[hibernate-issues] [Hibernate-JIRA] Commented: (HHH-2656) Using EntityMode.DOM4J results in an exception when mapping more than one collection to the root node (node=".")
Andries Schutte (JIRA)
noreply at atlassian.com
Fri Jun 15 14:46:52 EDT 2007
[ http://opensource.atlassian.com/projects/hibernate/browse/HHH-2656?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_27268 ]
Andries Schutte commented on HHH-2656:
--------------------------------------
I was able to resolve this issue by changing the fromXMLNode(...) method in CollectionType as follows:
public Object fromXMLNode(Node xml, Mapping factory) throws HibernateException {
//START CHANGE
return xml.clone();
//END CHANGE..
}
I tested it with various XML structures and creates / updates / queries / deletes etc., and it seems to be working fine in our environment (on JBoss 4.2.0).
> Using EntityMode.DOM4J results in an exception when mapping more than one collection to the root node (node=".")
> ----------------------------------------------------------------------------------------------------------------
>
> Key: HHH-2656
> URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-2656
> Project: Hibernate3
> Issue Type: Bug
> Components: core
> Affects Versions: 3.2.4.sp1
> Environment: Hibernate 3.2.4 SP1, tested with MySQL 5.0.
> Reporter: Andries Schutte
>
> When mapping multiple collections to the root node, an exception results (mapping and exception stack trace is shown below). This works fine if only one collection is mapped to the root node, or if one explicitly specifies unique names for each collection parent node. We are unfortunately restricted by having to use customer-defined XSDs, so this is a show-stopper for us.
> <?xml version="1.0"?>
> <!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
> "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
> <hibernate-mapping>
> <class entity-name="ProcessImpl" table="PROCESSES" node="Process">
> <id name="sysID" column="PROCESS_ID" node="sysID" type="string"/>
> <property name="version" column="PROCESS_VERSION" node="version" type="string"/>
> <property name="processType" column="PROCESS_TYPE" node="processType" type="string"/>
> <property name="status" column="PROCESS_STATE" node="status" type="string"/>
> <property name="createDate" column="PROCESS_CREATE_DATE" node="createDate" type="timestamp"/>
> <property name="creator" column="PROCESS_CREATOR" node="creator" type="string"/>
> <property name="transactionNumber" column="PROCESS_TX_NUMBER" node="transactionNumber" type="long"/>
> <property name="modifiedDate" column="PROCESS_MOD_DATE" node="modifiedDate" type="timestamp"/>
> <property name="modifier" column="PROCESS_MODIFIER" node="modifier" type="string"/>
> <property name="title" column="PROCESS_TITLE" node="title" type="string"/>
> <property name="timer" column="PROCESS_TIMER" node="timer" type="string"/>
> <property name="currentCSTime" column="PROCESS_CS_TIME" node="currentCSTime" type="timestamp"/>
> <bag name="requiredActivities"
> table="REQ_ACTIVITIES" node = "." embed-xml="true" lazy="false" cascade="all">
> <key column="PROCESS_ID" not-null="true"/>
> <element column="REQ_ACTIVITY" type="text" node="requiredActivity"/>
> </bag>
> <bag name="retractedGuidelines"
> table="RET_GUIDELINES" node = "." embed-xml="true" lazy="false" cascade="all">
> <key column="PROCESS_ID" not-null="true"/>
> <element column="RET_GUIDELINE" type="text" node="retractedGuideline"/>
> </bag>
>
> <set name="suspendedGuidelines"
> node = "." embed-xml="true" lazy="false" cascade="all">
> <key column="PROCESS_ID" not-null="true"/>
> <one-to-many entity-name="SuspendedGuidelineImpl"
> embed-xml="true" node="suspendedGuideline"/>
> </set>
>
> </class>
> </hibernate-mapping>
> Exception stack trace:
> [6/6/07 22:11:41:246 GMT] 00000012 SystemErr R org.hibernate.HibernateException: Found shared references to a collection: ProcessImpl.retractedGuidelines
> at org.hibernate.engine.Collections.processReachableCollection(Collections.java:163)
> at org.hibernate.event.def.FlushVisitor.processCollection(FlushVisitor.java:37)
> at org.hibernate.event.def.AbstractVisitor.processValue(AbstractVisitor.java:101)
> at org.hibernate.event.def.AbstractVisitor.processValue(AbstractVisitor.java:61)
> at org.hibernate.event.def.AbstractVisitor.processEntityPropertyValues(AbstractVisitor.java:55)
> at org.hibernate.event.def.DefaultFlushEntityEventListener.onFlushEntity(DefaultFlushEntityEventListener.java:131)
> at org.hibernate.event.def.AbstractFlushingEventListener.flushEntities(AbstractFlushingEventListener.java:196)
> at org.hibernate.event.def.AbstractFlushingEventListener.flushEverythingToExecutions(AbstractFlushingEventListener.java:76)
> at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:26)
> at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1000)
> at com.resonant.persistence.ExternalDataMgrHibernateDom4jImpl.persistHibernateEntity(ExternalDataMgrHibernateDom4jImpl.java:194)
> at com.resonant.persistence.ExternalDataMgrHibernateDom4jImpl.store(ExternalDataMgrHibernateDom4jImpl.java:172)
> at com.resonant.persistence.PersistenceHibernateDom4jImpl.storeObject(PersistenceHibernateDom4jImpl.java:215)
> at com.resonant.persistence.ejb.PersistenceLocalBean.storeObject(PersistenceLocalBean.java:192)
> at com.resonant.persistence.ejb.EJSLocalStatelessPersistenceLocalEJB_68e55914.storeObject(EJSLocalStatelessPersistenceLocalEJB_68e55914.java:1179)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:64)
> at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:615)
> at org.springframework.ejb.access.LocalSlsbInvokerInterceptor.invoke(LocalSlsbInvokerInterceptor.java:65)
> at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:161)
> at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
> at $Proxy2.storeObject(Unknown Source)
> at com.resonant.hub.processmanager.ProcessHubImpl.startProcess(ProcessHubImpl.java:179)
> at com.resonant.hub.processmanager.ejb.ProcessHubBean.startProcess(ProcessHubBean.java:138)
> at com.resonant.hub.processmanager.ejb.EJSRemoteStatelessProcessHubEJB_f45832db.startProcess(EJSRemoteStatelessProcessHubEJB_f45832db.java:208)
> at com.resonant.hub.processmanager.ejb._EJSRemoteStatelessProcessHubEJB_f45832db_Tie.startProcess(_EJSRemoteStatelessProcessHubEJB_f45832db_Tie.java:261)
> at com.resonant.hub.processmanager.ejb._EJSRemoteStatelessProcessHubEJB_f45832db_Tie._invoke(_EJSRemoteStatelessProcessHubEJB_f45832db_Tie.java:122)
> at com.ibm.CORBA.iiop.ServerDelegate.dispatchInvokeHandler(ServerDelegate.java:613)
> at com.ibm.CORBA.iiop.ServerDelegate.dispatch(ServerDelegate.java:466)
> at com.ibm.rmi.iiop.ORB.process(ORB.java:503)
> at com.ibm.CORBA.iiop.ORB.process(ORB.java:1552)
> at com.ibm.rmi.iiop.Connection.respondTo(Connection.java:2673)
> at com.ibm.rmi.iiop.Connection.doWork(Connection.java:2551)
> at com.ibm.rmi.iiop.WorkUnitImpl.doWork(WorkUnitImpl.java:62)
> at com.ibm.ejs.oa.pool.PooledThread.run(ThreadPool.java:95)
> at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1510)
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