Creating Compound Primary Key in EJB
Hi there,
I'm creating a CMP EJB and am trying to use the Compund Primary Key option but I get the following error trace:
[EXCEPTION]
com.sap.engine.services.ejb.exceptions.BaseTransactionRolledbackLocalException: Exception in method com.nexeninc.seismic.ejb.SeisSetLocalHomeImpl0.create(java.lang.String,java.lang.String).
at com.nexeninc.seismic.ejb.SeisSetLocalHomeImpl0.create(SeisSetLocalHomeImpl0.java:363)
at com.nexeninc.seismic.ejb.SeismicServicesBean.registerDataSet(SeismicServicesBean.java:253)
at com.nexeninc.seismic.ejb.SeismicServicesLocalLocalObjectImpl0.registerDataSet(SeismicServicesLocalLocalObjectImpl0.java:775)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at com.sap.engine.services.webservices.runtime.EJBImplementationContainer.invokeMethod(EJBImplementationContainer.java:126)
at com.sap.engine.services.webservices.runtime.RuntimeProcessor.process(RuntimeProcessor.java:157)
at com.sap.engine.services.webservices.runtime.RuntimeProcessor.process(RuntimeProcessor.java:79)
at com.sap.engine.services.webservices.runtime.servlet.ServletDispatcherImpl.doPost(ServletDispatcherImpl.java:92)
at SoapServlet.doPost(SoapServlet.java:51)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at com.sap.engine.services.servlets_jsp.server.HttpHandlerImpl.runServlet(HttpHandlerImpl.java:390)
at com.sap.engine.services.servlets_jsp.server.HttpHandlerImpl.handleRequest(HttpHandlerImpl.java:264)
at com.sap.engine.services.httpserver.server.RequestAnalizer.startServlet(RequestAnalizer.java:347)
at com.sap.engine.services.httpserver.server.RequestAnalizer.startServlet(RequestAnalizer.java:325)
at com.sap.engine.services.httpserver.server.RequestAnalizer.invokeWebContainer(RequestAnalizer.java:887)
at com.sap.engine.services.httpserver.server.RequestAnalizer.handle(RequestAnalizer.java:241)
at com.sap.engine.services.httpserver.server.Client.handle(Client.java:92)
at com.sap.engine.services.httpserver.server.Processor.request(Processor.java:148)
at com.sap.engine.core.service630.context.cluster.session.ApplicationSessionMessageListener.process(ApplicationSessionMessageListener.java:33)
at com.sap.engine.core.cluster.impl6.session.MessageRunner.run(MessageRunner.java:41)
at com.sap.engine.core.thread.impl3.ActionObject.run(ActionObject.java:37)
at java.security.AccessController.doPrivileged(Native Method)
at com.sap.engine.core.thread.impl3.SingleThread.execute(SingleThread.java:100)
at com.sap.engine.core.thread.impl3.SingleThread.run(SingleThread.java:170)
Caused by: com.sap.engine.services.applocking.exception.SAPAppLockingIllegalArgumentException: Inconsistency in number of primary keys
at com.sap.engine.services.applocking.TableLockingImpl.getArgument(TableLockingImpl.java:388)
at com.sap.engine.services.applocking.TableLockingImpl.lock(TableLockingImpl.java:129)
at com.sap.engine.services.applocking.TableLockingImpl.lock(TableLockingImpl.java:139)
at com.sap.engine.services.ejb.entity.pm.lock.TableLockingSystem.write(TableLockingSystem.java:82)
at com.sap.engine.services.ejb.entity.pm.UpdatablePersistent.create(UpdatablePersistent.java:242)
at com.nexeninc.seismic.ejb.SeisSetBean0Persistent.create(SeisSetBean0Persistent.java:703)
at com.nexeninc.seismic.ejb.SeisSetBean0PM.ejbCreate(SeisSetBean0PM.java:370)
at com.nexeninc.seismic.ejb.SeisSetLocalHomeImpl0.create(SeisSetLocalHomeImpl0.java:334)
... 27 more
com.sap.engine.services.applocking.exception.SAPAppLockingIllegalArgumentException: Inconsistency in number of primary keys
at com.sap.engine.services.applocking.TableLockingImpl.getArgument(TableLockingImpl.java:388)
at com.sap.engine.services.applocking.TableLockingImpl.lock(TableLockingImpl.java:129)
at com.sap.engine.services.applocking.TableLockingImpl.lock(TableLockingImpl.java:139)
at com.sap.engine.services.ejb.entity.pm.lock.TableLockingSystem.write(TableLockingSystem.java:82)
