Package org.springframework.jndi

Class JndiObjectTargetSource

java.lang.Object
org.springframework.jndi.JndiAccessor
org.springframework.jndi.JndiLocatorSupport
org.springframework.jndi.JndiObjectLocator
org.springframework.jndi.JndiObjectTargetSource
All Implemented Interfaces:
org.springframework.aop.TargetClassAware, org.springframework.aop.TargetSource, org.springframework.beans.factory.InitializingBean
public class JndiObjectTargetSource extends JndiObjectLocator implements org.springframework.aop.TargetSource
AOP TargetSource that provides configurable JNDI lookups for getTarget() calls.

Can be used as alternative to JndiObjectFactoryBean, to allow for relocating a JNDI object lazily or for each operation (see "lookupOnStartup" and "cache" properties). This is particularly useful during development, as it allows for hot restarting of the JNDI server (for example, a remote JMS server).

Example: 

 <bean id="queueConnectionFactoryTarget" class="org.springframework.jndi.JndiObjectTargetSource">
   <property name="jndiName" value="JmsQueueConnectionFactory"/>
   <property name="lookupOnStartup" value="false"/>
 </bean>

 <bean id="queueConnectionFactory" class="org.springframework.aop.framework.ProxyFactoryBean">
   <property name="proxyInterfaces" value="jakarta.jms.QueueConnectionFactory"/>
   <property name="targetSource" ref="queueConnectionFactoryTarget"/>
 </bean>
A createQueueConnection call on the "queueConnectionFactory" proxy will cause a lazy JNDI lookup for "JmsQueueConnectionFactory" and a subsequent delegating call to the retrieved QueueConnectionFactory's createQueueConnection.

Alternatively, use a JndiObjectFactoryBean with a "proxyInterface". "lookupOnStartup" and "cache" can then be specified on the JndiObjectFactoryBean, creating a JndiObjectTargetSource underneath (instead of defining separate ProxyFactoryBean and JndiObjectTargetSource beans).

Since:
1.1
Author:
Juergen Hoeller
See Also:

  • Constructor Details

    • JndiObjectTargetSource

      public JndiObjectTargetSource()

  • Method Details

    • setLookupOnStartup

      public void setLookupOnStartup(boolean lookupOnStartup)
      Set whether to look up the JNDI object on startup. Default is "true".

      Can be turned off to allow for late availability of the JNDI object. In this case, the JNDI object will be fetched on first access.

      See Also:

    • setCache

      public void setCache(boolean cache)
      Set whether to cache the JNDI object once it has been located. Default is "true".

      Can be turned off to allow for hot redeployment of JNDI objects. In this case, the JNDI object will be fetched for each invocation.

      See Also:

    • afterPropertiesSet

      public void afterPropertiesSet() throws NamingException
      Specified by:
      afterPropertiesSet in interface org.springframework.beans.factory.InitializingBean
      Overrides:
      afterPropertiesSet in class JndiObjectLocator
      Throws:
      NamingException

    • getTargetClass

      @Nullable public Class<?> getTargetClass()
      Specified by:
      getTargetClass in interface org.springframework.aop.TargetClassAware
      Specified by:
      getTargetClass in interface org.springframework.aop.TargetSource

    • isStatic

      public boolean isStatic()
      Specified by:
      isStatic in interface org.springframework.aop.TargetSource

    • getTarget

      @Nullable public Object getTarget()
      Specified by:
      getTarget in interface org.springframework.aop.TargetSource

    • releaseTarget

      public void releaseTarget(Object target)
      Specified by:
      releaseTarget in interface org.springframework.aop.TargetSource