add a working memory event listener using the JSR-94 API
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Key: DROOLS-426
URL: http://jira.codehaus.org/browse/DROOLS-426
Project: drools
Type: Improvement
Components: jsr94
Versions: future
Reporter: Adrian Bigland
Priority: Minor
Fix For: future
The JSR-94 API does not include a method for adding a debugger to the rule
session.
This leaves debugging to the vedor-specific properties/metadata that the API
exposes.
It would be useful to have a mechanism for adding a WorkingMemoryEventListener
to working memory using the vendor-specific properties/metadata.
I've been doing this by modifying the AbstractRuleSessionImpl to add all
WorkingMemoryEventListeners that it finds in the vendor-specific property map
to the working memory as listeners. This works well for me. Another solution
might be to create a property naming scheme, and use one of the names for a
listener. Currently all the properties are added as application data, so any
solution will clash to some extent with the current use of the property map.
Assuming that everyone agrees that this is a good idea, someone needs to decide
on the best mechanism and implement it. Implementation should be relatively
easy, I think figuring out the most practical mechanism is the difficult bit.
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