6 Replies Latest reply on Jan 13, 2009 10:03 AM by svadu

    Spring managed entitymanager

    ltackmann
    ltackmann Apr 21, 2008 1:33 PM

      Hi


      I have a spring application that is used in various contexts (as business logic in a REST application) and now also in a webapp written in Seam.


      Since all the database logic is placed in the spring services I would like to keep it there and simply have Seam using the spring managed entitymanager in its entity-transactions.


      I use Spring 2.5.3 and Seam 2.0.1.GA - I have tried adding the the following to components.xml without luck:


      <?xml version="1.0" encoding="UTF-8"?>
<components xmlns="http://jboss.com/products/seam/component"
     xmlns:persistence="http://jboss.com/products/seam/persistence"
     xmlns:security="http://jboss.com/products/seam/security"
     xmlns:spring="http://jboss.com/products/seam/spring"
     xmlns:transaction="http://jboss.com/products/seam/transaction"
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instanc"
     xsi:schemaLocation="http://jboss.com/products/seam/components 
     http://jboss.com/products/seam/components-2.0.xsd
     http://jboss.com/products/seam/persistence 
     http://jboss.com/products/seam/persistence-2.0.xsd
     http://jboss.com/products/seam/security 
     http://jboss.com/products/seam/security-2.0.xsd
     http://jboss.com/products/seam/spring 
     http://jboss.com/products/seam/spring-2.1.xsd
     http://jboss.com/products/seam/transaction
     http://jboss.com/products/seam/transaction-2.0.xsd">

     <!-- enables our security authenticator -->
     <security:identity
          authenticate-method="#{authenticator.authenticate}" />

     <!-- TODO use springs entity manager here -->
     <transaction:entity-transaction entity-manager="#{em}" />
     <persistence:managed-persistence-context name="em"
          auto-create="true" entity-manager-factory="#{entityManagerFactory}" />

     <!-- bootstrap spring -->
     <spring:context-loader config-locations="applicationContext.xml" />
</components>



      hoping that it would use my entityManagerFactory as defined in Springs applicationContext.xml:


      <?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xmlns:aop="http://www.springframework.org/schema/aop"
     xmlns:context="http://www.springframework.org/schema/context"
     xmlns:jee="http://www.springframework.org/schema/jee"
     xmlns:tx="http://www.springframework.org/schema/tx"
     xsi:schemaLocation="http://www.springframework.org/schema/beans 
          http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
          http://www.springframework.org/schema/aop 
          http://www.springframework.org/schema/aop/spring-aop-2.5.xsd
             http://www.springframework.org/schema/context 
             http://www.springframework.org/schema/context/spring-context-2.5.xsd
        http://www.springframework.org/schema/jee 
        http://www.springframework.org/schema/jee/spring-jee-2.5.xsd
            http://www.springframework.org/schema/tx 
            http://www.springframework.org/schema/tx/spring-tx-2.5.xsd">

     <!-- annotation based dependency injection -->
     <context:component-scan base-package="org.randompage" />
     <context:annotation-config />

     <!-- constant injection -->
     <bean id="appName" class="java.lang.String">
          <constructor-arg>
               <value>SeamWiki</value>
          </constructor-arg>
     </bean>

     <!-- enables @AspectJ support -->
     <aop:aspectj-autoproxy />

     <!-- enables @PersistenceUnit/@PersistenceContext annotations -->
     <bean
          class="org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor" />

     <!-- data source via JNDI -->
     <jee:jndi-lookup id="dataSource"
          jndi-name="java:comp/env/jdbc/mydb" />

     <!-- use persistence.xml for JPA configuration -->
     <bean id="entityManagerFactory"
          class="org.springframework.orm.jpa.LocalEntityManagerFactoryBean">
          <!-- needed for multiple persistence units -->
          <property name="persistenceUnitName" value="default" />
     </bean>

     <!-- enables JPA transaction manager -->
     <bean id="transactionManager"
          class="org.springframework.orm.jpa.JpaTransactionManager">
          <property name="entityManagerFactory"
               ref="entityManagerFactory" />
     </bean>

     <!-- enables @Transactional annotation for transaction management -->
     <tx:annotation-driven />
</beans>



      Can this really not be done ?, since it is pretty common to use the same backend services for multiple endpoints (web, SOAP, REST...) I would really like to find a solution, that does not involve putting Seam into my Spring application (the other way around is desired).


      Thanks in advance.


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