PropertyResolver.setvalue(...);

The wicket.util.object package (referred to in the wiki migrate
instructions) does not exist.

Would it be possible to add a method performActionNamed(String
expression) to wicket.Component? That's what I'm aiming for...

/Anders
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[Wicket-user] Re: Where is the OGNL replacement code in wicket 1.2?

[Anders Peterson]

Anders Peterson wrote:

I'm sure it needs to return anything, but maybe it could be passed some 
sort of context object (if available).


Should be: I'm NOT sure it needs to return anything, but maybe it could 
be passed some sort of context object (if available).



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[Wicket-user] Re: Where is the OGNL replacement code in wicket 1.2?

[Anders Peterson]

What I'm asking for is not to be able to use ognl (or similar) on top of 
wicket, but to have something equivalent inside it.


An interface PropertyCoding (NSKeyValueCoding) that is then implemented 
by *all* wicket classes.


/Anders

Eelco Hillenius wrote:

You can still use OGNL, just not by default for the PropertyModels
etc. We removed OGNL as it had seriously bad performance - it showed
up as the last hotspot we had when profiling Wicket -, and it doesn't
seem to be maintained actively anymore (in fact, I had to wait for a
bug fix for almost a year some time ago).

Eelco


On 5/8/06, Anders Peterson [EMAIL PROTECTED] wrote:

A different web application framework that I've worked with has ognl
available everywhere. It's extremely convenient and powerful!

http://developer.apple.com/documentation/WebObjects/Reference/API5.2.4/com/webobjects/foundation/NSKeyValueCoding.html 



Seems to me it wouldn't be difficult to add...

/Anders

Anders Peterson wrote:
 I'm looking for the equivalent of Ognl.setValue(...) and guessing I
 should use wicket.util.lang.PropertyResolver.setvalue(...);

 The wicket.util.object package (referred to in the wiki migrate
 instructions) does not exist.

 Would it be possible to add a method performActionNamed(String
 expression) to wicket.Component? That's what I'm aiming for...

 /Anders


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[Wicket-user] Re: Where is the OGNL replacement code in wicket 1.2?

[Anders Peterson]

I assume you mean PropertyResolver.getValue(String expression, Object 
object);


That's not the kind of context I meant. I was thinking there could be an 
additional context parameter - maybe RequestCycle. Don't know if that is 
possible or necessary. It was just an idea.


I would specifically like to have the performAction method in Page, but 
why not put it in Component.


/Anders

Johan Compagner wrote:

You also have this now.
Just call PropertyResolver.getValue(contextObject, propertyString)

where should that performAction method be located?

On 5/8/06, * Anders Peterson* [EMAIL PROTECTED] 
mailto:[EMAIL PROTECTED] wrote:


A different web application framework that I've worked with has ognl
available everywhere. It's extremely convenient and powerful!


http://developer.apple.com/documentation/WebObjects/Reference/API5.2.4/com/webobjects/foundation/NSKeyValueCoding.html

Seems to me it wouldn't be difficult to add...

/Anders

Anders Peterson wrote:
  I'm looking for the equivalent of Ognl.setValue(...) and guessing I
  should use wicket.util.lang.PropertyResolver.setvalue(...);
 
  The wicket.util.object package (referred to in the wiki migrate
  instructions) does not exist.
 
  Would it be possible to add a method performActionNamed(String
  expression) to wicket.Component? That's what I'm aiming for...
 
  /Anders


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[Wicket-user] Re: Where is the OGNL replacement code in wicket 1.2?

[Anders Peterson]

Johan Compagner wrote:


then we get partial scripting inside java/page.


Didn't know that was a bad thing...


Why would we have that. What would you call with performAction?


We can already do this:

PropertyResolver.getValue(expression, this.getPage());

I'd like to just be able to type:

this.getValue(expression);

or

this.getPage().getValue(expression);


...or, something like that.

Did you look at the NSKeyValueCoding docs?

/Anders


On 5/8/06, *Anders Peterson*  [EMAIL PROTECTED] 
mailto:[EMAIL PROTECTED] wrote:


I assume you mean PropertyResolver.getValue(String expression, Object
object);

That's not the kind of context I meant. I was thinking there could be an
additional context parameter - maybe RequestCycle. Don't know if that is
possible or necessary. It was just an idea.

I would specifically like to have the performAction method in Page, but
why not put it in Component.

/Anders

Johan Compagner wrote:
  You also have this now.
  Just call PropertyResolver.getValue(contextObject, propertyString)
 
  where should that performAction method be located?
 
  On 5/8/06, * Anders Peterson*  [EMAIL PROTECTED]
mailto:[EMAIL PROTECTED]
  mailto:[EMAIL PROTECTED] mailto:[EMAIL PROTECTED] wrote:
 
  A different web application framework that I've worked with
has ognl
  available everywhere. It's extremely convenient and powerful!
 
 
http://developer.apple.com/documentation/WebObjects/Reference/API5.2.4/com/webobjects/foundation/NSKeyValueCoding.html


http://developer.apple.com/documentation/WebObjects/Reference/API5.2.4/com/webobjects/foundation/NSKeyValueCoding.html
 
  Seems to me it wouldn't be difficult to add...
 
  /Anders
 
  Anders Peterson wrote:
I'm looking for the equivalent of Ognl.setValue(...) and
guessing I
should use wicket.util.lang.PropertyResolver.setvalue(...);
   
The wicket.util.object package (referred to in the wiki
migrate
instructions) does not exist.
   
Would it be possible to add a method performActionNamed(String
expression) to wicket.Component? That's what I'm aiming for...
   
/Anders
 
 
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  security?
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  job easier
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  Geronimo
 
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[Wicket-user] Re: More on refreshing page contents

[Anders Peterson]

I'm using a Loop now (on a different page).

Then I get a WicketRuntimeException: The component(s) below failed to 
render:
1. [Component id = name, page = se.optimatika.blapp.gui.PgEvaluate, path 
= 3:instruments:0:name.Label, isVisible = true, isVersioned = true]

..

I can't see what's wrong. The component tree (on the error page) looks 
ok. The toString method on ALL model objects seems to have worked.


What is usually the cause of not being able to render a component?

/Anders

Eelco Hillenius wrote:

Anything would have worked as long as the list that you return is
fresh by either using a detachable model, or one of the models that
re-evaluate on every call, like PropertyModels or e.g. a model like:

IModel listViewModel = new Model() {
  Object getObject(Component c) {
return tmpInstrument.getCorrelations();
  }
}

There is no specific advantage of Loops over ListViews in this case.
Loops are simply designed to be a simpler but more limited version. of
ListView.

Eelco



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[Wicket-user] Re: More on refreshing page contents

[Anders Peterson]

this is the page. Can't I add to the LoopItem?

Loop tmpLoop = new Loop(instruments, Instrument.ALL.size()) {

protected void populateItem(LoopItem anItem) {

int tmpIter = anItem.getIteration();

anItem.add(new Label(name, 
Instrument.ALL.get(tmpIter).getName()));
anItem.add(new Label(market, new 
PropertyModel(tmpMod, marketWeights.toBigDecimal( + tmpIter + ,0;
anItem.add(new Label(raw, new PropertyModel(tmpMod, 
modifiedWeights.toBigDecimal( + tmpIter + ,0;
anItem.add(new Label(normalised, new 
PropertyModel(tmpMod, normalisedWeights.toBigDecimal( + tmpIter + 
,0;
anItem.add(new Label(optimised, new 
PropertyModel(tmpMod, optimisedWeights.toBigDecimal( + tmpIter + ,0;

}

};

this.add(tmpLoop);



Igor Vaynberg wrote:

this usually means you added a component to the component tree, but it was
never referenced in the markup so it was not rendered - nor will it ever be..

If you show us more code we might be able to help you more.


