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1   /*
2   Copyright (c) 2014 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 java.io.IOException;
21  
22  import com.healthmarketscience.jackcess.Column;
23  
24  /**
25   * Interface which allows for data manipulation/validation as values are being
26   * inserted into a database.
27   *
28   * @author James Ahlborn
29   */
30  public interface ColumnValidator 
31  {
32    /**
33     * Validates and/or manipulates the given potential new value for the given
34     * column.  This method may return an entirely different value or throw an
35     * exception if the input value is not valid.
36     */
37    public Object validate(Column col, Object val) throws IOException;
38  }