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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>BroadScope xref</title><link type="text/css" rel="stylesheet" href="../../../../stylesheet.css" /></head><body><div id="overview"><a href="../../../../../apidocs/org/archive/crawler/scope/BroadScope.html">View Javadoc</a></div><pre><a name="1" href="#1">1</a> <em class="comment">/*<em class="comment"> Copyright (C) 2003 Internet Archive.</em></em><a name="2" href="#2">2</a> <em class="comment"> *</em><a name="3" href="#3">3</a> <em class="comment"> * This file is part of the Heritrix web crawler (crawler.archive.org).</em><a name="4" href="#4">4</a> <em class="comment"> *</em><a name="5" href="#5">5</a> <em class="comment"> * Heritrix is free software; you can redistribute it and/or modify</em><a name="6" href="#6">6</a> <em class="comment"> * it under the terms of the GNU Lesser Public License as published by</em><a name="7" href="#7">7</a> <em class="comment"> * the Free Software Foundation; either version 2.1 of the License, or</em><a name="8" href="#8">8</a> <em class="comment"> * any later version.</em><a name="9" href="#9">9</a> <em class="comment"> *</em><a name="10" href="#10">10</a> <em class="comment"> * Heritrix is distributed in the hope that it will be useful,</em><a name="11" href="#11">11</a> <em class="comment"> * but WITHOUT ANY WARRANTY; without even the implied warranty of</em><a name="12" href="#12">12</a> <em class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</em><a name="13" href="#13">13</a> <em class="comment"> * GNU Lesser Public License for more details.</em><a name="14" href="#14">14</a> <em class="comment"> *</em><a name="15" href="#15">15</a> <em class="comment"> * You should have received a copy of the GNU Lesser Public License</em><a name="16" href="#16">16</a> <em class="comment"> * along with Heritrix; if not, write to the Free Software</em><a name="17" href="#17">17</a> <em class="comment"> * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA</em><a name="18" href="#18">18</a> <em class="comment"> *</em><a name="19" href="#19">19</a> <em class="comment"> * CrawlScope.java</em><a name="20" href="#20">20</a> <em class="comment"> * Created on Oct 1, 2003</em><a name="21" href="#21">21</a> <em class="comment"> *</em><a name="22" href="#22">22</a> <em class="comment"> * $Header: /cvsroot/archive-crawler/ArchiveOpenCrawler/src/java/org/archive/crawler/scope/BroadScope.java,v 1.18 2005/06/10 00:24:54 stack-sf Exp $</em><a name="23" href="#23">23</a> <em class="comment"> */</em><a name="24" href="#24">24</a> <strong>package</strong> <a href="../../../../org/archive/crawler/scope/package-summary.html">org.archive.crawler.scope</a>;<a name="25" href="#25">25</a> <a name="26" href="#26">26</a> <a name="27" href="#27">27</a> <em>/**<em>*</em></em><a name="28" href="#28">28</a> <em> * A CrawlScope instance defines which URIs are "in"</em><a name="29" href="#29">29</a> <em> * a particular crawl.</em><a name="30" href="#30">30</a> <em> *</em><a name="31" href="#31">31</a> <em> * It is essentially a Filter which determines, looking at</em><a name="32" href="#32">32</a> <em> * the totality of information available about a</em><a name="33" href="#33">33</a> <em> * CandidateURI/CrawlURI instamce, if that URI should be</em><a name="34" href="#34">34</a> <em> * scheduled for crawling.</em><a name="35" href="#35">35</a> <em> *</em><a name="36" href="#36">36</a> <em> * <p>Dynamic information inherent in the discovery of the</em><a name="37" href="#37">37</a> <em> * URI -- such as the path by which it was discovered --</em><a name="38" href="#38">38</a> <em> * may be considered.</em><a name="39" href="#39">39</a> <em> *</em><a name="40" href="#40">40</a> <em> * <p>Dynamic information which requires the consultation</em><a name="41" href="#41">41</a> <em> * of external and potentially volatile information --</em><a name="42" href="#42">42</a> <em> * such as current robots.txt requests and the history</em><a name="43" href="#43">43</a> <em> * of attempts to crawl the same URI -- should NOT be</em><a name="44" href="#44">44</a> <em> * considered. Those potentially high-latency decisions</em><a name="45" href="#45">45</a> <em> * should be made at another step. .</em><a name="46" href="#46">46</a> <em> *</em><a name="47" href="#47">47</a> <em> * @author gojomo</em><a name="48" href="#48">48</a> <em> *</em><a name="49" href="#49">49</a> <em> */</em><a name="50" href="#50">50</a> <strong>public</strong> <strong>class</strong> <a href="../../../../org/archive/crawler/scope/BroadScope.html">BroadScope</a> <strong>extends</strong> <a href="../../../../org/archive/crawler/scope/ClassicScope.html">ClassicScope</a> {<a name="51" href="#51">51</a> <a name="52" href="#52">52</a> <em>/**<em>*</em></em><a name="53" href="#53">53</a> <em> * Constructor.</em><a name="54" href="#54">54</a> <em> *</em><a name="55" href="#55">55</a> <em> * @param name Name of this crawlscope.</em><a name="56" href="#56">56</a> <em> */</em><a name="57" href="#57">57</a> <strong>public</strong> <a href="../../../../org/archive/crawler/scope/BroadScope.html">BroadScope</a>(String name) {<a name="58" href="#58">58</a> <strong>super</strong>(name);<a name="59" href="#59">59</a> setDescription(<span class="string">"BroadScope: A scope for broad crawls. Crawls made"</span> +<a name="60" href="#60">60</a> <span class="string">" with this scope will not be limited to the hosts or domains of"</span> +<a name="61" href="#61">61</a> <span class="string">" its seeds. NOTE: BroadScoped crawls will eventually run out of"</span> +<a name="62" href="#62">62</a> <span class="string">" memory (See Release Notes)."</span>);<a name="63" href="#63">63</a> }<a name="64" href="#64">64</a> <a name="65" href="#65">65</a> <em>/**<em>*</em></em><a name="66" href="#66">66</a> <em> * @param o the URI to check.</em><a name="67" href="#67">67</a> <em> * @return True if transitive filter accepts passed object.</em><a name="68" href="#68">68</a> <em> */</em><a name="69" href="#69">69</a> <strong>protected</strong> <strong>boolean</strong> transitiveAccepts(Object o) {<a name="70" href="#70">70</a> <strong>return</strong> <strong>true</strong>;<a name="71" href="#71">71</a> }<a name="72" href="#72">72</a> <a name="73" href="#73">73</a> <em>/**<em>* Check if URI is accepted by the focus of this scope.</em></em><a name="74" href="#74">74</a> <em> *</em><a name="75" href="#75">75</a> <em> * This method should be overridden in subclasses.</em><a name="76" href="#76">76</a> <em> *</em><a name="77" href="#77">77</a> <em> * @param o the URI to check.</em><a name="78" href="#78">78</a> <em> * @return True if focus filter accepts passed object.</em><a name="79" href="#79">79</a> <em> */</em><a name="80" href="#80">80</a> <strong>protected</strong> <strong>boolean</strong> focusAccepts(Object o) {<a name="81" href="#81">81</a> <strong>return</strong> <strong>true</strong>;<a name="82" href="#82">82</a> }<a name="83" href="#83">83</a> }</pre><hr/><div id="footer">This page was automatically generated by <a href="http://maven.apache.org/">Maven</a></div></body></html>⌨️ 快捷键说明
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