com.sun.enterprise.util.reflect.ReflectUtils Maven / Gradle / Ivy
/*
* Copyright (c) 2011, 2018 Oracle and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v. 2.0, which is available at
* http://www.eclipse.org/legal/epl-2.0.
*
* This Source Code may also be made available under the following Secondary
* Licenses when the conditions for such availability set forth in the
* Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
* version 2 with the GNU Classpath Exception, which is available at
* https://www.gnu.org/software/classpath/license.html.
*
* SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
*/
package com.sun.enterprise.util.reflect;
import java.lang.reflect.Method;
/**
* Place to put utility methods that the JVM doesn't supply
* @author Byron Nevins
*/
public final class ReflectUtils {
/**
*
* @param m1 Method to compare
* @param m2 Method to compare
* @return null if they have the same signature. A String describing the differences
* if they have different signatures.
*/
public static String equalSignatures(Method m1, Method m2) {
StringBuilder sb = new StringBuilder();
if (!m1.getReturnType().equals(m2.getReturnType())) {
sb.append(Strings.get("return_type_mismatch", m1.getReturnType(), m2.getReturnType()));
sb.append(" ");
}
Class[] types1 = m1.getParameterTypes();
Class[] types2 = m2.getParameterTypes();
if (types1.length != types2.length) {
sb.append(Strings.get("parameter_number_mismatch", types1.length, types2.length));
}
else { // don't want to go in here if the lengths don't match!!
for (int i = 0; i < types1.length; i++) {
if (!types1[i].equals(types2[i])) {
sb.append(Strings.get("parameter_type_mismatch", i, types1[i], types2[i]));
sb.append(" ");
}
}
}
if (sb.length() == 0)
return null;
sb.append('\n').append(m1.toGenericString());
sb.append('\n').append(m2.toGenericString());
return sb.toString();
}
}