codice:
Grave: javax.validation.ConstraintViolationException: Bean Validation constraint(s) violated while executing Automatic Bean Validation on callback event:'prePersist'. Please refer to embedded ConstraintViolations for details.
	at org.eclipse.persistence.internal.jpa.metadata.listeners.BeanValidationListener.validateOnCallbackEvent(BeanValidationListener.java:90)
	at org.eclipse.persistence.internal.jpa.metadata.listeners.BeanValidationListener.prePersist(BeanValidationListener.java:62)
	at org.eclipse.persistence.descriptors.DescriptorEventManager.notifyListener(DescriptorEventManager.java:698)
	at org.eclipse.persistence.descriptors.DescriptorEventManager.notifyEJB30Listeners(DescriptorEventManager.java:641)
	at org.eclipse.persistence.descriptors.DescriptorEventManager.executeEvent(DescriptorEventManager.java:200)
	at org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.registerNewObjectClone(UnitOfWorkImpl.java:4257)
	at org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.registerNotRegisteredNewObjectForPersist(UnitOfWorkImpl.java:4234)
	at org.eclipse.persistence.internal.sessions.RepeatableWriteUnitOfWork.registerNotRegisteredNewObjectForPersist(RepeatableWriteUnitOfWork.java:513)
	at org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.registerNewObjectForPersist(UnitOfWorkImpl.java:4176)
	at org.eclipse.persistence.internal.jpa.EntityManagerImpl.persist(EntityManagerImpl.java:440)
	at com.sun.enterprise.container.common.impl.EntityManagerWrapper.persist(EntityManagerWrapper.java:269)
	at beans.OggettoFacade.inserisci(OggettoFacade.java:31)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:601)
	at org.glassfish.ejb.security.application.EJBSecurityManager.runMethod(EJBSecurityManager.java:1052)
	at org.glassfish.ejb.security.application.EJBSecurityManager.invoke(EJBSecurityManager.java:1124)
	at com.sun.ejb.containers.BaseContainer.invokeBeanMethod(BaseContainer.java:5388)
	at com.sun.ejb.EjbInvocation.invokeBeanMethod(EjbInvocation.java:619)
	at com.sun.ejb.containers.interceptors.AroundInvokeChainImpl.invokeNext(InterceptorManager.java:800)
	at com.sun.ejb.EjbInvocation.proceed(EjbInvocation.java:571)
	at com.sun.ejb.containers.interceptors.SystemInterceptorProxy.doAround(SystemInterceptorProxy.java:162)
	at com.sun.ejb.containers.interceptors.SystemInterceptorProxy.aroundInvoke(SystemInterceptorProxy.java:144)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:601)
	at com.sun.ejb.containers.interceptors.AroundInvokeInterceptor.intercept(InterceptorManager.java:861)
	at com.sun.ejb.containers.interceptors.AroundInvokeChainImpl.invokeNext(InterceptorManager.java:800)
	at com.sun.ejb.containers.interceptors.InterceptorManager.intercept(InterceptorManager.java:370)
	at com.sun.ejb.containers.BaseContainer.__intercept(BaseContainer.java:5360)
	at com.sun.ejb.containers.BaseContainer.intercept(BaseContainer.java:5348)
	at com.sun.ejb.containers.EJBLocalObjectInvocationHandler.invoke(EJBLocalObjectInvocationHandler.java:214)
	at com.sun.ejb.containers.EJBLocalObjectInvocationHandlerDelegate.invoke(EJBLocalObjectInvocationHandlerDelegate.java:88)
	at $Proxy146.inserisci(Unknown Source)
	at servlet.AggiungiServ.processRequest(AggiungiServ.java:56)
	at servlet.AggiungiServ.doPost(AggiungiServ.java:169)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:688)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:770)
	at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1542)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:281)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
	at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:655)
	at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:595)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:161)
	at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:331)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:231)
	at com.sun.enterprise.v3.services.impl.ContainerMapper$AdapterCallable.call(ContainerMapper.java:317)
	at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:195)
	at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:849)
	at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:746)
	at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:1045)
	at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:228)
	at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:137)
	at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:104)
	at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:90)
	at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:79)
	at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:54)
	at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:59)
	at com.sun.grizzly.ContextTask.run(ContextTask.java:71)
	at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:532)
	at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:513)
	at java.lang.Thread.run(Thread.java:722)

Grave: 	at org.eclipse.persistence.internal.jpa.metadata.listeners.BeanValidationListener.validateOnCallbackEvent(BeanValidationListener.java:90)
Grave: 	at org.eclipse.persistence.internal.jpa.metadata.listeners.BeanValidationListener.prePersist(BeanValidationListener.java:62)
