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.commons.proxy2.interceptor;
19
20 import org.apache.commons.lang3.Validate;
21 import org.apache.commons.proxy2.Interceptor;
22 import org.apache.commons.proxy2.Invocation;
23 import org.apache.commons.proxy2.ObjectProvider;
24
25 /**
26 * A {@link ObjectProviderInterceptor} merely returns the value returned from
27 * {@link org.apache.commons.proxy2.ObjectProvider#getObject()}.
28 */
29 public class ObjectProviderInterceptor implements Interceptor
30 {
31 private static final long serialVersionUID = 1L;
32
33 //******************************************************************************************************************
34 // Fields
35 //******************************************************************************************************************
36
37 private final ObjectProvider<?> provider;
38
39 //******************************************************************************************************************
40 // Constructors
41 //******************************************************************************************************************
42
43 public ObjectProviderInterceptor(ObjectProvider<?> provider)
44 {
45 this.provider = Validate.notNull(provider, "Provider cannot be null.");
46 }
47
48 //******************************************************************************************************************
49 // Interceptor Implementation
50 //******************************************************************************************************************
51
52 @Override
53 public Object intercept(Invocation invocation) throws Throwable
54 {
55 return provider.getObject();
56 }
57 }