Just had another look at this problem and I think the problem is not in
your mapping but in XDoclet's handling of m:n relationships in value
objects. When you try to get the Organisation value object you get all
associated periods and when you get all periods, xdoclet generated code
tries to get all the Organisations. The exception that you are seeing
is a result of this circular dependency.
You could fix it by excluding one of the collections from your value
object or changing the XDoclet generated implementation code to check
for this circular dependency.
Hope this helps
Cheers
C.
Vang Nguyen wrote:
Hi,
Does any one have a working mapping of a bidirectional n:m relationship that they could share? I've been trying with various settings with no luck. My current xdoclet declarations for the relationship between Organsiation and Period entities are below, but I'm getting the exception listed below the code.
/**
* @ejb.relation
* name="Organisation-Period"
* role-name="periods-have-organisations"
* @weblogic.column-map
* key-column="C_ID"
* foreign-key-column="C_PERIOD_ID"
* @weblogic.relation
* join-table-name="MPRS_ORGANISATION_PERIOD_JOIN"
* @ejb.interface-method
* view-type="local"
* @ejb.value-object
* aggregate="au.gov.qld.des.mprs.dto.OrganisationTransferObject"
* aggregate-name="Organisation"
* members="au.gov.qld.des.mprs.ejb.OrganisationLocal"
* members-name="OrganisationLocal"
* relation="external"
* type="java.util.Collection"
*/
public abstract Collection getOrganisations();
/**
* @ejb.relation
* name="Organisation-Period"
* role-name="organisations-have-periods"
* @weblogic.column-map
* key-column="C_ID"
* foreign-key-column="C_ORGANISATION_ID"
* @weblogic.relation
* join-table-name="MPRS_ORGANISATION_PERIOD_JOIN"
* @ejb.interface-method
* view-type="local"
* @ejb.value-object
* aggregate="au.gov.qld.des.mprs.dto.PeriodTransferObject"
* aggregate-name="Period"
* members="au.gov.qld.des.mprs.ejb.PeriodLocal"
* members-name="PeriodLocal"
* relation="external"
* type="java.util.Collection"
*
*/
public abstract java.util.Collection getPeriods();
Exception occurred: au.gov.qld.des.mprs.exception.ServiceUnavailableException:
Exception occured getting Financial Years Caused By:
au.gov.qld.des.mprs.exception.ServiceUnavailableException: Error occurred
Caused By: au.gov.qld.des.mprs.exception.ServiceUnavailableException: Exception
converting Caused By: javax.ejb.TransactionRolledbackLocalException: EJB
Exception: ; nested exception is: javax.ejb.EJBException: nested exception is:
javax.ejb.TransactionRolledbackLocalException: EJB Exception: ; nested
exception is: javax.ejb.EJBException: nested exception is:
javax.ejb.TransactionRolledbackLocalException: [EJB:010180]Illegal Reentrant
call to 'Period(Application: mprs-ear-1.0, EJBComponent: mprs-ejb-1.0.jar)'
with primary key: '1'.: weblogic.ejb20.InternalException: [EJB:010180]Illegal
Reentrant call to 'Period(Application: mprs-ear-1.0, EJBComponent:
mprs-ejb-1.0.jar)' with primary key: '1'. at
weblogic.ejb20.manager.BaseEntityManager.checkForReentrant(Ljavax.ejb.EntityBean;Ljava.lang.Object;)V(BaseEntityManager.java:1468)
at
weblogic.ejb20.manager.DBManager.preInvoke(Lweblogic.ejb20.internal.InvocationWrapper;)Ljavax.ejb.EnterpriseBean;(DBManager.java:251)
at
weblogic.ejb20.internal.BaseEJBLocalObject.preInvoke(Lweblogic.ejb20.internal.InvocationWrapper;)Lweblogic.ejb20.internal.InvocationWrapper;(BaseEJBLocalObject.java:228)
at
weblogic.ejb20.internal.EntityEJBLocalObject.preInvoke(Lweblogic.ejb20.internal.MethodDescriptor;Lweblogic.security.service.ContextHandler;)Lweblogic.ejb20.internal.InvocationWrapper;(EntityEJBLocalObject.java:72)
at
au.gov.qld.des.mprs.ejb.Period_a31n8k_ELOImpl.getPeriodTransferObject()Lau.gov.qld.des.mprs.dto.PeriodTransferObject;(Period_a31n8k_ELOImpl.java:514)
at
au.gov.qld.des.mprs.ejb.OrganisationCMP.getOrganisationTransferObject()Lau.gov.qld.des.mprs.dto.OrganisationTransferObject;(OrganisationCMP.java:102)
at
au.gov.qld.des.mprs.ejb.Organisation_smb3qq_ELOImpl.getOrganisationTransferObject()Lau.gov.qld.des.mprs.dto.OrganisationTransferObject;(Organisation_smb3qq_ELOImpl.java:585)
at
au.gov.qld.des.mprs.ejb.PeriodCMP.getPeriodTransferObject()Lau.gov.qld.des.mprs.dto.PeriodTransferObject;(PeriodCMP.java:106)
at
au.gov.qld.des.mprs.ejb.Period_a31n8k_ELOImpl.getPeriodTransferObject()Lau.gov.qld.des.mprs.dto.PeriodTransferObject;(Period_a31n8k_ELOImpl.java:531)
at
au.gov.qld.des.mprs.ejb.MPRSFacadeBean.convertPeriodLocalsToDTOs(Ljava.util.Collection;)Ljava.util.Collection;(MPRSFacadeBean.java:281)
