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  1. Application Server 7
  2. AS7-4435

CLONE - EAR deployment with initialize-in-order doesn't wait for persistence-unit if it's not used in the module

    Details

    • Type: Bug
    • Status: Resolved (View Workflow)
    • Priority: Major
    • Resolution: Done
    • Affects Version/s: 7.1.1.Final
    • Fix Version/s: 7.1.2.Final (EAP)
    • Component/s: EE
    • Environment:

      EAP 6.0.0.ER4.1, Seam 2.3.0.Beta2-SNAPSHOT (2012-04-06)

    • Affects:
      Release Notes
    • Workaround Description:
      Hide

      Add an EJB injecting the persistence unit, which prevents furhter module to be started before the prsistence unit is ready.

      import javax.persistence.PersistenceUnit;
      import javax.persistence.EntityManagerFactory;
      import javax.ejb.Singleton;
      import javax.ejb.Startup;
      
      @Singleton
      @Startup
      public class Aargh
      {
         @PersistenceUnit
         private EntityManagerFactory emf;
      }
      
      
      Show
      Add an EJB injecting the persistence unit, which prevents furhter module to be started before the prsistence unit is ready. import javax.persistence.PersistenceUnit; import javax.persistence.EntityManagerFactory; import javax.ejb.Singleton; import javax.ejb.Startup; @Singleton @Startup public class Aargh { @PersistenceUnit private EntityManagerFactory emf; }

      Description

      I have an Seam2 EAR application (Blog example from Seam distribution) which almost always fails to deploy with

      javax.naming.NameNotFoundException: Error looking up blogEntityManagerFactory, service service jboss.naming.context.java.blogEntityManagerFactory is not started
      

      The application.xml looks like this:

      <?xml version="1.0" encoding="UTF-8"?>                                                                                                                                                                              
      <application xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/application_6.x
      sd" version="6">                                                                                                                                                                                                    
        <description>Examples for Seam 2 Framework in Java EE6 environment</description>                                                                                                                                  
        <display-name>blog-ear</display-name>                                                                                                                                                                             
        <initialize-in-order>true</initialize-in-order>                                                                                                                                                                   
        <module>                                                                                                                                                                                                          
          <ejb>blog-ejb.jar</ejb>                                                                                                                                                                                         
        </module>                                                                                                                                                                                                         
        <module>                                                                                                                                                                                                          
          <web>                                                                                                                                                                                                           
            <web-uri>blog-web.war</web-uri>                                                                                                                                                                               
            <context-root>/seam-blog</context-root>                                                                                                                                                                       
          </web>                                                                                                                                                                                                          
        </module>                                                                                                                                                                                                         
        <module>                                                                                                                                                                                                          
          <ejb>jboss-seam.jar</ejb>                                                                                                                                                                                       
        </module>                                                                                                                                                                                                         
        <library-directory>lib</library-directory>                                                                                                                                                                        
      </application>   
      

      The blog-ejb.jar contains persistence.xml:

                                                                                                                      
      <?xml version="1.0" encoding="UTF-8"?>                                        
      <persistence xmlns="http://java.sun.com/xml/ns/persistence"    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd"                                                                                 
                   version="1.0">                                                                                                                                                                                         
         <persistence-unit name="entityManager">                                                                                                                                                                          
            <provider>org.hibernate.ejb.HibernatePersistence</provider>                                                                                                                                                   
            <jta-data-source>java:jboss/datasources/ExampleDS</jta-data-source>                                                                                                                                           
            <properties>                                                                                                                                                                                                  
               <property name="hibernate.hbm2ddl.auto" value="create-drop"/>                                                                                                                                              
               <property name="hibernate.show_sql" value="true"/>                                                                                                                                    
                                                                                                                                                                                                                         
               <property name="hibernate.cache.use_second_level_cache" value="true"/>                                                                                                                                     
               <property name="hibernate.cache.use_query_cache" value="true"/>                                                                                                                                            
               <property name="jboss.entity.manager.factory.jndi.name" value="java:/blogEntityManagerFactory"/>                                                                                                                                                                                                                                                 
               <property name="hibernate.search.default.directory_provider" value="filesystem"/>                                                                                                                                                                                                                                                                  
               <property name="hibernate.search.default.indexBase" value="./blogindexes"/>                                                                                                                                
            </properties>                                                                                                                                                                                                 
         </persistence-unit>                                                                                                                                                                                              
      </persistence>  
      

      The persistence unit is accessed in Seam via JNDI

      (components.xml)

       <persistence:managed-persistence-context name="entityManager"                                                                                                                                                    
                                                  auto-create="true"                                                                                                                                                      
                                                  persistence-unit-jndi-name="java:/blogEntityManagerFactory"/>
      

      This (usually) fails in the IndexerService, which is started automatically during servlet startup, as the java:/blogEntityManagerFactory is not yet ready.

      Note that in the application.xml the "initialize-in-order" is defined, so the web module should not start before the blog-ejb.jar ( which contains the persistence.xml), is started.

      Source of IndexerService:

      package actions;
      
      import javax.ejb.Remove;
      
      import org.hibernate.search.jpa.FullTextEntityManager;
      import org.jboss.seam.ScopeType;
      import org.jboss.seam.annotations.Create;
      import org.jboss.seam.annotations.Destroy;
      import org.jboss.seam.annotations.In;
      import org.jboss.seam.annotations.Name;
      import org.jboss.seam.annotations.Scope;
      import org.jboss.seam.annotations.Startup;
      
      /**
       * Index Blog entry at startup
       *
       * @author Emmanuel Bernard
       * @author Sanne Grinovero
       */
      @Name("indexerService")
      @Scope(ScopeType.APPLICATION)
      @Startup
      public class IndexerService
      {
         @In
         private FullTextEntityManager entityManager;
      
         @Create
         public void index() {
            entityManager.createIndexer().start();
         }
      
         @Remove
         @Destroy
         public void stop() {}
      }
      
      

      Also note that if I add the following bean to seam-ejb.jar it will correctly wait with the deployment of the web archive:

      import javax.persistence.PersistenceUnit;
      import javax.persistence.EntityManagerFactory;
      import javax.ejb.Singleton;
      import javax.ejb.Startup;
      
      @Singleton
      @Startup
      public class Aargh
      {
         @PersistenceUnit
         private EntityManagerFactory emf;
      }
      
      

      I believe this workaround shouldn't be necessary, and the initialize-in-order should also work with persistence units.

      This issue affects all Seam2 EAR applications which use seam-managed entity manager in a @Startup bean, or any other legacy applications accessing persistence units through JNDI.

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                • Assignee:
                  swd847 Stuart Douglas
                  Reporter:
                  maschmid Marek Schmidt
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                  • Created:
                    Updated:
                    Resolved: