title: JPA entity classes residing in a Wildfly module are not scanned
body: <p>I have some JPA entity classes residing in a Wildfly module. Although there are entity classes in this module, there's no JPA deployment descriptor (persistence.xml file) in the module. Here's the complete path of the module:</p>
  
  <pre><code>{Wildfly_installation}/modules/system/layers/base/br/edu/ufca/main/ufca.jar
  </code></pre>
  
  <p>The module descriptor (located in the same folder):</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt;
  &lt;module xmlns="urn:jboss:module:1.3" name="br.edu.ufca"&gt;
      &lt;resources&gt;
          &lt;resource-root path="ufca.jar"/&gt;
      &lt;/resources&gt;
  
      &lt;dependencies&gt;
          &lt;module name="javax.faces.api"/&gt;
      &lt;/dependencies&gt;
  &lt;/module&gt;
  </code></pre>
  
  <p>Now I have a web application where I declare the dependency on this module in META-INF\MANIFEST.MF:</p>
  
  <pre><code>Manifest-Version: 1.0
  Class-Path: 
  Dependencies: br.edu.ufca export
  </code></pre>
  
  <p>I also have, in the web application, the persistence.xml file where I list some entity classes that are located in the ufca.jar module:</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt;
  &lt;persistence xmlns="http://xmlns.jcp.org/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/persistence http://xmlns.jcp.org/xml/ns/persistence/persistence_2_1.xsd" version="2.1"&gt;
      &lt;persistence-unit name="criacao-email"&gt;
          &lt;jta-data-source&gt;java:jboss/datasources/CriacaoEmailDS&lt;/jta-data-source&gt;
  
          &lt;class&gt;br.edu.ufca.modelo.Setor&lt;/class&gt;
          &lt;!-- more classes --&gt;
      &lt;/persistence-unit&gt;
  &lt;/persistence&gt;
  </code></pre>
  
  <p>The problem is that when I run the web application executing code that tries to load some entity classes using an EntityManager, for example, I get exceptions like this:</p>
  
