[jboss-jira] [JBoss JIRA] Resolved: (JBRULES-960) WorkingMemory cannot insert proxy object

[Edson Tirelli (JIRA)]

     [ http://jira.jboss.com/jira/browse/JBRULES-960?page=all ]

Edson Tirelli resolved JBRULES-960.
-----------------------------------

    Resolution: Done

The problem is that SpringAOP is generating a proxy whose methods equals() and hashCode() are "final". As drools must either override these methods in the shadow proxy or not shadow the fact at all, I'm disabling shadow proxy generation for this use case.

It is really important to note that if you are asserting SpringAOP proxies as facts into the working memory, you will not be able to change any field value whose field is constrained in rules or you may incur in a memory leak and non-deterministic behavior by the rules engine. Unfortunately there is nothing we can do about, since when SpringAOP makes the methods equals and hashcode final, we can't override them anymore and as so, we can't shadow them.


> WorkingMemory cannot insert proxy object
> ----------------------------------------
>
>                 Key: JBRULES-960
>                 URL: http://jira.jboss.com/jira/browse/JBRULES-960
>             Project: JBoss Rules
>          Issue Type: Bug
>      Security Level: Public(Everyone can see) 
>    Affects Versions:  4.0.0.MR3
>            Reporter: zhou yanming
>         Assigned To: Edson Tirelli
>            Priority: Critical
>             Fix For:  4.0.0.MR4
>
>         Attachments: Main.java
>
>
> object was proxied by CGLIB,and works fine with 4.0.0.MR2,but when I upgrade to  4.0.0.MR3,It raise a exception
> Caused by: java.lang.VerifyError: model.Order$$EnhancerByCGLIB$$d6d596a8ShadowProxy overrides final method ?0ó*h=+.?0ó*h=+
> 	at java.lang.ClassLoader.defineClass1(Native Method)
> 	at java.lang.ClassLoader.defineClass(ClassLoader.java:620)
> 	at java.lang.ClassLoader.defineClass(ClassLoader.java:465)
> 	at org.drools.rule.MapBackedClassLoader.fastFindClass(MapBackedClassLoader.java:40)
> 	at org.drools.rule.MapBackedClassLoader.loadClass(MapBackedClassLoader.java:59)
> 	at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
> 	at org.drools.reteoo.Rete$ObjectTypeConf.<init>(Rete.java:352)
> 	at org.drools.reteoo.Rete.assertObject(Rete.java:152)
> 	at org.drools.reteoo.ReteooRuleBase.assertObject(ReteooRuleBase.java:190)
> 	at org.drools.reteoo.ReteooWorkingMemory.doInsert(ReteooWorkingMemory.java:70)
> 	at org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:772)
> 	at org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:584)

-- 
This message is automatically generated by JIRA.
-
If you think it was sent incorrectly contact one of the administrators: http://jira.jboss.com/jira/secure/Administrators.jspa
-
For more information on JIRA, see: http://www.atlassian.com/software/jira