?? timespancriteria.html
字號:
<!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>TimespanCriteria xref</title><link type="text/css" rel="stylesheet" href="../../../../../stylesheet.css" /></head><body><div id="overview"><a href="../../../../../../apidocs/org/archive/crawler/settings/refinements/TimespanCriteria.html">View Javadoc</a></div><pre><a name="1" href="#1">1</a> <em class="comment">/*</em><a name="2" href="#2">2</a> <em class="comment"> * TimespanCriteria</em><a name="3" href="#3">3</a> <em class="comment"> *</em><a name="4" href="#4">4</a> <em class="comment"> * $Id: TimespanCriteria.java 3704 2005-07-18 17:30:21Z stack-sf $</em><a name="5" href="#5">5</a> <em class="comment"> *</em><a name="6" href="#6">6</a> <em class="comment"> * Created on Apr 8, 2004</em><a name="7" href="#7">7</a> <em class="comment"> *</em><a name="8" href="#8">8</a> <em class="comment"> * Copyright (C) 2004 Internet Archive.</em><a name="9" href="#9">9</a> <em class="comment"> *</em><a name="10" href="#10">10</a> <em class="comment"> * This file is part of the Heritrix web crawler (crawler.archive.org).</em><a name="11" href="#11">11</a> <em class="comment"> *</em><a name="12" href="#12">12</a> <em class="comment"> * Heritrix is free software; you can redistribute it and/or modify it under the</em><a name="13" href="#13">13</a> <em class="comment"> * terms of the GNU Lesser Public License as published by the Free Software</em><a name="14" href="#14">14</a> <em class="comment"> * Foundation; either version 2.1 of the License, or any later version.</em><a name="15" href="#15">15</a> <em class="comment"> *</em><a name="16" href="#16">16</a> <em class="comment"> * Heritrix is distributed in the hope that it will be useful, but WITHOUT ANY</em><a name="17" href="#17">17</a> <em class="comment"> * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR</em><a name="18" href="#18">18</a> <em class="comment"> * A PARTICULAR PURPOSE. See the GNU Lesser Public License for more details.</em><a name="19" href="#19">19</a> <em class="comment"> *</em><a name="20" href="#20">20</a> <em class="comment"> * You should have received a copy of the GNU Lesser Public License along with</em><a name="21" href="#21">21</a> <em class="comment"> * Heritrix; if not, write to the Free Software Foundation, Inc., 59 Temple</em><a name="22" href="#22">22</a> <em class="comment"> * Place, Suite 330, Boston, MA 02111-1307 USA</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/settings/refinements/package-summary.html">org.archive.crawler.settings.refinements</a>;<a name="25" href="#25">25</a> <a name="26" href="#26">26</a> <strong>import</strong> java.text.DateFormat;<a name="27" href="#27">27</a> <strong>import</strong> java.text.ParseException;<a name="28" href="#28">28</a> <strong>import</strong> java.text.SimpleDateFormat;<a name="29" href="#29">29</a> <strong>import</strong> java.util.Date;<a name="30" href="#30">30</a> <strong>import</strong> java.util.TimeZone;<a name="31" href="#31">31</a> <a name="32" href="#32">32</a> <strong>import</strong> org.archive.net.UURI;<a name="33" href="#33">33</a> <a name="34" href="#34">34</a> <em>/**<em>*</em></em><a name="35" href="#35">35</a> <em> * A refinement criteria that checks if a URI is requested within a specific</em><a name="36" href="#36">36</a> <em> * time frame. <p/></em><a name="37" href="#37">37</a> <em> *</em><a name="38" href="#38">38</a> <em> * The timeframe's resolution is minutes and always operates in 24h GMT. The</em><a name="39" href="#39">39</a> <em> * format is <code>hhmm</code>, exmaples:</em><a name="40" href="#40">40</a> <em> * <p></em><a name="41" href="#41">41</a> <em> * <code> 1200</code> for noon GMT <br></em><a name="42" href="#42">42</a> <em> * <code> 1805</code> for 5 minutes past six in the afternoon GMT.