1 package org.apache.torque.om.mapper;
2
3 /*
4 * Licensed to the Apache Software Foundation (ASF) under one
5 * or more contributor license agreements. See the NOTICE file
6 * distributed with this work for additional information
7 * regarding copyright ownership. The ASF licenses this file
8 * to you under the Apache License, Version 2.0 (the
9 * "License"); you may not use this file except in compliance
10 * with the License. You may obtain a copy of the License at
11 *
12 * http://www.apache.org/licenses/LICENSE-2.0
13 *
14 * Unless required by applicable law or agreed to in writing,
15 * software distributed under the License is distributed on an
16 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17 * KIND, either express or implied. See the License for the
18 * specific language governing permissions and limitations
19 * under the License.
20 */
21
22 import java.sql.ResultSet;
23 import java.sql.SQLException;
24
25 import org.apache.torque.TorqueException;
26
27 /**
28 * Maps a database record to a Integer.
29 *
30 * @version $Id: IntegerMapper.java 1380467 2012-09-04 07:33:05Z tfischer $
31 */
32 public class IntegerMapper implements RecordMapper<Integer>
33 {
34 /** Serial Version UID. */
35 private static final long serialVersionUID = 1L;
36
37 /** The internal offset for the mapper. */
38 private final int internalOffset;
39
40 /**
41 * Constructs a IntegerMapper with an offset of 0.
42 */
43 public IntegerMapper()
44 {
45 internalOffset = 0;
46 }
47
48 /**
49 * Constructs a IntegerMapper with the given offset.
50 *
51 * @param offset the additional offset (0 based).
52 */
53 public IntegerMapper(int offset)
54 {
55 this.internalOffset = offset;
56 }
57
58 public Integer processRow(
59 ResultSet resultSet,
60 int rowOffset)
61 throws TorqueException
62 {
63 try
64 {
65 Integer result = Integer.valueOf(
66 resultSet.getInt(rowOffset + internalOffset + 1));
67 if (result == 0 && resultSet.wasNull())
68 {
69 return null;
70 }
71 return result;
72 }
73 catch (SQLException e)
74 {
75 throw new TorqueException("Result could not be mapped to a Integer",
76 e);
77 }
78 }
79 }