org.springframework.webflow.engine
Class FlowExecutionExceptionHandlerSet

java.lang.Object
  org.springframework.webflow.engine.FlowExecutionExceptionHandlerSet

public class FlowExecutionExceptionHandlerSet
extends java.lang.Object

A typed set of state exception handlers, mainly for use internally by artifacts that can apply state exception handling logic.

Author:

Keith Donald

See Also:

FlowExecutionExceptionHandler, Flow.getExceptionHandlerSet(), State.getExceptionHandlerSet()

Constructor Summary

FlowExecutionExceptionHandlerSet()

Method Summary

boolean	add(FlowExecutionExceptionHandler exceptionHandler) Add a state exception handler to this set.
boolean	addAll(FlowExecutionExceptionHandler[] exceptionHandlers) Add a collection of state exception handler instances to this set.
boolean	contains(FlowExecutionExceptionHandler exceptionHandler) Tests if this state exception handler is in this set.
ViewSelection	handleException(FlowExecutionException exception, RequestControlContext context) Handle an exception that occured during the context of the current flow execution request.
boolean	remove(FlowExecutionExceptionHandler exceptionHandler) Remove the exception handler instance from this set.
int	size() Returns the size of this state exception handler set.
FlowExecutionExceptionHandler[]	toArray() Convert this list to a typed state exception handler array.
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

FlowExecutionExceptionHandlerSet

public FlowExecutionExceptionHandlerSet()

Method Detail

add

public boolean add(FlowExecutionExceptionHandler exceptionHandler)

Add a state exception handler to this set.

Parameters:

exceptionHandler - the exception handler to add

Returns:

true if this set's contents changed as a result of the add operation

addAll

public boolean addAll(FlowExecutionExceptionHandler[] exceptionHandlers)

Add a collection of state exception handler instances to this set.

Parameters:

exceptionHandlers - the exception handlers to add

Returns:

true if this set's contents changed as a result of the add operation

contains

public boolean contains(FlowExecutionExceptionHandler exceptionHandler)

Tests if this state exception handler is in this set.

Parameters:

exceptionHandler - the exception handler

Returns:

true if the state exception handler is contained in this set, false otherwise

remove

public boolean remove(FlowExecutionExceptionHandler exceptionHandler)

Remove the exception handler instance from this set.

Parameters:

exceptionHandler - the exception handler to add

Returns:

true if this set's contents changed as a result of the remove operation

size

public int size()

Returns the size of this state exception handler set.

Returns:

the exception handler set size

toArray

public FlowExecutionExceptionHandler[] toArray()

Convert this list to a typed state exception handler array.

Returns:

the exception handler list, as a typed array

handleException

public ViewSelection handleException(FlowExecutionException exception,
                                     RequestControlContext context)

Handle an exception that occured during the context of the current flow execution request.

This implementation iterates over the ordered set of exception handler objects, delegating to each handler in the set until one handles the exception that occured and selects a non-null error view.

Parameters:

exception - the exception that occured

context - the flow execution control context

Returns:

the selected error view, or null if no handler matched or returned a non-null view selection

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object