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1   /*
2   Copyright (c) 2010 James Ahlborn
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  
18  package com.healthmarketscience.jackcess.util;
19  
20  import com.healthmarketscience.jackcess.Table;
21  
22  /**
23   * Interface for handling comparisons between column values.
24   *
25   * @author James Ahlborn
26   * @usage _intermediate_class_
27   */
28  public interface ColumnMatcher 
29  {
30  
31    /**
32     * Returns {@code true} if the given value1 should be considered a match for
33     * the given value2 for the given column in the given table, {@code false}
34     * otherwise.
35     *
36     * @param table the relevant table
37     * @param columnName the name of the relevant column within the table
38     * @param value1 the first value to match (may be {@code null})
39     * @param value2 the second value to match (may be {@code null})
40     */
41    public boolean matches(Table table, String columnName, Object value1,
42                           Object value2);
43  }