title: javax.ejb.EJBException when persisting an entity
body: <p>I have an entity called <em>Medico</em> which was created as an Entity Class from Database, hence I think the entity definition is failsafe here, nevertheless the definition is the following:  </p>
  
  <pre><code>@Entity
  @Table(name = "medico")
  @XmlRootElement
  @NamedQueries({All named queries here})
  public class Medico implements Serializable {
  private static final long serialVersionUID = 1L;
      @Id
      @GeneratedValue(strategy = GenerationType.IDENTITY)
      @Basic(optional = false)
      @NotNull
      @Column(name = "idMedico")
      private Integer idMedico;
      @Basic(optional = false)
      @NotNull
      @Column(name = "Identificacion")
      private int identificacion;
      @Basic(optional = false)
      @NotNull
      @Size(min = 1, max = 33)
      @Column(name = "Primer_Nombre")
      private String primerNombre;
      @Size(max = 33)
      @Column(name = "Segundo_Nombre")
      private String segundoNombre;
      @Basic(optional = false)
      @NotNull
      @Size(min = 1, max = 33)
      @Column(name = "Primer_Apellido")
      private String primerApellido;
      @Size(max = 33)
      @Column(name = "Segundo_Apellido")
      private String segundoApellido;
      @Basic(optional = false)
      @NotNull
      @Column(name = "Telefono")
      private long telefono;
      @Column(name = "Telefono_Celular")
      private BigInteger telefonoCelular;
      @Basic(optional = false)
      @NotNull
      @Size(min = 1, max = 33)
      @Column(name = "Direccion")
      private String direccion;
      // Constructors..
      // Getters and setters..
  }
  </code></pre>
  
  <p>I want to create new <em>Medico</em> entities on MySql database, and this is how I am doing so:  </p>
  
  <pre><code>@ManagedBean
  @ViewScoped
  public class ConsultaMedicos implements Serializable {
  // Variables Definition ..
  @EJB
  private DoctorsFacadeLocal doctorsFacade; 
  // Constructor and other methods ..
  public String save()
      {
          try{
              doctorsFacade.save(consultedDoctor);
              FacesMessage fm = new FacesMessage(FacesMessage.SEVERITY_INFO, CREATE_SUMMARY, null);
              FacesContext.getCurrentInstance().addMessage(CREATE_SUMMARY, fm);
          }
          catch(Exception ex){
              FacesMessage fm = new FacesMessage(FacesMessage.SEVERITY_ERROR, CREATE_ERROR_SUMMARY, null);
              FacesContext.getCurrentInstance().addMessage(CREATE_ERROR_SUMMARY, fm);
              return null;
          }
          return "listaMedicos.xhtml";
      }
  ...
  }  
  </code></pre>
  
  <hr>
  
  <pre><code>@Local
  public interface DoctorsFacadeLocal {
  
      List&lt;Medico&gt; findAllDoctors();
      Medico findDoctorByIdNumber(int identificacion);
      void edit(Medico medico);
      void save(Medico medico);
  }  
  </code></pre>
  
  <hr>
  
  <pre><code>@Stateless
  public class DoctorsFacade implements DoctorsFacadeLocal {
  
      @PersistenceContext
      private EntityManager em;
  // Other methods.. 
      @Override
      @TransactionAttribute(TransactionAttributeType.REQUIRED)
      public void save(Medico medico)
      {
          em.persist(medico);
          em.flush();
      }
  }
  </code></pre>
  
  <hr>
  
  <p>After I call <code>save()</code> from my JSF page, I get the following exception:  </p>
  
