PropertyValueComparator


1   /*
2    * Copyright (C) 2005 Alfresco, Inc.
3    *
4    * Licensed under the Mozilla Public License version 1.1 
5    * with a permitted attribution clause. You may obtain a
6    * copy of the License at
7    *
8    *   http://www.alfresco.org/legal/license.txt
9    *
10   * Unless required by applicable law or agreed to in writing,
11   * software distributed under the License is distributed on an
12   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
13   * either express or implied. See the License for the specific
14   * language governing permissions and limitations under the
15   * License.
16   */
17  package org.alfresco.repo.action.evaluator.compare;
18  
19  import java.io.Serializable  ;
20  
21  import org.alfresco.repo.action.evaluator.ComparePropertyValueEvaluator;
22  
23  /**
24   * Property value comparator interface
25   * 
26   * @author Roy Wetherall
27   */
28  public interface PropertyValueComparator
29  {
30      /**
31       * Callback method to register this comparator with the evaluator.
32       * 
33       * @param evaluator     the compare property value evaluator
34       */
35      void registerComparator(ComparePropertyValueEvaluator evaluator);
36      
37      /**
38       * Compares the value of a property with the compare value, using the operator passed.
39       * 
40       * @param propertyValue     the property value
41       * @param compareValue      the compare value
42       * @param operation         the operation used to compare the two values
43       * @return                  the result of the comparision, true if successful false otherwise
44       */
45      boolean compare(
46              Serializable   propertyValue,             
47              Serializable   compareValue, 
48              ComparePropertyValueOperation operation);
49  }
50

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