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package com.alibaba.qlexpress4.proxy;


import com.alibaba.qlexpress4.runtime.QLambda;

import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;

/**
 * Author: TaoKan
 */
public class QLambdaInvocationHandler implements InvocationHandler {
    private final QLambda qLambda;

    public QLambdaInvocationHandler(QLambda qLambda) {
        this.qLambda = qLambda;
    }

    @Override
    public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
        return Modifier.isAbstract(method.getModifiers())? qLambda.call(args).getResult().get():
                method.getReturnType() == String.class &&  "toString".equals(method.getName())?
                        "QLambdaProxy": method.invoke(args);
    }
}