/*
* JBoss, Home of Professional Open Source.
* Copyright 2011, Red Hat, Inc., and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.as.ejb3.util;
import java.lang.reflect.Method;
/**
* This helper class contains helper methods that are used
* to resolve method-params in deployment descriptors and method level annotations
* in EJB implementation classes.
*
* @author robert.panzer@me.com
*
*/
public final class MethodInfoHelper {
private static final String[] NO_STRINGS = new String[0];
private MethodInfoHelper() {}
/**
* This method returns the class names of the parameters of the given method
* in canonical form. In case of a method without parameters it will return an empty
* array.
*
* <p>The canonical form is the one that is used in deployment descriptors.
*
* <p>Example: For the method <code>f(String[] arg0, String arg1, int)</code> this method will return
* <code>{"java.lang.String[]", "java.lang.String", "int"}</code>
*
* @param viewMethod
* @return
*/
public static String[] getCanonicalParameterTypes(Method viewMethod) {
Class<?>[] parameterTypes = viewMethod.getParameterTypes();
if (parameterTypes == null) {
return NO_STRINGS;
}
String[] canonicalNames = new String[parameterTypes.length];
for (int i = 0; i < parameterTypes.length; i++) {
canonicalNames[i] = parameterTypes[i].getCanonicalName();
}
return canonicalNames;
}
}