-Igor


On 4/6/06, Anders Peterson [EMAIL PROTECTED] wrote:

I'm using a Loop now (on a different page).

Then I get a WicketRuntimeException: The component(s) below failed to
render:
1. [Component id = name, page = se.optimatika.blapp.gui.PgEvaluate, path
= 3:instruments:0:name.Label, isVisible = true, isVersioned = true]
..

I can't see what's wrong. The component tree (on the error page) looks
ok. The toString method on ALL model objects seems to have worked.

What is usually the cause of not being able to render a component?

/Anders

Eelco Hillenius wrote:

Anything would have worked as long as the list that you return is
fresh by either using a detachable model, or one of the models that
re-evaluate on every call, like PropertyModels or e.g. a model like:

IModel listViewModel = new Model() {
  Object getObject(Component c) {
return tmpInstrument.getCorrelations();
  }
}

There is no specific advantage of Loops over ListViews in this case.
Loops are simply designed to be a simpler but more limited version. of
ListView.

Eelco


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[Wicket-user] More on refreshing page contents

[Anders Peterson]

Hi All,

With one page I'm displaying a matrix of numbers and I have a problem 
updating/refreshing it. I roughly understand why it doesn't work, but I 
don't know what the best/correct way to make it work is.


Basically I have a ListView of rows and the last column in each row is 
in turn a ListView creating more columns to the right. That final 
ListView is implemented with the code you can see below.


How was I supposed to have done this to have updating/refreshing happen 
as automagically as possible?


(I'm using Wicket 1.1.1)

/Anders

ListView tmpCorrList = new ListView(ID_CORRELATIONS, 
tmpInstrument.getCorrelations()) {


BigDecimal tmpCoefficient;

public void populateItem(final ListItem anItem) {

tmpCoefficient = (BigDecimal) anItem.getModelObject();

anItem.add(new Label(ID_COEFFICIENT, tmpCoefficient.toString()));

}


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[Wicket-user] Re: More on refreshing page contents

[Anders Peterson]

Igor Vaynberg wrote:

On 4/4/06, Anders Peterson [EMAIL PROTECTED] wrote:

That worked!

I also had to move the declaration of tmpInstrument to inside the
populateItem method (otherwise all rows were the same).


not really sure what you mean here


I have two ListViews - one for the rows and one for the columns. The 
tmpInstrument variable was declared as a member of the first ListView. I 
only assigned new values to it in the populateItem method. That resulted 
in all rows being equal. If I moved the declaration to inside the 
populateItem method everything works as it should. (All code we've 
discussed has been inside the populateItem method of the first ListView).


Object load() {
return tmpInstrument.getCorrelations();
}

I created several rows each with its own LoadableDetachableModel, but 
all of them referenced the same tmpInstrument.


/Anders


Thanks!

(I feel this was a bit more complicated than it should be.)

Could this have been done with a CompoundPropertyModel and Loop:s
instead of ListView:s - using ognl like instrument[i].correlation[j] ?



the problem is that if you give listview a list it will store that list in
session. what you need is a way to tell it to pull the list every time it
renders, thats what detachable models are for.

-Igor




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[Wicket-user] Re: More on refreshing page contents

[Anders Peterson]

That worked!

I also had to move the declaration of tmpInstrument to inside the 
populateItem method (otherwise all rows were the same).


Thanks!

(I feel this was a bit more complicated than it should be.)

Could this have been done with a CompoundPropertyModel and Loop:s 
instead of ListView:s - using ognl like instrument[i].correlation[j] ?


/Anders

Igor Vaynberg wrote:

actually, the string in the label is fine because the listview rebuilds its
items on every request so new labels will be created.

the problem is here:
ListView tmpCorrList = new ListView(ID_CORRELATIONS,
tmpInstrument.getCorrelations())

this is making listview use the same list w/out updating it on every
request, this should be a detachable model so that a fresh list is used on
every request:

IModel listViewModel=new LoadableDetachableModel() { Object load() { return
tmpInstrument.getCorrelations(); }}
ListView tmpCorrList = new ListView(ID_CORRELATIONS, listViewModel) {
...
};

hope this helps,
-Igor

On 4/4/06, Maurice Marrink [EMAIL PROTECTED] wrote:

Hi,

I am also wrestling with the matrix beast and am still exploring my
options.
However i might be able to help you out.
In your code the label is given a string as diplay value. This string
is not updated when the item model is. So you should give the label
the model of the item.
If you want some fancy numberformatting to take place you can always
overwrite the getConverter() method of your label to convert the
bigdecimal to a string there.

Hope this helps.

Maurice

On 4/4/06, Anders Peterson wrote:

Hi All,

With one page I'm displaying a matrix of numbers and I have a problem
updating/refreshing it. I roughly understand why it doesn't work, but I
don't know what the best/correct way to make it work is.

Basically I have a ListView of rows and the last column in each row is
in turn a ListView creating more columns to the right. That final
ListView is implemented with the code you can see below.

How was I supposed to have done this to have updating/refreshing happen
as automagically as possible?

(I'm using Wicket 1.1.1)

/Anders

ListView tmpCorrList = new ListView(ID_CORRELATIONS,
tmpInstrument.getCorrelations()) {

   BigDecimal tmpCoefficient;

   public void populateItem(final ListItem anItem) {

   tmpCoefficient = (BigDecimal) anItem.getModelObject();

   anItem.add(new Label(ID_COEFFICIENT, tmpCoefficient.toString()));

}


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[Wicket-user] Refreshing page contents

[Anders Peterson]

Hi,

I have a problem refreshing page contents.

This did work as intended before I updated the database model. The 
page's code has not been changed other than in one case I had to change 
what objects I loop through. The page functions exactly as before except 
for one thing: When submitting the form the read/display only components 
(Labels inside the Form) are not updated.


I've tried calling modelChanged() and setVisible(boolean) but it doesn't 
change anything (and I did not have to do this before). The get methods 
that produce the values are never accessed after the page is first built.


The application menu is a collection of BookmarkablePageLink:s. Even 
when I return to this page after visiting other pages those get methods 
are not called. I suspect this is the key to the solution - but I don't 
get it! Can you help?


/Anders
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[Wicket-user] Re: Refreshing page contents

[Anders Peterson]

Thanks for trying to help,

I haven't solved the problem yet, but I think I know what it is - and it 
has nothing to do with Wicket.


Since I did change the database model I introduced cover methods similar 
to this:


getMarketWeight() {
return ModelUtils.getMarketWeight(this.getUser(), this);
}

... so that I wouldn't have to alter my Wicket pages. Unfortunately I 
ended up with different instances of business objects (representing the 
same database row) in different parts of the same page, and...


The exact details are too complicated too explain here, and they have 
nothing to do with Wicket.


/Anders

Juergen Donnerstag wrote:

Sounds like your browser is using its local cache. Try
meta http-equiv=Expires content=-1 /
meta http-equiv=Pragma content=no-cache /
meta http-equiv=Cache-Control content=no-cache /

Juergen

On 3/30/06, Anders Peterson [EMAIL PROTECTED] wrote:

Hi,

I have a problem refreshing page contents.

This did work as intended before I updated the database model. The
page's code has not been changed other than in one case I had to change
what objects I loop through. The page functions exactly as before except
for one thing: When submitting the form the read/display only components
(Labels inside the Form) are not updated.

I've tried calling modelChanged() and setVisible(boolean) but it doesn't
change anything (and I did not have to do this before). The get methods
that produce the values are never accessed after the page is first built.

The application menu is a collection of BookmarkablePageLink:s. Even
when I return to this page after visiting other pages those get methods
are not called. I suspect this is the key to the solution - but I don't
get it! Can you help?

/Anders
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[Wicket-user] Re: Refreshing dynamic images

[Anders Peterson]

1) setCacheable: Done! With dynamic images it seems like a good idea 
to have this set to false by default.



