title: NonUniqueResultException is not being caught
body: <p>I am facing trouble catching a <code>NonUniqueResultException</code> from a method of one of my beans.</p>
  
  <p>Here is the method. It is inside of a <code>@Stateful</code> bean.</p>
  
  <pre><code>public Field findByTitle(String title) {
      if (title == null)
          return null;
  
      try {
          return entityManager
                  .createQuery("SELECT f FROM Field f WHERE f.title = ?1", Field.class)
                  .setParameter(1, title)
                  .getSingleResult();
      } catch (NoResultException e) {
          return null;
      } 
  }
  </code></pre>
  
  <p>Simply put, I want to catch the unchecked <code>NonUniqueResultException</code> from another bean which calls this method.</p>
  
  <p>Here is the try/catch of the calling bean:</p>
  
  <pre><code>try {
      Field field = fieldService.findByTitle(title);
  } catch (NonUniqueResultException e) {
      LogManager.logError("Oh no!");
  }
  </code></pre>
  
  <p>My expectation is that "Oh no!" will be printed to the console. Instead, the entire stack trace of the <code>NonUniqueResultException</code> is printed. The catch call is never even touched!</p>
  
  <p>Stack Trace: (Refers to this line: <code>.getSingleResult();</code>)</p>
  
  <pre><code>03:39:07,228 SEVERE [javax.enterprise.resource.webcontainer.jsf.context] (default task-93) javax.ejb.EJBException: javax.persistence.NonUniqueResultException: result returns more than one elements
      at org.jboss.as.ejb3.tx.CMTTxInterceptor.handleExceptionInOurTx(CMTTxInterceptor.java:187)
      at org.jboss.as.ejb3.tx.CMTTxInterceptor.invokeInOurTx(CMTTxInterceptor.java:277)
      at org.jboss.as.ejb3.tx.CMTTxInterceptor.required(CMTTxInterceptor.java:327)
      at org.jboss.as.ejb3.tx.CMTTxInterceptor.processInvocation(CMTTxInterceptor.java:239)
      at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
      at org.jboss.as.ejb3.component.interceptors.CurrentInvocationContextInterceptor.processInvocation(CurrentInvocationContextInterceptor.java:41)
      at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
      at org.jboss.as.ejb3.component.invocationmetrics.WaitTimeInterceptor.processInvocation(WaitTimeInterceptor.java:43)
      at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
      at org.jboss.as.ejb3.security.SecurityContextInterceptor.processInvocation(SecurityContextInterceptor.java:100)
      at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
      at org.jboss.as.ejb3.component.interceptors.ShutDownInterceptorFactory$1.processInvocation(ShutDownInterceptorFactory.java:64)
      at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
      at org.jboss.as.ejb3.component.interceptors.LoggingInterceptor.processInvocation(LoggingInterceptor.java:66)
      at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
      at org.jboss.as.ee.component.NamespaceContextInterceptor.processInvocation(NamespaceContextInterceptor.java:50)
      at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
      at org.jboss.as.ejb3.component.interceptors.AdditionalSetupInterceptor.processInvocation(AdditionalSetupInterceptor.java:54)
      at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
      at org.jboss.invocation.ContextClassLoaderInterceptor.processInvocation(ContextClassLoaderInterceptor.java:64)
      at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
      at org.jboss.invocation.InterceptorContext.run(InterceptorContext.java:356)
      at org.wildfly.security.manager.WildFlySecurityManager.doChecked(WildFlySecurityManager.java:636)
      at org.jboss.invocation.AccessCheckingInterceptor.processInvocation(AccessCheckingInterceptor.java:61)
      at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
      at org.jboss.invocation.InterceptorContext.run(InterceptorContext.java:356)
      at org.jboss.invocation.PrivilegedWithCombinerInterceptor.processInvocation(PrivilegedWithCombinerInterceptor.java:80)
      at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
      at org.jboss.invocation.ChainedInterceptor.processInvocation(ChainedInterceptor.java:61)
      at org.jboss.as.ee.component.ViewService$View.invoke(ViewService.java:195)
      at org.jboss.as.ee.component.ViewDescription$1.processInvocation(ViewDescription.java:185)
      at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
      at org.jboss.invocation.ChainedInterceptor.processInvocation(ChainedInterceptor.java:61)
      at org.jboss.as.ee.component.ProxyInvocationHandler.invoke(ProxyInvocationHandler.java:73)
      at me.mitcht.myapp.core.entities.services.FieldService$$$view157.findByTitle(Unknown Source)
      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
      at java.lang.reflect.Method.invoke(Method.java:497)
      at org.jboss.weld.util.reflection.Reflections.invokeAndUnwrap(Reflections.java:436)
      at org.jboss.weld.bean.proxy.EnterpriseBeanProxyMethodHandler.invoke(EnterpriseBeanProxyMethodHandler.java:127)
      at org.jboss.weld.bean.proxy.EnterpriseTargetBeanInstance.invoke(EnterpriseTargetBeanInstance.java:56)
