[Wicket-user] beginner: InspectorBug question
I ran into this cool InspectBug panel. I had a very basic question though.
I have a IDataProvider that returns a LoadableDetachableModel from its
public IModel model(final Object object){
return new LoadableDetachableModel(){
protected Object load(){
return object;
}
};
I have a model object com.learnwicket.shop.model.Book that is actually
being returned from model( ). The DataProvider supplies data to the
DataView.
The InspectBug page displays an entry :
size - 8.7k
type - wicket.extensions.markup.html.repeater.refreshing.Item
Model Object - [EMAIL PROTECTED]
I understand that while a request is being served,
wicket.extensions.markup.html.repeater.refreshing.Item 's model is the
Book object. Since am returning LoadableDetachableModel , I guess at
the end of each request, the actual Model obj reference - Book, is
reset to null.
Does 8.7k include my Book object size as well? and the size is likely
to reduce at the end of the request cycle but is not reflected in the
InspectorBug page?
hope this is not a stupid question :)
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RE: [Wicket-user] RowSets
In my browser Ive tried irc.freenode.net and www.irc.freenode.net and http://irc.freenode.net and all I get are 404 PAGE NOT FOUND messages. What exactly do you mean by irc.freenode.net? -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Igor Vaynberg To: wicket-user@lists.sourceforge.net btw if you have a lot of small questions we might be able to better help you at irc.freenode.net ##wicket
Re: [Wicket-user] RowSets
Using an IRC client to connect to irc.freenode.net and then /join ##wicket. Frank Silbermann wrote: In my browser I’ve tried “irc.freenode.net” and www.irc.freenode.net http://www.ifr.freenode.net/ and http://irc.freenode.net http://irc.freenode.net/ and all I get are 404 PAGE NOT FOUND messages. What exactly do you mean by irc.freenode.net? -Original Message- *From:* [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] *On Behalf Of *Igor Vaynberg *To**:* wicket-user@lists.sourceforge.net btw if you have a lot of small questions we might be able to better help you at irc.freenode.net http://irc.freenode.net ##wicket --- This SF.net email is sponsored by: Splunk Inc. Do you grep through log files for problems? Stop! Download the new AJAX search engine that makes searching your log files as easy as surfing the web. DOWNLOAD SPLUNK! http://sel.as-us.falkag.net/sel?cmd=lnkkid3432bid#0486dat1642 ___ Wicket-user mailing list Wicket-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wicket-user
[Wicket-user] Wicket Library down?
What's happened to the Wicket Library? (http://www.wicket-library.com/) It seems to be down. --- This SF.net email is sponsored by: Splunk Inc. Do you grep through log files for problems? Stop! Download the new AJAX search engine that makes searching your log files as easy as surfing the web. DOWNLOAD SPLUNK! http://sel.as-us.falkag.net/sel?cmd=lnkkid3432bid#0486dat1642 ___ Wicket-user mailing list Wicket-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wicket-user
Re: [Wicket-user] Wicket Library down?
Thanks for the info. It is up again Juergen On 1/23/06, Frank Silbermann [EMAIL PROTECTED] wrote: What's happened to the Wicket Library? (http://www.wicket-library.com/) It seems to be down. --- This SF.net email is sponsored by: Splunk Inc. Do you grep through log files for problems? Stop! Download the new AJAX search engine that makes searching your log files as easy as surfing the web. DOWNLOAD SPLUNK! http://sel.as-us.falkag.net/sel?cmdlnkkid3432bid#0486dat1642 ___ Wicket-user mailing list Wicket-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wicket-user --- This SF.net email is sponsored by: Splunk Inc. Do you grep through log files for problems? Stop! Download the new AJAX search engine that makes searching your log files as easy as surfing the web. DOWNLOAD SPLUNK! http://sel.as-us.falkag.net/sel?cmd=lnkkid3432bid#0486dat1642 ___ Wicket-user mailing list Wicket-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wicket-user
Re: [Wicket-user] RowSets
You need an IRC client for that, like ChatZilla: http://www.hacksrus.com/~ginda/chatzilla/ or Mirc: http://www.mirc.com/. See http://freenode.net/ for the web site. Eelco On 1/23/06, Frank Silbermann [EMAIL PROTECTED] wrote: In my browser I've tried irc.freenode.net and www.irc.freenode.net and http://irc.freenode.net and all I get are 404 PAGE NOT FOUND messages. What exactly do you mean by irc.freenode.net? -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Igor Vaynberg To: wicket-user@lists.sourceforge.net btw if you have a lot of small questions we might be able to better help you at irc.freenode.net ##wicket --- This SF.net email is sponsored by: Splunk Inc. Do you grep through log files for problems? Stop! Download the new AJAX search engine that makes searching your log files as easy as surfing the web. DOWNLOAD SPLUNK! http://sel.as-us.falkag.net/sel?cmd=lnkkid3432bid#0486dat1642 ___ Wicket-user mailing list Wicket-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wicket-user
Re: [Wicket-user] auto generating page files
On 1/17/06, Igor Vaynberg [EMAIL PROTECTED] wrote: this is not really feasible. the markup does not contain enough information about the component.span wicket:id=name/spandoesnt tell me what component i want to put in. is it a label? is it a panel? something else? does it have a default constructor? which constructor to use? which model? This does give me an interesting idea for IDEA thou - a set of intentions/inspections and maybe a custom auto-completion (not sure how you do that yet thou) that, in the .java file looks up wicket:id's to autocomplete component id params with, and in the .html file, auto complete wicket:id's with unused labels from added components. A set of inspection/intentions could check hirerachy as well.H - I really should get my JIRA plugin building again but this sounds like an interesting project in itself :)
Re: [Wicket-user] beginner: InspectorBug question
inspector shows the size of the page as it is /in session/. i think the problem is how you declared the model:return new LoadableDetachableModel(){protected Object load(){ return object;
}since the model is anonymous and object is final, the object will /always/ hold on to the object. its internal object variable will be cleared, but the anonymous class will still hang on to object reference.