2) random number as a query parameter: I had thought about giving the 
images different names with each request, but I didn't know (still 
don't) how to do that. The generated html looks like this:


trtd scope=colimg width=600 height=300 wicket:id=image2 
src=/BLApp/app?path=3:image2amp;interface=IResourceListener//td/tr


I'll look for documentation on how to do this...


3) Set the headers on the response: You mean some header that tells 
the browser(s) not to cache the page - is there a standard for that? I 
have no idea which browsers will be used, and I want the app to work 
with any browser.



Thanks, /Anders


Anders Peterson wrote:

Hi,

On one page I'm displaying dynamic charts (JFreeChart) as images. The 
charts, the data they're based on, are constantly changed by the users.


The problem (as I understand it): The web browser doesn't know that the 
image has changed and therefore (sometimes) uses a cached image. Which 
means incorrect data is displayed.


How can I make sure the browser always asks for a fresh image?

/Anders


Image tmpImage2 = new Image(image2, new SpclChartResource() {

public AbstractChartFactory getFactory() {

this.setHeight(300);
this.setWidth(600);

DefaultCategoryDatasetFactory retVal = new 
DefaultCategoryDatasetFactory();

retVal.setLegend(true);
retVal.setType(AbstractChartFactory.TYPE_BarChart);
...



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[Wicket-user] Re: Refreshing dynamic images

[Anders Peterson]

On a BookmarkablePageLink I can call setParameter(...) which has this 
effect.


How do I, with each request/response cycle, add or change a page 
parameter - I can't figure this out?


/Anders

Igor Vaynberg wrote:

the trick is to append a random number as a query parameter. that way the
browser has to fetch it again because it thinks its a different document.

-Igor


On 2/28/06, Martijn Dashorst [EMAIL PROTECTED] wrote:

Set the headers on the response.

The browser support is a bit flaky as I understand it, from the numerous
caching problems with pages across browsers (safari, IE and FF work
differently).

Martijn

On 2/28/06, Anders Peterson [EMAIL PROTECTED] wrote:

Hi,

On one page I'm displaying dynamic charts (JFreeChart) as images. The
charts, the data they're based on, are constantly changed by the users.

The problem (as I understand it): The web browser doesn't know that the
image has changed and therefore (sometimes) uses a cached image. Which
means incorrect data is displayed.

How can I make sure the browser always asks for a fresh image?

/Anders


Image tmpImage2 = new Image(image2, new SpclChartResource() {

public AbstractChartFactory getFactory() {

this.setHeight(300);
this.setWidth(600);

DefaultCategoryDatasetFactory retVal = new
DefaultCategoryDatasetFactory();
 retVal.setLegend(true);
retVal.setType(AbstractChartFactory.TYPE_BarChart);
...
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[Wicket-user] Re: Refreshing dynamic images

[Anders Peterson]

I was just about to suggest that some of Gwyn Evans' headers were set by 
wicket.


I found the setHeaders(...) method in WebResource that sets a couple of 
headers when/if it is not cacheable. Which headers are set if it is 
cacheable, and where is that done? (I don't find my way around the 
wicket framework.)


/Anders

Johan Compagner wrote:

if you set cacheable to false then it should work for you out of the box
because then no caching is set and the lastmodified time is set to -1
The most browsers shouldn't cache it at all.

The problem you had is that when it is enabled then we are setting some
default caching headers
and we set the last modified time.

for our DynamicByteArrayResource i have made it non cacheable by default
now. I guess this is a better default.

johan


On 3/1/06, Anders Peterson [EMAIL PROTECTED] wrote:

1) setCacheable: Done! With dynamic images it seems like a good idea
to have this set to false by default.


2) random number as a query parameter: I had thought about giving the
images different names with each request, but I didn't know (still
don't) how to do that. The generated html looks like this:

trtd scope=colimg width=600 height=300 wicket:id=image2
src=/BLApp/app?path=3:image2amp;interface=IResourceListener//td/tr

I'll look for documentation on how to do this...


3) Set the headers on the response: You mean some header that tells
the browser(s) not to cache the page - is there a standard for that? I
have no idea which browsers will be used, and I want the app to work
with any browser.


Thanks, /Anders


Anders Peterson wrote:

Hi,

On one page I'm displaying dynamic charts (JFreeChart) as images. The
charts, the data they're based on, are constantly changed by the users.

The problem (as I understand it): The web browser doesn't know that the
image has changed and therefore (sometimes) uses a cached image. Which
means incorrect data is displayed.

How can I make sure the browser always asks for a fresh image?

/Anders


Image tmpImage2 = new Image(image2, new SpclChartResource() {

public AbstractChartFactory getFactory() {

this.setHeight(300);
this.setWidth(600);

DefaultCategoryDatasetFactory retVal = new
DefaultCategoryDatasetFactory();
retVal.setLegend(true);
retVal.setType(AbstractChartFactory.TYPE_BarChart);
...


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[Wicket-user] Refreshing dynamic images

[Anders Peterson]

Hi,

On one page I'm displaying dynamic charts (JFreeChart) as images. The 
charts, the data they're based on, are constantly changed by the users.


The problem (as I understand it): The web browser doesn't know that the 
image has changed and therefore (sometimes) uses a cached image. Which 
means incorrect data is displayed.


How can I make sure the browser always asks for a fresh image?

/Anders


Image tmpImage2 = new Image(image2, new SpclChartResource() {

public AbstractChartFactory getFactory() {

this.setHeight(300);
this.setWidth(600);

DefaultCategoryDatasetFactory retVal = new 
DefaultCategoryDatasetFactory();
retVal.setLegend(true);
retVal.setType(AbstractChartFactory.TYPE_BarChart);
...
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[Wicket-user] Re: VOTE

[Anders Peterson]

Eelco Hillenius wrote:


1. Give me the constructor change and the Java 5 functionality in one
pass (Wicket 2.0)


Note sure what the constructor change is. I vote for getting Java5 
functionality as soon as possible.


/Anders
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[Wicket-user] Re: Updating a model using DropDownChoice

[Anders Peterson]

This bug is easy to work around, but it affects how you code at a very 
low/basic level. When is the next maintenace release scheduled? /Anders


Johan Compagner wrote:

ok i think i have fixed it. Must check it out but now you can do
setModelObject on youre root component:

if (!getComparator().compareValue(this, object))
{
modelChanging();

if (getFlag(FLAG_HAS_ROOT_MODEL))
{
getRootModel(model).setObject(null, object);
}
else
{
model.setObject(this, object);
}
modelChanged();
}
return this;

johan


On 11/23/05, Johan Compagner [EMAIL PROTECTED] wrote:


That is a bug.
for example Component.getModelObject() does this:

// If this component has the root model for a compound model
if (getFlag(FLAG_HAS_ROOT_MODEL))
{
// we need to return the root model and not a property of the
// model
Object result = getRootModel(model);
if ((result instanceof IModel))
{
result = ((IModel)result).getObject(null);
}
return result;
}

// Get model value for this component
return model.getObject(this);

and setModelObject()

modelChanging();
model.setObject(this, object);
modelChanged();

Thats wrong. It should be the same kind of check for that setObject()
And call it will null if it is the root model of itself instead of giving
this with the call.

johan

On 11/22/05, Christian Essl [EMAIL PROTECTED] wrote:


On Tue, 22 Nov 2005 16:10:23 +0100, Anders Peterson
[EMAIL PROTECTED] wrote:



Hi,

There are a couple of things I don't understand.

1) I have a form using a CompoundPropertyModel with a HashMap as the
initial model object. When I later (after having made a choice in a
DropDownChoice) call

this.getForm().setModelObject(aNewModelObject);

nothing in the gui is updated. Typically I have components declared


like


tmpForm.add(new TextField(ID_SPAN));

that I'd like to have updated.



