Exceptions from Error Listener Are Ignored
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Key: XALANJ-2262
URL: http://issues.apache.org/jira/browse/XALANJ-2262
Project: XalanJ2
Type: Bug
Components: XSLTC
Versions: 2.7
Environment: Windows XP, Sun JDK 1.4.2
Reporter: D Gardner
In interpretive Xalan, exceptions thrown from the error listener configured
using the Transformer.setErrorListener() method are reported as fatal
errors and processing stops. In XSLTC, these exceptions are simply
swallowed up.
I have a stylesheet that is used to "validate" an XML file. When a validation
error is detected, xsl:message is used to report the error. The error is
passed to a cusom error listener as a warning, but the warning() method
will throw an exception to indicate that the XML file has failed a validation.
Xalan will see this exception, pass it to ErrorListener.fatalError() and then
terminate, but XSLTC just ignores the exception (see the "displayMessage()"
method in the an inner class of: org.apache.xalan.xsltc.trax.TransformerImpl.
According to the TRAX API documentation for javax.xml.transform.ErrorListener,
it is up to the application to decide if processing should continue when a
warning is reported. Processing should terminate if the "warning()" method
throws an exception but continue if it does not throw an exception. As XSLTC
always continues and ignores the exception, it does not conform to the TRAX
API.
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