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Posted to dev@tapestry.apache.org by "Daniel Caldeweyher (JIRA)" <de...@tapestry.apache.org> on 2008/10/23 08:26:44 UTC
[jira] Created: (TAPESTRY-2714) NPE during
DojoAjaxResponseBuilder.beginResponse after async submit after "back"
button
NPE during DojoAjaxResponseBuilder.beginResponse after async submit after "back" button
---------------------------------------------------------------------------------------
Key: TAPESTRY-2714
URL: https://issues.apache.org/jira/browse/TAPESTRY-2714
Project: Tapestry
Issue Type: Bug
Affects Versions: 4.1.6, 4.1.5
Reporter: Daniel Caldeweyher
Hi,
we are getting a NPE during form rewind after using the back button back to a page that contains a @PropertySelection with an async onchange @EventListener. If this event listener is triggered, the _writer inside the DojoAjaxResponseBuilder is null, causing an NPE. It works correctly if the page is accessed normally, ie. not via back button.
Should beginResponse even be called during rewind?
Also, if the methods in DojoAjaxResponseBuilder were using getWriter() instead of _writer directly. this could be fixed by replacing
public IMarkupWriter getWriter()
{
return _writer;
}
with
public IMarkupWriter getWriter()
{
if(_writer == null)
{
return NullWriter.getSharedInstance();
}
return _writer;
}
here is the stacktrace:
Caused by: java.lang.NullPointerException
at org.apache.tapestry.services.impl.DojoAjaxResponseBuilder.beginResponse(DojoAjaxResponseBuilder.java:696)
at org.apache.tapestry.services.impl.DojoAjaxResponseBuilder.getWriter(DojoAjaxResponseBuilder.java:665)
at org.apache.tapestry.services.impl.DojoAjaxResponseBuilder.getComponentWriter(DojoAjaxResponseBuilder.java:653)
at org.apache.tapestry.services.impl.DojoAjaxResponseBuilder.render(DojoAjaxResponseBuilder.java:629)
at org.apache.tapestry.AbstractComponent.renderBody(AbstractComponent.java:538)
at org.apache.tapestry.components.Any.renderComponent(Any.java:44)
at org.apache.tapestry.AbstractComponent.render(AbstractComponent.java:724)
at org.apache.tapestry.services.impl.DojoAjaxResponseBuilder.render(DojoAjaxResponseBuilder.java:635)
at org.apache.tapestry.AbstractComponent.renderBody(AbstractComponent.java:538)
at org.apache.tapestry.form.FormSupportImpl.rewind(FormSupportImpl.java:624)
at org.apache.tapestry.form.Form.renderComponent(Form.java:196)
at org.apache.tapestry.AbstractComponent.render(AbstractComponent.java:724)
at org.apache.tapestry.services.impl.DojoAjaxResponseBuilder.render(DojoAjaxResponseBuilder.java:635)
at org.apache.tapestry.form.Form.rewind(Form.java:269)
at org.apache.tapestry.engine.RequestCycle.rewindForm(RequestCycle.java:469)
... 40 more
we thought that maybe preventBackButtonFix: false might help, but it was not related.
Thanks,
Daniel
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[jira] Issue Comment Edited: (TAPESTRY-2714) NPE during
DojoAjaxResponseBuilder.beginResponse after async submit after "back"
button
Posted by "Daniel Caldeweyher (JIRA)" <de...@tapestry.apache.org>.
[ https://issues.apache.org/jira/browse/TAPESTRY-2714?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12642077#action_12642077 ]
dcalde edited comment on TAPESTRY-2714 at 10/22/08 11:33 PM:
-------------------------------------------------------------------------
This tapestry user appears to have the same problem:
http://www.nabble.com/issues-in-getting-IMarkupWriter-object-tt17103580.html
But his message never got a reply.
was (Author: dcalde):
This tapestry user appears to have the same problem:
http://markmail.org/message/wn4cqdd6zbc3325v
But his message never got a reply.
> NPE during DojoAjaxResponseBuilder.beginResponse after async submit after "back" button
> ---------------------------------------------------------------------------------------
>
> Key: TAPESTRY-2714
> URL: https://issues.apache.org/jira/browse/TAPESTRY-2714
> Project: Tapestry
> Issue Type: Bug
> Affects Versions: 4.1.5, 4.1.6
> Reporter: Daniel Caldeweyher
>
> Hi,
> we are getting a NPE during form rewind after using the back button back to a page that contains a @PropertySelection with an async onchange @EventListener. If this event listener is triggered, the _writer inside the DojoAjaxResponseBuilder is null, causing an NPE. It works correctly if the page is accessed normally, ie. not via back button.
> Should beginResponse even be called during rewind?