Component.setModelObject (Object obj) does call IModel.setObject
(this,obj).
The CompountPropertyModel than takes the id of the component and
interprets it as a bean expression into the underlying Object (or in
case
the the CoumpoundPropertyModel wraps another model the Object from the
wrapped model).

So in your case:
==form.setModelObject(aNew)==CompoundPropModel.setObject(form,aNew)==
map.put(form.getId(),aNew);

There are a few solutions (and others):
1.) keep the underlying map in an instance variable und access it (in
case
you do not use
detachable things).
2.) use form.getModel().setObject(null,new Map())


--
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Mathematics, Linear Algebra and Optimisation with Java


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[Wicket-user] Re: Formatting numbers in Labels

[Anders Peterson]

Using BigDecimal instead of Double solved my current problem.

Later I'll have to make something like a PercentageConverter. Actually 
that could be a generic conveter that multiplies/divides by a factor and 
 applies a unit.


Thanks...
/Anders

Christian Essl wrote:

If you use BigDecimals this should work out of the box.

To provide your own format you can override getConverter() on the Label 
or for the whole application Application.getConverterFactory(). For 
details see the wicket page on custom converters:

http://www.wicket-wiki.org.uk/wiki/index.php/Using_custom_converters

Christian

On Sun, 20 Nov 2005 13:20:02 +0100, Anders Peterson 
[EMAIL PROTECTED] wrote:



With code like this

anItem.add(new Label(return, new PropertyModel(tmpInstrument, 
diffusionProcess.localDrift)));


I'm trying to display small numbers.

1.1465448173051241E-12
1.2381223801081599E-6

In the generated page this just appears as 0 or -0. I want it to 
be 0.012381223801081599


How can I create Labels that know how to format these small numbers?

/Anders


--
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Mathematics, Linear Algebra and Optimisation with Java



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[Wicket-user] Updating a model using DropDownChoice

[Anders Peterson]

Hi,

There are a couple of things I don't understand.

1) I have a form using a CompoundPropertyModel with a HashMap as the 
initial model object. When I later (after having made a choice in a 
DropDownChoice) call


this.getForm().setModelObject(aNewModelObject);

nothing in the gui is updated. Typically I have components declared like

tmpForm.add(new TextField(ID_SPAN));

that I'd like to have updated.

2) In the same page I (sometimes) get an exception like the one below. 
What requires the DiffusionProcess class to be serializable?


DiffusionProcess is used to do some calculations, and instances are 
cached in objects used as model objects.


/Anders
--
http://ojalgo.org/

Mathematics, Linear Algebra and Optimisation with Java





Caused by: java.io.NotSerializableException: 
org.ojalgo.random.process.DiffusionProcess

at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1054)
	at 
java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1332)

at 
java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1304)
	at 
java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1247)

at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1052)
	at 
java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1332)

at 
java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1304)
	at 
java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1247)

at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1052)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:278)
at java.util.ArrayList.writeObject(ArrayList.java:531)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at 
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)

at java.lang.reflect.Method.invoke(Method.java:324)
at 
java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:809)
at 
java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1296)
	at 
java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1247)

at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1052)
	at 
java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1332)

at 
java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1304)
	at 
java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1247)

at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1052)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:278)
at java.util.HashMap.writeObject(HashMap.java:980)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at 
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)

at java.lang.reflect.Method.invoke(Method.java:324)
at 
java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:809)
at 
java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1296)
	at 
java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1247)

at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1052)
	at 
java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1332)

at 
java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1304)
	at 
java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1247)

at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1052)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:278)
at wicket.util.lang.Objects.clone(Objects.java:83)
... 33 more



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[Wicket-user] Re: Updating a model using DropDownChoice

[Anders Peterson]

The serializeable/transient explained the exceptions. That was easy to fix.

I have read the wiki entry on models (several times) but there is 
obviously something I don't get.


I don't think that the difference between

this.getForm().get(ID_SPAN).setModelObject(mySelectedView);

and

this.getForm().get(ID_SPAN).setModel(new PropertyModel(mySelectedView, 
ID_SPAN));


is well explaind.

Thanks for your time - Johan and Christian - it's working now.

/Anders

Johan Compagner wrote:

everything that is inside a Model as its model object
That is not detached (so not converted to a serializeable id or something
like that) must be serializeable of its own.

so youre DiffusionProcess must implement Serializeable
Or must be transient (then you must be able to recreate it from null)
Or must be converted to an id or something so that you can recreate it with
that information.

johan


On 11/22/05, Anders Peterson [EMAIL PROTECTED] wrote:


Hi,

There are a couple of things I don't understand.

1) I have a form using a CompoundPropertyModel with a HashMap as the
initial model object. When I later (after having made a choice in a
DropDownChoice) call

this.getForm().setModelObject(aNewModelObject);

nothing in the gui is updated. Typically I have components declared like

tmpForm.add(new TextField(ID_SPAN));

that I'd like to have updated.

2) In the same page I (sometimes) get an exception like the one below.
What requires the DiffusionProcess class to be serializable?

DiffusionProcess is used to do some calculations, and instances are
cached in objects used as model objects.

/Anders
--
http://ojalgo.org/

Mathematics, Linear Algebra and Optimisation with Java





Caused by: java.io.NotSerializableException:
org.ojalgo.random.process.DiffusionProcess
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1054)
at
java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java
:1332)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java
:1304)
at
java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java
:1247)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1052)
at
java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java
:1332)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java
:1304)
at
java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java
:1247)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1052)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:278)
at java.util.ArrayList.writeObject(ArrayList.java:531)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java
:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(
DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:809)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java
:1296)
at
java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java
:1247)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1052)
at
java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java
:1332)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java
:1304)
at
java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java
:1247)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1052)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:278)
at java.util.HashMap.writeObject(HashMap.java:980)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java
:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(
DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:809)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java
:1296)
at
java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java
:1247)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1052)
at
java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java
:1332)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java
:1304)
at
java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java
:1247)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1052)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:278)
at wicket.util.lang.Objects.clone(Objects.java:83)
... 33 more



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[Wicket-user] Formatting numbers in Labels

[Anders Peterson]

With code like this

anItem.add(new Label(return, new PropertyModel(tmpInstrument, 
diffusionProcess.localDrift)));


I'm trying to display small numbers.

1.1465448173051241E-12
1.2381223801081599E-6

In the generated page this just appears as 0 or -0. I want it to be 
0.012381223801081599


How can I create Labels that know how to format these small numbers?

/Anders
--
http://ojalgo.org/

Mathematics, Linear Algebra and Optimisation with Java



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[Wicket-user] Re: Image is not displayed

[Anders Peterson]

I'm trying to do precisely this, and I can't get it to work. I've tried 
all possible ways to do this - except one. ;-)


Using wicket 1.1rc2

I use Dreamweaver to do the html work, and eclipse for the Java part. 
The Dreamweaver site root is set to be the same as the java source 
folder root.


In the /se/optimatika/blapp/gui/PgCompare.html page there is a tag

img src=../../../../images/tmp_pie_1.gif width=300 height=300 /

All iamges are in /images/*

When I run the app I don't see the images. I've tried using both 
absolute and relative paths, and I've tried having the images in a lot 
of different places.


When you follow a static relative path from a run-time wicket page; 
where do you end up?


/Anders

Phil Kulak wrote:

Do you have a resource reference named images/delete.gif? Because if
you're just trying to make a static link to a static image, there's no
need to get Wicket involved:

img src=images/delete.gif type=image width=12 height=12
alt=[Delete] border=0 valign=middle /

On 10/10/05, Francis Amanfo [EMAIL PROTECTED] wrote:


Hi,

I have a Panel whose markup contains:

img src=images/delete.gif type=image wicket:id=deleteImage
width=12 height=12 alt=[Delete] border=0 valign=middle /

The markup is located in package org.foo.presentation
In my panel class located in the same package as the markup I do:

add(new Image(deleteImage, images/delete.gif))

The problem is the image doesn't get dsiplayed. Viewing the source html in
my browser I see:

img width=12 height=
12 type=image wicket:id=deleteImage
valign=middle border=0
src=/portal/app/resources/org.foo.presentation.PSBreadCrumbsPanel/images/delete_en_US.gif
alt=[Delete]
/

I don't get it. Any help?

