Added to the wiki (http://wiki.apache.org/jakarta-hivemind/HibernateSupport).
Any pointers/ideas would be gratefully accepted. Yuxiang, could you add your technique on there too so that others can discuss it on there. I think we should be able to use bits from both approaches to get some powerful Hibernate integration going. Thanks, Jim -----Original Message----- From: [email protected] [mailto:[EMAIL PROTECTED] Sent: 15 September 2004 14:05 To: [email protected] Subject: [jira] Commented: (HIVEMIND-54) Request for built-in support for Hibernate in HiveMind lib The following comment has been added to this issue: Author: Howard M. Lewis Ship Created: Wed, 15 Sep 2004 6:04 AM Body: Might be easier to discuss this as a Change Proposal on the Wiki. I just fixed a bug (HIVEMIND-55) related to JDK proxies (that problem you observed), so you should be able to order your interceptors appropriately. The change is in CVS HEAD and will be in the 1.0 final release. --------------------------------------------------------------------- View this comment: http://issues.apache.org/jira/browse/HIVEMIND-54?page=comments#action_53108 --------------------------------------------------------------------- View the issue: http://issues.apache.org/jira/browse/HIVEMIND-54 Here is an overview of the issue: --------------------------------------------------------------------- Key: HIVEMIND-54 Summary: Request for built-in support for Hibernate in HiveMind lib Type: New Feature Status: Open Priority: Major Project: HiveMind Components: documentation examples hivebuild Assignee: Howard M. Lewis Ship Reporter: Yuxiang Bu Created: Mon, 13 Sep 2004 2:24 AM Updated: Wed, 15 Sep 2004 6:04 AM Description: Request for adding build-in support for Hibernate Session and Transaction management in HiveMind lib. Since Hibernate is so popular now, I believe it will become a hot request. At first I try to develop an HibernateInterceptorFactory service using javassist. But I found javassist cannot support "finally" yet. And the target code like this: boolean isTransactionBegunInThisMethod = false; try { isTransactionBegunInThisMethod = tm.beginTransaction(); Object result = _inner.... if (isTransactionBegunInThisMethod) tm.commitTransaction(); return result; } finally { if (isTransactionBegunInThisMethod) tm.rollbackTransaction(); } And I cannot develop similar codes in javassist. Then I developed an Interceptor with JDK proxy. However, the interceptor cannot be used after HiveMind LoggingInterceptor. The Registry successfully applies my HibernateInterceptor to service but fail to apply the Logging Interceptor. org.apache.hivemind.ApplicationRuntimeException: Unable to construct service doconline.Adder: Unable to lookup $Proxy0: $Proxy0 at org.apache.hivemind.impl.servicemodel.AbstractServiceModelImpl.constructNewS erviceImplementation(AbstractServiceModelImpl.java:156) ...... Caused by: org.apache.hivemind.ApplicationRuntimeException: Unable to lookup $Proxy0: $Proxy0 at org.apache.hivemind.service.impl.CtClassSource.getCtClass(CtClassSource.java :60) at org.apache.hivemind.service.impl.ClassFabImpl.addField(ClassFabImpl.java:71) at org.apache.hivemind.service.impl.LoggingInterceptorFactory.createInfrastruct ure(LoggingInterceptorFactory.java:236) ...... Caused by: javassist.NotFoundException: $Proxy0 at javassist.ClassPoolTail.openClassfile(ClassPoolTail.java:300) at javassist.ClassPoolTail.checkClassName(ClassPoolTail.java:177) at javassist.ClassPool.checkClassName(ClassPool.java:709) at javassist.ClassPool.get0(ClassPool.java:572) at javassist.ClassPool.get(ClassPool.java:561) at org.apache.hivemind.service.impl.CtClassSource.getCtClass(CtClassSource.java :56) ... 48 more The problem seems occurs when javassist want to find the class file in classpath but cannot find it( Of course it cannot ). If I put Transaction Interceptor before the Logging Interceptor, all works well. --------------------------------------------------------------------- JIRA INFORMATION: This message is automatically generated by JIRA. If you think it was sent incorrectly contact one of the administrators: http://issues.apache.org/jira/secure/Administrators.jspa If you want more information on JIRA, or have a bug to report see: http://www.atlassian.com/software/jira --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
