Re: ListView broken?
How about just use PropertyListView?
On Thu, Oct 23, 2008 at 9:39 AM, pieter claassen <[EMAIL PROTECTED]> wrote:
> Guys, thanks for all your feedback. You were right.
>
> Cheers,
> Pieter
>
> On Oct 23, 2008, at 2:44 PM, Jeremy Thomerson wrote:
>
>> Johan nailed it... here are your bad lines:
>>
>> System.out.println("+++"+
>> item.getModelObject().getClass().getName());
>> final QuestionAndAnswer qanda = (QuestionAndAnswer)
>> item.getModelObject();
>> setModel(new CompoundPropertyModel(qanda));
>>
>> That should just be changed to:
>>
>> item.setModel(new CompoundPropertyModel(item.getModel());
>>
>> if that's what you want.
>>
>> -- Jeremy Thomerson
>> http://www.wickettraining.com
>>
>> On Thu, Oct 23, 2008 at 6:13 AM, Johan Compagner
>> <[EMAIL PROTECTED]>wrote:
>>
>>> What are you doing there?
>>> You get a model object from the listitem
>>> And then you are calling setmodel(compound) on the listview itself?
>>> Why is that then you are changing the model of the listview inside the
>>> loop that it goes over them creating listitems!
>>>
>>> On 10/23/08, pieter claassen <[EMAIL PROTECTED]> wrote:
I am getting a classcast exception in ListView that is stumping me.
This is the error message (top few lines)
WicketMessage: Error attaching this container for rendering:
[MarkupContainer [Component id = questioneditform]]
Root cause:
java.lang.ClassCastException: com.musmato.model.QuestionAndAnswer
at
org
.apache
.wicket.markup.html.list.ListItemModel.getObject(ListItemModel.java:55)
at org.apache.wicket.Component.getModelObject(Component.java:1558)
at com.musmato.wicket.pages.templates.TemplateEditPage$QuestionEditForm
$1.populateItem(TemplateEditPage.java:93)
This is the code that generates my ListItems:
ListView questions = new ListView("questions",
>>>
>>> template
.getQuestions()) {
@Override
protected void populateItem(ListItem item)
>>>
>>> {
final QuestionAndAnswer qanda =
>>>
>>> (QuestionAndAnswer) item
.getModelObject();
setModel(new
>>>
>>> CompoundPropertyModel(qanda));
I know for a fact that template.getQuestions() produces an ArrayList.
The arraylist works when there is only 1 item in it but when I have
more than 1 item, it fails with the ClassCastException. Is this a
wicket problem or am I doing something wrong?
Regards,
Pieter
pieter claassen
[EMAIL PROTECTED]
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>>>
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>>>
>>>
>
> pieter claassen
> [EMAIL PROTECTED]
>
>
>
>
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>
>
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Re: ListView broken?
Guys, thanks for all your feedback. You were right.
Cheers,
Pieter
On Oct 23, 2008, at 2:44 PM, Jeremy Thomerson wrote:
Johan nailed it... here are your bad lines:
System.out.println("+++"+
item.getModelObject().getClass().getName());
final QuestionAndAnswer qanda = (QuestionAndAnswer)
item.getModelObject();
setModel(new CompoundPropertyModel(qanda));
That should just be changed to:
item.setModel(new CompoundPropertyModel(item.getModel());
if that's what you want.
--
Jeremy Thomerson
http://www.wickettraining.com
On Thu, Oct 23, 2008 at 6:13 AM, Johan Compagner
<[EMAIL PROTECTED]>wrote:
What are you doing there?
You get a model object from the listitem
And then you are calling setmodel(compound) on the listview itself?
Why is that then you are changing the model of the listview inside
the
loop that it goes over them creating listitems!
On 10/23/08, pieter claassen <[EMAIL PROTECTED]> wrote:
I am getting a classcast exception in ListView that is stumping me.
This is the error message (top few lines)
WicketMessage: Error attaching this container for rendering:
[MarkupContainer [Component id = questioneditform]]
Root cause:
java.lang.ClassCastException: com.musmato.model.QuestionAndAnswer
at
org
.apache
.wicket
.markup.html.list.ListItemModel.getObject(ListItemModel.java:55)
at org.apache.wicket.Component.getModelObject(Component.java:1558)
at com.musmato.wicket.pages.templates.TemplateEditPage
$QuestionEditForm
$1.populateItem(TemplateEditPage.java:93)
This is the code that generates my ListItems:
ListView questions = new ListView("questions",
template
.getQuestions()) {
@Override
protected void populateItem(ListItem
item)
{
final QuestionAndAnswer qanda =
(QuestionAndAnswer) item
.getModelObject
();
setModel(new
CompoundPropertyModel(qanda));
I know for a fact that template.getQuestions() produces an
ArrayList.
The arraylist works when there is only 1 item in it but when I have
more than 1 item, it fails with the ClassCastException. Is this a
wicket problem or am I doing something wrong?
Regards,
Pieter
pieter claassen
[EMAIL PROTECTED]
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To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
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To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
pieter claassen
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Re: ListView broken?
Johan nailed it... here are your bad lines:
System.out.println("+++"+
item.getModelObject().getClass().getName());
final QuestionAndAnswer qanda = (QuestionAndAnswer)
item.getModelObject();
setModel(new CompoundPropertyModel(qanda));
That should just be changed to:
item.setModel(new CompoundPropertyModel(item.getModel());
if that's what you want.
--
Jeremy Thomerson
http://www.wickettraining.com
On Thu, Oct 23, 2008 at 6:13 AM, Johan Compagner <[EMAIL PROTECTED]>wrote:
> What are you doing there?
> You get a model object from the listitem
> And then you are calling setmodel(compound) on the listview itself?
> Why is that then you are changing the model of the listview inside the
> loop that it goes over them creating listitems!
>
> On 10/23/08, pieter claassen <[EMAIL PROTECTED]> wrote:
> > I am getting a classcast exception in ListView that is stumping me.
> >
> > This is the error message (top few lines)
> >
> > WicketMessage: Error attaching this container for rendering:
> > [MarkupContainer [Component id = questioneditform]]
> >
> > Root cause:
> >
> > java.lang.ClassCastException: com.musmato.model.QuestionAndAnswer
> > at
> > org
> > .apache
> > .wicket.markup.html.list.ListItemModel.getObject(ListItemModel.java:55)
> > at org.apache.wicket.Component.getModelObject(Component.java:1558)
> > at com.musmato.wicket.pages.templates.TemplateEditPage$QuestionEditForm
> > $1.populateItem(TemplateEditPage.java:93)
> >
> >
> > This is the code that generates my ListItems:
> >
> > ListView questions = new ListView("questions",
> template
> > .getQuestions()) {
> >
> >
> > @Override
> > protected void populateItem(ListItem item)
> {
> > final QuestionAndAnswer qanda =
> (QuestionAndAnswer) item
> > .getModelObject();
> > setModel(new
> CompoundPropertyModel(qanda));
> >
> >
> >
> > I know for a fact that template.getQuestions() produces an ArrayList.
> >
> > The arraylist works when there is only 1 item in it but when I have
> > more than 1 item, it fails with the ClassCastException. Is this a
> > wicket problem or am I doing something wrong?
> >
> > Regards,
> > Pieter
> > pieter claassen
> > [EMAIL PROTECTED]
> >
> >
> >
> >
> > -
> > To unsubscribe, e-mail: [EMAIL PROTECTED]
> > For additional commands, e-mail: [EMAIL PROTECTED]
> >
> >
>
> -
> To unsubscribe, e-mail: [EMAIL PROTECTED]
> For additional commands, e-mail: [EMAIL PROTECTED]
>
>
Re: ListView broken?
What are you doing there?
You get a model object from the listitem
And then you are calling setmodel(compound) on the listview itself?
Why is that then you are changing the model of the listview inside the
loop that it goes over them creating listitems!
On 10/23/08, pieter claassen <[EMAIL PROTECTED]> wrote:
> I am getting a classcast exception in ListView that is stumping me.
>
> This is the error message (top few lines)
>
> WicketMessage: Error attaching this container for rendering:
> [MarkupContainer [Component id = questioneditform]]
>
> Root cause:
>
> java.lang.ClassCastException: com.musmato.model.QuestionAndAnswer
> at
> org
> .apache
> .wicket.markup.html.list.ListItemModel.getObject(ListItemModel.java:55)
> at org.apache.wicket.Component.getModelObject(Component.java:1558)
> at com.musmato.wicket.pages.templates.TemplateEditPage$QuestionEditForm
> $1.populateItem(TemplateEditPage.java:93)
>
>
> This is the code that generates my ListItems:
>
> ListView questions = new ListView("questions", template
> .getQuestions()) {
>
>
> @Override
> protected void populateItem(ListItem item) {
> final QuestionAndAnswer qanda =
> (QuestionAndAnswer) item
> .getModelObject();
> setModel(new
> CompoundPropertyModel(qanda));
>
>
>
> I know for a fact that template.getQuestions() produces an ArrayList.
>
> The arraylist works when there is only 1 item in it but when I have
> more than 1 item, it fails with the ClassCastException. Is this a
> wicket problem or am I doing something wrong?
>
> Regards,
> Pieter
> pieter claassen
> [EMAIL PROTECTED]
>
>
>
>
> -
> To unsubscribe, e-mail: [EMAIL PROTECTED]
> For additional commands, e-mail: [EMAIL PROTECTED]
>
>
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
Re: ListView broken?
I suspect there may be a strange interaction with compound property models, since the name of your listview is questions and you also have a getQuestions() method in your upper level model object.. I'm just guessing but can you try to change the name of your listview to "questionList" instead of "questions" and try again.. by the way are you sure that you've rebuilt and redeployed your application.. -- View this message in context: http://www.nabble.com/ListView-broken--tp20126952p20128604.html Sent from the Wicket - User mailing list archive at Nabble.com. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: ListView broken?
So, what does it print when you print out the class name?
On Thu, Oct 23, 2008 at 6:24 AM, pieter claassen <[EMAIL PROTECTED]> wrote:
> Ok, I might be doing something thats not ok but . there are not two
> ListViews on this page (there are 3 forms? Is this a problem?)