</em><a name="43" href="#43">43</a> <em> *</em><a name="44" href="#44">44</a> <em> * @author John Erik Halse</em><a name="45" href="#45">45</a> <em> */</em><a name="46" href="#46">46</a> <strong>public</strong> <strong>class</strong> <a href="../../../../../org/archive/crawler/settings/refinements/TimespanCriteria.html">TimespanCriteria</a> implements <a href="../../../../../org/archive/crawler/settings/refinements/Criteria.html">Criteria</a> {<a name="47" href="#47">47</a> <a name="48" href="#48">48</a> <strong>private</strong> <strong>static</strong> DateFormat timeFormat;<a name="49" href="#49">49</a> <strong>static</strong> {<a name="50" href="#50">50</a> <strong>final</strong> TimeZone TZ = TimeZone.getTimeZone(<span class="string">"GMT"</span>);<a name="51" href="#51">51</a> timeFormat = <strong>new</strong> SimpleDateFormat(<span class="string">"HHmm"</span>);<a name="52" href="#52">52</a> timeFormat.setTimeZone(TZ);<a name="53" href="#53">53</a> }<a name="54" href="#54">54</a> <a name="55" href="#55">55</a> <strong>private</strong> Date from;<a name="56" href="#56">56</a> <a name="57" href="#57">57</a> <strong>private</strong> Date to;<a name="58" href="#58">58</a> <a name="59" href="#59">59</a> <em>/**<em>*</em></em><a name="60" href="#60">60</a> <em> * Create a new instance of TimespanCriteria.</em><a name="61" href="#61">61</a> <em> *</em><a name="62" href="#62">62</a> <em> * @param from start of the time frame (inclusive).</em><a name="63" href="#63">63</a> <em> * @param to end of the time frame (inclusive).</em><a name="64" href="#64">64</a> <em> * @throws ParseException</em><a name="65" href="#65">65</a> <em> */</em><a name="66" href="#66">66</a> <strong>public</strong> <a href="../../../../../org/archive/crawler/settings/refinements/TimespanCriteria.html">TimespanCriteria</a>(String from, String to) throws ParseException {<a name="67" href="#67">67</a> setFrom(from);<a name="68" href="#68">68</a> setTo(to);<a name="69" href="#69">69</a> }<a name="70" href="#70">70</a> <a name="71" href="#71">71</a> <strong>public</strong> <strong>boolean</strong> isWithinRefinementBounds(<a href="../../../../../org/archive/net/UURI.html">UURI</a> uri) {<a name="72" href="#72">72</a> <strong>try</strong> {<a name="73" href="#73">73</a> Date now = timeFormat.parse(timeFormat.format(<strong>new</strong> Date()));<a name="74" href="#74">74</a> <strong>if</strong> (from.before(to)) {<a name="75" href="#75">75</a> <strong>if</strong> (now.getTime() >= from.getTime()<a name="76" href="#76">76</a> && now.getTime() <= to.getTime()) {<a name="77" href="#77">77</a> <strong>return</strong> <strong>true</strong>;<a name="78" href="#78">78</a> }<a name="79" href="#79">79</a> } <strong>else</strong> {<a name="80" href="#80">80</a> <strong>if</strong> (!(now.getTime() > to.getTime() && now.getTime() < from<a name="81" href="#81">81</a> .getTime())) {<a name="82" href="#82">82</a> <strong>return</strong> <strong>true</strong>;<a name="83" href="#83">83</a> }<a name="84" href="#84">84</a> }<a name="85" href="#85">85</a> } <strong>catch</strong> (ParseException e) {<a name="86" href="#86">86</a> <em class="comment">// Should never happen since we are only parsing system time at</em><a name="87" href="#87">87</a> <em class="comment">// this place.</em><a name="88" href="#88">88</a> e.printStackTrace();<a name="89" href="#89">89</a> }<a name="90" href="#90">90</a> <a name="91" href="#91">91</a> <strong>return</strong> false;<a name="92" href="#92">92</a> }<a name="93" href="#93">93</a> <a name="94" href="#94">94</a> <em>/**<em>*</em></em><a name="95" href="#95">95</a> <em> * Get the beginning of the time frame to check against.</em><a name="96" href="#96">96</a> <em> *</em><a name="97" href="#97">97</a> <em> * @return Returns the from.</em><a name="98" href="#98">98</a> <em> */</em><a name="99" href="#99">99</a> <strong>public</strong> String getFrom() {<a name="100" href="#100">100</a> <strong>return</strong> timeFormat.format(from);<a name="101" href="#101">101</a> }<a name="102" href="#102">102</a> <a name="103" href="#103">103</a> <em>/**<em>*</em></em><a name="104" href="#104">104</a> <em> * Set the beginning of the time frame to check against.