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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"><head><meta http-equiv="content-type" content="text/html; charset=UTF-8" /><title>ScopePlusOneDecideRule xref</title><link type="text/css" rel="stylesheet" href="../../../../stylesheet.css" /></head><body><div id="overview"><a href="../../../../../apidocs/org/archive/crawler/deciderules/ScopePlusOneDecideRule.html">View Javadoc</a></div><pre><a name="1" href="#1">1</a> <em class="comment">/*<em class="comment"> ScopePlusOneDecideRule</em></em><a name="2" href="#2">2</a> <em class="comment">*</em><a name="3" href="#3">3</a> <em class="comment">* Created on Aug 22, 2005</em><a name="4" href="#4">4</a> <em class="comment">*</em><a name="5" href="#5">5</a> <em class="comment">* Copyright 2005 Regents of the University of California, All rights reserved</em><a name="6" href="#6">6</a> <em class="comment">*</em><a name="7" href="#7">7</a> <em class="comment">* This file is part of the Heritrix web crawler (crawler.archive.org).</em><a name="8" href="#8">8</a> <em class="comment">*</em><a name="9" href="#9">9</a> <em class="comment">* Heritrix is free software; you can redistribute it and/or modify</em><a name="10" href="#10">10</a> <em class="comment">* it under the terms of the GNU Lesser Public License as published by</em><a name="11" href="#11">11</a> <em class="comment">* the Free Software Foundation; either version 2.1 of the License, or</em><a name="12" href="#12">12</a> <em class="comment">* any later version.</em><a name="13" href="#13">13</a> <em class="comment">*</em><a name="14" href="#14">14</a> <em class="comment">* Heritrix is distributed in the hope that it will be useful,</em><a name="15" href="#15">15</a> <em class="comment">* but WITHOUT ANY WARRANTY; without even the implied warranty of</em><a name="16" href="#16">16</a> <em class="comment">* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</em><a name="17" href="#17">17</a> <em class="comment">* GNU Lesser Public License for more details.</em><a name="18" href="#18">18</a> <em class="comment">*</em><a name="19" href="#19">19</a> <em class="comment">* You should have received a copy of the GNU Lesser Public License</em><a name="20" href="#20">20</a> <em class="comment">* along with Heritrix; if not, write to the Free Software</em><a name="21" href="#21">21</a> <em class="comment">* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA</em><a name="22" href="#22">22</a> <em class="comment">*/</em><a name="23" href="#23">23</a> <strong>package</strong> <a href="../../../../org/archive/crawler/deciderules/package-summary.html">org.archive.crawler.deciderules</a>;<a name="24" href="#24">24</a> <a name="25" href="#25">25</a> <strong>import</strong> java.util.logging.Level;<a name="26" href="#26">26</a> <strong>import</strong> java.util.logging.Logger;<a name="27" href="#27">27</a> <a name="28" href="#28">28</a> <strong>import</strong> javax.management.AttributeNotFoundException;<a name="29" href="#29">29</a> <a name="30" href="#30">30</a> <strong>import</strong> org.archive.crawler.datamodel.CandidateURI;<a name="31" href="#31">31</a> <strong>import</strong> org.archive.crawler.settings.SimpleType;<a name="32" href="#32">32</a> <strong>import</strong> org.archive.net.UURI;<a name="33" href="#33">33</a> <strong>import</strong> org.archive.util.SurtPrefixSet;<a name="34" href="#34">34</a> <a name="35" href="#35">35</a> <em>/**<em>*</em></em><a name="36" href="#36">36</a> <em> * Rule allows one level of discovery beyond configured scope</em><a name="37" href="#37">37</a> <em> * (e.g. Domain, plus the first otherwise out-of-scope link from an</em><a name="38" href="#38">38</a> <em> * in-scope page, but not further hops from that first page)</em><a name="39" href="#39">39</a> <em> *</em><a name="40" href="#40">40</a> <em> * @author Shifra Raffel</em><a name="41" href="#41">41</a> <em> * @version $Date: 2005/09/01 19:18:05 $ $Revision: 1.1 $</em><a name="42" href="#42">42</a> <em> */</em><a name="43" href="#43">43</a> <strong>public</strong> <strong>class</strong> <a href="../../../../org/archive/crawler/deciderules/ScopePlusOneDecideRule.html">ScopePlusOneDecideRule</a> <strong>extends</strong> <a href="../../../../org/archive/crawler/deciderules/SurtPrefixedDecideRule.html">SurtPrefixedDecideRule</a> {<a name="44" href="#44">44</a> <strong>public</strong> <strong>static</strong> <strong>final</strong> String ATTR_SCOPE = <span class="string">"host-or-domain-scope"</span>;<a name="45" href="#45">45</a> <strong>public</strong> <strong>static</strong> <strong>final</strong> String HOST = <span class="string">"Host"</span>;<a name="46" href="#46">46</a> <strong>public</strong> <strong>static</strong> <strong>final</strong> String DOMAIN = <span class="string">"Domain"</span>;<a name="47" href="#47">47</a> <a name="48" href="#48">48</a> <strong>private</strong> <strong>static</strong> <strong>final</strong> Logger logger =<a name="49" href="#49">49</a> Logger.getLogger(ScopePlusOneDecideRule.