> ClassCastException is throw at System.out.println("")
>
>
> package com.musmato.wicket.pages.templates;
>
> import java.util.Arrays;
>
> import org.apache.wicket.markup.html.form.DropDownChoice;
> import org.apache.wicket.markup.html.form.Form;
> import org.apache.wicket.markup.html.form.RequiredTextField;
> import org.apache.wicket.markup.html.form.TextArea;
> import org.apache.wicket.markup.html.link.Link;
> import org.apache.wicket.markup.html.list.ListItem;
> import org.apache.wicket.markup.html.list.ListView;
> import org.apache.wicket.model.CompoundPropertyModel;
>
> import com.musmato.model.QuestionAndAnswer;
> import com.musmato.model.Role;
> import com.musmato.model.Template;
> import com.musmato.model.WebControlType;
> import com.musmato.wicket.model.QuestionAndAnswerWebModel;
> import com.musmato.wicket.model.TemplateWebModel;
> import com.musmato.wicket.pages.AuthPage;
> import com.musmato.wicket.util.WicketApplication;
>
> public class TemplateEditPage extends AuthPage {
>
>public TemplateEditPage(TemplateWebModel templatemodel) {
>
>add(new TemplateEditForm("templateeditform", templatemodel));
>add(new QuestionAddForm("questionaddform", templatemodel));
>add(new QuestionEditForm("questioneditform", templatemodel));
>}
>
>@Override
>public Role[] getAllowedRoles() {
>// TODO Auto-generated method stub
>return null;
>}
>
>private class TemplateEditForm extends Form {
>private final Template template;
>
>public TemplateEditForm(String id, TemplateWebModel
> templatemodel) {
>super(id);
>template = (Template) templatemodel.getObject();
>setModel(new CompoundPropertyModel(templatemodel));
>add(new RequiredTextField("name"));
>add(new RequiredTextField("version"));
>add(new TextArea("description"));
>}
>
>@Override
>public void onSubmit() {
>
> WicketApplication.get().getTemplateFactory().store(template);
>setResponsePage(new TemplateEditPage(new
> TemplateWebModel(template)));
>}
>}
>
>private class QuestionAddForm extends Form {
>private final Template template;
>
>public QuestionAddForm(String id, TemplateWebModel
> templatemodel) {
>super(id);
>template = (Template) templatemodel.getObject();
>setModel(new CompoundPropertyModel(new
> QuestionAndAnswerWebModel(
>(Long) null)));
>add(new RequiredTextField("question"));
>add(new DropDownChoice("type",
> Arrays.asList(WebControlType
>.values(;
>}
>
>@Override
>public void onSubmit() {
>QuestionAndAnswer qanda = (QuestionAndAnswer)
> getModel()
>.getObject();
>
>template.addQuestion(qanda);
>
> WicketApplication.get().getTemplateFactory().store(template);
>setResponsePage(new TemplateEditPage(new
> TemplateWebModel(template)));
>}
>}
>
>private class QuestionEditForm extends Form {
>private Template template;
>
>public QuestionEditForm(String id, TemplateWebModel
> templatemodel) {
>super(id);
>template = (Template) templatemodel.getObject();
>ListView questionlist = new ListView("questions",
> template
>.getQuestions()) {
>@Override
>protected void populateItem(ListItem item) {
>System.out.println("+++"
>+
> item.getModelObject().getClass().getName());
>final QuestionAndAnswer qanda =
> (QuestionAndAnswer) item
>.getModelObject();
>setModel(new
> CompoundPropertyModel(qanda));
>item.add(new
> RequiredTextField("question"));
>item.add(new DropDownChoice("type",
> Arrays
>
> .asList(WebControlType.values(;
>
Re: ListView broken?
Ok, I might be doing something thats not ok but . there are not
two ListViews on this page (there are 3 forms? Is this a problem?)
