Christian Beikov created MYFACES-4028:
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Summary: Custom Taglib with composite components and JSTL
Key: MYFACES-4028
URL: https://issues.apache.org/jira/browse/MYFACES-4028
Project: MyFaces Core
Issue Type: Bug
Affects Versions: 2.2.9, 2.1.17
Reporter: Christian Beikov
I tested this on Wildfly 10.0.0.CR5 with both, MyFaces 2.1.17 and 2.2.9 but I
suppose this issue is not specific to my environment.
The example project can be found on Github:
https://github.com/beikov/myfaces-composite-jstl-issue
I think the essential problem is, that a composite component passes an EL
expression to a custom tag which then uses the expression in a JSTL Tag.
I don't know if it's just illegal to do something like this, or if there is an
actual bug, but if it is the former, I'd expect an exception.
Depending on whether the property
"org.apache.myfaces.REFRESH_TRANSIENT_BUILD_ON_PSS_PRESERVE_STATE" is enabled
the behavior is different.
When enabled, the converter that is attached to the composite component will be
considered for state saving which in this case leads to a converter without
state when restoring and finally leading to a converter exception on postback.
When disabled, the first postback request just seems to do nothing, but then,
it seemingly works as expected.
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