surtprefixeddeciderule.html

用JAVA编写的,在做实验的时候留下来的,本来想删的,但是传上来,大家分享吧

<a name="142" href="#142">142</a>                     .booleanValue()) {
<a name="143" href="#143">143</a>             <strong>if</strong>(evaluate(((CandidateURI)object).getVia())) {
<a name="144" href="#144">144</a>                 <strong>return</strong> <strong>true</strong>;
<a name="145" href="#145">145</a>             }
<a name="146" href="#146">146</a>         }
<a name="147" href="#147">147</a>         String candidateSurt;
<a name="148" href="#148">148</a>         candidateSurt = SurtPrefixSet.getCandidateSurt(object);
<a name="149" href="#149">149</a>         <strong>if</strong> (candidateSurt == <strong>null</strong>) {
<a name="150" href="#150">150</a>             <strong>return</strong> false;
<a name="151" href="#151">151</a>         }
<a name="152" href="#152">152</a>         <strong>return</strong> getPrefixes().containsPrefixOf(candidateSurt);
<a name="153" href="#153">153</a>     }
<a name="154" href="#154">154</a> 
<a name="155" href="#155">155</a>     <em>/**<em>*</em></em>
<a name="156" href="#156">156</a> <em>     * Synchronized get of prefix set to use</em>
<a name="157" href="#157">157</a> <em>     * </em>
<a name="158" href="#158">158</a> <em>     * @return SurtPrefixSet to use for check</em>
<a name="159" href="#159">159</a> <em>     */</em>
<a name="160" href="#160">160</a>     <strong>private</strong> <strong>synchronized</strong> <a href="../../../../org/archive/util/SurtPrefixSet.html">SurtPrefixSet</a> getPrefixes() {
<a name="161" href="#161">161</a>         <strong>if</strong> (surtPrefixes == <strong>null</strong>) {
<a name="162" href="#162">162</a>             readPrefixes();
<a name="163" href="#163">163</a>         }
<a name="164" href="#164">164</a>         <strong>return</strong> surtPrefixes;
<a name="165" href="#165">165</a>     }
<a name="166" href="#166">166</a> 
<a name="167" href="#167">167</a>     <strong>protected</strong> <strong>void</strong> readPrefixes() {
<a name="168" href="#168">168</a>         buildSurtPrefixSet();
<a name="169" href="#169">169</a>         dumpSurtPrefixSet();
<a name="170" href="#170">170</a>     }
<a name="171" href="#171">171</a>     
<a name="172" href="#172">172</a>     <em>/**<em>*</em></em>
<a name="173" href="#173">173</a> <em>     * Dump the current prefixes in use to configured dump file (if any)</em>
<a name="174" href="#174">174</a> <em>     */</em>
<a name="175" href="#175">175</a>     <strong>protected</strong> <strong>void</strong> dumpSurtPrefixSet() {
<a name="176" href="#176">176</a>         <em class="comment">// dump surts to file, if appropriate</em>
<a name="177" href="#177">177</a>         String dumpPath = (String)getUncheckedAttribute(<strong>null</strong>,
<a name="178" href="#178">178</a>             ATTR_SURTS_DUMP_FILE);
<a name="179" href="#179">179</a>         <strong>if</strong> (dumpPath.length() > 0) {
<a name="180" href="#180">180</a>             File dump = <strong>new</strong> File(dumpPath);
<a name="181" href="#181">181</a>             <strong>if</strong> (!dump.isAbsolute()) {
<a name="182" href="#182">182</a>                 dump = <strong>new</strong> File(getSettingsHandler().getOrder().getController()
<a name="183" href="#183">183</a>                     .getDisk(), dumpPath);
<a name="184" href="#184">184</a>             }
<a name="185" href="#185">185</a>             <strong>try</strong> {
<a name="186" href="#186">186</a>                 FileWriter fw = <strong>new</strong> FileWriter(dump);
<a name="187" href="#187">187</a>                 <strong>try</strong> {
<a name="188" href="#188">188</a>                     surtPrefixes.exportTo(fw);
<a name="189" href="#189">189</a>                 } <strong>finally</strong> {
<a name="190" href="#190">190</a>                     fw.close();
<a name="191" href="#191">191</a>                 }
