org.springframework.transaction.interceptor
Class TransactionProxyFactoryBean

java.lang.Object
  extended by org.springframework.aop.framework.ProxyConfig
      extended by org.springframework.aop.framework.AbstractSingletonProxyFactoryBean
          extended by org.springframework.transaction.interceptor.TransactionProxyFactoryBean
All Implemented Interfaces:
Serializable, Aware, BeanClassLoaderAware, BeanFactoryAware, FactoryBean<Object>, InitializingBean

public class TransactionProxyFactoryBean
extends AbstractSingletonProxyFactoryBean
implements BeanFactoryAware

Proxy factory bean for simplified declarative transaction handling. This is a convenient alternative to a standard AOP ProxyFactoryBean with a separate TransactionInterceptor definition.

This class is intended to cover the typical case of declarative transaction demarcation: namely, wrapping a singleton target object with a transactional proxy, proxying all the interfaces that the target implements.

There are three main properties that need to be specified:

If the "transactionManager" property is not set explicitly and this FactoryBean is running in a ListableBeanFactory, a single matching bean of type PlatformTransactionManager will be fetched from the BeanFactory.

In contrast to TransactionInterceptor, the transaction attributes are specified as properties, with method names as keys and transaction attribute descriptors as values. Method names are always applied to the target class.

Internally, a TransactionInterceptor instance is used, but the user of this class does not have to care. Optionally, a method pointcut can be specified to cause conditional invocation of the underlying TransactionInterceptor.

The "preInterceptors" and "postInterceptors" properties can be set to add additional interceptors to the mix, like PerformanceMonitorInterceptor or HibernateInterceptor / JdoInterceptor.

HINT: This class is often used with parent / child bean definitions. Typically, you will define the transaction manager and default transaction attributes (for method name patterns) in an abstract parent bean definition, deriving concrete child bean definitions for specific target objects. This reduces the per-bean definition effort to a minimum.

 <bean id="baseTransactionProxy" class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean"
     abstract="true">
   <property name="transactionManager" ref="transactionManager"/>
   <property name="transactionAttributes">
     <props>
       <prop key="insert*">PROPAGATION_REQUIRED</prop>
       <prop key="update*">PROPAGATION_REQUIRED</prop>
       <prop key="*">PROPAGATION_REQUIRED,readOnly</prop>
     </props>
   </property>
 </bean>

 <bean id="myProxy" parent="baseTransactionProxy">
   <property name="target" ref="myTarget"/>
 </bean>

 <bean id="yourProxy" parent="baseTransactionProxy">
   <property name="target" ref="yourTarget"/>
 </bean>

Since:
21.08.2003
Author:
Juergen Hoeller, Dmitriy Kopylenko, Rod Johnson
See Also:
setTransactionManager(org.springframework.transaction.PlatformTransactionManager), AbstractSingletonProxyFactoryBean.setTarget(java.lang.Object), setTransactionAttributes(java.util.Properties), TransactionInterceptor, ProxyFactoryBean, Serialized Form

Constructor Summary
TransactionProxyFactoryBean()
           
 
Method Summary
protected  Object createMainInterceptor()
          Creates an advisor for this FactoryBean's TransactionInterceptor.
 void setBeanFactory(BeanFactory beanFactory)
          This callback is optional: If running in a BeanFactory and no transaction manager has been set explicitly, a single matching bean of type PlatformTransactionManager will be fetched from the BeanFactory.
 void setPointcut(Pointcut pointcut)
          Set a pointcut, i.e a bean that can cause conditional invocation of the TransactionInterceptor depending on method and attributes passed.
 void setTransactionAttributes(Properties transactionAttributes)
          Set properties with method names as keys and transaction attribute descriptors (parsed via TransactionAttributeEditor) as values: e.g.
 void setTransactionAttributeSource(TransactionAttributeSource transactionAttributeSource)
          Set the transaction attribute source which is used to find transaction attributes.
 void setTransactionManager(PlatformTransactionManager transactionManager)
          Set the transaction manager.
 
Methods inherited from class org.springframework.aop.framework.AbstractSingletonProxyFactoryBean
afterPropertiesSet, createTargetSource, getObject, getObjectType, isSingleton, setAdvisorAdapterRegistry, setBeanClassLoader, setPostInterceptors, setPreInterceptors, setProxyClassLoader, setProxyInterfaces, setTarget
 
Methods inherited from class org.springframework.aop.framework.ProxyConfig
copyFrom, isExposeProxy, isFrozen, isOpaque, isOptimize, isProxyTargetClass, setExposeProxy, setFrozen, setOpaque, setOptimize, setProxyTargetClass, toString
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Constructor Detail

TransactionProxyFactoryBean

public TransactionProxyFactoryBean()
Method Detail

setTransactionManager

public void setTransactionManager(PlatformTransactionManager transactionManager)
Set the transaction manager. This will perform actual transaction management: This class is just a way of invoking it.

See Also:
TransactionAspectSupport.setTransactionManager(org.springframework.transaction.PlatformTransactionManager)

setTransactionAttributes

public void setTransactionAttributes(Properties transactionAttributes)
Set properties with method names as keys and transaction attribute descriptors (parsed via TransactionAttributeEditor) as values: e.g. key = "myMethod", value = "PROPAGATION_REQUIRED,readOnly".

Note: Method names are always applied to the target class, no matter if defined in an interface or the class itself.

Internally, a NameMatchTransactionAttributeSource will be created from the given properties.

See Also:
setTransactionAttributeSource(org.springframework.transaction.interceptor.TransactionAttributeSource), TransactionAspectSupport.setTransactionAttributes(java.util.Properties), TransactionAttributeEditor, NameMatchTransactionAttributeSource

setTransactionAttributeSource

public void setTransactionAttributeSource(TransactionAttributeSource transactionAttributeSource)
Set the transaction attribute source which is used to find transaction attributes. If specifying a String property value, a PropertyEditor will create a MethodMapTransactionAttributeSource from the value.

See Also:
setTransactionAttributes(java.util.Properties), TransactionAspectSupport.setTransactionAttributeSource(org.springframework.transaction.interceptor.TransactionAttributeSource), TransactionAttributeSourceEditor, MethodMapTransactionAttributeSource, NameMatchTransactionAttributeSource, AttributesTransactionAttributeSource, AnnotationTransactionAttributeSource

setPointcut

public void setPointcut(Pointcut pointcut)
Set a pointcut, i.e a bean that can cause conditional invocation of the TransactionInterceptor depending on method and attributes passed. Note: Additional interceptors are always invoked.

See Also:
AbstractSingletonProxyFactoryBean.setPreInterceptors(java.lang.Object[]), AbstractSingletonProxyFactoryBean.setPostInterceptors(java.lang.Object[])

setBeanFactory

public void setBeanFactory(BeanFactory beanFactory)
This callback is optional: If running in a BeanFactory and no transaction manager has been set explicitly, a single matching bean of type PlatformTransactionManager will be fetched from the BeanFactory.

Specified by:
setBeanFactory in interface BeanFactoryAware
Parameters:
beanFactory - owning BeanFactory (never null). The bean can immediately call methods on the factory.
See Also:
BeanFactoryUtils.beanOfTypeIncludingAncestors(org.springframework.beans.factory.ListableBeanFactory, java.lang.Class), PlatformTransactionManager

createMainInterceptor

protected Object createMainInterceptor()
Creates an advisor for this FactoryBean's TransactionInterceptor.

Specified by:
createMainInterceptor in class AbstractSingletonProxyFactoryBean