com.power4j.coca.kit.common.lang.DefaultChainExecutor Maven / Gradle / Ivy

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/*
 * Copyright 2021 ChenJun ([email protected])
 *
 * 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 com.power4j.coca.kit.common.lang;

import java.util.List;

/**
 * @author CJ ([email protected])
 * @date 2021/9/13
 * @since 1.0
 */
public class DefaultChainExecutor implements Chain {

	private final List>> chainWorkerList;

	private final int current;

	protected DefaultChainExecutor(List>> chainWorkerList, int current) {
		this.chainWorkerList = chainWorkerList;
		this.current = current;
	}

	@Override
	public void runNext(C context) {
		if (current < chainWorkerList.size()) {
			ChainWorker> worker = chainWorkerList.get(current);
			worker.handle(context, new DefaultChainExecutor<>(chainWorkerList, current + 1));
		}
		chainOver(context);
	}

	protected void chainOver(C context) {
		// nothing
	}

}