org.springframework.webflow.NoMatchingTransitionException 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;
import org.springframework.core.style.StylerUtils;
/**
* Thrown when no transition can be matched given the occurence of an event in
* the context of a flow execution request.
*
* Typically this happens because there is no "handler" transition for the last
* event that occured.
*
* @author Keith Donald
* @author Erwin Vervaet
*/
public class NoMatchingTransitionException extends StateException {
/**
* The event that occured that could not be matched to a Transition.
*/
private Event event;
/**
* Create a new no matching transition exception.
* @param state the state that could not be transitioned out of
* @param event the event that occured that could not be matched to a
* transition
*/
public NoMatchingTransitionException(TransitionableState state, Event event) {
this(state, event, (Throwable)null);
}
/**
* Create a new no matching transition exception.
* @param state the state that could not be transitioned out of
* @param event the event that occured that could not be matched to a
* transition
* @param cause the underlying cause
*/
public NoMatchingTransitionException(TransitionableState state, Event event, Throwable cause) {
super(state, "No transition found on occurence of event '" + event.getId() + "' in state '" + state.getId()
+ "' of flow '" + state.getFlow().getId() + "' -- valid transitional criteria are "
+ StylerUtils.style(state.getTransitionSet().getTransitionCriterias())
+ " -- likely programmer error, check the set of TransitionCriteria for this state", cause);
this.event = event;
}
/**
* Create a new no matching transition exception.
* @param state the state that could not be transitioned out of
* @param event the event that occured that could not be matched to a
* transition
* @param message the message
*/
public NoMatchingTransitionException(TransitionableState state, Event event, String message) {
this(state, event, message, null);
}
/**
* Create a new no matching transition exception.
* @param state the state that could not be transitioned out of
* @param event the event that occured that could not be matched to a
* transition
* @param message the message
* @param cause the underlying cause
*/
public NoMatchingTransitionException(TransitionableState state, Event event, String message, Throwable cause) {
super(state, message, cause);
this.event = event;
}
/**
* Returns the state that could not execute a transition on the occurence of
* the event in the context of the current request.
*/
public TransitionableState getTransitionableState() {
return (TransitionableState)getState();
}
/**
* Returns the event for the current request that did not trigger any
* supported transition out of the set state.
*/
public Event getEvent() {
return event;
}
}