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
18 package org.apache.logging.log4j.core.helpers;
19
20 import java.io.Closeable;
21 import java.io.IOException;
22 import java.sql.Connection;
23 import java.sql.SQLException;
24 import java.sql.Statement;
25
26 /**
27 * Helper class for closing resources.
28 */
29 public class Closer {
30
31 /**
32 * Closes the specified {@code Closeable} (stream or reader/writer),
33 * ignoring any exceptions thrown by the close operation.
34 *
35 * @param closeable the resource to close, may be {@code null}
36 */
37 public static void closeSilent(Closeable closeable) {
38 try {
39 if (closeable != null) {
40 closeable.close();
41 }
42 } catch (final Exception ignored) {
43 // ignored
44 }
45 }
46
47 /**
48 * Closes the specified {@code Closeable} (stream or reader/writer).
49 *
50 * @param closeable the resource to close, may be {@code null}
51 * @throws IOException if a problem occurred closing the specified resource
52 */
53 public static void close(Closeable closeable) throws IOException {
54 if (closeable != null) {
55 closeable.close();
56 }
57 }
58
59 /**
60 * Closes the specified {@code Statement}, ignoring any exceptions thrown by
61 * the close operation.
62 *
63 * @param statement the resource to close, may be {@code null}
64 */
65 public static void closeSilent(Statement statement) {
66 try {
67 if (statement != null) {
68 statement.close();
69 }
70 } catch (final Exception ignored) {
71 // ignored
72 }
73 }
74
75 /**
76 * Closes the specified {@code Statement}.
77 *
78 * @param statement the resource to close, may be {@code null}
79 * @throws SQLException if a problem occurred closing the specified resource
80 */
81 public static void close(Statement statement) throws SQLException {
82 if (statement != null) {
83 statement.close();
84 }
85 }
86
87 /**
88 * Closes the specified {@code Connection}, ignoring any exceptions thrown
89 * by the close operation.
90 *
91 * @param connection the resource to close, may be {@code null}
92 */
93 public static void closeSilent(Connection connection) {
94 try {
95 if (connection != null) {
96 connection.close();
97 }
98 } catch (final Exception ignored) {
99 // ignored
100 }
101 }
102
103 /**
104 * Closes the specified {@code Connection}.
105 *
106 * @param connection the resource to close, may be {@code null}
107 * @throws SQLException if a problem occurred closing the specified resource
108 */
109 public static void close(Connection connection) throws SQLException {
110 if (connection != null) {
111 connection.close();
112 }
113 }
114
115 }