1 /*
2 * Copyright 2004-2026 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 * https://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 package com.ibatis.sqlmap.engine.transaction.jta;
17
18 /**
19 * The Class JTANamespace.
20 * <p>
21 * Utility class for detecting presence of Jakarta and Javax Transaction API classes.
22 */
23 public final class JTANamespace {
24
25 /** The Constant classloader. */
26 private static final ClassLoader classloader = JTANamespace.class.getClassLoader();
27
28 /** The Constant JAKARTA_TRANSACTION_CLASS. */
29 public static final Class<?> JAKARTA_TRANSACTION_CLASS = JTANamespace
30 .searchTypeInClasspath("jakarta.transaction.Transaction");
31
32 /** The Constant JAVAX_TRANSACTION_CLASS. */
33 public static final Class<?> JAVAX_TRANSACTION_CLASS = JTANamespace
34 .searchTypeInClasspath("javax.transaction.Transaction");
35
36 /**
37 * Private constructor to prevent instantiation.
38 */
39 private JTANamespace() {
40 // Utility class
41 }
42
43 /**
44 * Attempts to load the class with the given name using this class's classloader. Returns null if the class is not
45 * found.
46 *
47 * @param <T>
48 * the generic type
49 * @param typeName
50 * the type name
51 *
52 * @return the class if found, or null if not found
53 */
54 @SuppressWarnings("unchecked")
55 private static <T> Class<? extends T> searchTypeInClasspath(final String typeName) {
56 try {
57 return (Class<? extends T>) Class.forName(typeName, false, JTANamespace.classloader);
58 } catch (final ClassNotFoundException e) {
59 return null;
60 }
61 }
62
63 }