Grave: 	at org.eclipse.persistence.descriptors.DescriptorEventManager.notifyListener(DescriptorEventManager.java:698)
Grave: 	at org.eclipse.persistence.descriptors.DescriptorEventManager.notifyEJB30Listeners(DescriptorEventManager.java:641)
Grave: 	at org.eclipse.persistence.descriptors.DescriptorEventManager.executeEvent(DescriptorEventManager.java:200)
Grave: 	at org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.registerNewObjectClone(UnitOfWorkImpl.java:4257)
Grave: 	at org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.registerNotRegisteredNewObjectForPersist(UnitOfWorkImpl.java:4234)
Grave: 	at org.eclipse.persistence.internal.sessions.RepeatableWriteUnitOfWork.registerNotRegisteredNewObjectForPersist(RepeatableWriteUnitOfWork.java:513)
Grave: 	at org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.registerNewObjectForPersist(UnitOfWorkImpl.java:4176)
Grave: 	at org.eclipse.persistence.internal.jpa.EntityManagerImpl.persist(EntityManagerImpl.java:440)
Grave: 	at com.sun.enterprise.container.common.impl.EntityManagerWrapper.persist(EntityManagerWrapper.java:269)
Grave: 	at beans.OggettoFacade.inserisci(OggettoFacade.java:31)
Grave: 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
Grave: 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
Grave: 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
Grave: 	at java.lang.reflect.Method.invoke(Method.java:601)
Grave: 	at org.glassfish.ejb.security.application.EJBSecurityManager.runMethod(EJBSecurityManager.java:1052)
Grave: 	at org.glassfish.ejb.security.application.EJBSecurityManager.invoke(EJBSecurityManager.java:1124)
Grave: 	at com.sun.ejb.containers.BaseContainer.invokeBeanMethod(BaseContainer.java:5388)
Grave: 	at com.sun.ejb.EjbInvocation.invokeBeanMethod(EjbInvocation.java:619)
Grave: 	at com.sun.ejb.containers.interceptors.AroundInvokeChainImpl.invokeNext(InterceptorManager.java:800)
Grave: 	at com.sun.ejb.EjbInvocation.proceed(EjbInvocation.java:571)
Grave: 	at com.sun.ejb.containers.interceptors.SystemInterceptorProxy.doAround(SystemInterceptorProxy.java:162)
Grave: 	at com.sun.ejb.containers.interceptors.SystemInterceptorProxy.aroundInvoke(SystemInterceptorProxy.java:144)
Grave: 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
Grave: 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
Grave: 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
Grave: 	at java.lang.reflect.Method.invoke(Method.java:601)
Grave: 	at com.sun.ejb.containers.interceptors.AroundInvokeInterceptor.intercept(InterceptorManager.java:861)
Grave: 	at com.sun.ejb.containers.interceptors.AroundInvokeChainImpl.invokeNext(InterceptorManager.java:800)
Grave: 	at com.sun.ejb.containers.interceptors.InterceptorManager.intercept(InterceptorManager.java:370)
Grave: 	at com.sun.ejb.containers.BaseContainer.__intercept(BaseContainer.java:5360)
Grave: 	at com.sun.ejb.containers.BaseContainer.intercept(BaseContainer.java:5348)
Grave: 	at com.sun.ejb.containers.EJBLocalObjectInvocationHandler.invoke(EJBLocalObjectInvocationHandler.java:214)
Grave: 	at com.sun.ejb.containers.EJBLocalObjectInvocationHandlerDelegate.invoke(EJBLocalObjectInvocationHandlerDelegate.java:88)
Grave: 	at $Proxy146.inserisci(Unknown Source)
Grave: 	at servlet.AggiungiServ.processRequest(AggiungiServ.java:56)
Grave: 	at servlet.AggiungiServ.doPost(AggiungiServ.java:169)
Grave: 	at javax.servlet.http.HttpServlet.service(HttpServlet.java:688)
Grave: 	at javax.servlet.http.HttpServlet.service(HttpServlet.java:770)
Grave: 	at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1542)
Grave: 	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:281)
Grave: 	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
Grave: 	at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:655)
Grave: 	at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:595)
Grave: 	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:161)
Grave: 	at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:331)
Grave: 	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:231)
Grave: 	at com.sun.enterprise.v3.services.impl.ContainerMapper$AdapterCallable.call(ContainerMapper.java:317)
Grave: 	at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:195)
Grave: 	at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:849)
Grave: 	at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:746)
Grave: 	at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:1045)
Grave: 	at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:228)
Grave: 	at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:137)
Grave: 	at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:104)
Grave: 	at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:90)
Grave: 	at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:79)
Grave: 	at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:54)
Grave: 	at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:59)
Grave: 	at com.sun.grizzly.ContextTask.run(ContextTask.java:71)
Grave: 	at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:532)
Grave: 	at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:513)
Grave: 	at java.lang.Thread.run(Thread.java:722)