org.springframework.statemachine.kryo.StateMachineContextSerializer Maven / Gradle / Ivy

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/*
 * Copyright 2015 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.statemachine.kryo;

import java.util.List;
import java.util.Map;

import org.springframework.statemachine.StateMachineContext;
import org.springframework.statemachine.support.DefaultExtendedState;
import org.springframework.statemachine.support.DefaultStateMachineContext;

import com.esotericsoftware.kryo.Kryo;
import com.esotericsoftware.kryo.Serializer;
import com.esotericsoftware.kryo.io.Input;
import com.esotericsoftware.kryo.io.Output;

/**
 * Kryo {@link Serializer} for {@link StateMachineContext}.
 *
 * @author Janne Valkealahti
 *
 * @param  the type of state
 * @param  the type of event
 */
public class StateMachineContextSerializer extends Serializer> {

	@Override
	public void write(Kryo kryo, Output output, StateMachineContext context) {
		kryo.writeClassAndObject(output, context.getEvent());
		kryo.writeClassAndObject(output, context.getState());
		kryo.writeClassAndObject(output, context.getEventHeaders());
		kryo.writeClassAndObject(output, context.getExtendedState().getVariables());
		kryo.writeClassAndObject(output, context.getChilds());
	}

	@SuppressWarnings("unchecked")
	@Override
	public StateMachineContext read(Kryo kryo, Input input, Class> clazz) {
		E event = (E) kryo.readClassAndObject(input);
		S state = (S) kryo.readClassAndObject(input);
		Map eventHeaders = (Map) kryo.readClassAndObject(input);
		Map variables = (Map) kryo.readClassAndObject(input);
		List> childs = (List>) kryo.readClassAndObject(input);
		return new DefaultStateMachineContext(childs, state, event, eventHeaders, new DefaultExtendedState(variables));
	}

}