  <pre><code>Caused by: java.lang.IllegalArgumentException: org.hibernate.hql.internal.ast.QuerySyntaxException: Setor is not mapped [SELECT s FROM Setor s ORDER BY s.nome]
      at org.hibernate.jpa.spi.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1750) [hibernate-entitymanager-4.3.5.Final.jar:4.3.5.Final]
      at org.hibernate.jpa.spi.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1677) [hibernate-entitymanager-4.3.5.Final.jar:4.3.5.Final]
      at org.hibernate.jpa.spi.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1683) [hibernate-entitymanager-4.3.5.Final.jar:4.3.5.Final]
      at org.hibernate.jpa.spi.AbstractEntityManagerImpl.createQuery(AbstractEntityManagerImpl.java:331) [hibernate-entitymanager-4.3.5.Final.jar:4.3.5.Final]
      at org.jboss.as.jpa.container.AbstractEntityManager.createQuery(AbstractEntityManager.java:443) [wildfly-jpa-8.1.0.Final.jar:8.1.0.Final]
      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [rt.jar:1.8.0_20]
      at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) [rt.jar:1.8.0_20]
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) [rt.jar:1.8.0_20]
      at java.lang.reflect.Method.invoke(Method.java:483) [rt.jar:1.8.0_20]
      at org.jboss.weld.util.reflection.Reflections.invokeAndUnwrap(Reflections.java:401) [weld-core-impl-2.1.2.Final.jar:2014-01-09 09:23]
      at org.jboss.weld.bean.builtin.CallableMethodHandler.invoke(CallableMethodHandler.java:42) [weld-core-impl-2.1.2.Final.jar:2014-01-09 09:23]
      at org.jboss.weld.bean.proxy.EnterpriseTargetBeanInstance.invoke(EnterpriseTargetBeanInstance.java:56) [weld-core-impl-2.1.2.Final.jar:2014-01-09 09:23]
      at org.jboss.weld.bean.proxy.ProxyMethodHandler.invoke(ProxyMethodHandler.java:100) [weld-core-impl-2.1.2.Final.jar:2014-01-09 09:23]
      at org.jboss.weldx.persistence.EntityManager$911040993$Proxy$_$$_Weld$Proxy$.createQuery(Unknown Source) [hibernate-jpa-2.1-api-1.0.0.Final.jar:]
      at br.edu.ufca.criacaoemail.negocio.CriadorEmailSetorial.localizarSetores(CriadorEmailSetorial.java:28) [classes:]
      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [rt.jar:1.8.0_20]
      at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) [rt.jar:1.8.0_20]
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) [rt.jar:1.8.0_20]
      at java.lang.reflect.Method.invoke(Method.java:483) [rt.jar:1.8.0_20]
      at org.jboss.as.ee.component.ManagedReferenceMethodInterceptor.processInvocation(ManagedReferenceMethodInterceptor.java:52)
      at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:309)
      at org.jboss.invocation.WeavedInterceptor.processInvocation(WeavedInterceptor.java:53)
      at org.jboss.as.ee.component.interceptors.UserInterceptorFactory$1.processInvocation(UserInterceptorFactory.java:63)
      at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:309)
      at org.jboss.invocation.InterceptorContext$Invocation.proceed(InterceptorContext.java:407)
      at org.jboss.as.weld.ejb.Jsr299BindingsInterceptor.doMethodInterception(Jsr299BindingsInterceptor.java:82) [wildfly-weld-8.1.0.Final.jar:8.1.0.Final]
      at org.jboss.as.weld.ejb.Jsr299BindingsInterceptor.processInvocation(Jsr299BindingsInterceptor.java:93) [wildfly-weld-8.1.0.Final.jar:8.1.0.Final]
      at org.jboss.as.ee.component.interceptors.UserInterceptorFactory$1.processInvocation(UserInterceptorFactory.java:63)
      at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:309)
      at org.jboss.invocation.WeavedInterceptor.processInvocation(WeavedInterceptor.java:53)
      at org.jboss.as.ee.component.interceptors.UserInterceptorFactory$1.processInvocation(UserInterceptorFactory.java:63)
      at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:309)
      at org.jboss.as.ejb3.component.invocationmetrics.ExecutionTimeInterceptor.processInvocation(ExecutionTimeInterceptor.java:43) [wildfly-ejb3-8.1.0.Final.jar:8.1.0.Final]
      at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:309)
      at org.jboss.as.jpa.interceptor.SBInvocationInterceptor.processInvocation(SBInvocationInterceptor.java:47) [wildfly-jpa-8.1.0.Final.jar:8.1.0.Final]
      at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:309)
      at org.jboss.invocation.InterceptorContext$Invocation.proceed(InterceptorContext.java:407)
      at org.jboss.weld.ejb.AbstractEJBRequestScopeActivationInterceptor.aroundInvoke(AbstractEJBRequestScopeActivationInterceptor.java:46) [weld-core-impl-2.1.2.Final.jar:2014-01-09 09:23]
      at org.jboss.as.weld.ejb.EjbRequestScopeActivationInterceptor.processInvocation(EjbRequestScopeActivationInterceptor.java:83) [wildfly-weld-8.1.0.Final.jar:8.1.0.Final]
      at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:309)
      at org.jboss.as.ee.concurrent.ConcurrentContextInterceptor.processInvocation(ConcurrentContextInterceptor.java:45) [wildfly-ee-8.1.0.Final.jar:8.1.0.Final]
