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1   /*
2    * Copyright 2002-2006 the original author or authors.
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.gageot.excel.core;
18  
19  import java.io.IOException;
20  
21  import org.apache.poi.hssf.usermodel.HSSFCell;
22  
23  /*** 
24   * An interface used by ExcelTemplate for mapping cells.
25   * Implementations of this interface perform the actual work of mapping
26   * cells, but don't need to worry about exception handling. IOExceptions
27   * will be caught and handled correctly by the ExcelTemplate class.
28   *
29   * @author David Gageot
30   * @see ExcelTemplate
31   * @see SheetExtractor
32   * @see RowMapper
33   */
34  public interface CellMapper {
35  	/*** 
36  	 * Implementations must implement this method to map each cell of data
37  	 * in the HSSFSheet. This method should extract the values of the current cell.
38  	 * @param cell the HSSFCell to map
39  	 * @param rowNum the number of the current row
40  	 * @param columnNum the number of the current column
41  	 * @throws IOException if a IOException is encountered getting
42  	 * column values (that is, there's no need to catch IOException)
43  	 */
44  	Object mapCell (HSSFCell cell, int rowNum, int columnNum) throws IOException; 
45  }