<a name="192" href="#192">192</a>             } <strong>catch</strong> (IOException e) {
<a name="193" href="#193">193</a>                 e.printStackTrace();
<a name="194" href="#194">194</a>                 <strong>throw</strong> <strong>new</strong> RuntimeException(e);
<a name="195" href="#195">195</a>             }
<a name="196" href="#196">196</a>         }
<a name="197" href="#197">197</a>     }
<a name="198" href="#198">198</a> 
<a name="199" href="#199">199</a>     <em>/**<em>*</em></em>
<a name="200" href="#200">200</a> <em>     * Construct the set of prefixes to use, from the seed list (</em>
<a name="201" href="#201">201</a> <em>     * which may include both URIs and '+'-prefixed directives).</em>
<a name="202" href="#202">202</a> <em>     */</em>
<a name="203" href="#203">203</a>     <strong>protected</strong> <strong>void</strong> buildSurtPrefixSet() {
<a name="204" href="#204">204</a>         <a href="../../../../org/archive/util/SurtPrefixSet.html">SurtPrefixSet</a> <strong>new</strong>SurtPrefixes = <strong>new</strong> <a href="../../../../org/archive/util/SurtPrefixSet.html">SurtPrefixSet</a>();
<a name="205" href="#205">205</a>         FileReader fr = <strong>null</strong>;
<a name="206" href="#206">206</a> 
<a name="207" href="#207">207</a>         <em class="comment">// read SURTs from file, if appropriate</em>
<a name="208" href="#208">208</a>         String sourcePath = (String)getUncheckedAttribute(<strong>null</strong>,
<a name="209" href="#209">209</a>                 ATTR_SURTS_SOURCE_FILE);
<a name="210" href="#210">210</a>         <strong>if</strong> (sourcePath.length() > 0) {
<a name="211" href="#211">211</a>             File source = <strong>new</strong> File(sourcePath);
<a name="212" href="#212">212</a>             <strong>if</strong> (!source.isAbsolute()) {
<a name="213" href="#213">213</a>                 source = <strong>new</strong> File(getSettingsHandler().getOrder()
<a name="214" href="#214">214</a>                     .getController().getDisk(), sourcePath);
<a name="215" href="#215">215</a>             }
<a name="216" href="#216">216</a>             <strong>try</strong> {
<a name="217" href="#217">217</a>                 fr = <strong>new</strong> FileReader(source);
<a name="218" href="#218">218</a>                 <strong>try</strong> {
<a name="219" href="#219">219</a>                     newSurtPrefixes.importFromMixed(fr, <strong>true</strong>);
<a name="220" href="#220">220</a>                 } <strong>finally</strong> {
<a name="221" href="#221">221</a>                     fr.close();
<a name="222" href="#222">222</a>                 }
<a name="223" href="#223">223</a>             } <strong>catch</strong> (IOException e) {
<a name="224" href="#224">224</a>                 e.printStackTrace();
<a name="225" href="#225">225</a>                 <strong>throw</strong> <strong>new</strong> RuntimeException(e);
<a name="226" href="#226">226</a>             }
<a name="227" href="#227">227</a>         }
<a name="228" href="#228">228</a>         
<a name="229" href="#229">229</a>         <em class="comment">// interpret seeds as surts, if appropriate</em>
<a name="230" href="#230">230</a>         <strong>boolean</strong> deduceFromSeeds = ((Boolean)getUncheckedAttribute(<strong>null</strong>,
<a name="231" href="#231">231</a>                 ATTR_SEEDS_AS_SURT_PREFIXES)).booleanValue();
<a name="232" href="#232">232</a>         <strong>if</strong>(deduceFromSeeds) {
<a name="233" href="#233">233</a>             <strong>try</strong> {
<a name="234" href="#234">234</a>                 fr = <strong>new</strong> FileReader(getSeedfile());
<a name="235" href="#235">235</a>                 <strong>try</strong> {
<a name="236" href="#236">236</a>                     newSurtPrefixes.importFromMixed(fr, deduceFromSeeds);
<a name="237" href="#237">237</a>                 } <strong>finally</strong> {