</em><a name="105" href="#105">105</a> <em> *</em><a name="106" href="#106">106</a> <em> * @param from The from to set.</em><a name="107" href="#107">107</a> <em> * @throws ParseException</em><a name="108" href="#108">108</a> <em> */</em><a name="109" href="#109">109</a> <strong>public</strong> <strong>void</strong> setFrom(String from) throws ParseException {<a name="110" href="#110">110</a> <strong>this</strong>.from = timeFormat.parse(from);<a name="111" href="#111">111</a> }<a name="112" href="#112">112</a> <a name="113" href="#113">113</a> <em>/**<em>*</em></em><a name="114" href="#114">114</a> <em> * Get the end of the time frame to check against.</em><a name="115" href="#115">115</a> <em> *</em><a name="116" href="#116">116</a> <em> * @return Returns the to.</em><a name="117" href="#117">117</a> <em> */</em><a name="118" href="#118">118</a> <strong>public</strong> String getTo() {<a name="119" href="#119">119</a> <strong>return</strong> timeFormat.format(to);<a name="120" href="#120">120</a> }<a name="121" href="#121">121</a> <a name="122" href="#122">122</a> <em>/**<em>*</em></em><a name="123" href="#123">123</a> <em> * Set the end of the time frame to check against.</em><a name="124" href="#124">124</a> <em> *</em><a name="125" href="#125">125</a> <em> * @param to The to to set.</em><a name="126" href="#126">126</a> <em> * @throws ParseException</em><a name="127" href="#127">127</a> <em> */</em><a name="128" href="#128">128</a> <strong>public</strong> <strong>void</strong> setTo(String to) throws ParseException {<a name="129" href="#129">129</a> <strong>this</strong>.to = timeFormat.parse(to);<a name="130" href="#130">130</a> }<a name="131" href="#131">131</a> <a name="132" href="#132">132</a> <strong>public</strong> <strong>boolean</strong> equals(Object o) {<a name="133" href="#133">133</a> <strong>if</strong> (o instanceof TimespanCriteria) {<a name="134" href="#134">134</a> <a href="../../../../../org/archive/crawler/settings/refinements/TimespanCriteria.html">TimespanCriteria</a> other = (TimespanCriteria) o;<a name="135" href="#135">135</a> <strong>if</strong> (<strong>this</strong>.from.equals(other.from) && <strong>this</strong>.to.equals(other.to)) {<a name="136" href="#136">136</a> <strong>return</strong> <strong>true</strong>;<a name="137" href="#137">137</a> }<a name="138" href="#138">138</a> }<a name="139" href="#139">139</a> <strong>return</strong> false;<a name="140" href="#140">140</a> }<a name="141" href="#141">141</a> <a name="142" href="#142">142</a> <em class="comment">/*<em class="comment"> (non-Javadoc)</em></em><a name="143" href="#143">143</a> <em class="comment"> * @see org.archive.crawler.settings.refinements.Criteria#getName()</em><a name="144" href="#144">144</a> <em class="comment"> */</em><a name="145" href="#145">145</a> <strong>public</strong> String getName() {<a name="146" href="#146">146</a> <strong>return</strong> <span class="string">"Time of day criteria"</span>;<a name="147" href="#147">147</a> }<a name="148" href="#148">148</a> <a name="149" href="#149">149</a> <em class="comment">/*<em class="comment"> (non-Javadoc)</em></em><a name="150" href="#150">150</a> <em class="comment"> * @see org.archive.crawler.settings.refinements.Criteria#getDescription()</em><a name="151" href="#151">151</a> <em class="comment"> */</em><a name="152" href="#152">152</a> <strong>public</strong> String getDescription() {<a name="153" href="#153">153</a> <strong>return</strong> <span class="string">"Accept any URIs between the hours of "</span> + getFrom() + <span class="string">"(GMT) and "</span><a name="154" href="#154">154</a> + getTo() + <span class="string">"(GMT) each day."</span>;<a name="155" href="#155">155</a> }<a name="156" href="#156">156</a> }</pre><hr/><div id="footer">This page was automatically generated by <a href="http://maven.apache.org/">Maven</a></div></body></html>?? 快捷鍵說明
復(fù)制代碼
Ctrl + C
搜索代碼
Ctrl + F
全屏模式
F11
切換主題
Ctrl + Shift + D
顯示快捷鍵
?
增大字號
Ctrl + =
減小字號
Ctrl + -