> Also, if the methods in DojoAjaxResponseBuilder were using getWriter() instead of _writer directly. this could be fixed by replacing
> public IMarkupWriter getWriter()
> {
> return _writer;
> }
> with
> public IMarkupWriter getWriter()
> {
> if(_writer == null)
> {
> return NullWriter.getSharedInstance();
> }
> return _writer;
> }
> here is the stacktrace:
> Caused by: java.lang.NullPointerException
> at org.apache.tapestry.services.impl.DojoAjaxResponseBuilder.beginResponse(DojoAjaxResponseBuilder.java:696)
> at org.apache.tapestry.services.impl.DojoAjaxResponseBuilder.getWriter(DojoAjaxResponseBuilder.java:665)
> at org.apache.tapestry.services.impl.DojoAjaxResponseBuilder.getComponentWriter(DojoAjaxResponseBuilder.java:653)
> at org.apache.tapestry.services.impl.DojoAjaxResponseBuilder.render(DojoAjaxResponseBuilder.java:629)
> at org.apache.tapestry.AbstractComponent.renderBody(AbstractComponent.java:538)
> at org.apache.tapestry.components.Any.renderComponent(Any.java:44)
> at org.apache.tapestry.AbstractComponent.render(AbstractComponent.java:724)
> at org.apache.tapestry.services.impl.DojoAjaxResponseBuilder.render(DojoAjaxResponseBuilder.java:635)
> at org.apache.tapestry.AbstractComponent.renderBody(AbstractComponent.java:538)
> at org.apache.tapestry.form.FormSupportImpl.rewind(FormSupportImpl.java:624)
> at org.apache.tapestry.form.Form.renderComponent(Form.java:196)
> at org.apache.tapestry.AbstractComponent.render(AbstractComponent.java:724)
> at org.apache.tapestry.services.impl.DojoAjaxResponseBuilder.render(DojoAjaxResponseBuilder.java:635)
> at org.apache.tapestry.form.Form.rewind(Form.java:269)
> at org.apache.tapestry.engine.RequestCycle.rewindForm(RequestCycle.java:469)
> ... 40 more
> we thought that maybe preventBackButtonFix: false might help, but it was not related.
> Thanks,
> Daniel
--
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-
You can reply to this email to add a comment to the issue online.
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[jira] Updated: (TAPESTRY-2714) NPE during
DojoAjaxResponseBuilder.beginResponse after async submit after "back"
button
Posted by "Daniel Caldeweyher (JIRA)" <de...@tapestry.apache.org>.
[ https://issues.apache.org/jira/browse/TAPESTRY-2714?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Daniel Caldeweyher updated TAPESTRY-2714:
-----------------------------------------
This tapestry user appears to have the problem:
http://markmail.org/message/wn4cqdd6zbc3325v
But his message never got a reply.
> NPE during DojoAjaxResponseBuilder.beginResponse after async submit after "back" button
> ---------------------------------------------------------------------------------------
>
> Key: TAPESTRY-2714
> URL: https://issues.apache.org/jira/browse/TAPESTRY-2714
> Project: Tapestry
> Issue Type: Bug
> Affects Versions: 4.1.5, 4.1.6
> Reporter: Daniel Caldeweyher
>
> Hi,
> we are getting a NPE during form rewind after using the back button back to a page that contains a @PropertySelection with an async onchange @EventListener. If this event listener is triggered, the _writer inside the DojoAjaxResponseBuilder is null, causing an NPE. It works correctly if the page is accessed normally, ie. not via back button.
> Should beginResponse even be called during rewind?
> Also, if the methods in DojoAjaxResponseBuilder were using getWriter() instead of _writer directly. this could be fixed by replacing
> public IMarkupWriter getWriter()
> {
> return _writer;
> }
> with
> public IMarkupWriter getWriter()
> {
> if(_writer == null)
> {
> return NullWriter.getSharedInstance();
> }
> return _writer;
> }
> here is the stacktrace:
> Caused by: java.lang.NullPointerException
> at org.apache.tapestry.services.impl.DojoAjaxResponseBuilder.beginResponse(DojoAjaxResponseBuilder.java:696)
> at org.apache.tapestry.services.impl.DojoAjaxResponseBuilder.getWriter(DojoAjaxResponseBuilder.java:665)
> at org.apache.tapestry.services.impl.DojoAjaxResponseBuilder.getComponentWriter(DojoAjaxResponseBuilder.java:653)
> at org.apache.tapestry.services.impl.DojoAjaxResponseBuilder.render(DojoAjaxResponseBuilder.java:629)
> at org.apache.tapestry.AbstractComponent.renderBody(AbstractComponent.java:538)
> at org.apache.tapestry.components.Any.renderComponent(Any.java:44)
> at org.apache.tapestry.AbstractComponent.render(AbstractComponent.java:724)
> at org.apache.tapestry.services.impl.DojoAjaxResponseBuilder.render(DojoAjaxResponseBuilder.java:635)
> at org.apache.tapestry.AbstractComponent.renderBody(AbstractComponent.java:538)
> at org.apache.tapestry.form.FormSupportImpl.rewind(FormSupportImpl.java:624)
> at org.apache.tapestry.form.Form.renderComponent(Form.java:196)
> at org.apache.tapestry.AbstractComponent.render(AbstractComponent.java:724)
> at org.apache.tapestry.services.impl.DojoAjaxResponseBuilder.render(DojoAjaxResponseBuilder.java:635)
> at org.apache.tapestry.form.Form.rewind(Form.java:269)
> at org.apache.tapestry.engine.RequestCycle.rewindForm(RequestCycle.java:469)
> ... 40 more
> we thought that maybe preventBackButtonFix: false might help, but it was not related.