ClassCastException is throw at System.out.println("")
package com.musmato.wicket.pages.templates;
import java.util.Arrays;
import org.apache.wicket.markup.html.form.DropDownChoice;
import org.apache.wicket.markup.html.form.Form;
import org.apache.wicket.markup.html.form.RequiredTextField;
import org.apache.wicket.markup.html.form.TextArea;
import org.apache.wicket.markup.html.link.Link;
import org.apache.wicket.markup.html.list.ListItem;
import org.apache.wicket.markup.html.list.ListView;
import org.apache.wicket.model.CompoundPropertyModel;
import com.musmato.model.QuestionAndAnswer;
import com.musmato.model.Role;
import com.musmato.model.Template;
import com.musmato.model.WebControlType;
import com.musmato.wicket.model.QuestionAndAnswerWebModel;
import com.musmato.wicket.model.TemplateWebModel;
import com.musmato.wicket.pages.AuthPage;
import com.musmato.wicket.util.WicketApplication;
public class TemplateEditPage extends AuthPage {
public TemplateEditPage(TemplateWebModel templatemodel) {
add(new TemplateEditForm("templateeditform", templatemodel));
add(new QuestionAddForm("questionaddform", templatemodel));
add(new QuestionEditForm("questioneditform", templatemodel));
}
@Override
public Role[] getAllowedRoles() {
// TODO Auto-generated method stub
return null;
}
private class TemplateEditForm extends Form {
private final Template template;
public TemplateEditForm(String id, TemplateWebModel
templatemodel) {
super(id);
template = (Template) templatemodel.getObject();
setModel(new CompoundPropertyModel(templatemodel));
add(new RequiredTextField("name"));
add(new RequiredTextField("version"));
add(new TextArea("description"));
}
@Override
public void onSubmit() {
WicketApplication.get().getTemplateFactory().store(template);
setResponsePage(new TemplateEditPage(new
TemplateWebModel(template)));
}
}
private class QuestionAddForm extends Form {
private final Template template;
public QuestionAddForm(String id, TemplateWebModel
templatemodel) {
super(id);
template = (Template) templatemodel.getObject();
setModel(new CompoundPropertyModel(new
QuestionAndAnswerWebModel(
(Long) null)));
add(new RequiredTextField("question"));
add(new DropDownChoice("type",
Arrays.asList(WebControlType
.values(;
}
@Override
public void onSubmit() {
QuestionAndAnswer qanda = (QuestionAndAnswer) getModel()
.getObject();
template.addQuestion(qanda);
WicketApplication.get().getTemplateFactory().store(template);
setResponsePage(new TemplateEditPage(new
TemplateWebModel(template)));
}
}
private class QuestionEditForm extends Form {
private Template template;
public QuestionEditForm(String id, TemplateWebModel
templatemodel) {
super(id);
template = (Template) templatemodel.getObject();
ListView questionlist = new ListView("questions",
template
.getQuestions()) {
@Override
protected void populateItem(ListItem item) {
System.out.println("+++"
+
item.getModelObject().getClass().getName());
final QuestionAndAnswer qanda =
(QuestionAndAnswer) item
.getModelObject();
setModel(new
CompoundPropertyModel(qanda));
item.add(new
RequiredTextField("question"));
item.add(new DropDownChoice("type",
Arrays
.asList(WebControlType.values(;
item.add(new Link("delete") {
@Override
public void onClick() {
Re: ListView broken?
The classcastexception happens on retrieving the N-th item from the
list. The class cast tries to cast the model object of the listview to
a List. Apparently the argument to the listview is not a List, but
somethign that returns a QuestionAndAnswer.
Are you looking at the correct ListView (i.e. are there more ListView
s on your page)?
Martijn
On Thu, Oct 23, 2008 at 11:55 AM, Dipu <[EMAIL PROTECTED]> wrote:
> pass , sorry i have no clue
>
> On Thu, Oct 23, 2008 at 10:37 AM, pieter claassen <[EMAIL PROTECTED]>wrote:
>
>> Ok, I added;
>>
>> public class Debug {
>>public static void debug(List list) {
>>for (Object item : list) {
>>System.out.println("++DEBUG++: " +
>> item.getClass().toString());
>>}
>>}
>>
>>
>> and called debug just before I returned my ArrayList of question:
>>
>>public ArrayList getQuestions() {
>>Debug.debug(questions);
>>return questions;
>>}
>>
>> This is what I saw in my console. There are two objects in the list and
>> they are both QuestionAndAnswer objects
>>
>>
>> ++DEBUG++: class com.musmato.model.QuestionAndAnswer
>> ++DEBUG++: class com.musmato.model.QuestionAndAnswer
>>
>> Regards,
>> Pieter
>>
>>
>> On Oct 23, 2008, at 11:18 AM, Dipu wrote:
>>
>> can't you check what exactly is being returned by template.getQuestions()
>>> and if its a list what are the items in it
>>>
>>>
>>>
>>>
>>> On Thu, Oct 23, 2008 at 10:10 AM, pieter claassen <[EMAIL PROTECTED]
>>> >wrote:
>>>
>>> Hi Dipu,
I tried that but when I do the following:
protected void populateItem(ListItem item) {
System.out.println("+++" +
item.getModelObject().getClass().getName());
final QuestionAndAnswer qanda = (QuestionAndAnswer)
item.getModelObject();
I find that I now get the ClassCastException in the System.out.println
line. It is clear as mud that the problem is that I am trying to force
something into a list which is not a list?
Regards,
Pieter
On Oct 23, 2008, at 10:59 AM, Dipu wrote:
looks like template.getQuestions() is returning a list with items in it
> which is not of the type QuestionAndAnswer
>
> try iterating through the list and logging the class name of each item
> in
> it
>
> Dipu
>
>
>
> On Thu, Oct 23, 2008 at 9:46 AM, pieter claassen <[EMAIL PROTECTED]
>
>> wrote:
>>
>
> I am getting a classcast exception in ListView that is stumping me.
>
>>
>> This is the error message (top few lines)
>>
>> WicketMessage: Error attaching this container for rendering:
>> [MarkupContainer [Component id = questioneditform]]
>>
>> Root cause:
>>
>> java.lang.ClassCastException: com.musmato.model.QuestionAndAnswer
>> at
>>
>>
>> org.apache.wicket.markup.html.list.ListItemModel.getObject(ListItemModel.java:55)
>> at org.apache.wicket.Component.getModelObject(Component.java:1558)
>> at
>>
>>
>> com.musmato.wicket.pages.templates.TemplateEditPage$QuestionEditForm$1.populateItem(TemplateEditPage.java:93)
>>
>>
>> This is the code that generates my ListItems:
>>
>>ListView questions = new ListView("questions",
>> template
>>.getQuestions()) {
>>
>>
>>@Override
>>protected void populateItem(ListItem item) {
>>final QuestionAndAnswer qanda =
>> (QuestionAndAnswer) item
>>.getModelObject();
>>setModel(new
>> CompoundPropertyModel(qanda));
>>
>>
>>
>> I know for a fact that template.getQuestions() produces an ArrayList.
