org.apache.struts.chain.commands
Class AbstractExceptionHandler

java.lang.Object
  org.apache.struts.chain.commands.ActionCommandBase
      org.apache.struts.chain.commands.AbstractExceptionHandler

All Implemented Interfaces:

org.apache.commons.chain.Command, ActionCommand

Direct Known Subclasses:

ExceptionHandler

public abstract class AbstractExceptionHandler
extends ActionCommandBase

Invoke the local or global exception handler configured for the exception class that occurred.

Version:

$Rev: 471754 $ $Date: 2005-11-12 13:01:44 -0500 (Sat, 12 Nov 2005) $

Field Summary

Fields inherited from interface org.apache.commons.chain.Command

CONTINUE_PROCESSING, PROCESSING_COMPLETE

Constructor Summary

AbstractExceptionHandler()

Method Summary

boolean	execute(ActionContext actionCtx) Invoke the appropriate Action for this request, and cache the returned ActionForward.
protected abstract ForwardConfig	handle(ActionContext context, Exception exception, ExceptionConfig exceptionConfig, ActionConfig actionConfig, ModuleConfig moduleConfig) Perform the required handling of the specified exception.

Methods inherited from class org.apache.struts.chain.commands.ActionCommandBase

execute

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractExceptionHandler

public AbstractExceptionHandler()

Method Detail

execute

public boolean execute(ActionContext actionCtx)
                throws Exception

Invoke the appropriate Action for this request, and cache the returned ActionForward.

Specified by:

execute in interface ActionCommand

Specified by:

execute in class ActionCommandBase

Parameters:

actionCtx - The Context for the current request

Returns:

false if a ForwardConfig is returned, else true to complete processing

Throws:

Exception - if thrown by the Action class and not declared by an Exception Handler

handle

protected abstract ForwardConfig handle(ActionContext context,
                                        Exception exception,
                                        ExceptionConfig exceptionConfig,
                                        ActionConfig actionConfig,
                                        ModuleConfig moduleConfig)
                                 throws Exception

Perform the required handling of the specified exception.

Parameters:

context - The Context for this request

exception - The exception being handled

exceptionConfig - The corresponding ExceptionConfig

actionConfig - The ActionConfig for this request

moduleConfig - The ModuleConfig for this request

Returns:

the ForwardConfig to be processed next (if any), or null if processing has been completed

Throws:

Exception - if there are any problems handling the exception