Christopher Meyer created MYFACES-3988:
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Summary: An empty tag in a custom tag-lib causes an Exception
Key: MYFACES-3988
URL: https://issues.apache.org/jira/browse/MYFACES-3988
Project: MyFaces Core
Issue Type: Bug
Components: JSR-344
Affects Versions: 2.2.8
Reporter: Christopher Meyer
Priority: Minor
While developing a custom tag library we added an empty renderer-type tag like
this:
<tag>
<tag-name>myinput</tag-name>
<component>
<component-type>my.test.MyInput</component-type>
<renderer-type></renderer-type>
</component>
</tag>
This causes the following exception:
Caused by: java.lang.Exception: Value Cannot be Empty
at
org.apache.myfaces.view.facelets.compiler.TagLibraryConfigUnmarshallerImpl$LibraryHandler.endElement(TagLibraryConfigUnmarshallerImpl.java:395)
at org.apache.xerces.parsers.AbstractSAXParser.endElement(Unknown
Source)
at
org.apache.xerces.impl.XMLNSDocumentScannerImpl.scanEndElement(Unknown Source)
at
org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown
Source)
...
This appears to be expected based on the code in
TagLibraryConfigUnmarshallerImpl. From what I can see the exception appears to
be thrown on elements which are used in another spot. If any of them are empty
they will throw the above exception. Wildfly/Glassfish does not have the same
behavior, so my assumption is they just ignore it.
Should the MyFaces code be modified to just continue on without the exception,
based on the reference implementation? I can quickly create something if so, I
just wanted to bring this up to the community at large since I don't know the
reasoning behind the difference of the implementations.
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