org.springframework.transaction.jta
Class JotmFactoryBean

java.lang.Object
  org.springframework.transaction.jta.JotmFactoryBean

All Implemented Interfaces:

org.springframework.beans.factory.DisposableBean, org.springframework.beans.factory.FactoryBean

public class JotmFactoryBean
extends Object
implements org.springframework.beans.factory.FactoryBean, org.springframework.beans.factory.DisposableBean

FactoryBean that retrieves the JTA UserTransaction/TransactionManager for ObjectWeb's JOTM. Will retrieve an already active JOTM instance if found (e.g. if running in JOnAS), else create a new local JOTM instance.

With JOTM, the same object implements both the UserTransaction and the TransactionManager interface, as returned by this FactoryBean.

A local JOTM instance is well-suited for working in conjunction with ObjectWeb's XAPool, e.g. with bean definitions like the following:

 <bean id="jotm" class="org.springframework.transaction.jta.JotmFactoryBean"/>

 <bean id="transactionManager" class="org.springframework.transaction.jta.JtaTransactionManager">
   <property name="userTransaction" ref="jotm"/>
 </bean>

 <bean id="innerDataSource" class="org.enhydra.jdbc.standard.StandardXADataSource" destroy-method="shutdown">
   <property name="transactionManager" ref="jotm"/>
   <property name="driverName" value="..."/>
   <property name="url" value="..."/>
   <property name="user" value="..."/>
   <property name="password" value="..."/>
 </bean>

 <bean id="dataSource" class="org.enhydra.jdbc.pool.StandardXAPoolDataSource" destroy-method="shutdown">
   <property name="dataSource" ref="innerDataSource"/>
   <property name="user" value="..."/>
   <property name="password" value="..."/>
   <property name="maxSize" value="..."/>
 </bean>

Note that Spring's JtaTransactionManager will automatically detect that the passed-in UserTransaction reference also implements the TransactionManager interface. Hence, it is not necessary to specify a separate reference for JtaTransactionManager's "transactionManager" property.

Implementation note: This FactoryBean uses JOTM's static access method to obtain the JOTM Current object, which implements both the UserTransaction and the TransactionManager interface, as mentioned above.

Since:

21.01.2004

Author:

Juergen Hoeller

See Also:

JtaTransactionManager.setUserTransaction(javax.transaction.UserTransaction), JtaTransactionManager.setTransactionManager(javax.transaction.TransactionManager), Current

Field Summary

private org.objectweb.jotm.Jotm	jotm
private org.objectweb.jotm.Current	jotmCurrent

Constructor Summary

JotmFactoryBean()

Method Summary

void	destroy() Stop the local JOTM instance, if created by this FactoryBean.
org.objectweb.jotm.Jotm	getJotm() Return the JOTM instance created by this factory bean, if any.
Object	getObject()
Class	getObjectType()
boolean	isSingleton()
void	setDefaultTimeout(int defaultTimeout) Set the default transaction timeout for the JOTM instance.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

jotmCurrent

private org.objectweb.jotm.Current jotmCurrent

jotm

private org.objectweb.jotm.Jotm jotm

Constructor Detail

JotmFactoryBean

public JotmFactoryBean()
                throws NamingException

Throws:

NamingException

Method Detail

setDefaultTimeout

public void setDefaultTimeout(int defaultTimeout)

Set the default transaction timeout for the JOTM instance.

Should only be called for a local JOTM instance, not when accessing an existing (shared) JOTM instance.

getJotm

public org.objectweb.jotm.Jotm getJotm()

Return the JOTM instance created by this factory bean, if any. Will be null if an already active JOTM instance is used.

Application code should never need to access this.

getObject

public Object getObject()

Specified by:

getObject in interface org.springframework.beans.factory.FactoryBean

getObjectType

public Class getObjectType()

Specified by:

getObjectType in interface org.springframework.beans.factory.FactoryBean

isSingleton

public boolean isSingleton()

Specified by:

isSingleton in interface org.springframework.beans.factory.FactoryBean

destroy

public void destroy()

Stop the local JOTM instance, if created by this FactoryBean.

Specified by:

destroy in interface org.springframework.beans.factory.DisposableBean