001 /* 002 * Copyright 2002-2004 The Apache Software Foundation 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * http://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 */ 016 package org.apache.commons.clazz.common; 017 018 import org.apache.commons.clazz.Clazz; 019 import org.apache.commons.clazz.ClazzFeature; 020 021 /** 022 * Maintains common behavior of various implementations of ClazzFeature. 023 * 024 * @author <a href="mailto:dmitri@apache.org">Dmitri Plotnikov</a> 025 * @version $Id: ClazzFeatureSupport.java 155436 2005-02-26 13:17:48Z dirkv $ 026 */ 027 public abstract class ClazzFeatureSupport 028 extends ClazzElementSupport 029 implements ClazzFeature 030 { 031 032 private Clazz declaringClazz; 033 034 /** 035 * Constructor for ClazzFeature. 036 */ 037 public ClazzFeatureSupport(Clazz declaringClazz) { 038 if (declaringClazz == null) { 039 throw new NullPointerException("Declaring Clazz cannot be null"); 040 } 041 this.declaringClazz = declaringClazz; 042 } 043 044 /** 045 * @see org.apache.commons.clazz.ClazzFeature#getDeclaringClazz() 046 */ 047 public Clazz getDeclaringClazz() { 048 return declaringClazz; 049 } 050 051 }