[jboss-user] [JBossCache] - Re: Problems about updating an ArrayList in replicated TreeC

[jeyrich]

We see the same exception. Trying to reproduce it, I found I can only provoke it by having a circular reference. I have created a small test case (and created JBCACHE-757 (http://jira.jboss.com/jira/browse/JBCACHE-757) for it):

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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