>>
>> The arraylist works when there is only 1 item in it but when I have
>> more
>> than 1 item, it fails with the ClassCastException. Is this a wicket
>> problem
>> or am I doing something wrong?
>>
>> Regards,
>> Pieter
>> pieter claassen
>> [EMAIL PROTECTED]
>>
>>
>>
>>
>> -
>> To unsubscribe, e-mail: [EMAIL PROTECTED]
>> For additional commands, e-mail: [EMAIL PROTECTED]
>>
>>
>>
>> pieter claassen
[EMAIL PROTECTED]
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
>> pieter claassen
>> [EMAIL PROTECTED]
>>
>>
>>
>>
>> -
>> To unsubscribe, e-mail: [EMAIL PROTECTED]
>> For additional
Re: ListView broken?
pass , sorry i have no clue
On Thu, Oct 23, 2008 at 10:37 AM, pieter claassen <[EMAIL PROTECTED]>wrote:
> Ok, I added;
>
> public class Debug {
>public static void debug(List list) {
>for (Object item : list) {
>System.out.println("++DEBUG++: " +
> item.getClass().toString());
>}
>}
>
>
> and called debug just before I returned my ArrayList of question:
>
>public ArrayList getQuestions() {
>Debug.debug(questions);
>return questions;
>}
>
> This is what I saw in my console. There are two objects in the list and
> they are both QuestionAndAnswer objects
>
>
> ++DEBUG++: class com.musmato.model.QuestionAndAnswer
> ++DEBUG++: class com.musmato.model.QuestionAndAnswer
>
> Regards,
> Pieter
>
>
> On Oct 23, 2008, at 11:18 AM, Dipu wrote:
>
> can't you check what exactly is being returned by template.getQuestions()
>> and if its a list what are the items in it
>>
>>
>>
>>
>> On Thu, Oct 23, 2008 at 10:10 AM, pieter claassen <[EMAIL PROTECTED]
>> >wrote:
>>
>> Hi Dipu,
>>>
>>> I tried that but when I do the following:
>>>
>>> protected void populateItem(ListItem item) {
>>> System.out.println("+++" +
>>> item.getModelObject().getClass().getName());
>>> final QuestionAndAnswer qanda = (QuestionAndAnswer)
>>> item.getModelObject();
>>>
>>> I find that I now get the ClassCastException in the System.out.println
>>> line. It is clear as mud that the problem is that I am trying to force
>>> something into a list which is not a list?
>>>
>>> Regards,
>>> Pieter
>>>
>>>
>>>
>>> On Oct 23, 2008, at 10:59 AM, Dipu wrote:
>>>
>>> looks like template.getQuestions() is returning a list with items in it
>>>
which is not of the type QuestionAndAnswer
try iterating through the list and logging the class name of each item
in
it
Dipu
On Thu, Oct 23, 2008 at 9:46 AM, pieter claassen <[EMAIL PROTECTED]
> wrote:
>
I am getting a classcast exception in ListView that is stumping me.
>
> This is the error message (top few lines)
>
> WicketMessage: Error attaching this container for rendering:
> [MarkupContainer [Component id = questioneditform]]
>
> Root cause:
>
> java.lang.ClassCastException: com.musmato.model.QuestionAndAnswer
> at
>
>
> org.apache.wicket.markup.html.list.ListItemModel.getObject(ListItemModel.java:55)
> at org.apache.wicket.Component.getModelObject(Component.java:1558)
> at
>
>
> com.musmato.wicket.pages.templates.TemplateEditPage$QuestionEditForm$1.populateItem(TemplateEditPage.java:93)
>
>
> This is the code that generates my ListItems:
>
>ListView questions = new ListView("questions",
> template
>.getQuestions()) {
>
>
>@Override
>protected void populateItem(ListItem item) {
>final QuestionAndAnswer qanda =
> (QuestionAndAnswer) item
>.getModelObject();
>setModel(new
> CompoundPropertyModel(qanda));
>
>
>
> I know for a fact that template.getQuestions() produces an ArrayList.
>
> The arraylist works when there is only 1 item in it but when I have
> more
> than 1 item, it fails with the ClassCastException. Is this a wicket
> problem
> or am I doing something wrong?
>
> Regards,
> Pieter
> pieter claassen
> [EMAIL PROTECTED]
>
>
>
>
> -
> To unsubscribe, e-mail: [EMAIL PROTECTED]
> For additional commands, e-mail: [EMAIL PROTECTED]
>
>
>
> pieter claassen
>>> [EMAIL PROTECTED]
>>>
>>>
>>>
>>>
>>> -
>>> To unsubscribe, e-mail: [EMAIL PROTECTED]
>>> For additional commands, e-mail: [EMAIL PROTECTED]
>>>
>>>
>>>
> pieter claassen
> [EMAIL PROTECTED]
>
>
>
>
> -
> To unsubscribe, e-mail: [EMAIL PROTECTED]
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Re: ListView broken?
