1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing,
13 * software distributed under the License is distributed on an
14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15 * KIND, either express or implied. See the License for the
16 * specific language governing permissions and limitations
17 * under the License.
18 */
19 package org.apache.shiro.jndi;
20
21 import org.apache.shiro.util.Factory;
22
23 import javax.naming.NamingException;
24
25 /**
26 * A factory implementation intended to be used to look up objects in jndi.
27 * @param <T>
28 * @since 1.2
29 */
30 public class JndiObjectFactory<T> extends JndiLocator implements Factory<T> {
31
32 private String resourceName;
33 private Class<? extends T> requiredType;
34
35 public T getInstance() {
36 try {
37 if(requiredType != null) {
38 return requiredType.cast(this.lookup(resourceName, requiredType));
39 } else {
40 return (T) this.lookup(resourceName);
41 }
42 } catch (NamingException e) {
43 final String typeName = requiredType != null ? requiredType.getName() : "object";
44 throw new IllegalStateException("Unable to look up " + typeName + " with jndi name '" + resourceName + "'.", e);
45 }
46 }
47
48 public String getResourceName() {
49 return resourceName;
50 }
51
52 public void setResourceName(String resourceName) {
53 this.resourceName = resourceName;
54 }
55
56 public Class<? extends T> getRequiredType() {
57 return requiredType;
58 }
59
60 public void setRequiredType(Class<? extends T> requiredType) {
61 this.requiredType = requiredType;
62 }
63 }