Francis





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[Wicket-user] Re: Image is not displayed

[Anders Peterson]

Johan Compagner wrote:

is that img tag without any wicket:id? so there is no wicket component
attached to it?


Correct. There is no wicket:id.

The source code looks like this:

tr
td scope=colimg src=../../../../images/tmp_pie_1.gif 
width=300 height=300 //td
td scope=colimg src=../../../../images/tmp_pie_2.gif 
width=300 height=300 //td

  /tr

The html sent to the browser is exactly the same.


The url is exactly what it is there at runtime?

That is ofcourse not right. At runtime it should be:
/images/tmp_pie_1.gif


Are you saying that the designer needs to have a duplicate images folder 
in every java package?


I looked at the wicket-examples, that's how it seems to be done there.

/Anders


johan


On 10/19/05, Anders Peterson [EMAIL PROTECTED] wrote:


I'm trying to do precisely this, and I can't get it to work. I've tried
all possible ways to do this - except one. ;-)

Using wicket 1.1rc2

I use Dreamweaver to do the html work, and eclipse for the Java part.
The Dreamweaver site root is set to be the same as the java source
folder root.

In the /se/optimatika/blapp/gui/PgCompare.html page there is a tag

img src=../../../../images/tmp_pie_1.gif width=300 height=300 /

All iamges are in /images/*

When I run the app I don't see the images. I've tried using both
absolute and relative paths, and I've tried having the images in a lot
of different places.

When you follow a static relative path from a run-time wicket page;
where do you end up?

/Anders

Phil Kulak wrote:


Do you have a resource reference named images/delete.gif? Because if
you're just trying to make a static link to a static image, there's no
need to get Wicket involved:

img src=images/delete.gif type=image width=12 height=12
alt=[Delete] border=0 valign=middle /

On 10/10/05, Francis Amanfo [EMAIL PROTECTED] wrote:



Hi,

I have a Panel whose markup contains:

img src=images/delete.gif type=image wicket:id=deleteImage
width=12 height=12 alt=[Delete] border=0 valign=middle /

The markup is located in package org.foo.presentation
In my panel class located in the same package as the markup I do:

add(new Image(deleteImage, images/delete.gif))

The problem is the image doesn't get dsiplayed. Viewing the source html


in


my browser I see:

img width=12 height=
12 type=image wicket:id=deleteImage
valign=middle border=0



src=/portal/app/resources/org.foo.presentation.PSBreadCrumbsPanel/images/delete_en_US.gif
alt=[Delete]
/

I don't get it. Any help?

Francis





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[Wicket-user] Which application in SessionFactory?

[Anders Peterson]

Doesn't the newSession method in the ISessionFactory interface need to 
take an (the) application as an argument?


As it is now you can ONLY create ISessionFactory instances as an 
anonymous class.


/Anders
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[Wicket-user] Re: KeyValueCoding and ProperyModel

[Anders Peterson]

Martijn Dashorst wrote:


Anders,

Don't get me wrong, I don't mean to be harsh, but I think you don't 
'grok' the Wicket way, given your comments below. I try to give the 
'wicket mindset', and it is only my opinion, perhaps other community 
members feel differently. And I'm handicapted: I'm dutch ;-)


I really want to like Wicket - honestly - but I'm struggling. Also; I 
fully realize that some (most) of my problems are because I'm a beginner 
- not necessarily because there is something wrong with Wicket.



Anders Peterson wrote:

I don't know too much about the internals of Wicket, but I have 
opinions  on how things should work. ;-)


1) Fail gracefully: I had problems with a Panel/Form today. I got a 
(Runtime) Exception as soon as it was rendered (which I couldn't 
prevent). I actually wanted to show an empty form - it would 
illustrate to the user that soon he/she would be able to modify some 
data. Sure, I could get this working almost the way I wanted, but not 
without some coding. That brings me to my second point.


Failing gracefully is against the principles of framework building: if 
something isn't right, then you have to let the framework user know that 
it is so. Wicket can't decide (randomly) that something is good or 
isn't. How could Wicket handle a textfield attached to a span tag? We 
should detect that and not let the application go gracefully into oblivion.


Well... sometimes you have to, and definitely should, fail. Having 
components (a form) bound to a model that is not yet initialized is not 
one of those cases.


Empty form: supply an emty business object. Not to hard IMO? If it is 
null, what should Wicket do? How can we even begin to validate the 
request? How should we allocate memory?


If you submit a form with an uninitialized model THEN you should fail.

2) Supply default implementations that work: Wicket developers need to 
do far too much subclassing. We shouldn't have to subclass Form, 
Button... simply to get something working!


Because when you build an application you need to provide wicket with 
what you want it to do? How else should we know what to perform in an 
submit?


Have forms/buttons call a method like performActionNamed(...) in the 
form's parent.


Actually; why do we have to explicitly instantiate anything? Why not 
do this in the html file:


form wicket:id=form01 wicket:typeForm wicket:action=doSomething 
... 


I agree (change my mind about). Having as much as possible done in the 
Java code is a good thing.


With Wicket I feel I'm building the GUI twice - I have to create a 
hierarchy of componenets that exactly matches the (structure of the) 
corresponding html file.


Wicket can't know what you want, Wicket is not psychic. Creating the 
hierarchy of components and attaching them to the markup is the least of 
my worries when building a Wicket application. Creating the business 
logic usually is.


As a beginner I find it time consuming to assure that the component 
hierarchy matches the html structure. I don't see why the WepPage can't 
have a flat view of the html page. Components are bound by name anyway.


The markup can be created by someone else. At least in our company, 
someone makes the markup, and we (the developers) attach components to 
it in the Java. The designer doesn't need to know Java, JSP or any 
scripting language (perhaps JavaScript) to be useful in our 
applications. It is a clear separation of concerns which makes Wicket 
stand out in the framework arena.


That sounds like an argument for not having to match java-hierarchy with 
 html-structure!


And even if you feel you have to build the GUI twice, this is still far 
less than with JSF or Tapestry ;-) (I hear a boxing bell *DING*).


I just feel that you want a framework where you say:
  new MyBusinessApplication().do();

and have a complete application working with 1 line of code. That is not 
going to happen with any framework any time soon, even though we have 
great plans with Wicket. :-D


I have 5 years experience building complex web based applications using 
WebObjects.


http://www.apple.com/webobjects/

Have a look at it - it's free - you may learn something. ;-)

Why am I using Wicket: I'm unhappy with how Apple 
manages/markets/licenses WebObjects, and after 5 years I thought I'd try 
something new.


/Anders



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[Wicket-user] Re: visible == redered

[Anders Peterson]

Isn't that strict checking something that should be done when compiling 
(someone has the time to code a wicket builder for eclipse) and not at 
runtime?


At runtime I'd like the ability to disable components that are not in a 
working state because they are currently not used/displayed.


As Gili said: Wicket is wasting resources rendering stuff that will not 
be displayed.


/Anders

Juergen Donnerstag wrote:

we could do, it seems not to be a large change, but ...
Currently users (designers and developers) can be sure that wicket
throws an exception if there not a 1:1 mapping between all wicket tag
(wicket:id and wicket:) defined and components added. No suprises at
runtime at all. This check can be disabled by appSettings.setXX, but
than it is the users choice.
If we decide to change it, there no such guarantee anymore, as it
depends on the components visibility as well. E.g. provided your test
users or automated tests don't cover a specific use case where a
component's visibility is enabled, than all by a sudden, end user will
get an exception. I personally like the strictness as it avoid errors,
but I understand your use case. Any suggestion on how we can achieve
both? Shall we introduce a new booelan value for apps setting? How
shall we name it?