Ok, I added;
public class Debug {
public static void debug(List list) {
for (Object item : list) {
System.out.println("++DEBUG++: " +
item.getClass().toString());
}
}
and called debug just before I returned my ArrayList of question:
public ArrayList getQuestions() {
Debug.debug(questions);
return questions;
}
This is what I saw in my console. There are two objects in the list
and they are both QuestionAndAnswer objects
++DEBUG++: class com.musmato.model.QuestionAndAnswer
++DEBUG++: class com.musmato.model.QuestionAndAnswer
Regards,
Pieter
On Oct 23, 2008, at 11:18 AM, Dipu wrote:
can't you check what exactly is being returned by
template.getQuestions()
and if its a list what are the items in it
On Thu, Oct 23, 2008 at 10:10 AM, pieter claassen <[EMAIL PROTECTED]
>wrote:
Hi Dipu,
I tried that but when I do the following:
protected void populateItem(ListItem item) {
System.out.println("+++" +
item.getModelObject().getClass().getName());
final QuestionAndAnswer qanda =
(QuestionAndAnswer)
item.getModelObject();
I find that I now get the ClassCastException in the
System.out.println
line. It is clear as mud that the problem is that I am trying to
force
something into a list which is not a list?
Regards,
Pieter
On Oct 23, 2008, at 10:59 AM, Dipu wrote:
looks like template.getQuestions() is returning a list with items
in it
which is not of the type QuestionAndAnswer
try iterating through the list and logging the class name of each
item in
it
Dipu
On Thu, Oct 23, 2008 at 9:46 AM, pieter claassen <[EMAIL PROTECTED]
wrote:
I am getting a classcast exception in ListView that is stumping me.
This is the error message (top few lines)
WicketMessage: Error attaching this container for rendering:
[MarkupContainer [Component id = questioneditform]]
Root cause:
java.lang.ClassCastException: com.musmato.model.QuestionAndAnswer
at
org
.apache
.wicket
.markup.html.list.ListItemModel.getObject(ListItemModel.java:55)
at org.apache.wicket.Component.getModelObject(Component.java:1558)
at
com.musmato.wicket.pages.templates.TemplateEditPage
$QuestionEditForm$1.populateItem(TemplateEditPage.java:93)
This is the code that generates my ListItems:
ListView questions = new ListView("questions",
template
.getQuestions()) {
@Override
protected void populateItem(ListItem
item) {
final QuestionAndAnswer qanda =
(QuestionAndAnswer) item
.getModelObject
();
setModel(new
CompoundPropertyModel(qanda));
I know for a fact that template.getQuestions() produces an
ArrayList.
The arraylist works when there is only 1 item in it but when I
have more
than 1 item, it fails with the ClassCastException. Is this a wicket
problem
or am I doing something wrong?
Regards,
Pieter
pieter claassen
[EMAIL PROTECTED]
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
pieter claassen
[EMAIL PROTECTED]
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
pieter claassen
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Re: ListView broken?
can't you check what exactly is being returned by template.getQuestions()
and if its a list what are the items in it
On Thu, Oct 23, 2008 at 10:10 AM, pieter claassen <[EMAIL PROTECTED]>wrote:
> Hi Dipu,
>
> I tried that but when I do the following:
>
>protected void populateItem(ListItem item) {
>System.out.println("+++" +
> item.getModelObject().getClass().getName());
>final QuestionAndAnswer qanda = (QuestionAndAnswer)
> item.getModelObject();
>
> I find that I now get the ClassCastException in the System.out.println
> line. It is clear as mud that the problem is that I am trying to force
> something into a list which is not a list?
>
> Regards,
> Pieter
>
>
>
> On Oct 23, 2008, at 10:59 AM, Dipu wrote:
>
> looks like template.getQuestions() is returning a list with items in it
>> which is not of the type QuestionAndAnswer
>>
>> try iterating through the list and logging the class name of each item in
>> it
>>
>> Dipu
>>
>>
>>
>> On Thu, Oct 23, 2008 at 9:46 AM, pieter claassen <[EMAIL PROTECTED]
>> >wrote:
>>
>> I am getting a classcast exception in ListView that is stumping me.
>>>
>>> This is the error message (top few lines)
>>>
>>> WicketMessage: Error attaching this container for rendering:
>>> [MarkupContainer [Component id = questioneditform]]
>>>
>>> Root cause:
>>>
>>> java.lang.ClassCastException: com.musmato.model.QuestionAndAnswer
>>> at
>>>
>>> org.apache.wicket.markup.html.list.ListItemModel.getObject(ListItemModel.java:55)
>>> at org.apache.wicket.Component.getModelObject(Component.java:1558)
>>> at
>>>
>>> com.musmato.wicket.pages.templates.TemplateEditPage$QuestionEditForm$1.populateItem(TemplateEditPage.java:93)
>>>
>>>
>>> This is the code that generates my ListItems:
>>>
>>> ListView questions = new ListView("questions",
>>> template
>>> .getQuestions()) {
>>>
>>>
>>> @Override
>>> protected void populateItem(ListItem item) {
>>> final QuestionAndAnswer qanda =
>>> (QuestionAndAnswer) item
>>> .getModelObject();
>>> setModel(new
>>> CompoundPropertyModel(qanda));
>>>
>>>
>>>
>>> I know for a fact that template.getQuestions() produces an ArrayList.