> Thanks,
> Daniel
--
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[jira] Issue Comment Edited: (TAPESTRY-2714) NPE during
DojoAjaxResponseBuilder.beginResponse after async submit after "back"
button
Posted by "Daniel Caldeweyher (JIRA)" <de...@tapestry.apache.org>.
[ https://issues.apache.org/jira/browse/TAPESTRY-2714?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12642077#action_12642077 ]
dcalde edited comment on TAPESTRY-2714 at 10/22/08 11:31 PM:
-------------------------------------------------------------------------
This tapestry user appears to have the same problem:
http://markmail.org/message/wn4cqdd6zbc3325v
But his message never got a reply.
was (Author: dcalde):
This tapestry user appears to have the problem:
http://markmail.org/message/wn4cqdd6zbc3325v
But his message never got a reply.
> NPE during DojoAjaxResponseBuilder.beginResponse after async submit after "back" button
> ---------------------------------------------------------------------------------------
>
> Key: TAPESTRY-2714
> URL: https://issues.apache.org/jira/browse/TAPESTRY-2714
> Project: Tapestry
> Issue Type: Bug
> Affects Versions: 4.1.5, 4.1.6
> Reporter: Daniel Caldeweyher
>
> Hi,
> we are getting a NPE during form rewind after using the back button back to a page that contains a @PropertySelection with an async onchange @EventListener. If this event listener is triggered, the _writer inside the DojoAjaxResponseBuilder is null, causing an NPE. It works correctly if the page is accessed normally, ie. not via back button.
> Should beginResponse even be called during rewind?
> Also, if the methods in DojoAjaxResponseBuilder were using getWriter() instead of _writer directly. this could be fixed by replacing
> public IMarkupWriter getWriter()
> {
> return _writer;
> }
> with
> public IMarkupWriter getWriter()
> {
> if(_writer == null)
> {
> return NullWriter.getSharedInstance();
> }
> return _writer;
> }
> here is the stacktrace:
> Caused by: java.lang.NullPointerException
> at org.apache.tapestry.services.impl.DojoAjaxResponseBuilder.beginResponse(DojoAjaxResponseBuilder.java:696)
> at org.apache.tapestry.services.impl.DojoAjaxResponseBuilder.getWriter(DojoAjaxResponseBuilder.java:665)
> at org.apache.tapestry.services.impl.DojoAjaxResponseBuilder.getComponentWriter(DojoAjaxResponseBuilder.java:653)
> at org.apache.tapestry.services.impl.DojoAjaxResponseBuilder.render(DojoAjaxResponseBuilder.java:629)
> at org.apache.tapestry.AbstractComponent.renderBody(AbstractComponent.java:538)
> at org.apache.tapestry.components.Any.renderComponent(Any.java:44)
> at org.apache.tapestry.AbstractComponent.render(AbstractComponent.java:724)
> at org.apache.tapestry.services.impl.DojoAjaxResponseBuilder.render(DojoAjaxResponseBuilder.java:635)
> at org.apache.tapestry.AbstractComponent.renderBody(AbstractComponent.java:538)
> at org.apache.tapestry.form.FormSupportImpl.rewind(FormSupportImpl.java:624)
> at org.apache.tapestry.form.Form.renderComponent(Form.java:196)
> at org.apache.tapestry.AbstractComponent.render(AbstractComponent.java:724)
> at org.apache.tapestry.services.impl.DojoAjaxResponseBuilder.render(DojoAjaxResponseBuilder.java:635)
> at org.apache.tapestry.form.Form.rewind(Form.java:269)
> at org.apache.tapestry.engine.RequestCycle.rewindForm(RequestCycle.java:469)
> ... 40 more
> we thought that maybe preventBackButtonFix: false might help, but it was not related.
> Thanks,
> Daniel
--
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You can reply to this email to add a comment to the issue online.
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