<a name="238" href="#238">238</a>                     fr.close();
<a name="239" href="#239">239</a>                 }
<a name="240" href="#240">240</a>             } <strong>catch</strong> (IOException e) {
<a name="241" href="#241">241</a>                 e.printStackTrace();
<a name="242" href="#242">242</a>                 <strong>throw</strong> <strong>new</strong> RuntimeException(e);
<a name="243" href="#243">243</a>             }
<a name="244" href="#244">244</a>         }
<a name="245" href="#245">245</a> 
<a name="246" href="#246">246</a>         surtPrefixes = newSurtPrefixes;
<a name="247" href="#247">247</a>     }
<a name="248" href="#248">248</a> 
<a name="249" href="#249">249</a>     <em>/**<em>*</em></em>
<a name="250" href="#250">250</a> <em>     * Re-read prefixes after an update.</em>
<a name="251" href="#251">251</a> <em>     * </em>
<a name="252" href="#252">252</a> <em>     * @see org.archive.crawler.framework.CrawlScope#kickUpdate()</em>
<a name="253" href="#253">253</a> <em>     */</em>
<a name="254" href="#254">254</a>     <strong>public</strong> <strong>synchronized</strong> <strong>void</strong> kickUpdate() {
<a name="255" href="#255">255</a>         <strong>super</strong>.kickUpdate();
<a name="256" href="#256">256</a>         <strong>if</strong> (((Boolean) getUncheckedAttribute(<strong>null</strong>, ATTR_REBUILD_ON_RECONFIG))
<a name="257" href="#257">257</a>                 .booleanValue()) {
<a name="258" href="#258">258</a>             readPrefixes();
<a name="259" href="#259">259</a>         }
<a name="260" href="#260">260</a>         <em class="comment">// TODO: make conditional on file having actually changed,</em>
<a name="261" href="#261">261</a>         <em class="comment">// perhaps by remembering mod-time</em>
<a name="262" href="#262">262</a>     }
<a name="263" href="#263">263</a> 
<a name="264" href="#264">264</a>     <em>/**<em>*</em></em>
<a name="265" href="#265">265</a> <em>     * Dig through everything to get the crawl-global seeds file. </em>
<a name="266" href="#266">266</a> <em>     * Add self as listener while at it. </em>
<a name="267" href="#267">267</a> <em>     * </em>
<a name="268" href="#268">268</a> <em>     * @return Seed list file</em>
<a name="269" href="#269">269</a> <em>     */</em>
<a name="270" href="#270">270</a>     <strong>protected</strong> File getSeedfile() {
<a name="271" href="#271">271</a>         <a href="../../../../org/archive/crawler/framework/CrawlScope.html">CrawlScope</a> scope =
<a name="272" href="#272">272</a>             getSettingsHandler().getOrder().getController().getScope();
<a name="273" href="#273">273</a>         scope.addSeedListener(<strong>this</strong>);
<a name="274" href="#274">274</a>         <strong>return</strong> scope.getSeedfile();
<a name="275" href="#275">275</a>     }
<a name="276" href="#276">276</a> 
<a name="277" href="#277">277</a>     <strong>public</strong> <strong>synchronized</strong> <strong>void</strong> addedSeed(<strong>final</strong> <a href="../../../../org/archive/crawler/datamodel/CandidateURI.html">CandidateURI</a> curi) {
<a name="278" href="#278">278</a>         <a href="../../../../org/archive/util/SurtPrefixSet.html">SurtPrefixSet</a> newSurtPrefixes = (SurtPrefixSet) surtPrefixes.clone();
<a name="279" href="#279">279</a>         newSurtPrefixes.add(prefixFrom(curi.toString()));
<a name="280" href="#280">280</a>         surtPrefixes = newSurtPrefixes;
<a name="281" href="#281">281</a>     }
<a name="282" href="#282">282</a>     
<a name="283" href="#283">283</a>     <strong>protected</strong> String prefixFrom(String uri) {
<a name="284" href="#284">284</a>     	<strong>return</strong> SurtPrefixSet.prefixFromPlain(uri);
<a name="285" href="#285">285</a>     }
<a name="286" href="#286">286</a> }
</pre>
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