at
au.gov.qld.des.mprs.ejb.MPRSFacadeBean.findFinancialYears()Ljava.util.Collection;(MPRSFacadeBean.java:222)
at
au.gov.qld.des.mprs.ejb.MPRSFacade_vhf35m_EOImpl.findFinancialYears()Ljava.util.Collection;(MPRSFacade_vhf35m_EOImpl.java:154)
at
au.gov.qld.des.mprs.ejb.MPRSFacade_vhf35m_EOImpl_CBV.findFinancialYears()Ljava.util.Collection;(Unknown
Source) at
au.gov.qld.des.mprs.business.MPRSBusinessDelegate.findFinancialYears()Ljava.util.Collection;(MPRSBusinessDelegate.java:83)
at
au.gov.qld.des.mprs.FinancialYearAction.view(Lorg.apache.struts.action.ActionMapping;Lorg.apache.struts.action.ActionForm;Ljavax.servlet.http.HttpServletRequest;Ljavax.servlet.http.HttpServletResponse;)Lorg.apache.struts.action.ActionForward;(FinancialYearAction.java:43)
at
jrockit.reflect.NativeMethodInvoker.invoke0(Ljava.lang.Object;ILjava.lang.Object;[Ljava.lang.Object;)Ljava.lang.Object;(Unknown
Source) at
jrockit.reflect.NativeMethodInvoker.invoke(Ljava.lang.Object;[Ljava.lang.Object;)Ljava.lang.Object;(Unknown
Source) at
jrockit.reflect.VirtualNativeMethodInvoker.invoke(Ljava.lang.Object;[Ljava.lang.Object;)Ljava.lang.Object;(Unknown
Source) at
java.lang.reflect.Method.invoke(Ljava.lang.Object;[Ljava.lang.Object;I)Ljava.lang.Object;(Unknown
Source) at
org.apache.struts.actions.DispatchAction.dispatchMethod(Lorg.apache.struts.action.ActionMapping;Lorg.apache.struts.action.ActionForm;Ljavax.servlet.http.HttpServletRequest;Ljavax.servlet.http.HttpServletResponse;Ljava.lang.String;)Lorg.apache.struts.action.ActionForward;(DispatchAction.java:274)
at
org.apache.struts.actions.DispatchAction.execute(Lorg.apache.struts.action.ActionMapping;Lorg.apache.struts.action.ActionForm;Ljavax.servlet.http.HttpServletRequest;Ljavax.servlet.http.HttpServletResponse;)Lorg.apache.struts.action.ActionForward;(DispatchAction.java:194)
at
org.apache.struts.actions.MappingDispatchAction.execute(Lorg.apache.struts.action.ActionMapping;Lorg.apache.struts.action.ActionForm;Ljavax.servlet.http.HttpServletRequest;Ljavax.servlet.http.HttpServletResponse;)Lorg.apache.struts.action.ActionForward;(MappingDispatchAction.java:169)
at
org.apache.struts.action.RequestProcessor.processActionPerform(Ljavax.servlet.http.HttpServletRequest;Ljavax.servlet.http.HttpServletResponse;Lorg.apache.struts.action.Action;Lorg.apache.struts.action.ActionForm;Lorg.apache.struts.action.ActionMapping;)Lorg.apache.struts.action.ActionForward;(RequestProcessor.java:419)
at
org.apache.struts.action.RequestProcessor.process(Ljavax.servlet.http.HttpServletRequest;Ljavax.servlet.http.HttpServletResponse;)V(RequestProcessor.java:224)
at
org.apache.struts.action.ActionServlet.process(Ljavax.servlet.http.HttpServletRequest;Ljavax.servlet.http.HttpServletResponse;)V(ActionServlet.java:1194)
at
org.apache.struts.action.ActionServlet.doGet(Ljavax.servlet.http.HttpServletRequest;Ljavax.servlet.http.HttpServletResponse;)V(ActionServlet.java:414)
at
javax.servlet.http.HttpServlet.service(Ljavax.servlet.http.HttpServletRequest;Ljavax.servlet.http.HttpServletResponse;)V(HttpServlet.java:740)
at
javax.servlet.http.HttpServlet.service(Ljavax.servlet.ServletRequest;Ljavax.servlet.ServletResponse;)V(HttpServlet.java:853)
at
weblogic.servlet.internal.ServletStubImpl$ServletInvocationAction.run()Ljava.lang.Object;(ServletStubImpl.java:996)
at
weblogic.servlet.internal.ServletStubImpl.invokeServlet(Ljavax.servlet.ServletRequest;Ljavax.servlet.ServletResponse;Lweblogic.servlet.internal.FilterChainImpl;)V(ServletStubImpl.java:419)
at
weblogic.servlet.internal.ServletStubImpl.invokeServlet(Ljavax.servlet.ServletRequest;Ljavax.servlet.ServletResponse;)V(ServletStubImpl.java:315)
at
weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run()Ljava.lang.Object;(WebAppServletContext.java:6452)
Regards,
Vang Nguyen
Enterprise Application Programmer
Department of Emergency Services
(61-7) 3247 8586
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It may contain confidential or privileged information or both.
No confidentiality or privilege is waived or lost by any mis transmission.
If you receive this correspondence in error please delete it from your system
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Any opinions expressed in this message are those of the individual sender
except where the sender expressly,
and with the authority, states them to be the opinions of the Department of
Emergency Services, Queensland.
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