JndiObjectLocator (Spring Framework API 2.0) - Spring Framework 2.0.5 API 文档英文版

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org.springframework.jndi
Class JndiObjectLocator

java.lang.Object
  org.springframework.jndi.JndiAccessor
      org.springframework.jndi.JndiLocatorSupport
          org.springframework.jndi.JndiObjectLocator

All Implemented Interfaces:: InitializingBean

Direct Known Subclasses:: AbstractSlsbInvokerInterceptor, JndiObjectFactoryBean, JndiObjectTargetSource, JndiRmiClientInterceptor

public abstract class JndiObjectLocator
extends JndiLocatorSupport
implements InitializingBean
extends JndiLocatorSupport
implements InitializingBean

Convenient superclass for JNDI-based service locators, providing configurable lookup of a specific JNDI resource.

Exposes a "jndiName" property. This may or may not include the "java:comp/env/" prefix expected by J2EE applications when accessing a locally mapped (Environmental Naming Context) resource. If it doesn't, the "java:comp/env/" prefix will be prepended if the "resourceRef" property is true (the default is false) and no other scheme (e.g. "java:") is given.

Subclasses may invoke the lookup method whenever it is appropriate. Some classes might do this on initialization, while others might do it on demand. The latter strategy is more flexible in that it allows for initialization of the locator before the JNDI object is available.

Since:: 1.1
Author:: Juergen Hoeller
See Also:: setJndiName(java.lang.String), JndiAccessor.setJndiTemplate(org.springframework.jndi.JndiTemplate), JndiAccessor.setJndiEnvironment(java.util.Properties), JndiLocatorSupport.setResourceRef(boolean), lookup()

Field Summary

Fields inherited from class org.springframework.jndi.JndiLocatorSupport

CONTAINER_PREFIX

Fields inherited from class org.springframework.jndi.JndiAccessor

logger

Constructor Summary

JndiObjectLocator()


Method Summary

void afterPropertiesSet()
          Invoked by a BeanFactory after it has set all bean properties supplied (and satisfied BeanFactoryAware and ApplicationContextAware).

Class getExpectedType()
          Return the type that the located JNDI object is supposed to be assignable to, if any.

String getJndiName()
          Return the JNDI name to look up.

protected Object lookup()
          Perform the actual JNDI lookup for this locator's target resource.

void setExpectedType(Class expectedType)
          Set the type that the located JNDI object is supposed to be assignable to, if any.

void setJndiName(String jndiName)
          Set the JNDI name to look up.

Methods inherited from class org.springframework.jndi.JndiLocatorSupport

convertJndiName, isResourceRef, lookup, lookup, setResourceRef

Methods inherited from class org.springframework.jndi.JndiAccessor

getJndiEnvironment, getJndiTemplate, setJndiEnvironment, setJndiTemplate

Methods inherited from class java.lang.Object

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

Fields inherited from class org.springframework.jndi.JndiLocatorSupport
`CONTAINER_PREFIX`

Fields inherited from class org.springframework.jndi.JndiAccessor
`logger`

Constructor Summary
`JndiObjectLocator()`

Method Summary
`void`	`afterPropertiesSet()` Invoked by a BeanFactory after it has set all bean properties supplied (and satisfied BeanFactoryAware and ApplicationContextAware).
`Class`	`getExpectedType()` Return the type that the located JNDI object is supposed to be assignable to, if any.
`String`	`getJndiName()` Return the JNDI name to look up.
`protected Object`	`lookup()` Perform the actual JNDI lookup for this locator's target resource.
`void`	`setExpectedType(Class expectedType)` Set the type that the located JNDI object is supposed to be assignable to, if any.
`void`	`setJndiName(String jndiName)` Set the JNDI name to look up.

Methods inherited from class org.springframework.jndi.JndiLocatorSupport
`convertJndiName, isResourceRef, lookup, lookup, setResourceRef`

Methods inherited from class org.springframework.jndi.JndiAccessor
`getJndiEnvironment, getJndiTemplate, setJndiEnvironment, setJndiTemplate`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

JndiObjectLocator

public JndiObjectLocator()

Method Detail

setJndiName

public void setJndiName(String jndiName)

Set the JNDI name to look up. If it doesn't begin with "java:comp/env/" this prefix is added if resourceRef is set to true.

Parameters:: jndiName - JNDI name to look up
See Also:: JndiLocatorSupport.setResourceRef(boolean)

getJndiName

public String getJndiName()

Return the JNDI name to look up.

setExpectedType

public void setExpectedType(Class expectedType)

Set the type that the located JNDI object is supposed to be assignable to, if any.

getExpectedType

public Class getExpectedType()

Return the type that the located JNDI object is supposed to be assignable to, if any.

afterPropertiesSet

public void afterPropertiesSet()
                        throws IllegalArgumentException,
                               NamingException

Description copied from interface: InitializingBean

Invoked by a BeanFactory after it has set all bean properties supplied (and satisfied BeanFactoryAware and ApplicationContextAware).

This method allows the bean instance to perform initialization only possible when all bean properties have been set and to throw an exception in the event of misconfiguration.

Specified by:: afterPropertiesSet in interface InitializingBean

Throws:: IllegalArgumentException; NamingException

lookup

protected Object lookup()
                 throws NamingException

Perform the actual JNDI lookup for this locator's target resource.

Returns:: the located target object
Throws:: NamingException - if the JNDI lookup failed or if the located JNDI object is not assigable to the expected type
See Also:: setJndiName(java.lang.String), setExpectedType(java.lang.Class), JndiLocatorSupport.lookup(String, Class)