      at org.jboss.weld.bean.proxy.ProxyMethodHandler.invoke(ProxyMethodHandler.java:100)
      at me.mitcht.myapp.core.entities.services.FieldService$Proxy$_$$_Weld$EnterpriseProxy$.findByTitle(Unknown Source)
      at me.mitcht.myapp.web.validators.UniqueFieldValidator.validate(UniqueFieldValidator.java:39)
      at javax.faces.component.UIInput.validateValue(UIInput.java:1164)
      at javax.faces.component.UIInput.validate(UIInput.java:982)
      at javax.faces.component.UIInput.executeValidate(UIInput.java:1248)
      at javax.faces.component.UIInput.processValidators(UIInput.java:712)
      at javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:1261)
      at javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:1261)
      at javax.faces.component.UIForm.processValidators(UIForm.java:253)
      at com.sun.faces.context.PartialViewContextImpl$PhaseAwareVisitCallback.visit(PartialViewContextImpl.java:575)
      at com.sun.faces.component.visit.PartialVisitContext.invokeVisitCallback(PartialVisitContext.java:183)
      at javax.faces.component.UIComponent.visitTree(UIComponent.java:1689)
      at javax.faces.component.UIForm.visitTree(UIForm.java:371)
      at javax.faces.component.UIComponent.visitTree(UIComponent.java:1700)
      at javax.faces.component.UIComponent.visitTree(UIComponent.java:1700)
      at javax.faces.component.UIComponent.visitTree(UIComponent.java:1700)
      at javax.faces.component.UIComponent.visitTree(UIComponent.java:1700)
      at javax.faces.component.UIComponent.visitTree(UIComponent.java:1700)
      at javax.faces.component.UIComponent.visitTree(UIComponent.java:1700)
      at javax.faces.component.UIComponent.visitTree(UIComponent.java:1700)
      at com.sun.faces.context.PartialViewContextImpl.processComponents(PartialViewContextImpl.java:403)
      at com.sun.faces.context.PartialViewContextImpl.processPartial(PartialViewContextImpl.java:266)
      at org.primefaces.context.PrimePartialViewContext.processPartial(PrimePartialViewContext.java:57)
      at javax.faces.context.PartialViewContextWrapper.processPartial(PartialViewContextWrapper.java:219)
      at org.omnifaces.context.OmniPartialViewContext.processPartial(OmniPartialViewContext.java:144)
      at javax.faces.component.UIViewRoot.processValidators(UIViewRoot.java:1193)
      at com.sun.faces.lifecycle.ProcessValidationsPhase.execute(ProcessValidationsPhase.java:76)
      at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
      at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:198)
      at javax.faces.webapp.FacesServlet.service(FacesServlet.java:658)
      at io.undertow.servlet.handlers.ServletHandler.handleRequest(ServletHandler.java:85)
      at io.undertow.servlet.handlers.FilterHandler.handleRequest(FilterHandler.java:81)
      at io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java:62)
      at io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36)
      at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
      at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
      at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
      at io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:265)
      at io.undertow.servlet.handlers.ServletInitialHandler.dispatchToPath(ServletInitialHandler.java:200)
      at io.undertow.servlet.spec.RequestDispatcherImpl.forwardImpl(RequestDispatcherImpl.java:193)
      at io.undertow.servlet.spec.RequestDispatcherImpl.forward(RequestDispatcherImpl.java:106)
      at me.mitcht.myapp.web.filters.TenantFilter.doFilter(TenantFilter.java:73)
      at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:60)
      at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131)
      at io.undertow.servlet.handlers.FilterHandler.handleRequest(FilterHandler.java:84)
      at io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java:62)
      at io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36)
      at org.wildfly.extension.undertow.security.SecurityContextAssociationHandler.handleRequest(SecurityContextAssociationHandler.java:78)
      at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
      at io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest(SSLInformationAssociationHandler.java:131)
      at io.undertow.servlet.handlers.security.ServletAuthenticationCallHandler.handleRequest(ServletAuthenticationCallHandler.java:57)
      at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
      at io.undertow.security.handlers.AbstractConfidentialityHandler.handleRequest(AbstractConfidentialityHandler.java:46)
      at io.undertow.servlet.handlers.security.ServletConfidentialityConstraintHandler.handleRequest(ServletConfidentialityConstraintHandler.java:64)
      at io.undertow.security.handlers.AuthenticationMechanismsHandler.handleRequest(AuthenticationMechanismsHandler.java:60)
      at io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHandler.handleRequest(CachedAuthenticatedSessionHandler.java:77)
      at io.undertow.security.handlers.NotificationReceiverHandler.handleRequest(NotificationReceiverHandler.java:50)
      at io.undertow.security.handlers.AbstractSecurityContextAssociationHandler.handleRequest(AbstractSecurityContextAssociationHandler.java:43)
