[jboss-jira] [JBoss JIRA] Created: (JBRULES-2185) CLONE -Collection returned by StatefulKnowledgeSession.getObjects() doesn't conform to standard collection behaviour

Tue Jul 7 10:44:51 EDT 2009

CLONE -Collection returned by StatefulKnowledgeSession.getObjects() doesn't conform to standard collection behaviour
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                 Key: JBRULES-2185
                 URL: https://jira.jboss.org/jira/browse/JBRULES-2185
             Project: JBoss Drools
          Issue Type: Bug
      Security Level: Public (Everyone can see)
    Affects Versions: 5.0.0.CR1
            Reporter: Neil Wallace
            Assignee: Mark Proctor
             Fix For: 5.0.1.FINAL

StatefulKnowledgeSession.getObjects() returns a collection containing the objects in working memory.

The Javadoc for Collection.contains says:

"Returns true if this collection contains the specified element. More formally, returns true if and only if this collection contains at least one element e such that (o==null ? e==null : o.equals(e)). "

This is not the case though for StatefulKnowledgeSessionImpl.ObjectStoreWrapper.  The implementation of contains returns true only if it is the exact same object instance, but false if it is a different instance but which equals the instance in the working memory.

A workaround is to create a new collection and put the items returned into that.

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