EL in Input taglib
Hello! I have a question. Why expression language don't used in Input taglib? - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
JSTL
Hi all, Recently started using the standard taglib - great stuff! I have a couple of questions about it: 1) There doesn't seem to be a varStatus attribute for the x:forEach tag like there is for the c:forEach tag. For the time being, I implemented one using c:set etc. (so I can have even/odd table row styles for a table being built from xml data), but it seems like there should be one. Will this be added in a future version? 2) Does anyone know if the Appendix PDF file (from the link on the java.sun.com jstl page) is redistributable (no licensing issues)? 3) There are no WAR files in the 1.02 release (?), or did I download the wrong .zip? Thanks, JC __ Do you Yahoo!? Yahoo! Shopping - Send Flowers for Valentine's Day http://shopping.yahoo.com - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: JSTL
On Tue, 18 Feb 2003, Jeff Corliss wrote: 1) There doesn't seem to be a varStatus attribute for the x:forEach tag like there is for the c:forEach tag. For the time being, I implemented one using c:set etc. (so I can have even/odd table row styles for a table being built from xml data), but it seems like there should be one. Will this be added in a future version? I believe it's in the pipeline of suggestions; there's probably no good reason not to add it. To record your specific need, you can mail [EMAIL PROTECTED] 2) Does anyone know if the Appendix PDF file (from the link on the java.sun.com jstl page) is redistributable (no licensing issues)? My publisher technically owns the copyright until the contract expires, but as it's author, I'm willing to go on record that there are no problems with redistributing it. 3) There are no WAR files in the 1.02 release (?), or did I download the wrong .zip? The version of 1.0.2 currently available from the download site has this problem; I vaguely remember fixing it long ago, but the oversight might still remain. Anyway, release 1.0.3 will be out soon; I had planned on releasing it this weekend but got sidetracked by a number of other things -- I expect to have it posted tonight or tomorrow. -- Shawn Bayern JSTL in Action http://www.manning.com/bayern - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: EL in Input taglib
The input taglib was developed before there was the Standard taglib and the EL. Over time, those taglibs here which are not superceded by the Standard taglib may have support for the EL added. Glenn Igor Kozlov wrote: Hello! I have a question. Why expression language don't used in Input taglib? - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] -- -- Glenn Nielsen [EMAIL PROTECTED] | /* Spelin donut madder| MOREnet System Programming | * if iz ina coment. | Missouri Research and Education Network | */ | -- - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: JSTL
Thanks so much for the prompt reply, Shawn! JC __ Do you Yahoo!? Yahoo! Shopping - Send Flowers for Valentine's Day http://shopping.yahoo.com - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Tag List
So far the best explanation I have found of MVC aka Model-2 is on
Sun's site:
http://developer.java.sun.com/developer/onlineTraining/JSPIntro/contents
.html#JSPIntro4
Sun calls the pattern Model-2, but there is enough similarity to the
Smalltalk pattern that the term MVC has been (arguably
mis-)appropriated.
Jeff Schnitzer
[EMAIL PROTECTED]
The Maverick MVC Framework: http://mav.sourceforge.net
-Original Message-
From: Scott Taylor [mailto:[EMAIL PROTECTED]]
Sent: Sunday, February 16, 2003 7:43 AM
To: Tag Libraries Users List
Subject: Re: Tag List
Thanks I will look at Maverick. Why is Maverick and Struts considerd
MVC,
when the idea of JSP is part of MVC?
Scott
- Original Message -
From: Schnitzer, Jeff [EMAIL PROTECTED]
To: Tag Libraries Users List [EMAIL PROTECTED]
Sent: Friday, February 14, 2003 8:19 PM
Subject: RE: Tag List
Yes, if you're using JSTL then you will be a whole lot better off with
an MVC framework like Struts or Maverick. I recommend Maverick -
it's
considerably simpler than Struts, yet offers more features. Also,
unlike most other similar frameworks (Struts, WebWork, etc), Maverick
never started out with a now-crufty set of specialized set of JSP tags
-
JSTL works great.