at com.sap.engine.services.ejb.entity.pm.UpdatablePersistent.create(UpdatablePersistent.java:242)
at com.nexeninc.seismic.ejb.SeisSetBean0Persistent.create(SeisSetBean0Persistent.java:703)
at com.nexeninc.seismic.ejb.SeisSetBean0PM.ejbCreate(SeisSetBean0PM.java:370)
at com.nexeninc.seismic.ejb.SeisSetLocalHomeImpl0.create(SeisSetLocalHomeImpl0.java:334)
at com.nexeninc.seismic.ejb.SeismicServicesBean.registerDataSet(SeismicServicesBean.java:253)
at com.nexeninc.seismic.ejb.SeismicServicesLocalLocalObjectImpl0.registerDataSet(SeismicServicesLocalLocalObjectImpl0.java:775)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at com.sap.engine.services.webservices.runtime.EJBImplementationContainer.invokeMethod(EJBImplementationContainer.java:126)
at com.sap.engine.services.webservices.runtime.RuntimeProcessor.process(RuntimeProcessor.java:157)
at com.sap.engine.services.webservices.runtime.RuntimeProcessor.process(RuntimeProcessor.java:79)
at com.sap.engine.services.webservices.runtime.servlet.ServletDispatcherImpl.doPost(ServletDispatcherImpl.java:92)
at SoapServlet.doPost(SoapServlet.java:51)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at com.sap.engine.services.servlets_jsp.server.HttpHandlerImpl.runServlet(HttpHandlerImpl.java:390)
at com.sap.engine.services.servlets_jsp.server.HttpHandlerImpl.handleRequest(HttpHandlerImpl.java:264)
at com.sap.engine.services.httpserver.server.RequestAnalizer.startServlet(RequestAnalizer.java:347)
at com.sap.engine.services.httpserver.server.RequestAnalizer.startServlet(RequestAnalizer.java:325)
at com.sap.engine.services.httpserver.server.RequestAnalizer.invokeWebContainer(RequestAnalizer.java:887)
at com.sap.engine.services.httpserver.server.RequestAnalizer.handle(RequestAnalizer.java:241)
at com.sap.engine.services.httpserver.server.Client.handle(Client.java:92)
at com.sap.engine.services.httpserver.server.Processor.request(Processor.java:148)
at com.sap.engine.core.service630.context.cluster.session.ApplicationSessionMessageListener.process(ApplicationSessionMessageListener.java:33)
at com.sap.engine.core.cluster.impl6.session.MessageRunner.run(MessageRunner.java:41)
at com.sap.engine.core.thread.impl3.ActionObject.run(ActionObject.java:37)
at java.security.AccessController.doPrivileged(Native Method)
at com.sap.engine.core.thread.impl3.SingleThread.execute(SingleThread.java:100)
at com.sap.engine.core.thread.impl3.SingleThread.run(SingleThread.java:170)
My compund primary key class has two attributes and those are the only ones in my table.
Please note that I'm on SP 16. I'll post the details of the compound primary key class, ejbCreate method in the next post.
Here is the code I'm using.
Session Bean code:
SeisSetLocal seisSet = seisSetHome.create("10002", "SEIS_ACQTN_SURVEY");
Entity Bean code:
public SeisSetPK ejbCreate(String seisSetId, String seisSetType)
throws CreateException {
setSeisSetId(seisSetId);
setSeisSetType(seisSetType);
SeisSetPK seisSetPK = new SeisSetPK();
return seisSetPK;
SeisSetPK class code:
package com.nexeninc.seismic.ejb;
import java.io.Serializable;
public class SeisSetPK implements Serializable {
private static final boolean DEBUG = false;
public String seisSetId;
public String seisSetType;
public boolean equals(Object another) {
if (another instanceof SeisSetPK) {
SeisSetPK that = (SeisSetPK) another;
if (!this.seisSetId.equals(that.seisSetId)) {
return false;
if (!this.seisSetType.equals(that.seisSetType)) {
return false;
return true;
return false;
public int hashCode() {
int result = 0;
result += seisSetId.hashCode();
result += seisSetType.hashCode();
return result;
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This does not really work for me. What does that mean?
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BTW: after 200+ posts you should have learned how to use tags...
bye
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