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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2013-2017 Oracle and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * http://glassfish.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at packager/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
 * Oracle designates this particular file as subject to the "Classpath"
 * exception as provided by Oracle in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
 * Modifications:
 * If applicable, add the following below the License Header, with the fields
 * enclosed by brackets [] replaced by your own identifying information:
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package com.sun.xml.ws.policy.privateutil;

import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.logging.Level;
import java.util.logging.Logger;

/**
 * Utility class to invoke com.sun.xml.ws.policy.util.MethodUtil.invoke() if available. If not (other then Oracle JDK) fallbacks
 * to java.lang,reflect.Method.invoke()
 */
class MethodUtil {

    private static final Logger LOGGER = Logger.getLogger(MethodUtil.class.getName());

    static Object invoke(Object target, Method method, Object[] args) throws IllegalAccessException, InvocationTargetException {
        if (LOGGER.isLoggable(Level.FINE)) {
            LOGGER.log(Level.FINE, "Invoking method using com.sun.xml.ws.policy.util.MethodUtil");
        }
        try {
            return com.sun.xml.ws.policy.util.MethodUtil.invoke(method, target, args);
        } catch (InvocationTargetException ite) {
            // unwrap invocation exception added by reflection code ...
            throw unwrapException(ite);
        }
    }

    private static InvocationTargetException unwrapException(InvocationTargetException ite) {
        Throwable targetException = ite.getTargetException();
        if (targetException != null && targetException instanceof InvocationTargetException) {
            if (LOGGER.isLoggable(Level.FINE)) {
                LOGGER.log(Level.FINE, "Unwrapping invocation target exception");
            }
            return (InvocationTargetException) targetException;
        } else {
            return ite;
        }
    }

}