org.springframework.webflow.engine.FlowExecutionExceptionHandler Maven / Gradle / Ivy
/*
* Copyright 2002-2006 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.webflow.engine;
import org.springframework.webflow.execution.FlowExecutionException;
import org.springframework.webflow.execution.ViewSelection;
/**
* A strategy for handling an exception that occurs at runtime during the
* execution of a flow definition.
*
* @author Keith Donald
*/
public interface FlowExecutionExceptionHandler {
/**
* Can this handler handle the given exception?
* @param exception the exception that occured
* @return true if yes, false if no
*/
public boolean handles(FlowExecutionException exception);
/**
* Handle the exception in the context of the current request, optionally
* making an error view selection that should be rendered.
* @param exception the exception that occured
* @param context the execution control context for this request
* @return the selected error view that should be displayed (may be null if
* the handler chooses not to select a view, in which case other exception
* handlers may be given a chance to handle the exception)
*/
public ViewSelection handle(FlowExecutionException exception, RequestControlContext context);
}