##### Coverage Report - org.apache.any23.plugin.crawler.SharedData

Classes in this File | Line Coverage | Branch Coverage | Complexity
SharedData |
0% | 0/16
0% | 0/8
| 2.0;2

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.any23.plugin.crawler;
19 |  |
20 |  |
     import edu.uci.ics.crawler4j.crawler.Page;
21 |  |
22 |  |
     import java.util.List;
23 |  |
     import java.util.regex.Pattern;
24 |  |
25 |  |
     /**
26 |  |
      * This class hosts shared data structures accessible
27 |  |
      * to all the {@link DefaultWebCrawler} instances
28 |  |
      * run by the {@link SiteCrawler}.
29 |  |
      *
30 |  |
      * @author Michele Mostarda (mostarda@fbk.eu)
31 |  |
      */
32 |  |
     public class SharedData {
33 |  |
34 |  |
         /**
35 |  |
          * Singleton instance.
36 |  |
          */
37 |  |
         private static SharedData instance;
38 |  |
39 |  |
         /**
40 |  |
          * Crawl seed.
41 |  |
          */
42 |  |
         private final String seed;
43 |  |
44 |  |
         /**
45 |  |
          * Crawl page filter pattern.
46 |  |
          */
47 |  |
         private final Pattern pattern;
48 |  |
49 |  |
         /**
50 |  |
          * List of crawler listeners.
51 |  |
          */
52 |  |
         private final List<CrawlerListener> listeners;
53 |  |
54 |  |
     //    /**
55 |  |
     //     * Output triple handler.
56 |  |
     //     */
57 |  |
     //    private final TripleHandler tripleHandler;
58 |  |
59 |  |
         /**
60 |  |
          * @return the singleton instance.
61 |  |
          */
62 |  |
         protected static SharedData getInstance() {
63 | 0 |
             if(instance == null) throw new IllegalStateException("The configuration has not yet initialized.");
64 | 0 |
             return instance;
65 |  |
         }
66 |  |
67 |  |
         /**
68 |  |
          * Initializes the crawler data.
69 |  |
          *
70 |  |
          * @param seed crawler seed.
71 |  |
          * @param regex page filter regex.
72 |  |
          * @param listeners the listeners to be notified of the crawler activity.
73 |  |
          */
74 |  |
         protected static void setCrawlData(String seed, Pattern regex, List<CrawlerListener> listeners) {
75 | 0 |
             instance = new SharedData(seed, regex, listeners);
76 | 0 |
         }
77 |  |
78 |  |
         /**
79 |  |
          * Internal constructor.
80 |  |
          *
81 |  |
          * @param seed
82 |  |
          * @param pattern
83 |  |
          * @param listeners
84 |  |
          */
85 | 0 |
         private SharedData(String seed, Pattern pattern, List<CrawlerListener> listeners) {
86 | 0 |
             if(seed == null || seed.trim().length() == 0)
87 | 0 |
                 throw new IllegalArgumentException(
88 |  |
                     String.format("Invalid seed '%s'", seed)
89 |  |
                 );
90 |  |
91 | 0 |
             this.seed      = seed;
92 | 0 |
             this.pattern   = pattern;
93 | 0 |
             this.listeners = listeners;
94 | 0 |
         }
95 |  |
96 |  |
         /**
97 |  |
          * @return crawl seed.
98 |  |
          */
99 |  |
         protected String getSeed() {
100 | 0 |
             return seed;
101 |  |
         }
102 |  |
103 |  |
         /**
104 |  |
          * @return page filter pattern.
105 |  |
          */
106 |  |
         protected Pattern getPattern() {
107 | 0 |
             return pattern;
108 |  |
         }
109 |  |
110 |  |
         /**
111 |  |
          * Notifies all listeners that a page has been discovered.
112 |  |
          *
113 |  |
          * @param page the discovered page.
114 |  |
          */
115 |  |
         protected void notifyPage(Page page) {
116 | 0 |
             for(CrawlerListener listener : listeners) {
117 | 0 |
                 listener.visitedPage(page);
118 |  |
             }
119 | 0 |
         }
120 |  |
121 |  |
     }