The core distribution includes a sample application that uses JSTL.
http://mav.sourceforge.net
Jeff Schnitzer
[EMAIL PROTECTED]
(yes, I'm the lead developer of Maverick)
- Original Message -
From: Scott Taylor [EMAIL PROTECTED]
To: Tag Libraries Users List [EMAIL PROTECTED]
Sent: Friday, February 14, 2003 10:23 AM
Subject: Re: Tag List
Thanks...how about an entry form?
Also, if I want to do JSP's easier are Struts better?
I will get the book though
Thanks
Scott
- Original Message -
From: Eddie Barna [EMAIL PROTECTED]
To: Tag Libraries Users List [EMAIL PROTECTED]
Sent: Friday, February 14, 2003 6:01 PM
Subject: Re: Tag List
You can pass the value from your search form to the page which
you
have
listed in your email. For example: You have a search form with
a
text
box
titled search
Here's what the page that queries the db would look like now
sql:query var=productQuery dataSource=${productDS}
SELECT * FROM CD WHERE CDTITLE = ?
sql:param value=${param.search}/
/sql:query
You can also expand on this by using the OR statement in your
query.
For
example:
sql:query var=productQuery dataSource=${productDS}
SELECT * FROM CD WHERE CDTITLE = ? OR ARTIST = ?
sql:param value=${param.search}/
sql:param value=${param.search}/
/sql:query
For every condition in your query you must add a sql;param/
tag.
Hope this helps. I really do recomend that you get Shawn
Bayern's
book
titled JSTL in Action. It explains all this in great detail,
plus
everything else.
- Original Message -
From: Scott Taylor [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Friday, February 14, 2003 9:31 AM
Subject: Tag List
I am trying to find a list of tags to help me modify the CD
Shop
Cart
web
application from Sun One.
For example, how do I insert tags that provide a search form
(and
entry
form) rather than simply list everything.
Here is what the code looks like so far:
%@page contentType=text/html%
html
headtitleCD Catalog List/title/head
%@ taglib prefix=c uri=http://java.sun.com/jstl/core; %
%@ taglib prefix=sql uri=http://java.sun.com/jstl/sql; %
body
h1 CD Catalog List /h1
sql:setDataSource var=productDS
url=jdbc:postgresql://localhost:5432/recruitment
driver=org.postgresql.Driver
user=scott password= /
sql:query var=productQuery dataSource=${productDS}
SELECT * FROM CD
/sql:query
TABLE border=1
TR
THID/TH
THCD Title/TH
THArtist/TH
THCountry/TH
THPrice/TH
/TR
c:forEach var=row items=${productQuery.rows}
TR
TDc:out value=${row.ID}//TD
TDc:out value=${row.CDTITLE}//TD
TDc:out value=${row.ARTIST}//TD
TDc:out value=${row.COUNTRY}//TD
TDc:out value=${row.PRICE}//TD
TD
form method=get action=ShopCart.jsp
input type=hidden name=cdId value=c:out
value=${row.ID}/
input type=hidden name=cdTitle value=c:out
value=${row.CDTITLE}/
input type=hidden name=cdPrice value=c:out
value=${row.PRICE}/
input type=submit name=operation value=Add
/form
/TD
/TR
/c:forEach
/TABLE
/body
/html
Regards
Scott
-
To unsubscribe, e-mail:
[EMAIL PROTECTED]
RE: Tag List
Just as interesting historical background...
The terms model 1 and model 2 actually come from an old version of the
JSP specification that describes two models of web-application
development: the first model (model 1) sends requests directly to JSP
pages, whereas the second (model 2) sends requests to servlets, which
forward to JSP pages as necessary.
Model-View-Controller (MVC) is a design pattern that a model 2 web
application will often resemble.
Shawn
On Tue, 18 Feb 2003, Schnitzer, Jeff wrote:
So far the best explanation I have found of MVC aka Model-2 is on
Sun's site:
http://developer.java.sun.com/developer/onlineTraining/JSPIntro/contents
.html#JSPIntro4
Sun calls the pattern Model-2, but there is enough similarity to the
Smalltalk pattern that the term MVC has been (arguably
mis-)appropriated.
