preserveDataModel=true throws ClassCastException (with Trinidad)
----------------------------------------------------------------
Key: TOMAHAWK-1035
URL: https://issues.apache.org/jira/browse/TOMAHAWK-1035
Project: MyFaces Tomahawk
Issue Type: Bug
Components: Extended Datatable
Environment: jboss-4.2.0.GA, windows XP
Reporter: Leonardo Uribe
When you have a datatable with preserveDataModel=true, it throws
ClassClastException when you use commandSortHeader and try to sort
the data (click it twice).
I believe that the problem is that trinidad use a cache mechanism in its
StateManager implementation. When you load first, it works well, but
when I click the sort header, throws the error, In the navigator, if I click
back, and try again the error is not thrown.
The component assume that the method restoreState is called(and the Serialized
model is restored) when there is a request, but this is not
true for trinidad StateManager Impl (If the tree exists trinidad takes it).
Solution: instead this line in method saveState of class
org.apache.myfaces.component.html.ext.HtmlDataTable
if (isPreserveDataModel())
{
values[2] = saveAttachedState(context,
getSerializableDataModel());
}
add these lines
if (isPreserveDataModel())
{
_preservedDataModel = getSerializableDataModel();
values[2] = saveAttachedState(context, _preservedDataModel);
}
It's the same but note that when the method getDataModel() is called again, it
checks _preservedDataModel, and
the model is restored.
I have probe this with and without trinidad (using myfaces tomahawk examples
simple project) and works
without problems
I found a similar issue to this in TOMAHAWK-241, but in this issue I have not
found anything about the environment
when the error is thrown.
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