-IgorOn 1/23/06, karthik Guru [EMAIL PROTECTED] wrote:
I ran into this cool InspectBug panel. I had a very basic question though.I have a IDataProvider that returns a LoadableDetachableModel from itspublic IModel model(final Object object){return new LoadableDetachableModel(){
protected Object load(){return object; } };I have a model object com.learnwicket.shop.model.Book that is actuallybeing returned from model( ). The DataProvider supplies data to the
DataView.The InspectBug page displays an entry :size - 8.7ktype - wicket.extensions.markup.html.repeater.refreshing.ItemModel Object - [EMAIL PROTECTED]I understand that while a request is being served,
wicket.extensions.markup.html.repeater.refreshing.Item 's model is theBook object. Since am returning LoadableDetachableModel , I guess atthe end of each request, the actual Model obj reference -Book, is
reset to null.Does 8.7k include my Book object size as well? and the size is likelyto reduce at the end of the request cycle but is not reflected in theInspectorBug page?hope this is not a stupid question :)
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[Wicket-user] ListView tutorial?
Has anyone written about the way ListView works in Wicket -- i.e. the roles played by ListView, ListItem and the models belonging to these components? I've looked at the JavaDoc in the hope of gaining some intuition as to what is going on, but I'm having a difficult time seeing the forest because of all the trees. For example, I'm looking at the Component Reference examples, specifically the RadioGroupPage. The RadioGroup object is constructed with new Model() -- which leads me to ask myself What kind of a silly model is that? Looking at the API documentation for RadioGroup, is says that the group's model is set to the model of the selected Radio component. So I'm guessing that new Model() is just a filler to tell the RadioGroup NOT to search for a ComponentModel further up the hierarchy -- this time, the model comes from down lower in the hierarch. (If that's true, perhaps this usage of a trivial model ought to be described somewhere in the RadioGroup JavaDoc. Or is it a more general pattern followed by a variety of selection components? Does the JavaDoc for the most general abstract selection component explain this usage?) So I look further down for the Radio objects themselves, and see that they are created within the populateItem() method of an anonymous subclass of ListView. Perhaps the relationship between RadioGroup and Radio would be more easily understood via a simpler (though less practical) example in which the set of Radio components were hardcoded -- my vague understanding of working with Listview is getting in the way. As it stands, we give each Radio component the same model as one of the ListItem components of the ListView. I presume the ListItem is built from one of the items of the java.util.List from which the ListView was contructed -- but how??? I suppose my next step is to look at the Wicket implementation of ListView and ListItem to figure out what is going on. --- This SF.net email is sponsored by: Splunk Inc. Do you grep through log files for problems? Stop! Download the new AJAX search engine that makes searching your log files as easy as surfing the web. DOWNLOAD SPLUNK! http://sel.as-us.falkag.net/sel?cmd=lnkkid3432bid#0486dat1642 ___ Wicket-user mailing list Wicket-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wicket-user
Re: [Wicket-user] ListView tutorial?
radiogroup asidelets take a simple example, we want to show a table of users:table tr wicket:id=listview tdspan wicket:id=firstname//tdtdspan wicket:id=lastname//td /tr/tablewhat we want is everything within tr.../tr to repeat once for every user. so we attach listview to the tr tag.what listview does is make its immediate children believe that their markup is that of the listview itself. so each immediate child believes that it is attached to the tr wicket:id=listview tag. we need to represent these immediate listview children with a container component, because each of these children may contain multiple children of its own, in our case the firstname/lastname labels. this is what the listitem is, its a simple WebMarkupContainer created for you so you dont have to do it everytime youself. so we will have a listitem container created for every list item in the list that feeds the lisview. but this is not enough. each of these listitems must contain the components that represent data within it (the firstname, lastname labels that we want to add). this is where populateitem comes in, it is called once for every listitem created and allows you to add components to it.so the listview render process looks like this:before each render: clear all children for every list item in the list: create a ListItem webmarkupcontainer add created ListItem as a child call populateItem with the created ListItem container to allow users to populate itrender: render all immediate children with own markupdoes this help or confuse you more?-IgorOn 1/23/06, Frank Silbermann [EMAIL PROTECTED] wrote:Has anyone written about the way ListView works in Wicket -- i.e. theroles played by ListView, ListItem and the models belonging to thesecomponents?I've looked at the JavaDoc in the hope of gaining some intuition as towhat is going on, but I'm having a difficult time seeing the forest because of all the trees.For example, I'm looking at the Component Reference examples,specifically the RadioGroupPage.The RadioGroup object is constructedwith new Model() -- which leads me to ask myself What kind of a silly model is that?Looking at the API documentation for RadioGroup, is says that thegroup's model is set to the model of the selected Radio component.SoI'm guessing that new Model() is just a filler to tell the RadioGroup NOT to search for a ComponentModel further up the hierarchy -- thistime, the model comes from down lower in the hierarch.(If that's true,perhaps this usage of a trivial model ought to be described somewhere in the RadioGroup JavaDoc.Or is it a more general pattern followed by avariety of selection components?Does the JavaDoc for the most generalabstract selection component explain this usage?)So I look further down for the Radio objects themselves, and see that they are created within the populateItem() method of an anonymoussubclass of ListView.Perhaps the relationship between RadioGroup andRadio would be more easily understood via a simpler (though lesspractical) example in which the set of Radio components were hardcoded -- my vague understanding of working with Listview is getting in theway.As it stands, we give each Radio component the same model as one of theListItem components of the ListView.I presume the ListItem is built from one of the items of the java.util.List from which the ListView wascontructed -- but how???I suppose my next step is to look at the Wicket implementation ofListView and ListItem to figure out what is going on. ---This SF.net email is sponsored by: Splunk Inc. Do you grep through log filesfor problems?Stop!Download the new AJAX search engine that makes searching your log files as easy as surfing theweb.DOWNLOAD SPLUNK!http://sel.as-us.falkag.net/sel?cmdlnkkid3432bid#0486dat1642 ___Wicket-user mailing listWicket-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wicket-user
Re: [Wicket-user] ListView tutorial?