<strong>class</strong>.getName());<a name="50" href="#50">50</a> <a name="51" href="#51">51</a> <em>/**<em>*</em></em><a name="52" href="#52">52</a> <em> * Constructor.</em><a name="53" href="#53">53</a> <em> * @param name</em><a name="54" href="#54">54</a> <em> */</em><a name="55" href="#55">55</a> <strong>public</strong> <a href="../../../../org/archive/crawler/deciderules/ScopePlusOneDecideRule.html">ScopePlusOneDecideRule</a>(String name) {<a name="56" href="#56">56</a> <strong>super</strong>(name);<a name="57" href="#57">57</a> setDescription(<a name="58" href="#58">58</a> <span class="string">"ScopePlusOneDecideRule. Rule allows one level of discovery "</span> +<a name="59" href="#59">59</a> <span class="string">"beyond configured scope (e.g. Domain, plus the first "</span> +<a name="60" href="#60">60</a> <span class="string">"otherwise out-of-scope link from an in-scope page, but "</span> +<a name="61" href="#61">61</a> <span class="string">"no further hops from that first otherwise-out-of-scope page). "</span> +<a name="62" href="#62">62</a> <span class="string">"surts-source-file is optional. Use surts-dump-file option "</span> +<a name="63" href="#63">63</a> <span class="string">"when testing."</span>);<a name="64" href="#64">64</a> addElementToDefinition(<strong>new</strong> <a href="../../../../org/archive/crawler/settings/SimpleType.html">SimpleType</a>(ATTR_SCOPE,<a name="65" href="#65">65</a> <span class="string">"Restrict to host, e.g. archive.org excludes audio.archive.org, "</span> +<a name="66" href="#66">66</a> <span class="string">"or expand to domain as well, e.g. archive.org includes all "</span> +<a name="67" href="#67">67</a> <span class="string">"*.archive.org"</span>, DOMAIN, <strong>new</strong> String[] {HOST, DOMAIN}));<a name="68" href="#68">68</a> }<a name="69" href="#69">69</a> <a name="70" href="#70">70</a> <em>/**<em>*</em></em><a name="71" href="#71">71</a> <em> * Evaluate whether given object comes from a URI which is in scope</em><a name="72" href="#72">72</a> <em> *</em><a name="73" href="#73">73</a> <em> * @param object to evaluate</em><a name="74" href="#74">74</a> <em> * @return true if URI is either in scope or its via is</em><a name="75" href="#75">75</a> <em> */</em><a name="76" href="#76">76</a> <strong>protected</strong> <strong>boolean</strong> evaluate(Object object) {<a name="77" href="#77">77</a> <strong>boolean</strong> result = false;<a name="78" href="#78">78</a> <strong>if</strong> (!(object instanceof CandidateURI)) {<a name="79" href="#79">79</a> <em class="comment">// Can't evaluate if not a candidate URI</em><a name="80" href="#80">80</a> <strong>return</strong> false; <a name="81" href="#81">81</a> }<a name="82" href="#82">82</a> <a href="../../../../org/archive/util/SurtPrefixSet.html">SurtPrefixSet</a> set = getPrefixes(object);<a name="83" href="#83">83</a> <a href="../../../../org/archive/net/UURI.html">UURI</a> u = UURI.from(object);<a name="84" href="#84">84</a> <em class="comment">// First, is the URI itself in scope?</em><a name="85" href="#85">85</a> <strong>boolean</strong> firstResult = isInScope(u, set);<a name="86" href="#86">86</a> <strong>if</strong> (logger.isLoggable(Level.FINE)) {<a name="87" href="#87">87</a> logger.fine(<span class="string">"Tested scope of UURI itself '"</span> + u +<a name="88" href="#88">88</a> <span class="string">" and result was "</span> + firstResult);<a name="89" href="#89">89</a> } <a name="90" href="#90">90</a> <strong>if</strong> (firstResult == <strong>true</strong>) {<a name="91" href="#91">91</a> result = <strong>true</strong>;<a name="92" href="#92">92</a> } <strong>else</strong> {<a name="93" href="#93">93</a> <em class="comment">// This object is not itself within scope, but</em><a name="94" href="#94">94</a> <em class="comment">// see whether its via might be</em><a name="95" href="#95">95</a> <a href="../../../../org/archive/net/UURI.html">UURI</a> via = getVia(object);<a name="96" href="#96">96</a> <strong>if</strong> (via == <strong>null</strong>) {⌨️ 快捷键说明
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