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Finite State Machine with Non-Detereminstic Transitions

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/***
 *
 * Copyright 2014 Andrew Hall
 *
 * 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.statefulj.fsm.model.impl;

import org.statefulj.fsm.model.Action;
import org.statefulj.fsm.model.State;
import org.statefulj.fsm.model.StateActionPair;
import org.statefulj.fsm.model.Transition;

public class DeterministicTransitionImpl implements Transition {

	private StateActionPair stateActionPair;

	public DeterministicTransitionImpl(State from, State to, String event) {
		stateActionPair = new StateActionPairImpl(to, null);
		from.addTransition(event, this);
	}

	public DeterministicTransitionImpl(State from, State to, String event, Action action) {
		stateActionPair = new StateActionPairImpl(to, action);
		from.addTransition(event, this);
	}

	public DeterministicTransitionImpl(State to, Action action) {
		stateActionPair = new StateActionPairImpl(to, action);
	}

	public DeterministicTransitionImpl(State to) {
		stateActionPair = new StateActionPairImpl(to, null);
	}

	@Override
	public StateActionPair getStateActionPair(T stateful, String event, Object... args) {
		return stateActionPair;
	}

	public void setStateActionPair(StateActionPair stateActionPair) {
		this.stateActionPair = stateActionPair;
	}

	@Override
	public String toString() {
		return "DeterministicTransition[state=" + this.stateActionPair.getState().getName() + ", action=" + this.stateActionPair.getAction() + "]";
	}
}