here is an unrolled listview example using the ordered repeating view from extensions. ORV is like a listview in respect that it lets its immediate children use its markup.OrderedRepeatingView repeater=new OrderedRepeatingView(repeater);
for (int i=0;iusers.size();i++) { final User user=users.get(i); WebMarkupContainer item=new WebMarkupContainer(String.valueOf(i)); //1 repeater.add(item); //2 item.add(new Label(firstname,
user.getFirstName())); //3 item.add(new Label(lastname, user.getLastName())); //3}so in a listviewstep 1: is the ListItem container created for you. notice that we use i counter as the unique child id because we cannot have id collissions. this is also taken care for you by the ListView.
step 2 is also take care for you by the listviewstep 3 happens in your implementation of populateItem-IgorOn 1/23/06, Igor Vaynberg
[EMAIL PROTECTED] wrote:
radiogroup asidelets take a simple example, we want to show a table of users:table tr wicket:id=listview tdspan wicket:id=firstname//tdtdspan wicket:id=lastname//td
/tr/tablewhat we want is everything within tr.../tr to repeat once for every user. so we attach listview to the tr tag.what listview does is make its immediate children believe that their markup is that of the listview itself. so each immediate child believes that it is attached to the tr wicket:id=listview tag.
we need to represent these immediate listview children with a container component, because each of these children may contain multiple children of its own, in our case the firstname/lastname labels. this is what the listitem is, its a simple WebMarkupContainer created for you so you dont have to do it everytime youself.
so we will have a listitem container created for every list item in the list that feeds the lisview. but this is not enough. each of these listitems must contain the components that represent data within it (the firstname, lastname labels that we want to add).
this is where populateitem comes in, it is called once for every listitem created and allows you to add components to it.so the listview render process looks like this:before each render: clear all children
for every list item in the list: create a ListItem webmarkupcontainer add created ListItem as a child call populateItem with the created ListItem container to allow users to populate itrender:
render all immediate children with own markupdoes this help or confuse you more?-Igor
On 1/23/06, Frank Silbermann
[EMAIL PROTECTED] wrote:Has anyone written about the way ListView works in Wicket --
i.e. theroles played by ListView, ListItem and the models belonging to thesecomponents?I've looked at the JavaDoc in the hope of gaining some intuition as towhat is going on, but I'm having a difficult time seeing the forest
because of all the trees.For example, I'm looking at the Component Reference examples,specifically the RadioGroupPage.The RadioGroup object is constructedwith new Model() -- which leads me to ask myself What kind of a silly
model is that?Looking at the API documentation for RadioGroup, is says that thegroup's model is set to the model of the selected Radio component.SoI'm guessing that new Model() is just a filler to tell the RadioGroup
NOT to search for a ComponentModel further up the hierarchy -- thistime, the model comes from down lower in the hierarch.(If that's true,perhaps this usage of a trivial model ought to be described somewhere in
the RadioGroup JavaDoc.Or is it a more general pattern followed by avariety of selection components?Does the JavaDoc for the most generalabstract selection component explain this usage?)So I look further down for the Radio objects themselves, and see that
they are created within the populateItem() method of an anonymoussubclass of ListView.Perhaps the relationship between RadioGroup andRadio would be more easily understood via a simpler (though lesspractical) example in which the set of Radio components were hardcoded
-- my vague understanding of working with Listview is getting in theway.As it stands, we give each Radio component the same model as one of theListItem components of the ListView.I presume the ListItem is built
from one of the items of the java.util.List from which the ListView wascontructed -- but how???I suppose my next step is to look at the Wicket implementation ofListView and ListItem to figure out what is going on.
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Re: [Wicket-user] Javaranch Wicket Forum?
On 1/23/06, Martijn Dashorst [EMAIL PROTECTED] wrote: The biggest barrier I see that we have to pay for the use of jive. :-(Doesn't jive offer free OSS licences similar to Atlassian Jira?
[Wicket-user] Wicket in Action
I saw a couple of posts for wicket in Action .. was wondering if perhaps this will be available as part of the manning early access program ? Anyway, I am newbie to wicket (coming from struts,spring mvc,jsf tapestry background)and love the approach that the framework is taking. Without a doubt .. we will be using wicket on our next project. Keep up the good work!