>>>
>>> The arraylist works when there is only 1 item in it but when I have more
>>> than 1 item, it fails with the ClassCastException. Is this a wicket
>>> problem
>>> or am I doing something wrong?
>>>
>>> Regards,
>>> Pieter
>>> pieter claassen
>>> [EMAIL PROTECTED]
>>>
>>>
>>>
>>>
>>> -
>>> To unsubscribe, e-mail: [EMAIL PROTECTED]
>>> For additional commands, e-mail: [EMAIL PROTECTED]
>>>
>>>
>>>
> pieter claassen
> [EMAIL PROTECTED]
>
>
>
>
> -
> To unsubscribe, e-mail: [EMAIL PROTECTED]
> For additional commands, e-mail: [EMAIL PROTECTED]
>
>
Re: ListView broken?
Hi Dipu,
I tried that but when I do the following:
protected void populateItem(ListItem item) {
System.out.println("+++" +
item.getModelObject().getClass().getName());
final QuestionAndAnswer qanda = (QuestionAndAnswer)
item.getModelObject();
I find that I now get the ClassCastException in the System.out.println
line. It is clear as mud that the problem is that I am trying to force
something into a list which is not a list?
Regards,
Pieter
On Oct 23, 2008, at 10:59 AM, Dipu wrote:
looks like template.getQuestions() is returning a list with items
in it
which is not of the type QuestionAndAnswer
try iterating through the list and logging the class name of each
item in it
Dipu
On Thu, Oct 23, 2008 at 9:46 AM, pieter claassen <[EMAIL PROTECTED]
>wrote:
I am getting a classcast exception in ListView that is stumping me.
This is the error message (top few lines)
WicketMessage: Error attaching this container for rendering:
[MarkupContainer [Component id = questioneditform]]
Root cause:
java.lang.ClassCastException: com.musmato.model.QuestionAndAnswer
at
org
.apache
.wicket.markup.html.list.ListItemModel.getObject(ListItemModel.java:
55)
at org.apache.wicket.Component.getModelObject(Component.java:1558)
at
com.musmato.wicket.pages.templates.TemplateEditPage$QuestionEditForm
$1.populateItem(TemplateEditPage.java:93)
This is the code that generates my ListItems:
ListView questions = new ListView("questions",
template
.getQuestions()) {
@Override
protected void populateItem(ListItem
item) {
final QuestionAndAnswer qanda =
(QuestionAndAnswer) item
.getModelObject
();
setModel(new
CompoundPropertyModel(qanda));
I know for a fact that template.getQuestions() produces an ArrayList.
The arraylist works when there is only 1 item in it but when I have
more
than 1 item, it fails with the ClassCastException. Is this a wicket
problem
or am I doing something wrong?
Regards,
Pieter
pieter claassen
[EMAIL PROTECTED]
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
pieter claassen
[EMAIL PROTECTED]
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
Re: ListView broken?
Comments inline:
On Oct 23, 2008, at 10:59 AM, Serkan Camurcuoglu wrote:
it seems like template.getQuestions() returns a model which has a
QuestionAndAnswer instance instead of a list as its model object..
This is the code in template that returns an arraylist.
public ArrayList getQuestions() {
return questions;
}
Is this correct?
P
The code
on the line where the exception is thrown is:
return ((List)listView.getModelObject()).get(index);
which indicates that your problem is trying to cast a
QuestionAndAnswer
instance to a List. Everyone is using ListView and it cannot be
broken this
way :)
Pieter Claassen wrote:
I am getting a classcast exception in ListView that is stumping me.
This is the error message (top few lines)
WicketMessage: Error attaching this container for rendering:
[MarkupContainer [Component id = questioneditform]]
Root cause:
java.lang.ClassCastException: com.musmato.model.QuestionAndAnswer
at
org
.apache
.wicket.markup.html.list.ListItemModel.getObject(ListItemModel.java:
55)
at org.apache.wicket.Component.getModelObject(Component.java:1558)
at com.musmato.wicket.pages.templates.TemplateEditPage
$QuestionEditForm
$1.populateItem(TemplateEditPage.java:93)
This is the code that generates my ListItems:
ListView questions = new ListView("questions", template
.getQuestions()) {
@Override
protected void populateItem(ListItem item) {
final QuestionAndAnswer qanda =
(QuestionAndAnswer) item
.getModelObject();
setModel(new
CompoundPropertyModel(qanda));
I know for a fact that template.getQuestions() produces an ArrayList.
The arraylist works when there is only 1 item in it but when I have
more than 1 item, it fails with the ClassCastException. Is this a
wicket problem or am I doing something wrong?
