How to use Atomikos Transaction Essentials with Hibernate >= 4.3

Question

I switched from Hibernate 4.2 to Hibernate 4.3 and my project is not working any more. I\'m getting an

HibernateException: Unable to locate current JT

Answer 1

Can you try setting the jtaTransactionManager property of org.springframework.orm.hibernate4.LocalSessionFactoryBean to Spring's JtaTransactionManager? I have similar problem but solved by this. By the way, the HibernateTemplate is back on Spring 4.0.1. Although it's not recommended, but I like to use it. It helped take care of a lot of things. (I am using Spring 4.0.5 + Hibernate 4.3.5 + Atomikos 3.9.3)

<bean id="atomikosTransactionManager" class="com.atomikos.icatch.jta.UserTransactionManager" init-method="init" destroy-method="close" depends-on="userTransactionService">
   <property name="forceShutdown" value="true" />
</bean>

<bean id="atomikosUserTransaction" class="com.atomikos.icatch.jta.UserTransactionImp" depends-on="userTransactionService">
   <property name="transactionTimeout" value="180" />
</bean>

<bean id="JtaTransactionManager" class="org.springframework.transaction.jta.JtaTransactionManager">
   <property name="transactionManager" ref="atomikosTransactionManager" />
   <property name="userTransaction" ref="atomikosUserTransaction" />
   <property name="allowCustomIsolationLevels" value="true"></property>
</bean>

<bean id="rentSessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
    <property name="dataSource"><ref bean="rentXADataSource" /></property>
    <property name="mappingLocations" value="classpath:com/kj/model/web/*.hbm.xml"/>
    <property name="hibernateProperties">
        <props>
            <prop key="hibernate.dialect">org.hibernate.dialect.SQLServerDialect</prop>
            <prop key="hibernate.cache.region.factory_class">org.hibernate.cache.ehcache.EhCacheRegionFactory</prop>
            <prop key="hibernate.show_sql">false</prop>
            <prop key="hibernate.transaction.factory_class">org.hibernate.transaction.CMTTransactionFactory</prop>          
            <prop key="hibernate.cache.use_query_cache">true</prop> 
            <prop key="hibernate.cache.use_second_level_cache">true</prop>
            <prop key="hibernate.format_sql">false</prop>
            <prop key="hibernate.bytecode.use_reflection_optimizer">true</prop>
        </props>
    </property>
    <property name="jtaTransactionManager" ref="JtaTransactionManager"></property>
</bean>

Answer 2

To use Hibernate JTA Platform with Spring write and compile this code

package my.domain.spring.hibernate.jta;

import javax.transaction.TransactionManager;
import javax.transaction.UserTransaction;

import org.hibernate.engine.transaction.jta.platform.internal.AbstractJtaPlatform;
import org.springframework.transaction.jta.JtaTransactionManager;
import org.springframework.util.Assert;

@SuppressWarnings("serial")
public class SpringJtaPlatformAdapter extends AbstractJtaPlatform {

    private static TransactionManager sTransactionManager;
    private static UserTransaction sUserTransaction;


    @Override
    protected TransactionManager locateTransactionManager() {
        Assert.notNull(sTransactionManager, "TransactionManager has not been setted");
        return sTransactionManager;
    }


    @Override
    protected UserTransaction locateUserTransaction() {
        Assert.notNull(sUserTransaction, "UserTransaction has not been setted");
        return sUserTransaction;
    }


    public void setJtaTransactionManager(JtaTransactionManager jtaTransactionManager) {
        sTransactionManager = jtaTransactionManager.getTransactionManager();
        sUserTransaction = jtaTransactionManager.getUserTransaction();
    }


    public void setTransactionManager(TransactionManager transactionManager) {
        sTransactionManager = transactionManager;
    }


    public void setUserTransaction(UserTransaction userTransaction) {
        sUserTransaction = userTransaction;
    }

}

Add into your spring-configuration

  <bean id="txObjcoreManager" class="org.springframework.transaction.jta.JtaTransactionManager">
        <property name="transactionManager">
            <bean class="com.atomikos.icatch.jta.UserTransactionManager" init-method="init" destroy-method="close">
                <property name="forceShutdown" value="true" />
            </bean>
        </property>
        <property name="userTransaction">
            <bean class="com.atomikos.icatch.jta.UserTransactionImp">
                <property name="transactionTimeout" value="300" />
            </bean>
        </property>
    </bean>

