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.commons.io.serialization;
20
21 import java.util.Objects;
22 import java.util.regex.Pattern;
23
24 /**
25 * A {@link ClassNameMatcher} that uses regular expressions.
26 * <p>
27 * This object is immutable and thread-safe.
28 * </p>
29 */
30 final class RegexpClassNameMatcher implements ClassNameMatcher {
31
32 private final Pattern pattern; // Class is thread-safe
33
34 /**
35 * Constructs an object based on the specified pattern.
36 *
37 * @param pattern a pattern for evaluating acceptable class names
38 * @throws NullPointerException if {@code pattern} is null
39 */
40 RegexpClassNameMatcher(final Pattern pattern) {
41 this.pattern = Objects.requireNonNull(pattern, "pattern");
42 }
43
44 /**
45 * Constructs an object based on the specified regular expression.
46 *
47 * @param regex a regular expression for evaluating acceptable class names
48 */
49 RegexpClassNameMatcher(final String regex) {
50 this(Pattern.compile(regex));
51 }
52
53 @Override
54 public boolean matches(final String className) {
55 return pattern.matcher(className).matches();
56 }
57 }