com.github.tddts.jet.util.SpringUtil.java Source code

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Here is the source code for com.github.tddts.jet.util.SpringUtil.java

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/*
 * Copyright 2018 Tigran Dadaiants
 *
 * 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.github.tddts.jet.util;

import org.apache.commons.lang3.tuple.Pair;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.reflect.MethodSignature;
import org.springframework.aop.framework.Advised;
import org.springframework.aop.support.AopUtils;
import org.springframework.beans.factory.BeanInitializationException;

import java.lang.reflect.Method;

/**
 * Utility class for operations with Spring objects.
 *
 * @author Tigran_Dadaiants dtkcommon@gmail.com
 */
public class SpringUtil {

    /**
     * Checks if given bean is a dynamic proxy and if it is so returns actual bean behind proxy and it's type.
     *
     * @param bean bean object
     * @return pair containing of bean and it's class
     * @throws BeanInitializationException in case of any exception
     */
    public static Pair<Class<?>, Object> checkForDinamicProxy(Object bean) throws BeanInitializationException {
        try {
            Class<?> type = bean.getClass();
            if (AopUtils.isJdkDynamicProxy(bean)) {
                Advised advised = (Advised) bean;
                type = advised.getTargetClass();
                bean = advised.getTargetSource().getTarget();
            }
            return Pair.of(type, bean);
        } catch (Exception e) {
            throw new BeanInitializationException(e.getMessage(), e);
        }
    }

    public static Method getMethod(JoinPoint joinPoint) throws NoSuchMethodException {
        MethodSignature signature = (MethodSignature) joinPoint.getSignature();
        Method method = signature.getMethod();

        if (method.getDeclaringClass().isInterface()) {
            method = joinPoint.getTarget().getClass().getDeclaredMethod(joinPoint.getSignature().getName(),
                    method.getParameterTypes());
        }

        return method;
    }

}