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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.rat.analysis.matchers;
20  
21  import java.util.UUID;
22  
23  import org.apache.commons.lang3.StringUtils;
24  import org.apache.rat.analysis.IHeaderMatcher;
25  import org.apache.rat.config.parameters.ComponentType;
26  import org.apache.rat.config.parameters.ConfigComponent;
27  
28  /**
29   * An abstract class to simplify IHeaderMatcher creation. This class ensures
30   * that the id is set
31   */
32  public abstract class AbstractHeaderMatcher implements IHeaderMatcher {
33  
34      @ConfigComponent(type = ComponentType.PARAMETER, desc = "The id of the matcher.")
35      private final String id;
36  
37      /**
38       * Constructs the IHeaderMatcher with an id value. If {@code id} is null then a
39       * unique random id is created.
40       * 
41       * @param id the Id to use.
42       */
43      protected AbstractHeaderMatcher(String id) {
44          this.id = StringUtils.isBlank(id) ? UUID.randomUUID().toString() : id;
45      }
46  
47      @Override
48      public String getId() {
49          return id;
50      }
51  
52      @Override
53      public String toString() {
54          return getId();
55      }
56  }