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1   /*
2    * Copyright 2008 Tobias Hochwallner
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   */
17  package org.castor.core.nature;
18  
19  /**
20   * Defines a marker interface that any class needs to implement that wants 
21   * to allow natures to be layered on top.
22   * 
23   * @see ClassInfo
24   * @see Nature
25   * 
26   * @author Tobias Hochwallner, Sebastian Gabmeyer
27   * @since 1.2.1
28   *
29   */
30  public interface NatureExtendable {
31      
32      /**
33       * Checks if a specified nature has been added.
34       * 
35       * @param nature the name of the nature.
36       * @return true if the specified nature was added.
37       */
38      boolean hasNature(String nature);
39      
40      /**
41       * Adds a specified nature.
42       * 
43       * @param nature the name of the nature
44       */
45      void addNature(String nature);
46  
47  }