      at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
      at org.wildfly.extension.undertow.security.jacc.JACCContextIdHandler.handleRequest(JACCContextIdHandler.java:61)
      at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
      at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
      at io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:284)
      at io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:263)
      at io.undertow.servlet.handlers.ServletInitialHandler.access$000(ServletInitialHandler.java:81)
      at io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java:174)
      at io.undertow.server.Connectors.executeRootHandler(Connectors.java:202)
      at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:793)
      at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
      at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
      at java.lang.Thread.run(Thread.java:745)
  Caused by: javax.persistence.NonUniqueResultException: result returns more than one elements
      at org.hibernate.jpa.internal.QueryImpl.getSingleResult(QueryImpl.java:539)
      at me.mitcht.myapp.core.entities.services.FieldService.findByTitle(FieldService.java:30)
      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
      at java.lang.reflect.Method.invoke(Method.java:497)
      at org.jboss.as.ee.component.ManagedReferenceMethodInterceptor.processInvocation(ManagedReferenceMethodInterceptor.java:52)
      at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
      at org.jboss.invocation.InterceptorContext$Invocation.proceed(InterceptorContext.java:437)
      at org.jboss.as.weld.ejb.Jsr299BindingsInterceptor.doMethodInterception(Jsr299BindingsInterceptor.java:82)
      at org.jboss.as.weld.ejb.Jsr299BindingsInterceptor.processInvocation(Jsr299BindingsInterceptor.java:93)
      at org.jboss.as.ee.component.interceptors.UserInterceptorFactory$1.processInvocation(UserInterceptorFactory.java:63)
      at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
      at org.jboss.as.ejb3.component.invocationmetrics.ExecutionTimeInterceptor.processInvocation(ExecutionTimeInterceptor.java:43)
      at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
      at org.jboss.as.jpa.interceptor.SBInvocationInterceptor.processInvocation(SBInvocationInterceptor.java:47)
      at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
      at org.jboss.as.jpa.interceptor.SFSBInvocationInterceptor.processInvocation(SFSBInvocationInterceptor.java:57)
      at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
      at org.jboss.as.ejb3.component.stateful.StatefulSessionSynchronizationInterceptor.processInvocation(StatefulSessionSynchronizationInterceptor.java:125)
      at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
      at org.jboss.invocation.InterceptorContext$Invocation.proceed(InterceptorContext.java:437)
      at org.jboss.weld.ejb.AbstractEJBRequestScopeActivationInterceptor.aroundInvoke(AbstractEJBRequestScopeActivationInterceptor.java:64)
      at org.jboss.as.weld.ejb.EjbRequestScopeActivationInterceptor.processInvocation(EjbRequestScopeActivationInterceptor.java:83)
      at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
      at org.jboss.as.ee.concurrent.ConcurrentContextInterceptor.processInvocation(ConcurrentContextInterceptor.java:45)
      at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
      at org.jboss.invocation.InitialInterceptor.processInvocation(InitialInterceptor.java:21)
      at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
      at org.jboss.invocation.ChainedInterceptor.processInvocation(ChainedInterceptor.java:61)
      at org.jboss.as.ee.component.interceptors.ComponentDispatcherInterceptor.processInvocation(ComponentDispatcherInterceptor.java:52)
      at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
      at org.jboss.as.ejb3.component.stateful.StatefulComponentInstanceInterceptor.processInvocation(StatefulComponentInstanceInterceptor.java:65)
      at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
      at org.jboss.as.ejb3.tx.CMTTxInterceptor.invokeInOurTx(CMTTxInterceptor.java:275)
      ... 112 more
  </code></pre>
  
  <p>What am I doing wrong?</p>
  
  <p>Update: Tried throwing the cause again; same result.</p>
  
  <pre><code>public Field findByTitle(String title) {
      if (title == null)
          return null;
  
      try {
          return entityManager
                  .createQuery("SELECT f FROM Field f WHERE f.title = ?1", Field.class)
                  .setParameter(1, title)
                  .getSingleResult();
      } catch (NoResultException e) {
          return null;
      } catch (NonUniqueResultException e) {
          throw e;
      }
  }
  </code></pre>
  
  <p>Update: This is working. It's not how I'd like it to work though...</p>
  
  <pre><code>try {
      Field field = fieldService.findByTitle(title);
  } catch (EJBException e) {
      if (e.getCause() instanceof NonUniqueResultException) {
          LogManager.logInfo("Oh no!");
      }
      return;
  }
  </code></pre>