maptype.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="126" href="#126">126</a> <em>     * @param settings the settings object for which this method has effect.</em>
<a name="127" href="#127">127</a> <em>     * @param name name of attribute to move.</em>
<a name="128" href="#128">128</a> <em>     * @return true if attribute was moved, false if attribute was already</em>
<a name="129" href="#129">129</a> <em>     *              at the top.</em>
<a name="130" href="#130">130</a> <em>     * @throws AttributeNotFoundException is thrown if there is no attribute</em>
<a name="131" href="#131">131</a> <em>     *         with the submitted name.</em>
<a name="132" href="#132">132</a> <em>     */</em>
<a name="133" href="#133">133</a>     <strong>public</strong> <strong>boolean</strong> moveElementUp(<a href="../../../../org/archive/crawler/settings/CrawlerSettings.html">CrawlerSettings</a> settings, String name)
<a name="134" href="#134">134</a>       throws AttributeNotFoundException {
<a name="135" href="#135">135</a>         settings = settings == <strong>null</strong> ? globalSettings() : settings;
<a name="136" href="#136">136</a>         <strong>return</strong> settings.getData(<strong>this</strong>).moveElementUp(name);
<a name="137" href="#137">137</a>     }
<a name="138" href="#138">138</a> 
<a name="139" href="#139">139</a>     <em>/**<em>* Move an attribute down one place in the list.</em></em>
<a name="140" href="#140">140</a> <em>     *</em>
<a name="141" href="#141">141</a> <em>     * @param settings the settings object for which this method has effect.</em>
<a name="142" href="#142">142</a> <em>     * @param name name of attribute to move.</em>
<a name="143" href="#143">143</a> <em>     * @return true if attribute was moved, false if attribute was already</em>
<a name="144" href="#144">144</a> <em>     *              at bottom.</em>
<a name="145" href="#145">145</a> <em>     * @throws AttributeNotFoundException is thrown if there is no attribute</em>
<a name="146" href="#146">146</a> <em>     *         with the submitted name.</em>
<a name="147" href="#147">147</a> <em>     */</em>
<a name="148" href="#148">148</a>     <strong>public</strong> <strong>boolean</strong> moveElementDown(<a href="../../../../org/archive/crawler/settings/CrawlerSettings.html">CrawlerSettings</a> settings, String name)
<a name="149" href="#149">149</a>       throws AttributeNotFoundException {
<a name="150" href="#150">150</a>         settings = settings == <strong>null</strong> ? globalSettings() : settings;
<a name="151" href="#151">151</a>         <strong>return</strong> settings.getData(<strong>this</strong>).moveElementDown(name);
<a name="152" href="#152">152</a>     }
<a name="153" href="#153">153</a> 
<a name="154" href="#154">154</a>     <em>/**<em>* Returns true if this map is empty.</em></em>
<a name="155" href="#155">155</a> <em>     *</em>
<a name="156" href="#156">156</a> <em>     * @param context the settings object for which this set of elements</em>
<a name="157" href="#157">157</a> <em>     * are valid.</em>
<a name="158" href="#158">158</a> <em>     * @return true if this map is empty.</em>
<a name="159" href="#159">159</a> <em>     */</em>
<a name="160" href="#160">160</a>     <strong>public</strong> <strong>boolean</strong> isEmpty(Object context) {
<a name="161" href="#161">161</a>         Context ctxt = getSettingsFromObject(context);
<a name="162" href="#162">162</a> 
<a name="163" href="#163">163</a>         <a href="../../../../org/archive/crawler/settings/DataContainer.html">DataContainer</a> data = getDataContainerRecursive(ctxt);
<a name="164" href="#164">164</a>         <strong>while</strong> (data != <strong>null</strong>) {
<a name="165" href="#165">165</a>             <strong>if</strong> (data.hasAttributes()) {
<a name="166" href="#166">166</a>                 <strong>return</strong> false;
<a name="167" href="#167">167</a>             }
<a name="168" href="#168">168</a>             ctxt.settings = data.getSettings().getParent();
<a name="169" href="#169">169</a>             data = getDataContainerRecursive(ctxt);
<a name="170" href="#170">170</a>         }
<a name="171" href="#171">171</a>         <strong>return</strong> <strong>true</strong>;
<a name="172" href="#172">172</a>     }
<a name="173" href="#173">173</a> 
<a name="174" href="#174">174</a>     <em>/**<em>* Get the number of elements in this map.</em></em>
<a name="175" href="#175">175</a> <em>     *</em>
<a name="176" href="#176">176</a> <em>     * @param context the settings object for which this set of elements</em>
<a name="177" href="#177">177</a> <em>     *                 are valid.</em>
<a name="178" href="#178">178</a> <em>     * @return the number of elements in this map.</em>
<a name="179" href="#179">179</a> <em>     */</em>
<a name="180" href="#180">180</a>     <strong>public</strong> <strong>int</strong> size(Object context) {
<a name="181" href="#181">181</a>         Context ctxt = getSettingsFromObject(context);
<a name="182" href="#182">182</a> 
