Glassfish example source code file (MethodUtils.java)

This example Glassfish source code file (MethodUtils.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Glassfish tags/keywords

method, method, methodutils, methodutils, reflection, string, string, util

The Glassfish MethodUtils.java source code

/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 1997-2010 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
 * https://glassfish.dev.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:
 * "Portions Copyright [year] [name of copyright owner]"
 *
 * Contributor(s):
 * If you wish your version of this file to be governed by only the CDDL or
 * only the GPL Version 2, indicate your decision by adding "[Contributor]
 * elects to include this software in this distribution under the [CDDL or GPL
 * Version 2] license."  If you don't indicate a single choice of license, a
 * recipient has the option to distribute your version of this file under
 * either the CDDL, the GPL Version 2 or to extend the choice of license to
 * its licensees as provided above.  However, if you add GPL Version 2 code
 * and therefore, elected the GPL Version 2 license, then the option applies
 * only if the new code is made subject to such option by the copyright
 * holder.
 */

package com.sun.enterprise.tools.verifier.tests.ejb;

import java.util.*;
import java.lang.reflect.*;

/** 
 * Utility package for dealing with method descriptors from <method-permission>
 * element and <container-transaction> elements
 */
public class MethodUtils { 

    /** 
     * Add method name to vector
     *
     * @param v Vector to be added to
     * @param methods array of methods to be added to vector 
     *   
     */
    public static void addMethodNamesToVector(Vector<String> v, Method[] methods) {
        for (int i=0; i< methods.length; i++) {
            // add method name to vector
            v.addElement(methods[i].getName());
        }
    }
 
    /** 
     * Determine is method parameters are equal.
     *
     * @param v Vector to be added to
     * @param hMethods array of home interface methods to be added to vector 
     * @param rMethods array of remote interface methods to be added to vector 
     *   
     */
    public static void addMethodNamesToVector(Vector<String> v, Method[] hMethods, Method[] rMethods) {
        // add method names to vector for both home and remote interfaces
        addMethodNamesToVector(v,hMethods);
        addMethodNamesToVector(v,rMethods);
    }
 
   
    /** 
     * Determine is method parameters are equal.
     *
     * @param s1 array of parameters for method 
     * @param s2 array of parameters for method 
     *   
     * @return <code>boolean the results for this parameter equality test
     */
    public static boolean stringArrayEquals(String[] s1, String[] s2) {
        if (s1 == null && s2 == null) {
            return true;
        }
        if (s1 == null && s2 != null) {
            return false;
        }
        if (s2 == null && s1 != null) {
            return false;
        }
        if (s1.length == s2.length) {
            for (int i = 0; i < s1.length; i++) {
                if (!s1[i].equals(s2[i])) {
                    return false;
                }
            }
            return true;
        } else {
            return false;
        }
    }
    
    /** returns true if method names, return types and parameters match. Otherwise
     * it returns false. */
    public static boolean methodEquals(Method classMethod, Method intfMethod) {
        return classMethod.getName().equals(intfMethod.getName()) &&
                intfMethod.getReturnType().isAssignableFrom(classMethod.getReturnType()) &&
                Arrays.equals(classMethod.getParameterTypes(), intfMethod.getParameterTypes());
    }

}