    <bean id="springJtaPlatformAdapter" class="my.domain.spring.hibernate.jta.SpringJtaPlatformAdapter">
        <property name="jtaTransactionManager" ref="txObjcoreManager" />
    </bean>

Don't forget to add a dependency

<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean"
        depends-on="springJtaPlatformAdapter">

And finally change a hibernate configuration like this one hibernate.transaction.jta.platform=my.domain.spring.hibernate.jta.SpringJtaPlatformAdapter

Answer 3

Some hint for Spring users - just use this implementation if you setup stuff with the factory bean:

public class AtomikosPlatform extends AbstractJtaPlatform {

  private static final long serialVersionUID = -1L;

  @Override
  protected TransactionManager locateTransactionManager() {
    return new J2eeTransactionManager();
  }

  @Override
  protected UserTransaction locateUserTransaction() {
    return new J2eeUserTransaction();
  }

}

Answer 4

In Hibernate 4.3 the long deprecated TransactionManagerLookup got removed. Now the JTA provider must implement org.hibernate.engine.transaction.jta.platform.spi.JtaPlatform. An abstract implementation of JTA Platform is already available within Hibernate namely org.hibernate.engine.transaction.jta.platform.internal.AbstractJtaPlatform. Using this it is quite simple to write a JTA Platform for Atomikos:

package test;

import javax.transaction.TransactionManager;
import javax.transaction.UserTransaction;
import org.hibernate.engine.transaction.jta.platform.internal.AbstractJtaPlatform;
import com.atomikos.icatch.jta.UserTransactionManager;

public class AtomikosJtaPlatform extends AbstractJtaPlatform {

  private static final long serialVersionUID = 1L;
  private UserTransactionManager utm;

  public AtomikosJtaPlatform() {
    utm = new UserTransactionManager();
  }

  @Override
  protected TransactionManager locateTransactionManager() {
    return utm;
  }

  @Override
  protected UserTransaction locateUserTransaction() {
    return utm;
  }
}

In addition the name of the platform implementation class must be added to the hibernate configuration:

<property name="hibernate.transaction.jta.platform">test.AtomikosJtaPlatform</property>

Answer 5

The following is an alternative approach that works with Spring configuration. This is different from Anton's approach in that is does not rely on instance method writes to a static field (which is generally considered bad practice).

@SuppressWarnings("serial")
public class AtomikosJtaPlatform extends AbstractJtaPlatform {

    private static TransactionManager transactionManager;
    private static UserTransaction userTransaction;

    public static void factoryInit(TransactionManager transactionManager, UserTransaction userTransaction) {
        AtomikosJtaPlatform.transactionManager = transactionManager;
        AtomikosJtaPlatform.userTransaction = userTransaction;
    }

    @Override
    protected TransactionManager locateTransactionManager() {
        return transactionManager;
    }

    @Override
    protected UserTransaction locateUserTransaction() {
        return userTransaction;
    }

}

Then in Spring configuration:

    <bean id="AtomikosTransactionManager" class="com.atomikos.icatch.jta.UserTransactionManager" init-method="init"
        destroy-method="close">
        <property name="startupTransactionService" value="false" />
        <property name="forceShutdown" value="false" />
    </bean>

    <bean id="AtomikosUserTransaction" class="com.atomikos.icatch.jta.UserTransactionImp">
        <property name="transactionTimeout" value="300" />
    </bean>

    <!-- AtomikosJtaPlatform is created by Hibernate using reflection. This ensures it uses our Spring configured beans --> 
    <bean id="JtaPlatformInitializer" class="org.springframework.beans.factory.config.MethodInvokingBean">
        <property name="targetClass" value="com.mycompany.a.b.AtomikosJtaPlatform" />
        <property name="targetMethod" value="factoryInit" />
        <property name="arguments">
            <list>
                <ref bean="AtomikosTransactionManager" />
                <ref bean="AtomikosUserTransaction" />
            </list>
        </property>
    </bean>

<bean id="emf" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean" depends-on="JtaPlatformInitializer">
        <property name="jpaProperties">
            <props>
                <prop key="hibernate.transaction.jta.platform">com.mycompnay.a.b.AtomikosJtaPlatform</prop>
 ...