About the quickest way I know to take the joy out of Cocoon Portal design is
when you miskey a definition and get a 33-page stack trace back which will
tell you everything but what really caused the error.
The Cocoon portal code throws an exception if you do this, but the message
text is lost as it percolates back up through Castor and SAX. Presumably a
future release of Castor will address this, but in the mean time a little
assistance is in order.
Here's a small mod to the CopletInstanceDataReferenceFieldHandler that will
output a message to sysout:
public void setValue(Object object, Object value) {
CopletInstanceData copletInstanceData =
(CopletInstanceData)getObjectMap().get(value);
if (copletInstanceData == null) {
final String missingLink = "Referenced <coplet-instance-data>
item \""+
value+
"\" is not defined in the coplet instance data definitions
resource.";
System.out.println(missingLink);
throw new IllegalArgumentException(missingLink);
}
((CopletLayout)object).setCopletInstanceData(copletInstanceData);
}
Ideally this message should go out to the log, but that's beyond my
competence.
Similar treatments can properly be applied to the other modules that
reference across resources.
Hope this helps someone,
Tim
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