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.proxy.interceptor.filter;
19
20 import org.apache.commons.proxy.interceptor.MethodFilter;
21
22 import java.lang.reflect.Method;
23 import java.util.Arrays;
24 import java.util.HashSet;
25 import java.util.Set;
26
27 /**
28 * A simple method filter implementation that merely returns true if the method's name is in a set of accepted names.
29 *
30 * @author James Carman
31 * @since 1.0
32 */
33 public class SimpleFilter implements MethodFilter
34 {
35 //----------------------------------------------------------------------------------------------------------------------
36 // Fields
37 //----------------------------------------------------------------------------------------------------------------------
38
39 private final Set methodNames;
40
41 //----------------------------------------------------------------------------------------------------------------------
42 // Constructors
43 //----------------------------------------------------------------------------------------------------------------------
44
45 /**
46 * Creates a simple filter that accepts no methods.
47 */
48 public SimpleFilter()
49 {
50 this.methodNames = new HashSet();
51 }
52
53 /**
54 * Creates a simple filter that accepts methods matching the supplied names.
55 * @param methodNames the names
56 */
57 public SimpleFilter( String[] methodNames )
58 {
59 this.methodNames = new HashSet( Arrays.asList( methodNames ) );
60 }
61
62 //----------------------------------------------------------------------------------------------------------------------
63 // MethodFilter Implementation
64 //----------------------------------------------------------------------------------------------------------------------
65
66 public boolean accepts( Method method )
67 {
68 return methodNames.contains( method.getName() );
69 }
70 }
71