Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
ArrayHandler |
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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.BasicRowProcessor; | |
23 | import org.apache.commons.dbutils.ResultSetHandler; | |
24 | import org.apache.commons.dbutils.RowProcessor; | |
25 | ||
26 | /** | |
27 | * <code>ResultSetHandler</code> implementation that converts a | |
28 | * <code>ResultSet</code> into an <code>Object[]</code>. This class is | |
29 | * thread safe. | |
30 | * | |
31 | * @see org.apache.commons.dbutils.ResultSetHandler | |
32 | */ | |
33 | public class ArrayHandler implements ResultSetHandler { | |
34 | ||
35 | /** | |
36 | * Singleton processor instance that handlers share to save memory. Notice | |
37 | * the default scoping to allow only classes in this package to use this | |
38 | * instance. | |
39 | */ | |
40 | 0 | static final RowProcessor ROW_PROCESSOR = new BasicRowProcessor(); |
41 | ||
42 | /** | |
43 | * The RowProcessor implementation to use when converting rows | |
44 | * into arrays. | |
45 | */ | |
46 | private final RowProcessor convert; | |
47 | ||
48 | /** | |
49 | * Creates a new instance of ArrayHandler using a | |
50 | * <code>BasicRowProcessor</code> for conversion. | |
51 | */ | |
52 | public ArrayHandler() { | |
53 | 0 | this(ROW_PROCESSOR); |
54 | 0 | } |
55 | ||
56 | /** | |
57 | * Creates a new instance of ArrayHandler. | |
58 | * | |
59 | * @param convert The <code>RowProcessor</code> implementation | |
60 | * to use when converting rows into arrays. | |
61 | */ | |
62 | public ArrayHandler(RowProcessor convert) { | |
63 | 0 | super(); |
64 | 0 | this.convert = convert; |
65 | 0 | } |
66 | ||
67 | /** | |
68 | * Places the column values from the first row in an <code>Object[]</code>. | |
69 | * | |
70 | * @return An Object[] or <code>null</code> if there are no rows in the | |
71 | * <code>ResultSet</code>. | |
72 | * | |
73 | * @throws SQLException if a database access error occurs | |
74 | * @see org.apache.commons.dbutils.ResultSetHandler#handle(java.sql.ResultSet) | |
75 | */ | |
76 | public Object handle(ResultSet rs) throws SQLException { | |
77 | 0 | return rs.next() ? this.convert.toArray(rs) : null; |
78 | } | |
79 | ||
80 | } |