  <pre><code>javax.ejb.EJBException
      at com.sun.ejb.containers.BaseContainer.processSystemException(BaseContainer.java:5194)
      at com.sun.ejb.containers.BaseContainer.completeNewTx(BaseContainer.java:5092)
      at com.sun.ejb.containers.BaseContainer.postInvokeTx(BaseContainer.java:4880)
      at com.sun.ejb.containers.BaseContainer.postInvoke(BaseContainer.java:2039)
      at com.sun.ejb.containers.BaseContainer.postInvoke(BaseContainer.java:1990)
      at com.sun.ejb.containers.EJBLocalObjectInvocationHandler.invoke(EJBLocalObjectInvocationHandler.java:222)
      at com.sun.ejb.containers.EJBLocalObjectInvocationHandlerDelegate.invoke(EJBLocalObjectInvocationHandlerDelegate.java:88)
      at $Proxy157.save(Unknown Source)
      at com.lemm.web.bean.ConsultaMedicos.save(ConsultaMedicos.java:89)
      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:597)
      at javax.el.BeanELResolver.invokeMethod(BeanELResolver.java:737)
      at javax.el.BeanELResolver.invoke(BeanELResolver.java:467)
      at javax.el.CompositeELResolver.invoke(CompositeELResolver.java:254)
      at com.sun.el.parser.AstValue.invoke(AstValue.java:228)
      at com.sun.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:297)
      at com.sun.faces.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:105)
      at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:88)
      at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:102)
      at javax.faces.component.UICommand.broadcast(UICommand.java:315)
      at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:794)
      at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1259)
      at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:81)
      at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
      at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
      at javax.faces.webapp.FacesServlet.service(FacesServlet.java:409)
      at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1534)
      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 com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:98)
      at com.sun.enterprise.web.PESessionLockingStandardPipeline.invoke(PESessionLockingStandardPipeline.java:91)
      at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:162)
      at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:326)
      at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:227)
      at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:170)
      at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:822)
      at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:719)
      at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:1013)
      at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:225)
      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:662)
  Caused by: 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:4216)
      at org.eclipse.persistence.internal.sessions.RepeatableWriteUnitOfWork.cloneAndRegisterNewObject(RepeatableWriteUnitOfWork.java:576)
      at org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.internalRegisterObject(UnitOfWorkImpl.java:2883)
      at org.eclipse.persistence.internal.sessions.MergeManager.registerObjectForMergeCloneIntoWorkingCopy(MergeManager.java:932)
      at org.eclipse.persistence.internal.sessions.MergeManager.mergeChangesOfCloneIntoWorkingCopy(MergeManager.java:492)
      at org.eclipse.persistence.internal.sessions.MergeManager.mergeChanges(MergeManager.java:263)
      at org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.mergeCloneWithReferences(UnitOfWorkImpl.java:3467)
      at org.eclipse.persistence.internal.sessions.RepeatableWriteUnitOfWork.mergeCloneWithReferences(RepeatableWriteUnitOfWork.java:363)
      at org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.mergeCloneWithReferences(UnitOfWorkImpl.java:3427)
      at org.eclipse.persistence.internal.jpa.EntityManagerImpl.mergeInternal(EntityManagerImpl.java:452)
      at org.eclipse.persistence.internal.jpa.EntityManagerImpl.merge(EntityManagerImpl.java:429)
      at com.sun.enterprise.container.common.impl.EntityManagerWrapper.merge(EntityManagerWrapper.java:286)
      at com.lemm.ejb.facade.DoctorsFacade.save(DoctorsFacade.java:61)
      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:597)
      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:5367)
      at com.sun.ejb.EjbInvocation.invokeBeanMethod(EjbInvocation.java:619)
      at com.sun.ejb.containers.interceptors.AroundInvokeChainImpl.invokeNext(InterceptorManager.java:801)
      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.GeneratedMethodAccessor78.invoke(Unknown Source)
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
      at java.lang.reflect.Method.invoke(Method.java:597)
      at com.sun.ejb.containers.interceptors.AroundInvokeInterceptor.intercept(InterceptorManager.java:862)
      at com.sun.ejb.containers.interceptors.AroundInvokeChainImpl.invokeNext(InterceptorManager.java:801)
      at com.sun.ejb.containers.interceptors.InterceptorManager.intercept(InterceptorManager.java:371)
      at com.sun.ejb.containers.BaseContainer.__intercept(BaseContainer.java:5339)
      at com.sun.ejb.containers.BaseContainer.intercept(BaseContainer.java:5327)
      at com.sun.ejb.containers.EJBLocalObjectInvocationHandler.invoke(EJBLocalObjectInvocationHandler.java:214)
      ... 47 more
  </code></pre>
  
  <hr>
  
  <p>What am I doing wrong? What am I missing?<br>
  If it serves for anything heres my persistence.xml  </p>
  
  <pre><code>&lt;persistence-unit name="lemmPU" transaction-type="JTA"&gt;
      &lt;jta-data-source&gt;jdbc/lemmdb&lt;/jta-data-source&gt;
      &lt;exclude-unlisted-classes&gt;false&lt;/exclude-unlisted-classes&gt;
      &lt;properties&gt;
      &lt;/properties&gt;
  &lt;/persistence-unit&gt;
  </code></pre>