org.apache.tapestry5.internal.services
Class ComponentResultProcessorWrapper

java.lang.Object
  org.apache.tapestry5.internal.services.ComponentResultProcessorWrapper

All Implemented Interfaces:

ComponentEventCallback

public class ComponentResultProcessorWrapper
extends Object
implements ComponentEventCallback

A wrapper around ComponentEventResultProcessor that encapsulates capturing the exception.

Constructor Summary

ComponentResultProcessorWrapper(ComponentEventResultProcessor processor)

Method Summary

boolean	handleResult(Object result) Invoked to handle a non-null event handler method result.
boolean	isAborted() Returns true if ComponentEventCallback.handleResult(Object) was invoked, false otherwise.

Methods inherited from class java.lang.Object

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

Constructor Detail

ComponentResultProcessorWrapper

public ComponentResultProcessorWrapper(ComponentEventResultProcessor processor)

Method Detail

handleResult

public boolean handleResult(Object result)

Description copied from interface: ComponentEventCallback

Invoked to handle a non-null event handler method result. The handler should determine whether the value is acceptible, and throw an exception if not. Any thrown exception will be wrapped to identify the component and method from which the value was returned.

Boolean values are not passed to the handler. Booleans are used to indicate that the event has been handled (true) or that a further search for handlers should continue (true). If a component event method returns true, then Event.isAborted() will return true.

Specified by:

handleResult in interface ComponentEventCallback

Parameters:

result - the result value return from the event handler method

Returns:

true if the event is aborted, false if the event may continue

isAborted

public boolean isAborted()
                  throws IOException

Returns true if ComponentEventCallback.handleResult(Object) was invoked, false otherwise.

Returns:

true if the event was aborted

Throws:

IOException - if ComponentEventResultProcessor.processResultValue(Object) threw an IOException