com.github.cosycode.ext.hub.OnceExecClosureProxy Maven / Gradle / Ivy

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扩展模块, 用于存放一些非常用的工具或模块的扩展类, 例如在poi基础上扩展的excel的导入模块, 模拟按键模块

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package com.github.cosycode.ext.hub;

import lombok.NonNull;

import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;
import java.util.function.BiConsumer;
import java.util.function.BiFunction;

/**
 * Description : 
 * 
 * created in  2021/4/6
 *
 * @author CPF
 **/
public class OnceExecClosureProxy extends AbstractClosureProxy {

    private final Lock lock = new ReentrantLock();

    private T skip;

    public OnceExecClosureProxy(@NonNull T then) {
        super(then);
    }

    public OnceExecClosureProxy(@NonNull T then, @NonNull BiFunction function) {
        super(then, function);
    }

    public OnceExecClosureProxy(@NonNull T then, @NonNull BiConsumer biConsumer) {
        super(then, biConsumer);
    }

    public static  T of(T then) {
        return new OnceExecClosureProxy<>(then).proxy();
    }

    public OnceExecClosureProxy skip(T skip) {
        this.skip = skip;
        return this;
    }

    @Override
    public R closureFunction(P params) {
        if (lock.tryLock()) {
            try {
                if (functional != null) {
                    return biFunction.apply(functional, params);
                }
            } finally {
                lock.unlock();
            }
        } else {
            if (skip != null) {
                return biFunction.apply(skip, params);
            }
        }
        return null;
    }

}