org.apache.tapestry5.internal.services
Class FlashPersistentFieldStrategy

java.lang.Object
  org.apache.tapestry5.internal.services.AbstractSessionPersistentFieldStrategy
      org.apache.tapestry5.internal.services.FlashPersistentFieldStrategy

All Implemented Interfaces:

PersistentFieldStrategy

public class FlashPersistentFieldStrategy
extends AbstractSessionPersistentFieldStrategy

The "flash" strategy stores data inside the session, just like SessionPersistentFieldStrategy, but also removes the values from the session on first use. In this way, a short-term value (such as an error message) will "survive" from an action request to a render request and then disappear.

Constructor Summary

FlashPersistentFieldStrategy(Request request)

Method Summary

protected void

didReadChange(Session session, String attributeName) Called after each key is read by AbstractSessionPersistentFieldStrategy.gatherFieldChanges(String).

Methods inherited from class org.apache.tapestry5.internal.services.AbstractSessionPersistentFieldStrategy

convertApplicationValueToPersisted, convertPersistedToApplicationValue, discardChanges, gatherFieldChanges, postChange

Methods inherited from class java.lang.Object

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

Constructor Detail

FlashPersistentFieldStrategy

public FlashPersistentFieldStrategy(Request request)

Method Detail

didReadChange

protected void didReadChange(Session session,
                             String attributeName)

Description copied from class: AbstractSessionPersistentFieldStrategy

Called after each key is read by AbstractSessionPersistentFieldStrategy.gatherFieldChanges(String). This implementation does nothing, subclasses may override.

Overrides:

didReadChange in class AbstractSessionPersistentFieldStrategy

Parameters:

session - the session from which a value was just read

attributeName - the name of the attribute used to read a value