Hi,

I'm dealing with a legacy database where I have all business primary keys (complex keys), no foreign keys.
And for worst, there are no null columns defined, instead, when a column
is optional, if it is not informed it will be zero or space depending on the sql type.
So if I use standard hibernate mapping and define an optional many-to-one relationship, when I try to get some property for the related class, I received a: org.hibernate.ObjectNotFoundException: No row with the given identifier exists

I'm asking if there is any way to avoid this.
thank you in advance
Daniel

Hibernate version:
3.2.6
Full stack trace of any exception that occurs:
11:49:17,978 ERROR [/adk]:678 - Exception while dispatching incoming RPC call
com.google.gwt.user.server.rpc.UnexpectedException: Service method 'public abstract com.extjs.gxt.ui.client.data.PagingLoadResult com.arballon.gwt.core.client.SalesCategoriesService.getSalesStatisticsDetailFigures(com.arballon.gwt.core.client.model.CategoryDTO,java.util.List,com.extjs.gxt.ui.client.data.BasePagingLoadConfig)' threw an unexpected exception: org.hibernate.ObjectNotFoundException: No row with the given identifier exists: [com.arballon.gwt.core.server.persistent.types.Zone#com.arballon.gwt.core.server.persistent.types.Type$$EnhancerByCGLIB$$5f97e0e0@23454016]
at com.google.gwt.user.server.rpc.RPC.encodeResponseForFailure(RPC.java:360)
at com.google.gwt.user.server.rpc.RPC.invokeAndEncodeResponse(RPC.java:546)
at com.google.gwt.user.server.rpc.RemoteServiceServlet.processCall(RemoteServiceServlet.java:164)
at com.google.gwt.user.server.rpc.RemoteServiceServlet.doPost(RemoteServiceServlet.java:86)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:647)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:172)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:174)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:875)
at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665)
at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528)
at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689)
at java.lang.Thread.run(Unknown Source)
Caused by: org.hibernate.ObjectNotFoundException: No row with the given identifier exists: [com.arballon.gwt.core.server.persistent.types.Zone#com.arballon.gwt.core.server.persistent.types.Type$$EnhancerByCGLIB$$5f97e0e0@23454016]
at org.hibernate.impl.SessionFactoryImpl$1.handleEntityNotFound(SessionFactoryImpl.java:377)
at org.hibernate.proxy.AbstractLazyInitializer.checkTargetState(AbstractLazyInitializer.java:79)
at org.hibernate.proxy.AbstractLazyInitializer.initialize(AbstractLazyInitializer.java:68)
at org.hibernate.proxy.AbstractLazyInitializer.getImplementation(AbstractLazyInitializer.java:111)
at org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer.invoke(CGLIBLazyInitializer.java:150)
at com.arballon.gwt.core.server.persistent.types.Zone$$EnhancerByCGLIB$$c360b244.getDescription(<generated>)
at com.arballon.gwt.core.server.dao.sales.SalesStatisticsDAO.getStatisticsDetailFigures(SalesStatisticsDAO.java:131)
at com.arballon.gwt.core.server.SalesCategoriesServiceImpl.getSalesStatisticsDetailFigures(SalesCategoriesServiceImpl.java:93)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.google.gwt.user.server.rpc.RPC.invokeAndEncodeResponse(RPC.java:527)
... 18 more

Name and version of the database you are using:
MS SQL Server 2005