Re: [Wicket-user] Wicket in Action
As one of the authors, we would gladly put our book into the early access program, but the book has to be pretty far into production before it becomes available through EAP. Nice to hear we already have one reader ;-) Martijn On 1/23/06, Serge Boulay [EMAIL PROTECTED] wrote: I saw a couple of posts for wicket in Action .. was wondering if perhaps this will be available as part of the manning early access program ? Anyway, I am newbie to wicket (coming from struts,spring mvc,jsf tapestry background) and love the approach that the framework is taking. Without a doubt .. we will be using wicket on our next project. Keep up the good work! -- Living a wicket life... Martijn Dashorst - http://www.jroller.com/page/dashorst Wicket 1.1 is out: http://wicket.sourceforge.net/wicket-1.1 --- This SF.net email is sponsored by: Splunk Inc. Do you grep through log files for problems? Stop! Download the new AJAX search engine that makes searching your log files as easy as surfing the web. DOWNLOAD SPLUNK! http://sel.as-us.falkag.net/sel?cmd=lnkkid3432bid#0486dat1642 ___ Wicket-user mailing list Wicket-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wicket-user
RE: [Wicket-user] ListView tutorial?
Igors description of the ListView operation is very helpful. What also confused me about the RadioGroupPage (of the component reference examples in the Wicket Library) was the use of models with each of the parts, the details of which are hidden from us in the examples by the use of text-saving alternate constructors. Im guessing that it works something like as follows (confirmation or correction would be most welcome!): When we create the ListView, we give it a java.util.List as a convenience via an alternate constructor, but this alternate constructor wraps the java.util.List in a wicket List that implements IModel. However, this IModel object is only used internally. When the ListView creates the ListItem container component for each java.util.List element, the ListItem is built with its own IModel wrapping the individual java.util.List element. The populateItem() method over-rides the ListViews abstract method in its concrete subclass, and is called to fill each ListItem with subcomponents, providing (among other things) an IModel for each element added to the ListItem. Typically, the subcomponents model is based on a piece of the ListItems model. For a simple label, for example, we can call getModelObject() on the ListItem to reach past the IModel wrapping, and then drill down to the relevant java.lang.String contained within. We can then allow the Labels convenience constructor to wrap the java.lang.String within an IModel. Alternately, we can construct a PropertyModel for the Label using the ListItems IModel and an OGNL string. Within a RadioGroup, the model for each Radio button can be anything that is distinguishable from the other Radio buttons models. Rather than recording TRUE or FALSE for each Radio button as we would for Checkboxs, the framework simply sets the model of the overall RadioGroup to the selected Radio buttons model. (If the RadioGroup is initialized to have no Radio button selected, we create it with an empty default Model, as this will differ from every Radio buttons model.) If we create a set of Radio buttons dynamically based via a ListView, the models for each ListItem will be distinguishable from one another -- with a 1-to-1 correspondence between ListItems and Radio buttons. Therefore, the easiest thing to do is to re-use each ListItems IModel as the IModel for its Radio button, as is done in the RadioGroupPage example. Is this the intuition? -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Igor Vaynberg Sent: Monday, January 23, 2006 12:45 PM To: wicket-user@lists.sourceforge.net Subject: Re: [Wicket-user] ListView tutorial? radiogroup aside lets take a simple example, we want to show a table of users: table tr wicket:id=listview tdspan wicket:id=firstname//tdtdspan wicket:id=lastname//td /tr /table what we want is everything within tr.../tr to repeat once for every user. so we attach listview to the tr tag. what listview does is make its immediate children believe that their markup is that of the listview itself. so each immediate child believes that it is attached to the tr wicket:id=listview tag. we need to represent these immediate listview children with a container component, because each of these children may contain multiple children of its own, in our case the firstname/lastname labels. this is what the listitem is, its a simple WebMarkupContainer created for you so you dont have to do it everytime youself. so we will have a listitem container created for every list item in the list that feeds the lisview. but this is not enough. each of these listitems must contain the components that represent data within it (the firstname, lastname labels that we want to add). this is where populateitem comes in, it is called once for every listitem created and allows you to add components to it. so the listview render process looks like this: before each render: clear all children for every list item in the list: create a ListItem webmarkupcontainer add created ListItem as a child call populateItem with the created ListItem container to allow users to populate it render: render all immediate children with own markup does this help or confuse you more? -Igor On 1/23/06, Frank Silbermann [EMAIL PROTECTED] wrote: Has anyone written about the way ListView works in Wicket -- i.e. the roles played by ListView, ListItem and the models belonging to these components? I've looked at the JavaDoc in the hope of gaining some intuition as to what is going on, but I'm having a difficult time seeing the forest because of all the trees. For example, I'm looking at the Component Reference examples, specifically the RadioGroupPage.The RadioGroup object is constructed with new Model() -- which leads me to ask myself What kind of a silly model is that? Looking at the API documentation for RadioGroup, is says that the group's model is set to the model of the selected Radio
[Wicket-user] Concerning non-session scoped Lists for paging
I was looking at the Library example and I noticed it uses a PageableListView added to a PagingNavigator to display the List of books. In this case all the books are being populated from a single List. How do you handle the cases where you need pagation, but each request for a new page should go out o the server and get the new list. I don't like the idea of having to store potentially thousands and thousands of rows of data into a List just to create a sortable list. (I understand one initial query is needed just to get the overall size of the result set to create the page numbers, but that's a big difference in overhead vs having to populate all the potential objects from that query). To handle this in Wicket, would someone need to write a new component to satisfy this business need or can it be done using some standard iterating tag (similar to JSTL's forEach) and straight HTML? I'm new to using Wicket and still new to JSF as well, but I find the whole component type of architecture a mixed blessing. For simple stuff it's nice to have some out-of-the-box display features coded for you, but when you end up having to customize, I often find a pain. I know HTML and JSTL so coding my front end with simple JSTL and HTML is easy. It's a shame that it seems like these component based frameworks require you to work within the components to achieve what you want. For example, in JSF I was wanting to display a bunch of stuff in divs as I iterated over a collection. With standard JSTL and HMTL this is a piece of cake, but in JSF I couldn't even find a component to let me do this. Everyone said use the DataTable, but it didn't provide the functionality I needed. Thanks for any feedback. -- Rick --- This SF.net email is sponsored by: Splunk Inc. Do you grep through log files for problems? Stop! Download the new AJAX search engine that makes searching your log files as easy as surfing the web. DOWNLOAD SPLUNK! http://sel.as-us.falkag.net/sel?cmd=lnkkid3432bid#0486dat1642 ___ Wicket-user mailing list Wicket-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wicket-user
Re: [Wicket-user] Concerning non-session scoped Lists for paging
Rick, The components provided by the core wicket project are pretty basic in what they can accomplish out of the box. For your particular problem there are several options. One of them, which is very elegant if I may say so, are the repeaters in the Wicket extensions project. You can see them in action in the repeaters example. They use an IDataProvider that has two methods: one for getting the count, and one for getting a paginated iterator retrieving the results for the actual page rendered. The extensions project provides the DataView, which is an extension on the ListView that knows how to deal with the IDataProvider directly. There are more powerful options, such as sorting and other neat things. In our own application we only use DataViews now. The other option is to bake a solution yourself or try the wicket-contrib-data and wicket-contrib-data-hibernate3 jar files. However I think they have been superseeded with the repeater package in wicket-extensions. Martijn On 1/23/06, Rick Reumann [EMAIL PROTECTED] wrote: I was looking at the Library example and I noticed it uses a PageableListView added to a PagingNavigator to display the List of books. In this case all the books are being populated from a single List. How do you handle the cases where you need pagation, but each request for a new page should go out o the server and get the new list. I don't like the idea of having to store potentially thousands and thousands of rows of data into a List just to create a sortable list. (I understand one initial query is needed just to get the overall size of the result set to create the page numbers, but that's a big difference in overhead vs having to populate all the potential objects from that query). To handle this in Wicket, would someone need to write a new component to satisfy this business need or can it be done using some standard iterating tag (similar to JSTL's forEach) and straight HTML? I'm new to using Wicket and still new to JSF as well, but I find the whole component type of architecture a mixed blessing. For simple stuff it's nice to have some out-of-the-box display features coded for you, but when you end up having to customize, I often find a pain. I know HTML and JSTL so coding my front end with simple JSTL and HTML is easy. It's a shame that it seems like these component based frameworks require you to work within the components to achieve what you want. For example, in JSF I was wanting to display a bunch of stuff in divs as I iterated over a collection. With standard JSTL and HMTL this is a piece of cake, but in JSF I couldn't even find a component to let me do this. Everyone said use the DataTable, but it didn't provide the functionality I needed. Thanks for any feedback. -- Rick --- This SF.net email is sponsored by: Splunk Inc. Do you grep through log files for problems? Stop! Download the new AJAX search engine that makes searching your log files as easy as surfing the web. DOWNLOAD SPLUNK! http://sel.as-us.falkag.net/sel?cmdlnkkid3432bid#0486dat1642 ___ Wicket-user mailing list Wicket-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wicket-user -- Living a wicket life... Martijn Dashorst - http://www.jroller.com/page/dashorst Wicket 1.1 is out: http://wicket.sourceforge.net/wicket-1.1 --- This SF.net email is sponsored by: Splunk Inc. Do you grep through log files for problems? Stop! Download the new AJAX search engine that makes searching your log files as easy as surfing the web. DOWNLOAD SPLUNK! http://sel.as-us.falkag.net/sel?cmd=lnkkid3432bid#0486dat1642 ___ Wicket-user mailing list Wicket-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wicket-user
Re: [Wicket-user] Concerning non-session scoped Lists for paging
In wicket extentions (the 1.2 stream) we have special Listviews/Repeaters for that in conjection with models that supports just query things what is needed.See the wicket.extensions.markup.html.repeater.* package for Components/Models.
In the wicket-examples/repeater we have examples for that.for example:public class ContactDataProvider implements IDataProvider{ protected ContactsDatabase getContactsDB() { return
DatabaseLocator.getDatabase(); } /** * retrieves contacts from database starting with index codefirst/code * and ending with codefirst+count/code *
* @see wicket.extensions.markup.html.repeater.data.IDataProvider#iterator(int, * int) */ public Iterator iterator(int first, int count) { return getContactsDB().find(first, count, firstName, true).iterator();
} /** * returns total number of contacts in the database * * @see wicket.extensions.markup.html.repeater.data.IDataProvider#size() */ public int size() {
return getContactsDB().getCount(); } /** * wraps retrieved contact pojo with a wicket model * * @see wicket.extensions.markup.html.repeater.data.IDataProvider#model(java.lang.Object
) */ public IModel model(Object object) { return new DetachableContactModel((Contact)object); }}On 1/23/06,
Rick Reumann [EMAIL PROTECTED] wrote:
I was looking at the Library example and I noticed it uses aPageableListView added to a PagingNavigator to display the List ofbooks. In this case all the books are being populated from a singleList.How do you handle the cases where you need pagation, but each request
for a new page should go out o the server and get the new list. Idon't like the idea of having to store potentially thousands andthousands of rows of data into a List just to create a sortable list.(I understand one initial query is needed just to get the overall size
of the result set to create the page numbers, but that's a bigdifference in overhead vs having to populate all the potential objectsfrom that query). To handle this in Wicket, would someone need towrite a new component to satisfy this business need or can it be done
using some standard iterating tag (similar to JSTL's forEach) andstraight HTML?I'm new to using Wicket and still new to JSF as well, but I find thewhole component type of architecture a mixed blessing. For simple
stuff it's nice to have some out-of-the-box display features coded foryou, but when you end up having to customize, I often find a pain. Iknow HTML and JSTL so coding my front end with simple JSTL and HTML is
easy. It's a shame that it seems like these component based frameworksrequire you to work within the components to achieve what you want.For example, in JSF I was wanting to display a bunch of stuff in divs
as I iterated over a collection. With standard JSTL and HMTL this is apiece of cake, but in JSF I couldn't even find a component to let medo this. Everyone said use the DataTable, but it didn't provide thefunctionality I needed.
