Memory leak when Un-deploying processes that contain XSL stylesheets
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Key: ODE-574
URL: https://issues.apache.org/jira/browse/ODE-574
Project: ODE
Issue Type: Bug
Components: BPEL Compilation/Parsing, BPEL Runtime
Environment: N/A
Reporter: Ciaran Jessup
Currently if the BPEL process contains any XSL stylesheets it will not free up
*all* the memory that was allocated during the compilation/dehydration of the
process. This seems to be because there is a cache of XSLTemplates stored in
the XSLTransformHandler, and these XSLTemplates can sometimes contain
(transitive) references back to the OProcess object instances (via for example
the URIResolvers/XPAth Expressions). Unfortunately this cache lives forever
(crucially even after the process has been un-deployed) because of this the
object graph hanging from the OProcess object instance is never available for
the GC to pick-off.
There is also another reference issue in the ErrorListener that is associated
with the XSLTransformHandler instance, but I don't really understand that bit
of code just as yet, a patch for the former issue follows, I'm reviewing the
ErrorListener issue currently.
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