/*

  * $Source$

  * $Revision$

  *

  * Copyright (C) 2007 Tim Pizey

  *

  * Part of Melati (http://melati.org), a framework for the rapid

  * development of clean, maintainable web applications.

  *

  * Melati is free software; Permission is granted to copy, distribute

  * and/or modify this software under the terms either:

  *

  * a) the GNU General Public License as published by the Free Software

  *    Foundation; either version 2 of the License, or (at your option)

  *    any later version,

  *

  *    or

  *

  * b) any version of the Melati Software License, as published

  *    at http://melati.org

  *

  * You should have received a copy of the GNU General Public License and

  * the Melati Software License along with this program;

  * if not, write to the Free Software Foundation, Inc.,

  * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA to obtain the

  * GNU General Public License and visit http://melati.org to obtain the

  * Melati Software License.

  *

  * Feel free to contact the Developers of Melati (http://melati.org),

  * if you would like to work out a different arrangement than the options

  * outlined here.  It is our intention to allow Melati to be used by as

  * wide an audience as possible.

  *

  * This program 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 General Public License for more details.

  *

  * Contact details for copyright holder:

  *

  *     Tim Pizey <timp At paneris.org>

  *     http://paneris.org/~timp

  */

 package org.melati.poem.util;

 import java.lang.reflect.Method;

 /**

  * @author timp

  * @since 15 Jun 2007

  * 

  */

 public final class ClassUtils {

   private ClassUtils() {}

   /**

    * @param clazz The class to introspect

    * @param methodName The name of one argument methods to find

    * @return An array of methods with the given name and one argument

    */

   public static Method[] getOneArgumentMethods(Class<?> clazz, String methodName) {

     Method[] methods = clazz.getMethods();

     Method[] possibleMethods = new Method[methods.length];

     int possibleIndex = 0;

     for (int i = 0; i < methods.length; i++) {

       if (methods[i].getName().equals(methodName)

               && methods[i].getParameterTypes().length == 1) {

         possibleMethods[possibleIndex++] = methods[i];

       }

     }

     return (Method[])ArrayUtils.section(possibleMethods, 0, possibleIndex);

   }

   /**

    * @param clazz The class to introspect

    * @param methodName The name of the no argument public method to return

    * @return An accessible Method with the given name and no arguments or null

    */

   public static Method getNoArgMethod(Class<?> clazz, String methodName) {

     Method method;

     try {

       method = clazz.getMethod(methodName, new Class[] {});

     } catch (Exception e) {

       method = null;

     }

     return method;

   }

 }