Juergen


On 8/23/05, Johan Compagner [EMAIL PROTECTED] wrote:


ehmm it does get renderd.. Only the output doesn't get streamed (all
rendering goes to a null output)

I think we do that so that the markup advances correctly (the current
pointer)
We should be able to skip a markup and set the markup stream correctly
after the component that was not visible

But that is more a juergen kind of thing...

johan


Eelco Hillenius wrote:


Yep. Also, I should do any model updates when it is part of a form,
and it should not be reachable as a listener too, though I think that
still is an open issue.

Eelco

On 8/23/05, Anders Peterson [EMAIL PROTECTED] wrote:



Hi,

If I set a component to not visible setVisible(false) then that
component and any/all children should not get rendered - right?

Just like confirmation before I submit a bug report.

/Anders
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[Wicket-user] Re: visible == redered

[Anders Peterson]

Juergen Donnerstag wrote:

I did the changes necessary to not render invisible component and it
passes all existing unit tests. Any more suggestions (votes) on this
topic?

Juergen


I'm happy!

/Anders
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[Wicket-user] Re: Pattern to update reusable panels

[Anders Peterson]

Thanks for answering!

This is the route I've taken, but when/where/how do I create the models?

Should I create the model in the initModel method - I trust it is not 
called as long as the component is invisible.


Is replacing a model's object a normal thing to do?

/Anders

Juergen Donnerstag wrote:

You could use setVisible(true/false). Create your markup and panel
class with all the different data, assign a wicket:id to all tags to
be either visible or not and control visibility by your java code.

Juergen

On 8/23/05, Anders Peterson [EMAIL PROTECTED] wrote:


Here's a more specific case...

A page conatins a panel. That panel should display different data
depending on what the user does/selects in the main page, and initially
there is nothing to display.

How is something like this intended to be done? Is there an example of this?

/Anders

Anders Peterson wrote:


Hi,

How do I update reusable panels that make up part of a page?

Do I get a hold on the appropriate models and call setObject?

Ideally (sub) components should know how to update themselves, but then
it needs a binding/reference to some external (parent) object. How is
this supposed to be done, or what's a good pattern to follow?

/Anders


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[Wicket-user] Re: Pattern to update reusable panels

[Anders Peterson]

I think it should be possible to create *PropertyModels with a null 
model argument - it would make things a lot easier.


Getting the various properties should return null if the model is null, 
and corresponding labels, textfields or whatever are left empty.


/Anders

Anders Peterson wrote:

Thanks for answering!

This is the route I've taken, but when/where/how do I create the models?

Should I create the model in the initModel method - I trust it is not 
called as long as the component is invisible.


Is replacing a model's object a normal thing to do?

/Anders

Juergen Donnerstag wrote:


You could use setVisible(true/false). Create your markup and panel
class with all the different data, assign a wicket:id to all tags to
be either visible or not and control visibility by your java code.

Juergen

On 8/23/05, Anders Peterson [EMAIL PROTECTED] wrote:


Here's a more specific case...

A page conatins a panel. That panel should display different data
depending on what the user does/selects in the main page, and initially
there is nothing to display.

How is something like this intended to be done? Is there an example 
of this?


/Anders

Anders Peterson wrote:


Hi,

How do I update reusable panels that make up part of a page?

Do I get a hold on the appropriate models and call setObject?

Ideally (sub) components should know how to update themselves, but then
it needs a binding/reference to some external (parent) object. How is
this supposed to be done, or what's a good pattern to follow?

/Anders



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[Wicket-user] Re: Pattern to update reusable panels

[Anders Peterson]

Juergen Donnerstag wrote:


I'm not very fond of replacing the model object, but I guess sometimes
it is the only or the better choice.


What do you normally do? Having a panel that, in the same page, should 
display different things depending on what the user does must be a 
common design pattern.


I do not know your application,

but I guess I would go for a single model which contains all form
component, whether set visible or not. And on submit propagate the
information into proper businsess object if applicable. But of course
that is only a suggestion and there are possible more approaches to
it.


Why not have the business object itself in the CompoundPropertyModel?

/Anders


On 8/23/05, Anders Peterson [EMAIL PROTECTED] wrote:


Thanks for answering!

This is the route I've taken, but when/where/how do I create the models?

Should I create the model in the initModel method - I trust it is not
called as long as the component is invisible.

Is replacing a model's object a normal thing to do?

/Anders

Juergen Donnerstag wrote:


You could use setVisible(true/false). Create your markup and panel
class with all the different data, assign a wicket:id to all tags to
be either visible or not and control visibility by your java code.

Juergen

On 8/23/05, Anders Peterson [EMAIL PROTECTED] wrote:



Here's a more specific case...

A page conatins a panel. That panel should display different data
depending on what the user does/selects in the main page, and initially
there is nothing to display.

How is something like this intended to be done? Is there an example of this?

/Anders

Anders Peterson wrote:



Hi,

How do I update reusable panels that make up part of a page?

Do I get a hold on the appropriate models and call setObject?

Ideally (sub) components should know how to update themselves, but then
it needs a binding/reference to some external (parent) object. How is
this supposed to be done, or what's a good pattern to follow?

/Anders


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[Wicket-user] Re: Pattern to update reusable panels

[Anders Peterson]

Juergen Donnerstag wrote:


What do you normally do? Having a panel that, in the same page, should
display different things depending on what the user does must be a
common design pattern.




create different panels and enable/disable them.


Say you have a list of Client objects displayed in one part of your 
page. Beside that list there is an Edit Client panel (preferably 
always visible). When the user selects a client from the list the edit 
panel should get populated with the corresponding details. The user can 
then edit the client data, save the changes and select a different client.


Surely you would do this with one panel?

Currently I have the Form inside the Edit Client panel set to not 
visible until have set the model object (and actually created the 
correct model) but I still get this error:


The form is still being rendered!

wicket.WicketRuntimeException: OGNL Exception: expression='code'; 
path='1:edit:form:code'
	at 
wicket.model.AbstractPropertyModel.onGetObject(AbstractPropertyModel.java:150)
	at 
wicket.model.AbstractDetachableModel.getObject(AbstractDetachableModel.java:100)

at wicket.Component.getModelObjectAsString(Component.java:666)
	at 
wicket.markup.html.form.FormComponent.getModelValue(FormComponent.java:317)

at 
wicket.markup.html.form.FormComponent.getValue(FormComponent.java:202)
at wicket.markup.html.form.TextField.onComponentTag(TextField.java:94)
at wicket.Component.renderComponent(Component.java:1782)
	at 
wicket.markup.html.WebMarkupContainer.onRender(WebMarkupContainer.java:78)

at wicket.Component.render(Component.java:1119)
at wicket.MarkupContainer.renderNext(MarkupContainer.java:1106)
at 
wicket.MarkupContainer.renderComponentTagBody(MarkupContainer.java:781)
at wicket.MarkupContainer.onComponentTagBody(MarkupContainer.java:723)
at wicket.Component.renderComponent(Component.java:1805)
	at 
wicket.markup.html.WebMarkupContainer.onRender(WebMarkupContainer.java:78)

at wicket.markup.html.form.Form.onRender(Form.java:482)
at wicket.Component.render(Component.java:1119)



I do not know your application,


but I guess I would go for a single model which contains all form
component, whether set visible or not. And on submit propagate the
information into proper businsess object if applicable. But of course
that is only a suggestion and there are possible more approaches to
it.


Why not have the business object itself in the CompoundPropertyModel?




CompoundPropertyModel is fine and meets many requirements, but
sometimes one of the other model is the better choice. There no single
this cover 100% of all requirements.

Juergen


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[Wicket-user] visible == redered

[Anders Peterson]

Hi,

If I set a component to not visible setVisible(false) then that 
component and any/all children should not get rendered - right?


Just like confirmation before I submit a bug report.

/Anders
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[Wicket-user] KeyValueCoding and ProperyModel

[Anders Peterson]

Hi,

I have a background doing WebObjects (WO) programming.

http://developer.apple.com/webobjects/

WO contains an interface NSKeyValueCoding and a class NSDictionary that 
is essentially a Map that implements NSKeyValueCoding.


http://developer.apple.com/documentation/WebObjects/Reference/API/com/webobjects/foundation/NSKeyValueCoding.html
http://developer.apple.com/documentation/WebObjects/Reference/API/com/webobjects/foundation/NSDictionary.html

This is EXTREMELY USEFUL! You use it for any kind of custom data 
collection.


I think something like this should work fine in conjunction with 
*ProperyModel.


/Anders
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[Wicket-user] Re: KeyValueCoding and ProperyModel

[Anders Peterson]

In case it wasn't clear...

An NSDictionary instance will accept *any* ognl expression.

/Anders
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Anders Peterson wrote:

Hi,

I have a background doing WebObjects (WO) programming.

http://developer.apple.com/webobjects/

WO contains an interface NSKeyValueCoding and a class NSDictionary that 
is essentially a Map that implements NSKeyValueCoding.


http://developer.apple.com/documentation/WebObjects/Reference/API/com/webobjects/foundation/NSKeyValueCoding.html 

http://developer.apple.com/documentation/WebObjects/Reference/API/com/webobjects/foundation/NSDictionary.html 



This is EXTREMELY USEFUL! You use it for any kind of custom data 
collection.


I think something like this should work fine in conjunction with 
*ProperyModel.


/Anders




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[Wicket-user] Re: KeyValueCoding and ProperyModel

[Anders Peterson]

Hi, it's me agian...

I just discovered that this works perfectly fine:

Map tmpMap = new HashMap();
Ognl.setValue(testValue, tmpMap, new Integer(1));

Then couldn't CompoundProtertyModel have a Map as a default object (if 
allowing null objects is a problem)?


/Anders

Anders Peterson wrote:

In case it wasn't clear...

An NSDictionary instance will accept *any* ognl expression.

/Anders



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[Wicket-user] Re: visible == redered

[Anders Peterson]

In my case rendering fails - throwing an excpetion - and does not allow 
me to continue.


It seems now that the only way I can get this to work is to insert some 
sort of dummy object. This is really not what I was hoping for.


Why can't wicket allow models with null objects?

/Anders

Johan Compagner wrote:
ehmm it does get renderd.. Only the output doesn't get streamed (all 
rendering goes to a null output)


I think we do that so that the markup advances correctly (the current 
pointer)
We should be able to skip a markup and set the markup stream correctly 
after the component that was not visible


But that is more a juergen kind of thing...

johan


Eelco Hillenius wrote:


Yep. Also, I should do any model updates when it is part of a form,
and it should not be reachable as a listener too, though I think that
still is an open issue.

Eelco

On 8/23/05, Anders Peterson [EMAIL PROTECTED] wrote:
 


Hi,

If I set a component to not visible setVisible(false) then that 
component and any/all children should not get rendered - right?


Just like confirmation before I submit a bug report.

/Anders
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[Wicket-user] Re: KeyValueCoding and ProperyModel

[Anders Peterson]

Igor Vaynberg wrote:


Cant you just do new CompoundPropertyModel(new HashMap()) ?


Yes


Also check out the wicket.util.value.ValueMap helper class.


StringValue seems useful!

/Anders


-Original Message-
From: [EMAIL PROTECTED] 
[mailto:[EMAIL PROTECTED] On Behalf Of 
Anders Peterson

Sent: Tuesday, August 23, 2005 10:48 AM
To: wicket-user@lists.sourceforge.net
Subject: [Wicket-user] Re: KeyValueCoding and ProperyModel

Hi, it's me agian...

I just discovered that this works perfectly fine:

Map tmpMap = new HashMap();
Ognl.setValue(testValue, tmpMap, new Integer(1));

Then couldn't CompoundProtertyModel have a Map as a default 
object (if allowing null objects is a problem)?


/Anders

Anders Peterson wrote:


In case it wasn't clear...

An NSDictionary instance will accept *any* ognl expression.

/Anders



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[Wicket-user] Re: KeyValueCoding and ProperyModel

[Anders Peterson]

I don't know too much about the internals of Wicket, but I have opinions 
 on how things should work. ;-)


1) Fail gracefully: I had problems with a Panel/Form today. I got a 
(Runtime) Exception as soon as it was rendered (which I couldn't 
prevent). I actually wanted to show an empty form - it would illustrate 
to the user that soon he/she would be able to modify some data. Sure, I 
could get this working almost the way I wanted, but not without some 
coding. That brings me to my second point.


2) Supply default implementations that work: Wicket developers need to 
do far too much subclassing. We shouldn't have to subclass Form, 
Button... simply to get something working!


Actually; why do we have to explicitly instantiate anything? Why not do 
this in the html file:


form wicket:id=form01 wicket:typeForm wicket:action=doSomething ... 

With Wicket I feel I'm building the GUI twice - I have to create a 
hierarchy of componenets that exactly matches the (structure of the) 
corresponding html file.


/Anders

Eelco Hillenius wrote:

I actually agree we should allow nulls. We have had discussions about
this in the past, but I'm definitively in the camp that wants to
either fail right away if a value (null) is not allowed, or be
flexible about what we support.

Eelco

On 8/23/05, Anders Peterson [EMAIL PROTECTED] wrote:


Igor Vaynberg wrote:



Cant you just do new CompoundPropertyModel(new HashMap()) ?


Yes



Also check out the wicket.util.value.ValueMap helper class.


StringValue seems useful!

/Anders



-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of
Anders Peterson
Sent: Tuesday, August 23, 2005 10:48 AM
To: wicket-user@lists.sourceforge.net
Subject: [Wicket-user] Re: KeyValueCoding and ProperyModel

Hi, it's me agian...

I just discovered that this works perfectly fine:

Map tmpMap = new HashMap();
Ognl.setValue(testValue, tmpMap, new Integer(1));

Then couldn't CompoundProtertyModel have a Map as a default
object (if allowing null objects is a problem)?

/Anders

Anders Peterson wrote:



In case it wasn't clear...

An NSDictionary instance will accept *any* ognl expression.

/Anders



--
http://ojalgo.org/

Mathematics, Linear Algebra and Optimisation with Java



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[Wicket-user] Pattern to update reusable panels

[Anders Peterson]

Hi,

How do I update reusable panels that make up part of a page?

Do I get a hold on the appropriate models and call setObject?

Ideally (sub) components should know how to update themselves, but then 
it needs a binding/reference to some external (parent) object. How is 
this supposed to be done, or what's a good pattern to follow?


/Anders
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[Wicket-user] Re: Updating multiple database records with one form submit

[Anders Peterson]

Thanks very much for trying to help,

I have it working now, but I'm not happy with the code - it's not correct.

It's the small, obvious, things that are difficult for beginners.

I had this:

new Model(tmpBrand.getName(), name)

which of course did not work. Changing to this:

new PropertyModel(tmpBrand, name)

made things work a lot better. ;-)


Now to the part I still don't understand. The only models I explicitly 
create are the ones I need to populate the rows in the ListView. The 
Form itself does not have a Model (that I created) and I feel it should.


How would you use a CompoundPropertyModel (with the form) when it 
contains a ListView?


/Anders
--
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Java Algorithms for Mathematics, Linear Algebra and Optimisation

Phil Kulak wrote:

If you used a PropertyModel or CompoundPropertyModel, then that's all
you have to do. When the form is submitted, the properties will be
updated if the form passes validation.

On 8/16/05, Anders Peterson [EMAIL PROTECTED] wrote:


Beginner here!