      at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:309)
      at org.jboss.invocation.InitialInterceptor.processInvocation(InitialInterceptor.java:21)
      at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:309)
      at org.jboss.invocation.ChainedInterceptor.processInvocation(ChainedInterceptor.java:61)
      at org.jboss.as.ee.component.interceptors.ComponentDispatcherInterceptor.processInvocation(ComponentDispatcherInterceptor.java:53)
      at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:309)
      at org.jboss.as.ejb3.component.interceptors.NonPooledEJBComponentInstanceAssociatingInterceptor.processInvocation(NonPooledEJBComponentInstanceAssociatingInterceptor.java:59) [wildfly-ejb3-8.1.0.Final.jar:8.1.0.Final]
      at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:309)
      at org.jboss.as.ejb3.tx.CMTTxInterceptor.invokeInOurTx(CMTTxInterceptor.java:273) [wildfly-ejb3-8.1.0.Final.jar:8.1.0.Final]
      ... 122 more
  Caused by: org.hibernate.hql.internal.ast.QuerySyntaxException: Setor is not mapped [SELECT s FROM Setor s ORDER BY s.nome]
      at org.hibernate.hql.internal.ast.QuerySyntaxException.generateQueryException(QuerySyntaxException.java:96) [hibernate-core-4.3.5.Final.jar:4.3.5.Final]
      at org.hibernate.QueryException.wrapWithQueryString(QueryException.java:120) [hibernate-core-4.3.5.Final.jar:4.3.5.Final]
      at org.hibernate.hql.internal.ast.QueryTranslatorImpl.doCompile(QueryTranslatorImpl.java:234) [hibernate-core-4.3.5.Final.jar:4.3.5.Final]
      at org.hibernate.hql.internal.ast.QueryTranslatorImpl.compile(QueryTranslatorImpl.java:158) [hibernate-core-4.3.5.Final.jar:4.3.5.Final]
      at org.hibernate.engine.query.spi.HQLQueryPlan.&lt;init&gt;(HQLQueryPlan.java:126) [hibernate-core-4.3.5.Final.jar:4.3.5.Final]
      at org.hibernate.engine.query.spi.HQLQueryPlan.&lt;init&gt;(HQLQueryPlan.java:88) [hibernate-core-4.3.5.Final.jar:4.3.5.Final]
      at org.hibernate.engine.query.spi.QueryPlanCache.getHQLQueryPlan(QueryPlanCache.java:190) [hibernate-core-4.3.5.Final.jar:4.3.5.Final]
      at org.hibernate.internal.AbstractSessionImpl.getHQLQueryPlan(AbstractSessionImpl.java:301) [hibernate-core-4.3.5.Final.jar:4.3.5.Final]
      at org.hibernate.internal.AbstractSessionImpl.createQuery(AbstractSessionImpl.java:236) [hibernate-core-4.3.5.Final.jar:4.3.5.Final]
      at org.hibernate.internal.SessionImpl.createQuery(SessionImpl.java:1800) [hibernate-core-4.3.5.Final.jar:4.3.5.Final]
      at org.hibernate.jpa.spi.AbstractEntityManagerImpl.createQuery(AbstractEntityManagerImpl.java:328) [hibernate-entitymanager-4.3.5.Final.jar:4.3.5.Final]
      ... 168 more
  Caused by: org.hibernate.hql.internal.ast.QuerySyntaxException: Setor is not mapped
      at org.hibernate.hql.internal.ast.util.SessionFactoryHelper.requireClassPersister(SessionFactoryHelper.java:189) [hibernate-core-4.3.5.Final.jar:4.3.5.Final]
      at org.hibernate.hql.internal.ast.tree.FromElementFactory.addFromElement(FromElementFactory.java:109) [hibernate-core-4.3.5.Final.jar:4.3.5.Final]
      at org.hibernate.hql.internal.ast.tree.FromClause.addFromElement(FromClause.java:95) [hibernate-core-4.3.5.Final.jar:4.3.5.Final]
      at org.hibernate.hql.internal.ast.HqlSqlWalker.createFromElement(HqlSqlWalker.java:331) [hibernate-core-4.3.5.Final.jar:4.3.5.Final]
      at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.fromElement(HqlSqlBaseWalker.java:3633) [hibernate-core-4.3.5.Final.jar:4.3.5.Final]
      at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.fromElementList(HqlSqlBaseWalker.java:3522) [hibernate-core-4.3.5.Final.jar:4.3.5.Final]
      at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.fromClause(HqlSqlBaseWalker.java:706) [hibernate-core-4.3.5.Final.jar:4.3.5.Final]
      at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.query(HqlSqlBaseWalker.java:562) [hibernate-core-4.3.5.Final.jar:4.3.5.Final]
      at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.selectStatement(HqlSqlBaseWalker.java:299) [hibernate-core-4.3.5.Final.jar:4.3.5.Final]
      at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.statement(HqlSqlBaseWalker.java:247) [hibernate-core-4.3.5.Final.jar:4.3.5.Final]
      at org.hibernate.hql.internal.ast.QueryTranslatorImpl.analyze(QueryTranslatorImpl.java:278) [hibernate-core-4.3.5.Final.jar:4.3.5.Final]
      at org.hibernate.hql.internal.ast.QueryTranslatorImpl.doCompile(QueryTranslatorImpl.java:206) [hibernate-core-4.3.5.Final.jar:4.3.5.Final]
      ... 176 more
  </code></pre>
  
  <p>which clearly shows that the JPA provider didn't scan the entity classes. But if I access from the web application any class from the Wildfly module without using JPA, I have success, which shows that the module is really in the classpath of the application.</p>
  
  <p>Is this default behaviour or what am I doing wrong?</p>
  
  <p>Thank you in advance.</p>
  
  <p>Marcos</p>