1 package org.apache.onami.persist;
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 javax.inject.Provider;
23 import javax.inject.Singleton;
24 import javax.transaction.UserTransaction;
25
26 import static org.apache.onami.persist.Preconditions.checkNotNull;
27
28 /**
29 * Provider fro {@link UserTransaction} which retrieves the value from the JNDI context.
30 */
31 @Singleton
32 class UserTransactionProviderByJndiLookup
33 implements Provider<UserTransaction>
34 {
35
36 private final String jndiName;
37
38 private final JndiLookupHelper jndiLookupHelper;
39
40 /**
41 * Constructor.
42 *
43 * @param jndiName jndi name of the entity manager factory. Must not be {@code null}.
44 */
45 UserTransactionProviderByJndiLookup( @UserTransactionJndiName String jndiName, JndiLookupHelper jndiLookupHelper )
46 {
47 this.jndiName = checkNotNull( jndiName, "jndiName is mandatory!" );
48 this.jndiLookupHelper = checkNotNull( jndiLookupHelper, "jndiLookupHelper is mandatory!" );
49 }
50
51 /**
52 * Gets a {@link UserTransaction} by looking it up in the JNDI context.
53 *
54 * @return the found entity user transaction
55 * @throws RuntimeException when no user transaction was found.
56 */
57 //@Override
58 public UserTransaction get()
59 {
60 return jndiLookupHelper.doJndiLookup( UserTransaction.class, jndiName );
61 }
62
63 }