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1   /*
2    * Copyright 2002-2004 The Apache Software Foundation
3    *
4    * Licensed under the Apache License, Version 2.0 (the "License");
5    * you may not use this file except in compliance with the License.
6    * You may obtain a copy of the License at
7    *
8    *     http://www.apache.org/licenses/LICENSE-2.0
9    *
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS,
12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13   * See the License for the specific language governing permissions and
14   * limitations under the License.
15   */
16  package org.apache.commons.clazz.common;
17  
18  import org.apache.commons.clazz.Clazz;
19  import org.apache.commons.clazz.ClazzFeature;
20  
21  /**
22   * Maintains common behavior of various implementations of ClazzFeature.
23   *  
24   * @author <a href="mailto:dmitri@apache.org">Dmitri Plotnikov</a>
25   * @version $Id: ClazzFeatureSupport.java 155436 2005-02-26 13:17:48Z dirkv $
26   */
27  public abstract class ClazzFeatureSupport
28          extends ClazzElementSupport 
29          implements ClazzFeature 
30  {
31  
32      private Clazz declaringClazz;
33  
34      /**
35       * Constructor for ClazzFeature.
36       */
37      public ClazzFeatureSupport(Clazz declaringClazz) {
38          if (declaringClazz == null) {
39              throw new NullPointerException("Declaring Clazz cannot be null");
40          }
41          this.declaringClazz = declaringClazz;
42      }
43  
44      /**
45       * @see org.apache.commons.clazz.ClazzFeature#getDeclaringClazz()
46       */
47      public Clazz getDeclaringClazz() {
48          return declaringClazz;
49      }
50  
51  }