/*

  * Copyright 2002-2009 the original author or authors.

  *

  * Licensed under the Apache License, Version 2.0 (the "License");

  * you may not use this file except in compliance with the License.

  * You may obtain a copy of the License at

  *

  *      http://www.apache.org/licenses/LICENSE-2.0

  *

  * Unless required by applicable law or agreed to in writing, software

  * distributed under the License is distributed on an "AS IS" BASIS,

  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

  * See the License for the specific language governing permissions and

  * limitations under the License.

  */

 package net.sf.json.processors;

 import java.util.Set;

 /**

  * Base class for finding a matching DefaultValueProcessor.<br>

  * <ul>

  * <li>DEFAULT - matches the target class with equals().</li>

  * </ul>

  *

  * @author Andres Almiray <aalmiray@users.sourceforge.net>

  */

 public abstract class DefaultValueProcessorMatcher {

    /** Matches the target with equals() */

    public static final DefaultValueProcessorMatcher DEFAULT = new DefaultDefaultValueProcessorMatcher();

    /**

     * Returns the matching class calculated with the target class and the

     * provided set.

     *

     * @param target the target class to match

     * @param set a set of possible matches

     */

    public abstract Object getMatch( Class target, Set set );

    private static final class DefaultDefaultValueProcessorMatcher extends

          DefaultValueProcessorMatcher {

       public Object getMatch( Class target, Set set ) {

          if( target != null && set != null && set.contains( target ) ){

             return target;

          }

          return null;

       }

    }

 }