Jeff Schnitzer
[EMAIL PROTECTED]
The Maverick MVC Framework: http://mav.sourceforge.net
-Original Message-
From: Scott Taylor [mailto:[EMAIL PROTECTED]]
Sent: Sunday, February 16, 2003 7:43 AM
To: Tag Libraries Users List
Subject: Re: Tag List
Thanks I will look at Maverick. Why is Maverick and Struts considerd
MVC,
when the idea of JSP is part of MVC?
Scott
- Original Message -
From: Schnitzer, Jeff [EMAIL PROTECTED]
To: Tag Libraries Users List [EMAIL PROTECTED]
Sent: Friday, February 14, 2003 8:19 PM
Subject: RE: Tag List
Yes, if you're using JSTL then you will be a whole lot better off with
an MVC framework like Struts or Maverick. I recommend Maverick -
it's
considerably simpler than Struts, yet offers more features. Also,
unlike most other similar frameworks (Struts, WebWork, etc), Maverick
never started out with a now-crufty set of specialized set of JSP tags
-
JSTL works great.
The core distribution includes a sample application that uses JSTL.
http://mav.sourceforge.net
Jeff Schnitzer
[EMAIL PROTECTED]
(yes, I'm the lead developer of Maverick)
- Original Message -
From: Scott Taylor [EMAIL PROTECTED]
To: Tag Libraries Users List [EMAIL PROTECTED]
Sent: Friday, February 14, 2003 10:23 AM
Subject: Re: Tag List
Thanks...how about an entry form?
Also, if I want to do JSP's easier are Struts better?
I will get the book though
Thanks
Scott
- Original Message -
From: Eddie Barna [EMAIL PROTECTED]
To: Tag Libraries Users List [EMAIL PROTECTED]
Sent: Friday, February 14, 2003 6:01 PM
Subject: Re: Tag List
You can pass the value from your search form to the page which
you
have
listed in your email. For example: You have a search form with
a
text
box
titled search
Here's what the page that queries the db would look like now
sql:query var=productQuery dataSource=${productDS}
SELECT * FROM CD WHERE CDTITLE = ?
sql:param value=${param.search}/
/sql:query
You can also expand on this by using the OR statement in your
query.
For
example:
sql:query var=productQuery dataSource=${productDS}
SELECT * FROM CD WHERE CDTITLE = ? OR ARTIST = ?
sql:param value=${param.search}/
sql:param value=${param.search}/
/sql:query
For every condition in your query you must add a sql;param/
tag.
Hope this helps. I really do recomend that you get Shawn
Bayern's
book
titled JSTL in Action. It explains all this in great detail,
plus
everything else.
- Original Message -
From: Scott Taylor [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Friday, February 14, 2003 9:31 AM
Subject: Tag List
I am trying to find a list of tags to help me modify the CD
Shop
Cart
web
application from Sun One.
For example, how do I insert tags that provide a search form
(and
entry
form) rather than simply list everything.
