1 Reply Latest reply on Jun 6, 2011 5:55 AM by gadeyne.bram

    entityManager remains null using @In

    gadeyne.bram
    gadeyne.bram Jun 6, 2011 5:22 AM

      Hi,


      My setup:
      jboss 6.0.0.Final
      Seam 2.2.2.Final
      MySQL 5.5.12


      I'm trying to connect a MySQL database using persistence. From what I've learned it should be possible to use @In EntityManager entityManager; afterwards to obtain a conversation scoped entityManager. This however is always null.


      I have a local-tx-datasource configured like this:


      <?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE datasources PUBLIC "-//JBoss//DTD JBOSS JCA Config 1.5//EN"
                             "http://www.jboss.org/j2ee/dtd/jboss-ds_1_5.dtd">
<datasources>
 <local-tx-datasource>
  <jndi-name>cosaraWebTestDatasource</jndi-name>
  <use-java-context>true</use-java-context>
  <connection-url>jdbc:mysql://localhost:3306/seam</connection-url>
  <driver-class>com.mysql.jdbc.Driver</driver-class>
  <user-name>root</user-name>
  <password>root</password>
 </local-tx-datasource>
</datasources>



      then my persistence.xml is set up like this:


      <?xml version="1.0" encoding="UTF-8"?>
<!-- Persistence deployment descriptor for dev profile -->
<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="CosaraWebTest" transaction-type="JTA">
      <provider>org.hibernate.ejb.HibernatePersistence</provider>
      <jta-data-source>java:/cosaraWebTestDatasource</jta-data-source>
      <properties>
         <property name="hibernate.dialect" value="org.hibernate.dialect.MySQLDialect"/>
         <property name="hibernate.hbm2ddl.auto" value="validate"/>
         <property name="hibernate.show_sql" value="true"/>
         <property name="hibernate.format_sql" value="true"/>
         <property name="hibernate.default_catalog" value="seam"/>
         <property name="jboss.entity.manager.factory.jndi.name" value="java:/cosaraWebTestEntityManagerFactory"/>
      </properties>
   </persistence-unit>
    
</persistence>



      finally my components.xml contains the following:


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



      This is my session scoped bean:


      @Name("columnKeeper")
@Scope(ScopeType.SESSION)
public class ColumnKeeper implements Serializable, DropListener {
...
@In
EntityManager entityManager;
...
}



      entityManager is always null.


      I've also added "create = true" and "scope = ScopeType.CONVERSATION"


      I've also tried changing @In to @PersistenceContext


      When I look at my mysqlAdmin I can see that the JBOSS server has created a connection with the my MySQL server.


      Can someone help?


      With kind regards
      Bram Gadeyne