Regards,
Pieter
pieter claassen
[EMAIL PROTECTED]
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
--
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http://www.nabble.com/ListView-broken--tp20126952p20127126.html
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pieter claassen
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Re: ListView broken?
it seems like template.getQuestions() returns a model which has a
QuestionAndAnswer instance instead of a list as its model object.. The code
on the line where the exception is thrown is:
return ((List)listView.getModelObject()).get(index);
which indicates that your problem is trying to cast a QuestionAndAnswer
instance to a List. Everyone is using ListView and it cannot be broken this
way :)
Pieter Claassen wrote:
>
> I am getting a classcast exception in ListView that is stumping me.
>
> This is the error message (top few lines)
>
> WicketMessage: Error attaching this container for rendering:
> [MarkupContainer [Component id = questioneditform]]
>
> Root cause:
>
> java.lang.ClassCastException: com.musmato.model.QuestionAndAnswer
> at
> org
> .apache
> .wicket.markup.html.list.ListItemModel.getObject(ListItemModel.java:55)
> at org.apache.wicket.Component.getModelObject(Component.java:1558)
> at com.musmato.wicket.pages.templates.TemplateEditPage$QuestionEditForm
> $1.populateItem(TemplateEditPage.java:93)
>
>
> This is the code that generates my ListItems:
>
> ListView questions = new ListView("questions", template
> .getQuestions()) {
>
>
> @Override
> protected void populateItem(ListItem item) {
> final QuestionAndAnswer qanda =
> (QuestionAndAnswer) item
> .getModelObject();
> setModel(new
> CompoundPropertyModel(qanda));
>
>
>
> I know for a fact that template.getQuestions() produces an ArrayList.
>
> The arraylist works when there is only 1 item in it but when I have
> more than 1 item, it fails with the ClassCastException. Is this a
> wicket problem or am I doing something wrong?
>
> Regards,
> Pieter
> pieter claassen
> [EMAIL PROTECTED]
>
>
>
>
> -
> To unsubscribe, e-mail: [EMAIL PROTECTED]
> For additional commands, e-mail: [EMAIL PROTECTED]
>
>
>
--
View this message in context:
http://www.nabble.com/ListView-broken--tp20126952p20127126.html
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Re: ListView broken?
looks like template.getQuestions() is returning a list with items in it
which is not of the type QuestionAndAnswer
try iterating through the list and logging the class name of each item in it
Dipu
On Thu, Oct 23, 2008 at 9:46 AM, pieter claassen <[EMAIL PROTECTED]>wrote:
> I am getting a classcast exception in ListView that is stumping me.
>
> This is the error message (top few lines)
>
> WicketMessage: Error attaching this container for rendering:
> [MarkupContainer [Component id = questioneditform]]
>
> Root cause:
>
> java.lang.ClassCastException: com.musmato.model.QuestionAndAnswer
> at
> org.apache.wicket.markup.html.list.ListItemModel.getObject(ListItemModel.java:55)
> at org.apache.wicket.Component.getModelObject(Component.java:1558)
> at
> com.musmato.wicket.pages.templates.TemplateEditPage$QuestionEditForm$1.populateItem(TemplateEditPage.java:93)
>
>
> This is the code that generates my ListItems:
>
>ListView questions = new ListView("questions",
> template
>.getQuestions()) {
>
>
>@Override
>protected void populateItem(ListItem item) {
>final QuestionAndAnswer qanda =
> (QuestionAndAnswer) item
>.getModelObject();
>setModel(new
> CompoundPropertyModel(qanda));
>
>
>
> I know for a fact that template.getQuestions() produces an ArrayList.
>
> The arraylist works when there is only 1 item in it but when I have more
> than 1 item, it fails with the ClassCastException. Is this a wicket problem
> or am I doing something wrong?
>
> Regards,
> Pieter
> pieter claassen
> [EMAIL PROTECTED]
>
>
>
>
> -
> To unsubscribe, e-mail: [EMAIL PROTECTED]
> For additional commands, e-mail: [EMAIL PROTECTED]
>
>
ListView broken?
I am getting a classcast exception in ListView that is stumping me.
This is the error message (top few lines)
WicketMessage: Error attaching this container for rendering:
[MarkupContainer [Component id = questioneditform]]
Root cause:
java.lang.ClassCastException: com.musmato.model.QuestionAndAnswer
at
org
.apache
.wicket.markup.html.list.ListItemModel.getObject(ListItemModel.java:55)
at org.apache.wicket.Component.getModelObject(Component.java:1558)
at com.musmato.wicket.pages.templates.TemplateEditPage$QuestionEditForm
$1.populateItem(TemplateEditPage.java:93)
This is the code that generates my ListItems:
ListView questions = new ListView("questions", template
.getQuestions()) {
@Override
protected void populateItem(ListItem item) {
final QuestionAndAnswer qanda =
(QuestionAndAnswer) item
.getModelObject();
setModel(new
CompoundPropertyModel(qanda));
I know for a fact that template.getQuestions() produces an ArrayList.
The arraylist works when there is only 1 item in it but when I have
more than 1 item, it fails with the ClassCastException. Is this a
wicket problem or am I doing something wrong?
Regards,
Pieter
pieter claassen
[EMAIL PROTECTED]
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
