Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
BeanHandler |
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| 1.3333333333333333;1.333 |
1 | /* | |
2 | * Licensed to the Apache Software Foundation (ASF) under one or more | |
3 | * contributor license agreements. See the NOTICE file distributed with | |
4 | * this work for additional information regarding copyright ownership. | |
5 | * The ASF licenses this file to You under the Apache License, Version 2.0 | |
6 | * (the "License"); you may not use this file except in compliance with | |
7 | * the License. You may obtain a copy of the License at | |
8 | * | |
9 | * http://www.apache.org/licenses/LICENSE-2.0 | |
10 | * | |
11 | * Unless required by applicable law or agreed to in writing, software | |
12 | * distributed under the License is distributed on an "AS IS" BASIS, | |
13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
14 | * See the License for the specific language governing permissions and | |
15 | * limitations under the License. | |
16 | */ | |
17 | package org.apache.commons.dbutils.handlers; | |
18 | ||
19 | import java.sql.ResultSet; | |
20 | import java.sql.SQLException; | |
21 | ||
22 | import org.apache.commons.dbutils.ResultSetHandler; | |
23 | import org.apache.commons.dbutils.RowProcessor; | |
24 | ||
25 | /** | |
26 | * <code>ResultSetHandler</code> implementation that converts the first | |
27 | * <code>ResultSet</code> row into a JavaBean. This class is thread safe. | |
28 | * | |
29 | * @see org.apache.commons.dbutils.ResultSetHandler | |
30 | */ | |
31 | public class BeanHandler implements ResultSetHandler { | |
32 | ||
33 | /** | |
34 | * The Class of beans produced by this handler. | |
35 | */ | |
36 | private final Class type; | |
37 | ||
38 | /** | |
39 | * The RowProcessor implementation to use when converting rows | |
40 | * into beans. | |
41 | */ | |
42 | private final RowProcessor convert; | |
43 | ||
44 | /** | |
45 | * Creates a new instance of BeanHandler. | |
46 | * | |
47 | * @param type The Class that objects returned from <code>handle()</code> | |
48 | * are created from. | |
49 | */ | |
50 | public BeanHandler(Class type) { | |
51 | 0 | this(type, ArrayHandler.ROW_PROCESSOR); |
52 | 0 | } |
53 | ||
54 | /** | |
55 | * Creates a new instance of BeanHandler. | |
56 | * | |
57 | * @param type The Class that objects returned from <code>handle()</code> | |
58 | * are created from. | |
59 | * @param convert The <code>RowProcessor</code> implementation | |
60 | * to use when converting rows into beans. | |
61 | */ | |
62 | 0 | public BeanHandler(Class type, RowProcessor convert) { |
63 | 0 | this.type = type; |
64 | 0 | this.convert = convert; |
65 | 0 | } |
66 | ||
67 | /** | |
68 | * Convert the first row of the <code>ResultSet</code> into a bean with the | |
69 | * <code>Class</code> given in the constructor. | |
70 | * | |
71 | * @return An initialized JavaBean or <code>null</code> if there were no | |
72 | * rows in the <code>ResultSet</code>. | |
73 | * | |
74 | * @throws SQLException if a database access error occurs | |
75 | * @see org.apache.commons.dbutils.ResultSetHandler#handle(java.sql.ResultSet) | |
76 | */ | |
77 | public Object handle(ResultSet rs) throws SQLException { | |
78 | 0 | return rs.next() ? this.convert.toBean(rs, this.type) : null; |
79 | } | |
80 | ||
81 | } |