OpenPersistenceManagerInViewInterceptor (Spring Framework) - Spring Framework 1.2.9 API 文档英文版

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org.springframework.orm.jdo.support
Class OpenPersistenceManagerInViewInterceptor

java.lang.Object
  org.springframework.web.servlet.handler.HandlerInterceptorAdapter
      org.springframework.orm.jdo.support.OpenPersistenceManagerInViewInterceptor

All Implemented Interfaces:: HandlerInterceptor

public class OpenPersistenceManagerInViewInterceptor
extends HandlerInterceptorAdapter
extends HandlerInterceptorAdapter

Spring web HandlerInterceptor that binds a JDO PersistenceManager to the thread for the entire processing of the request. Intended for the "Open PersistenceManager in View" pattern, i.e. to allow for lazy loading in web views despite the original transactions already being completed.

This filter works similar to the AOP JdoInterceptor: It just makes JDO PersistenceManagers available via the thread. It is suitable for non-transactional execution but also for middle tier transactions via JdoTransactionManager or JtaTransactionManager. In the latter case, PersistenceManagers pre-bound by this filter will automatically be used for the transactions.

In contrast to OpenPersistenceManagerInViewFilter, this interceptor is set up in a Spring application context and can thus take advantage of bean wiring. It derives from JdoAccessor to inherit common JDO configuration properties.

Since:: 1.1
Author:: Juergen Hoeller
See Also:: OpenPersistenceManagerInViewFilter, JdoInterceptor, JdoTransactionManager, PersistenceManagerFactoryUtils.getPersistenceManager(javax.jdo.PersistenceManagerFactory, boolean), TransactionSynchronizationManager

Field Summary

protected Log logger


static String PARTICIPATE_SUFFIX
          Suffix that gets appended to the PersistenceManagerFactory toString representation for the "participate in existing persistence manager handling" request attribute.

Constructor Summary

OpenPersistenceManagerInViewInterceptor()


Method Summary

void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex)
          This implementation is empty.

protected String getParticipateAttributeName()
          Return the name of the request attribute that identifies that a request is already filtered.

javax.jdo.PersistenceManagerFactory getPersistenceManagerFactory()
          Return the JDO PersistenceManagerFactory that should be used to create PersistenceManagers.

boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler)
          This implementation always returns true.

void setPersistenceManagerFactory(javax.jdo.PersistenceManagerFactory pmf)
          Set the JDO PersistenceManagerFactory that should be used to create PersistenceManagers.

Methods inherited from class org.springframework.web.servlet.handler.HandlerInterceptorAdapter

postHandle

Methods inherited from class java.lang.Object

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

Field Summary
`protected Log`	`logger`
`static String`	`PARTICIPATE_SUFFIX` Suffix that gets appended to the PersistenceManagerFactory toString representation for the "participate in existing persistence manager handling" request attribute.

Constructor Summary
`OpenPersistenceManagerInViewInterceptor()`

Method Summary
`void`	`afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex)` This implementation is empty.
`protected String`	`getParticipateAttributeName()` Return the name of the request attribute that identifies that a request is already filtered.
`javax.jdo.PersistenceManagerFactory`	`getPersistenceManagerFactory()` Return the JDO PersistenceManagerFactory that should be used to create PersistenceManagers.
`boolean`	`preHandle(HttpServletRequest request, HttpServletResponse response, Object handler)` This implementation always returns true.
`void`	`setPersistenceManagerFactory(javax.jdo.PersistenceManagerFactory pmf)` Set the JDO PersistenceManagerFactory that should be used to create PersistenceManagers.

Methods inherited from class org.springframework.web.servlet.handler.HandlerInterceptorAdapter
`postHandle`

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

Field Detail

PARTICIPATE_SUFFIX

public static final String PARTICIPATE_SUFFIX

Suffix that gets appended to the PersistenceManagerFactory toString representation for the "participate in existing persistence manager handling" request attribute.

See Also:: getParticipateAttributeName(), Constant Field Values

logger

protected final Log logger

Constructor Detail