Hibernate Integration

22 Jul 2015 - 07:29 | Version 22 | | ,

With Spring

The advantage is that you don't need any JNDI server. The following XML snippet illustrates how to configure TransactionsEssentials 3.1 or higher with Spring and Hibernate.
<?xml version="1.0" encoding="UTF-8"?>


    <!-- configure an Atomikos JTA-aware datasource -->
   <bean id="datasource"
      init-method="init" destroy-method="close">
       <!-- set an arbitrary but unique name for the datasource -->
      <property name="uniqueResourceName"><value>XADBMS</value></property>
            set the underlying driver class to use, 
            in this example case we use Oracle 
      <property name="xaDataSourceClassName">
      <property name="xaProperties">
             set the driver-specific XADataSource properties 
             (check your driver docs for more info)
                        <prop key="user">scott</prop>
                        <prop key="password">tiger</prop>
                        <prop key="URL">...</prop>
       <!-- how many connections in the pool? -->
      <property name="poolSize" value="3"/>

        configure Hibernate to use the Atomikos JTA and 
        datasource for transaction control 
   <bean id="sessionFactory" 
       NOTE: for hibernate 2, use the following class: 

       <!-- add the mapped resources (hbm files) of your application -->
      <property name="mappingResources">

          make sure that hibernate uses the 
          Atomikos datasource (JTA enabled)! 
      <property name="dataSource"><ref bean="datasource"/></property>

       <!-- configure hibernate to use Atomikos TransactionsEssentials -->
      <property name="hibernateProperties">
            <prop key="hibernate.transaction.factory_class">
            <prop key="hibernate.transaction.manager_lookup_class">
             <!-- for hibernate 2, use the following:
             <prop key="hibernate.transaction.manager_lookup_class">
             <!-- add any other hibernate properties you need -->


       configure the Spring hibernate template with the session factory from above 
   <bean id="hibernateTemplate" 
      <property name="sessionFactory"><ref bean="sessionFactory"/></property>


Also see http://fogbugz.atomikos.com/default.asp?community.6.3045.1 for a forum post describing possible issues with the connection release configuration of Hibernate.

Without Spring

See Hibernate 3 Standalone sample for an example application that integrates with Hibernate (without Spring). This approach requires a JNDI server.

With JPA

See http://docs.jboss.org/hibernate/stable/entitymanager/reference/en/html/transactions.html for how to configure the JPA - this page suggests that there should be NO factory class configuration, only a lookup class. So for Hibernate JPA, the factory must be omitted in the above config examples.

With JPA and Infinispan as the Cache

See http://www.javacodegeeks.com/2010/06/gwt-spring-and-hibernate-enter-world-of.html for a blog post describing how to get this to work.

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