Stuck on a problem:

1) I get all (4) records from a table in the database.
2) Using a Form and a ListView I display all records simultaneously each
with its own TextField
3) I press the submit button after having changed any or all of the
items in the form/list.

How do I get these objects to be updated correctly?

What kind of model should I feed the form, and what object should I feed
that model?



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Re: [Pride-users] Re: [Wicket-user] Re: Tools and frameworks

[Anders Peterson]

Eelco Hillenius wrote:
You can't specify VM arguments in your web.xml file. You can use web.xml 
parameters in your Wicket application object (override method init). You 
should note however that VM arguments are in the scope of the whole VM 
that can have mutliple (conflicting?) webapplications. So, you probably 
want to avoid depending on VM in production systems unless you are 
really sure you 'own' the server.


Ok.

The class/method that reads the properties doesn't access 
System.getProperty(aProp) directly. Instead it takes an argument of 
type Properties. So, there is no problem.


Having multiple databases, for one app, is not a problem either.

http://pride.sourceforge.net/PriDE-Introduction.html#AccessingMultipleDatabases

/Anders
--
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Java Algorithms for Mathematics, Linear Algebra and Optimisation


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[Wicket-user] Re: Tools and frameworks

[Anders Peterson]

I had a look a WTP and learned that WTP = WST + JST, and that WST was 
the interesting part. I've noticed that several other, to me, 
interesting projects are building their plug-ins on WST.


... but I couldn't get it working - couldn't use any editors. So I 
dumped it. Instead I'm using EclipseHTMLEditor. It works well, and it 
has no dependencies on other plug-ins. WST had a lot of dependencies. 
Too many for my taste. (Didn't take me very long to decide I wanted to 
get rid of it.)


Tomcat/Jetty: I tried Tomcat and the Sysdeo plug-in first. Eventually I 
got everything to work, but wasn't happy about Sysdeo's handling of 
classpaths. Tried Jetty and Jetty Launcher as well. It works much 
better!!! ...and yes, Jetty starts significantly faster that Tomcat.


I've decided to use PriDE instead of Hibernate (with annotations). 
They're very different. ;-)


http://pride.sourceforge.net/

There's also an eclipse plug-in for working with PriDE. I have little 
experience with PriDE, but so far I'm very happy with it. It has no (as 
in zero) dependencies.


/Anders

Anders Peterson wrote:

Thanks for answering,

I'm assuming you mean The Eclipse Web Tools Platform (WTP) project. 
I'll have a look at that!


Why Jetty over Tomcat? I've never used either, but have the feeling more 
people use Tomcat and saw a performance comparison recently where Tomcat 
did very well.


Spring: Everyone does seem to love it, but I don't know what problem I 
have that it'll solve.


/Anders

Martijn Dashorst wrote:


Most usefull in the specific webapp department:
- jetty launcher
- jetty
- webtools (webstandard tools - xml/html editor, I don't use the 
appserver integration stuff)


usefull without webapp development:
- spring (I'm still not convinced, but the rest of the world is ;-)
- hibernate
- maven
- ant
- junit

But those are basically a need for all projects, not specific for 
wicket development.


Martijn

Anders Peterson wrote:


Hi all,

I’m just about to start work on my first Wicket application.

What other tools and frameworks do you use with Wicket?

I use eclipse so I’d be particularly interested in recommendations on 
eclipse plug-ins. As far as I know there is no Wicket-specific 
plug-in, but I’m sure there are others that could be useful with a 
Wicket project


Thanks,
/Anders



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[Wicket-user] Re: Quickstart Examples

[Anders Peterson]

Must have been imagining...

One of the factors that made me give Wicket a try was the fact that I 
could download a quickstart project, and it just worked.


I think it would be great to have a guide that would show potential 
users how they can, with a few simple modifications, add to or change 
the apps behaviour and presentation.


/Anders

Anders Peterson wrote:

Hi,

I have the quickstart and examples projects up and running.

When I downloaded them (a few days ago) I believe I saw some 
instructions on how to start modifying the apps to learn wicket 
features. Now I can't find these instructions, and begin to doubt I 
really did see them. Do they exist?


/Anders



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[Wicket-user] Quickstart Examples

[Anders Peterson]

Hi,

I have the quickstart and examples projects up and running.

When I downloaded them (a few days ago) I believe I saw some 
instructions on how to start modifying the apps to learn wicket 
features. Now I can't find these instructions, and begin to doubt I 
really did see them. Do they exist?


/Anders



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[Wicket-user] Tolls and frameworks

[Anders Peterson]

Hi all,

I’m just about to start work on my first Wicket application.

What other tools and frameworks do you use with Wicket?

I use eclipse so I’d be particularly interested in recommendations on 
eclipse plug-ins. As far as I know there is no Wicket-specific plug-in, 
but I’m sure there are others that could be useful with a Wicket project


Thanks,
/Anders



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[Wicket-user] Re: Tools and frameworks

[Anders Peterson]

Thanks for answering,

I'm assuming you mean The Eclipse Web Tools Platform (WTP) project. 
I'll have a look at that!


Why Jetty over Tomcat? I've never used either, but have the feeling more 
people use Tomcat and saw a performance comparison recently where Tomcat 
did very well.


Spring: Everyone does seem to love it, but I don't know what problem I 
have that it'll solve.


/Anders

Martijn Dashorst wrote:

Most usefull in the specific webapp department:
- jetty launcher
- jetty
- webtools (webstandard tools - xml/html editor, I don't use the 
appserver integration stuff)


usefull without webapp development:
- spring (I'm still not convinced, but the rest of the world is ;-)
- hibernate
- maven
- ant
- junit

But those are basically a need for all projects, not specific for wicket 
development.


Martijn

Anders Peterson wrote:


Hi all,

I’m just about to start work on my first Wicket application.

What other tools and frameworks do you use with Wicket?

I use eclipse so I’d be particularly interested in recommendations on 
eclipse plug-ins. As far as I know there is no Wicket-specific 
plug-in, but I’m sure there are others that could be useful with a 
Wicket project


Thanks,
/Anders



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[Wicket-user] Re: Using JDK 1.5

[Anders Peterson]

I think it’s strange that a small/young project like Wicket has to wait 
for IBM before it can make use of Java 5.


BTW, Hi!

I'm considering using Wicket for my next project. The main alternative 
is Tapestry.


In conjunction with Wicket or Tapestry I’ll most likely use Hibernate, 
but there is also PriDE.


The last 5 years I’ve been using WebObjects.

/Anders

Johan Compagner wrote:

i don't think ibm can wait long before releasing a J2EE 5 websphere.
Because of the big hype thats surronds j2ee5 now.
So then they will have also a jdk 1.5 ready by that time (somewhere next 
year)

Or else ibm will linger behind all other major App servers vendors.


Jesse Sightler wrote:

I haven't followed Websphere that closely either lately, but I do 
think they still do this.  I'd be very surprised to see a JDK 1.5 
Websphere before the runtime is available for 1.5.  Having said that, 
I would not expect it to take anywhere near 5 years. :)


On 8/1/05, *Gili* [EMAIL PROTECTED] 
mailto:[EMAIL PROTECTED]  wrote:


 huh??
 Do you really think that ibm waits for there own jre (if they are
 building it) when they want to support J2EE 5 in websphere??


 J2EE 5 will heavily build in jre 5 features and j2ee will be out
early
 next year. So that will be the big push for all Application
Server vendors
 to fully support the 1.5 vm. We just have to wait a bit more.

 johan

Actually, yes this is what I was implying. I haven't
followed Websphere
in a while, but last time I looked IBM absolutely *did* wait for
their
own JDK before supporting newer features. In fact, this is part of
their
marketing strategy as they would always bundle Websphere with
their JREs
in order to get more people to use it.

Has this changed over the past few years?

Gili


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