Here is what the code looks like so far:
%@page contentType=text/html%
html
headtitleCD Catalog List/title/head
%@ taglib prefix=c uri=http://java.sun.com/jstl/core; %
%@ taglib prefix=sql uri=http://java.sun.com/jstl/sql; %
body
h1 CD Catalog List /h1
sql:setDataSource var=productDS
url=jdbc:postgresql://localhost:5432/recruitment
driver=org.postgresql.Driver
user=scott password= /
sql:query var=productQuery dataSource=${productDS}
SELECT * FROM CD
/sql:query
TABLE border=1
TR
THID/TH
THCD Title/TH
THArtist/TH
THCountry/TH
THPrice/TH
/TR
c:forEach var=row items=${productQuery.rows}
TR
TDc:out value=${row.ID}//TD
TDc:out value=${row.CDTITLE}//TD
TDc:out value=${row.ARTIST}//TD
RE: Tag List
From: Mark R. Diggory [mailto:[EMAIL PROTECTED]] Is this kinda what you mean? Are you trying to add the search/edit/remove/add functionality to the jsp page? This could easily be captured with forms which submit back to the jsp plus a choose block to designate which operation is being performed. I bet this'll really irk those Struts/Maveric MVC folks out there with its use of the JSP page as both the Controller and View. But it is relatively easy to accomplish using JSTL without such heavy MVC frameworks. Here is the example: [...] If you plan on using JSTL as a programming language, you're going to run out of rope rather quickly. Yeah, the basic constructs are there - assignment, iteration, conditionals - but Java it is not. What about file access, or image manipulation, or remote procedure calls, or any of the 50 million other things people do in their business logic? After you write custom tags for all of that what you end up with is an ugly, untyped, interpreted programming language. IMHO, in any nontrivial web application, JSTL is best treated as a templating language. Aside from that, the main problem with pages that submit back to themselves is that they confuse the hell out of designers. My designers would be bewildered by all that business logic, whether it be in tags or scriptlets. If you want to encapsulate the functions for adding/removing/editing the content and not have them in this View/Controller, you could include them from separate JSP's or Servlets. or likewise submit the forms directly to those JSP's or Servlets and then redirect back to this jsp once the work was done. ...at which point what you have is a lightweight MVC framework. In fact, this is pretty much exactly what Maverick does. It's what Struts does too, except that Struts does it with 100 times more code... It stays pretty independent and light without too much dependency on any particular framework other than the JSP/JSTL tags. Which results in less research and development effort to accomplish the same task. All you need to know is JSP/JSTL. Any webapp of a more than trivial nature ends up with a significant amount of framework; it's just a question of whether you use existing software or craft your own. That said, I believe frameworks should be minimalist, modular, and focused on a narrow goal - which is why my fellow developers and I gave up on Struts, WebWork, etc and wrote Maverick. Jeff Schnitzer [EMAIL PROTECTED] The Maverick MVC Framework: http://mav.sourceforge.net - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Tag List
Just to be clear, I was responding to a user with an interest in convering the demo example in the Webservices tutorial into JSLT. A very specific and small application. We're on the Taglibs listserv. I saw several people tell him to use heavier frameworks external to this project. I just wanted to provide him with answer he asked for and could easily do in one JSP page with JSTL. *** That said, I agree with you on many points. I have no problem with MVC itself, I'll look over maverick more to see if I feel the same way about it that I do about Struts. I primarily struggle with the whole issue of having too much configuration mapping going on. 1.) I have this great Tomcat JSP Servlet Container that works quite elegantly. Like an http server, you know what url's are going to lead to your JSP's simply by thier location on the filesystem. Quite nice, easy to use. You've got the Context,Session,Request,Response objects to store things in when you need to. Its easy to get used to. And you got custom tags to push your model back behind the presentation. 2.) Then you have frameworks like struts that introduce another level of configuration into the picture. You end up with web.xml and struts config.xml files in your web application. You end up tracing through them trying to setup all this stuff. What if you want to use Cocoon too, now you've got a whole other config to deal with on top of your current config. ouch... A whole other realm of complexity. This is all too much for a small application. Schnitzer, Jeff wrote: Aside from that, the main problem with pages that submit back to themselves is that they confuse the hell out of designers. My designers would be bewildered by all that business logic, whether it be in tags or scriptlets. Granted that is a pro for the use of a framework that breaks the presentation off of the model. I would never suggest that is not a benifit when you have designers to contend with. Or larger applications to work with. ...at which point what you have is a lightweight MVC framework. In fact, this is pretty much exactly what Maverick does. It's what Struts does too, except that Struts does it with 100 times more code... Yes, and mine does it simply by using a JSP as Controller instead of a bunch of servlets and a config file. A simple solution for his request. Any webapp of a more than trivial nature ends up with a significant amount of framework; it's just a question of whether you use existing software or craft your own. That said, I believe frameworks should be minimalist, modular, and focused on a narrow goal - which is why my fellow developers and I gave up on Struts, WebWork, etc and wrote Maverick. True... Cheers :-) Mark - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Usage of JSTL with a custom tag
The following tags:
c:set var=ccmm:myAttribute attribute=country//c:set
fmt:message key=countryCode.${cc} /
And
fmt:messagecountryCode.mm:myAttribute attribute=country//fmt:message
yield the same output. Which one is better?
Vernon
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