Thanks for any feedback.--Rick---This SF.net email is sponsored by: Splunk Inc. Do you grep through log filesfor problems?Stop!Download the new AJAX search engine that makes
searching your log files as easy as surfing theweb.DOWNLOAD SPLUNK!http://sel.as-us.falkag.net/sel?cmdlnkkid3432bid#0486dat1642
___Wicket-user mailing listWicket-user@lists.sourceforge.net
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Re: [Wicket-user] ListView tutorial?
this is pretty close yes.when you construct a listview with a list in the constructor instead of imodel, the listview creates a simple Model implementation and sticks the list into it. this is really nothing more then a convinience constructor. the same code would look like this w/out it:
List list=getList();new ListView(id, list);ornew ListView(id, new Model((Serializable)list));so now that we have the listview how can listitems retrieve the item of the list they are created to represent? for this listview assigns each created listitem with a model that wraps the item in the list the listitem container represents.
this is done in ListView.getListItemModel method which you can override to provide your own IModel implementation that should wrap the item sin the list.so what this allows you to do ispupulateItem(ListItem item) {
User=(User)item.getModelObject();retrieve the item of the list this listitem represents w/out accessing the list directly. if you wrap listitem's model with a compound property model then its children can also access it easily.
now about the RadioGroup.this component was born because RadioChoice was too inflexible since it took over the generation of markup. so you caouldnt use it in a listview or any other repeater.the way RadioGroup/Radio work is that
the RadioGroup's model represents the store where you want the selected item to be put, while Radio's model represents the value itself you want to retrieve. When the form is submitted the RadioGroup's model/object/ is set to selected Radio's model/object/
so something like this:class FormBean { String color; //setters, getters }FormBean bean=new FormBean();form.add(new RadioGroup(gorup, new PropertyModel(bean, color)));
...form.add(new Radio(radio1, new Model(green));form.add(new Radio(radio2, new Model(yellow));form.add(new Radio(radio3, new Model(red));
so if you select radio2 then on form submit this code is going to runRadioGroup.setModelObject(radio2.getModelObject());so FormBean's color property will be set to string yellowdoes this clear things up a bit?
-IgorOn 1/23/06, Frank Silbermann [EMAIL PROTECTED] wrote:
Igor's description of the ListView operation is very helpful.
What also confused me about the RadioGroupPage (of the component reference examples in the
Wicket Library) was the use of models with each of the parts, the details of which
are hidden from us in the examples by the use of text-saving alternate
constructors. I'm guessing
that it works something like as follows (confirmation or correction would be
most welcome!):
When we create the ListView,
we give it a java.util.List as a convenience via an
alternate constructor, but this alternate constructor wraps the java.util.List in a wicket List that implements IModel.
However, this IModel object is only used
internally.
When the ListView
creates the ListItem container component for each java.util.List element, the ListItem
is built with its own IModel wrapping the individual java.util.List element.
The populateItem() method over-rides the ListView's
abstract method in its concrete subclass, and is called to fill each ListItem with subcomponents, providing (among other things)
an IModel for each element added to the ListItem. Typically,
the subcomponent's model is based on a piece of the ListItem's
model. For a simple label, for example, we can
call getModelObject() on the ListItem to reach past
the IModel wrapping, and then drill down to the
relevant java.lang.String contained within. We can then allow the Label's
convenience constructor to wrap the java.lang.String
within an IModel. Alternately, we can construct a PropertyModel for the Label using the ListItem's
IModel and an OGNL string.
Within a RadioGroup,
the model for each Radio button can be anything that is distinguishable from
the other Radio buttons' models.
Rather than recording TRUE or FALSE for each Radio button as we would
for Checkbox's, the framework simply sets the model of the overall RadioGroup to the selected Radio button's model. (If the RadioGroup
is initialized to have no Radio button selected, we create it with an empty "default"
Model, as this will differ from every Radio button's model.)
If we create a set of Radio buttons
dynamically based via a ListView, the models for each
ListItem will be distinguishable from one another --
with a 1-to-1 correspondence between ListItem's
and Radio buttons. Therefore, the
easiest thing to do is to re-use each ListItem's
IModel as the IModel for its
Radio button, as is done in the RadioGroupPage
example.
Is this the intuition?
