[jboss-jira] [JBoss JIRA] Commented: (JBCACHE-757) Problem updating cyclic reference

[Ben Wang (JIRA)]

    [ http://jira.jboss.com/jira/browse/JBCACHE-757?page=comments#action_12342359 ] 
            
Ben Wang commented on JBCACHE-757:
----------------------------------

I have taken a look. The problem arises becuase of internal mapping is not canonical. For example, it would be ok, if you do:

main.reference = main2;

The reason is because the mapping starting from main (instead of main2). I don't have a quick fix in 1.4. However, this should not be a problem in 2.0 release since the internal mapping has been changed to a flat one.

Therefore, I am going to assign this to 2.0 to verify that it works.

> Problem updating cyclic reference
> ---------------------------------
>
>                 Key: JBCACHE-757
>                 URL: http://jira.jboss.com/jira/browse/JBCACHE-757
>             Project: JBoss Cache
>          Issue Type: Bug
>      Security Level: Public(Everyone can see) 
>          Components: PojoCache
>    Affects Versions: 1.4.0.SP1
>            Reporter: Jörn Eyrich
>         Assigned To: Ben Wang
>
> import org.jboss.cache.aop.PojoCache;
> import org.jboss.cache.aop.annotation.PojoCacheable;
> @PojoCacheable
> public class Main {
> 	public Main reference;
> 	
> 	public static void main(String[] args) throws Exception {
> 	
> 		PojoCache cache = new PojoCache();
> 		cache.startService();
> 		
> 		Main main  = new Main();
> 		Main main2 = new Main();
> 		main.reference  = main2;
> 		main2.reference = main;
> 		
> 		cache.putObject("/main",main);
> 		main2.reference = main; // <--
> 		System.out.println("Done...");
> 	}
> }
> results in:
> Exception in thread "main" java.lang.RuntimeException: PojoCache.putObject(): fqn: /main/reference/reference
> 	at org.jboss.cache.aop.PojoCache.putObject(PojoCache.java:478)
> 	at org.jboss.cache.aop.CacheInterceptor.invoke(CacheInterceptor.java:115)
> 	at org.jboss.aop.joinpoint.FieldWriteInvocation.invokeNext(FieldWriteInvocation.java:51)
> 	at Main.reference_w_$aop(Main.java)
> 	at Main.main(Main.java:21)
> Caused by: java.lang.IllegalStateException: AOPInstance.incrementRefCount(): source fqn: /main/reference/reference is already present.
> 	at org.jboss.cache.aop.AOPInstance.incrementRefCount(AOPInstance.java:92)
> 	at org.jboss.cache.aop.InternalDelegate.incrementRefCount(InternalDelegate.java:98)
> 	at org.jboss.cache.aop.ObjectGraphHandler.incrementRefCount(ObjectGraphHandler.java:212)
> 	at org.jboss.cache.aop.ObjectGraphHandler.setupRefCounting(ObjectGraphHandler.java:192)
> 	at org.jboss.cache.aop.ObjectGraphHandler.objectGraphPut(ObjectGraphHandler.java:88)
> 	at org.jboss.cache.aop.TreeCacheAopDelegate._putObject(TreeCacheAopDelegate.java:201)
> 	at org.jboss.cache.aop.PojoCache._putObject(PojoCache.java:731)
> 	at org.jboss.cache.aop.PojoCache.putObject(PojoCache.java:462)
> 	... 4 more

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