-Original Message-
From:
[EMAIL PROTECTED] [mailto:
[EMAIL PROTECTED]]
On Behalf Of Igor Vaynberg
Sent: Monday, January 23, 2006
12:45 PM
To:
wicket-user@lists.sourceforge.net
Subject: Re: [Wicket-user]
ListView tutorial?
radiogroup aside
lets take a simple example, we want to show a table of users:
table
tr wicket:id=listview
tdspan
wicket:id=firstname//tdtdspan
[Wicket-user] No version manager available exception instead of Page Expired on second click to versioned page
In Wicket 1.1 if the session expires and you click on a versioned page, the first time it will take you to the Page Expired page. If you then hit back and click the link again, it'll throw an exception. Is that a bug? java.lang.IllegalStateException: No version manager available to retrieve requested versionNumber 2 at wicket.Page.getVersion(Page.java:387) at wicket.Session.getPage(Session.java:271) at wicket.protocol.http.WebRequestCycle.callComponentListener(WebRequestCycle.java:425) at wicket.protocol.http.WebRequestCycle.parseRequest(WebRequestCycle.java:140) at wicket.RequestCycle.request(RequestCycle.java:418) at wicket.protocol.http.WicketServlet.doGet(WicketServlet.java:197) at javax.servlet.http.HttpServlet.service(HttpServlet.java:126) at javax.servlet.http.HttpServlet.service(HttpServlet.java:103) at com.caucho.server.http.FilterChainServlet.doFilter(FilterChainServlet.java:96) at com.bci.car.servlets.gzip.GzipFilter.doFilter(GzipFilter.java:127) at com.caucho.server.http.FilterChainFilter.doFilter(FilterChainFilter.java:88) at com.caucho.server.http.Invocation.service(Invocation.java:315) at com.caucho.server.http.CacheInvocation.service(CacheInvocation.java:135) at com.caucho.server.http.HttpRequest.handleRequest(HttpRequest.java:253) at com.caucho.server.http.HttpRequest.handleConnection(HttpRequest.java:170) at com.caucho.server.TcpConnection.run(TcpConnection.java:139) at java.lang.Thread.run(Thread.java:613) --- This SF.net email is sponsored by: Splunk Inc. Do you grep through log files for problems? Stop! Download the new AJAX search engine that makes searching your log files as easy as surfing the web. DOWNLOAD SPLUNK! http://sel.as-us.falkag.net/sel?cmd=lnkkid=103432bid=230486dat=121642 ___ Wicket-user mailing list Wicket-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wicket-user
Re: [Wicket-user] No version manager available exception instead of Page Expired on second click to versioned page
You have then already a session again.With somehow that page already again. but it hasn't have that version yet.What do you expect to get?johanOn 1/23/06, Robert McClay [EMAIL PROTECTED] wrote: In Wicket 1.1 if the session expires and you click on a versioned page,the first time it will take you to the Page Expired page. If you thenhit back and click the link again, it'll throw an exception. Is that a bug?java.lang.IllegalStateException: No version manager available toretrieve requested versionNumber 2 atwicket.Page.getVersion(Page.java:387) atwicket.Session.getPage(Session.java:271) at wicket.protocol.http.WebRequestCycle.callComponentListener(WebRequestCycle.java:425) atwicket.protocol.http.WebRequestCycle.parseRequest(WebRequestCycle.java:140) at wicket.RequestCycle.request(RequestCycle.java :418) atwicket.protocol.http.WicketServlet.doGet(WicketServlet.java:197) atjavax.servlet.http.HttpServlet.service(HttpServlet.java:126) atjavax.servlet.http.HttpServlet.service(HttpServlet.java:103) at com.caucho.server.http.FilterChainServlet.doFilter(FilterChainServlet.java:96) atcom.bci.car.servlets.gzip.GzipFilter.doFilter(GzipFilter.java:127) atcom.caucho.server.http.FilterChainFilter.doFilter (FilterChainFilter.java:88) at com.caucho.server.http.Invocation.service(Invocation.java:315) atcom.caucho.server.http.CacheInvocation.service(CacheInvocation.java:135) atcom.caucho.server.http.HttpRequest.handleRequest (HttpRequest.java:253) atcom.caucho.server.http.HttpRequest.handleConnection(HttpRequest.java:170) at com.caucho.server.TcpConnection.run(TcpConnection.java:139) at java.lang.Thread.run(Thread.java:613) ---This SF.net email is sponsored by: Splunk Inc. Do you grep through log filesfor problems?Stop!Download the new AJAX search engine that makes searching your log files as easy as surfing theweb.DOWNLOAD SPLUNK!http://sel.as-us.falkag.net/sel?cmd=lnkkid=103432bid=230486dat=121642 ___Wicket-user mailing listWicket-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wicket-user
Re: [Wicket-user] No version manager available exception instead of Page Expired on second click to versioned page
why not the same page expired page? i think not having a version can only happen because of that?-IgorOn 1/23/06, Johan Compagner [EMAIL PROTECTED] wrote:You have then already a session again.With somehow that page already again. but it hasn't have that version yet.What do you expect to get?johanOn 1/23/06, Robert McClay [EMAIL PROTECTED] wrote: In Wicket 1.1 if the session expires and you click on a versioned page,the first time it will take you to the Page Expired page. If you thenhit back and click the link again, it'll throw an exception. Is that a bug?java.lang.IllegalStateException: No version manager available toretrieve requested versionNumber 2 atwicket.Page.getVersion(Page.java:387) atwicket.Session.getPage(Session.java:271) at wicket.protocol.http.WebRequestCycle.callComponentListener(WebRequestCycle.java:425) atwicket.protocol.http.WebRequestCycle.parseRequest(WebRequestCycle.java:140) at wicket.RequestCycle.request(RequestCycle.java :418) atwicket.protocol.http.WicketServlet.doGet(WicketServlet.java:197) atjavax.servlet.http.HttpServlet.service(HttpServlet.java:126) atjavax.servlet.http.HttpServlet.service(HttpServlet.java:103) at com.caucho.server.http.FilterChainServlet.doFilter(FilterChainServlet.java:96) atcom.bci.car.servlets.gzip.GzipFilter.doFilter(GzipFilter.java:127) atcom.caucho.server.http.FilterChainFilter.doFilter (FilterChainFilter.java:88) at com.caucho.server.http.Invocation.service(Invocation.java:315) atcom.caucho.server.http.CacheInvocation.service(CacheInvocation.java:135) atcom.caucho.server.http.HttpRequest.handleRequest (HttpRequest.java:253) atcom.caucho.server.http.HttpRequest.handleConnection(HttpRequest.java:170) at com.caucho.server.TcpConnection.run(TcpConnection.java:139) at java.lang.Thread.run(Thread.java:613) ---This SF.net email is sponsored by: Splunk Inc. Do you grep through log filesfor problems?Stop!Download the new AJAX search engine that makes searching your log files as easy as surfing theweb.DOWNLOAD SPLUNK! http://sel.as-us.falkag.net/sel?cmd=lnkkid=103432bid=230486dat=121642 ___Wicket-user mailing listWicket-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wicket-user
Re: [Wicket-user] No version manager available exception instead of Page Expired on second click to versioned page
fixed it so that we always show a page expired page when a page or version can't be found.On 1/24/06, Igor Vaynberg [EMAIL PROTECTED] wrote:why not the same page expired page? i think not having a version can only happen because of that? -IgorOn 1/23/06, Johan Compagner [EMAIL PROTECTED] wrote:You have then already a session again.With somehow that page already again. but it hasn't have that version yet.What do you expect to get?johanOn 1/23/06, Robert McClay [EMAIL PROTECTED] wrote: In Wicket 1.1 if the session expires and you click on a versioned page,the first time it will take you to the Page Expired page. If you thenhit back and click the link again, it'll throw an exception. Is that a bug?java.lang.IllegalStateException: No version manager available toretrieve requested versionNumber 2 atwicket.Page.getVersion(Page.java:387) atwicket.Session.getPage(Session.java:271) at wicket.protocol.http.WebRequestCycle.callComponentListener(WebRequestCycle.java:425) atwicket.protocol.http.WebRequestCycle.parseRequest(WebRequestCycle.java:140) at wicket.RequestCycle.request(RequestCycle.java :418) atwicket.protocol.http.WicketServlet.doGet(WicketServlet.java:197) atjavax.servlet.http.HttpServlet.service(HttpServlet.java:126) atjavax.servlet.http.HttpServlet.service(HttpServlet.java:103) at com.caucho.server.http.FilterChainServlet.doFilter(FilterChainServlet.java:96) atcom.bci.car.servlets.gzip.GzipFilter.doFilter(GzipFilter.java:127) atcom.caucho.server.http.FilterChainFilter.doFilter (FilterChainFilter.java:88) at com.caucho.server.http.Invocation.service(Invocation.java:315) atcom.caucho.server.http.CacheInvocation.service(CacheInvocation.java:135) atcom.caucho.server.http.HttpRequest.handleRequest (HttpRequest.java:253) atcom.caucho.server.http.HttpRequest.handleConnection(HttpRequest.java:170) at com.caucho.server.TcpConnection.run(TcpConnection.java:139) at java.lang.Thread.run(Thread.java:613) ---This SF.net email is sponsored by: Splunk Inc. Do you grep through log filesfor problems?Stop!Download the new AJAX search engine that makes searching your log files as easy as surfing theweb.DOWNLOAD SPLUNK! http://sel.as-us.falkag.net/sel?cmd=lnkkid=103432bid=230486dat=121642 ___Wicket-user mailing listWicket-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wicket-user
Re: [Wicket-user] Wicket in Action
I hope too that it will be wicket 1.2 and byound (and contain special part for Ajax), I can't wait to put my hand on it, yesterday my company decided to use wicket as the main tool for web application, and I was asked to make a small team to port what we have/need into wicket :), YPY!!! On 1/23/06, Martijn Dashorst [EMAIL PROTECTED] wrote: As one of the authors, we would gladly put our book into the early access program, but the book has to be pretty far into production before it becomes available through EAP. Nice to hear we already have one reader ;-) Martijn On 1/23/06, Serge Boulay [EMAIL PROTECTED] wrote: I saw a couple of posts for wicket in Action .. was wondering if perhaps this will be available as part of the manning early access program ? Anyway, I am newbie to wicket (coming from struts,spring mvc,jsf tapestry background) and love the approach that the framework is taking. Without a doubt .. we will be using wicket on our next project. Keep up the good work! -- Living a wicket life... Martijn Dashorst - http://www.jroller.com/page/dashorst Wicket 1.1 is out: http://wicket.sourceforge.net/wicket-1.1 --- This SF.net email is sponsored by: Splunk Inc. Do you grep through log files for problems? Stop! Download the new AJAX search engine that makes searching your log files as easy as surfing the web. DOWNLOAD SPLUNK! http://sel.as-us.falkag.net/sel?cmdlnkkid3432bid#0486dat1642 ___ Wicket-user mailing list Wicket-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wicket-user -- Regards, Ali --- This SF.net email is sponsored by: Splunk Inc. Do you grep through log files for problems? Stop! Download the new AJAX search engine that makes searching your log files as easy as surfing the web. DOWNLOAD SPLUNK! http://sel.as-us.falkag.net/sel?cmd=lnkkid3432bid#0486dat1642 ___ Wicket-user mailing list Wicket-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wicket-user