<a name="183" href="#183">183</a>         <strong>int</strong> size = 0;
<a name="184" href="#184">184</a>         <a href="../../../../org/archive/crawler/settings/DataContainer.html">DataContainer</a> data = getDataContainerRecursive(ctxt);
<a name="185" href="#185">185</a>         <strong>while</strong> (data != <strong>null</strong>) {
<a name="186" href="#186">186</a>             size += data.size();
<a name="187" href="#187">187</a>             ctxt.settings = data.getSettings().getParent();
<a name="188" href="#188">188</a>             data = getDataContainerRecursive(ctxt);
<a name="189" href="#189">189</a>         }
<a name="190" href="#190">190</a>         <strong>return</strong> size;
<a name="191" href="#191">191</a>     }
<a name="192" href="#192">192</a> 
<a name="193" href="#193">193</a>     <em>/**<em>*</em></em>
<a name="194" href="#194">194</a> <em>     * Get the content type definition for attributes of this map.</em>
<a name="195" href="#195">195</a> <em>     *</em>
<a name="196" href="#196">196</a> <em>     * @param attributeName since all attributes of a map are of the same type,</em>
<a name="197" href="#197">197</a> <em>     * this value is not used.</em>
<a name="198" href="#198">198</a> <em>     * @return the content type definition for attributes of this map.</em>
<a name="199" href="#199">199</a> <em>     */</em>
<a name="200" href="#200">200</a>     <a href="../../../../org/archive/crawler/settings/Type.html">Type</a> getDefinition(String attributeName) {
<a name="201" href="#201">201</a>         <strong>return</strong> definition;
<a name="202" href="#202">202</a>     }
<a name="203" href="#203">203</a> 
<a name="204" href="#204">204</a>     <em>/**<em>*</em></em>
<a name="205" href="#205">205</a> <em>     * Get the content type allowed for this map.</em>
<a name="206" href="#206">206</a> <em>     *</em>
<a name="207" href="#207">207</a> <em>     * @return the content type allowed for this map.</em>
<a name="208" href="#208">208</a> <em>     */</em>
<a name="209" href="#209">209</a>     <strong>public</strong> Class getContentType() {
<a name="210" href="#210">210</a>         <strong>return</strong> <strong>this</strong>.definition.getLegalValueType();
<a name="211" href="#211">211</a>     }
<a name="212" href="#212">212</a> 
<a name="213" href="#213">213</a>     FailedCheck checkValue(<a href="../../../../org/archive/crawler/settings/CrawlerSettings.html">CrawlerSettings</a> settings, String attributeName,
<a name="214" href="#214">214</a>             <a href="../../../../org/archive/crawler/settings/Type.html">Type</a> definition, Object value) {
<a name="215" href="#215">215</a>         FailedCheck res = <strong>super</strong>.checkValue(settings, attributeName, definition,
<a name="216" href="#216">216</a>                 value);
<a name="217" href="#217">217</a> 
<a name="218" href="#218">218</a>         definition = <strong>super</strong>.getDefinition(attributeName);
<a name="219" href="#219">219</a> 
<a name="220" href="#220">220</a>         <em class="comment">// Check if value fulfills any constraints</em>
<a name="221" href="#221">221</a>         List constraints = definition != <strong>null</strong> ? definition.getConstraints()
<a name="222" href="#222">222</a>                 : <strong>null</strong>;
<a name="223" href="#223">223</a>         <strong>if</strong> (constraints != <strong>null</strong>) {
<a name="224" href="#224">224</a>             FailedCheck ac = <strong>null</strong>;
<a name="225" href="#225">225</a>             <strong>for</strong> (Iterator it = constraints.iterator(); it.hasNext()
<a name="226" href="#226">226</a>                     &amp;&amp; ac == <strong>null</strong>;) {
<a name="227" href="#227">227</a>                 ac = ((Constraint) it.next()).check(settings, <strong>this</strong>, definition,
<a name="228" href="#228">228</a>                         value);
<a name="229" href="#229">229</a>                 <strong>if</strong> (res == <strong>null</strong>
<a name="230" href="#230">230</a>                         || ac.getLevel().intValue() >= res.getLevel()
<a name="231" href="#231">231</a>                                 .intValue()) {
<a name="232" href="#232">232</a>                     res = ac;
<a name="233" href="#233">233</a>                 }
<a name="234" href="#234">234</a>             }
<a name="235" href="#235">235</a>         }
<a name="236" href="#236">236</a> 
<a name="237" href="#237">237</a>         <strong>return</strong> res;
<a name="238" href="#238">238</a>     }
<a name="239" href="#239">239</a> 
<a name="240" href="#240">240</a>     <em class="comment">/*<em class="comment"> (non-Javadoc)</em></em>
<a name="241" href="#241">241</a> <em class="comment">     * @see org.archive.crawler.settings.Type#addConstraint(org.archive.crawler.settings.Constraint)</em>
<a name="242" href="#242">242</a> <em class="comment">     */</em>
<a name="243" href="#243">243</a>     <strong>public</strong> <strong>void</strong> addConstraint(<a href="../../../../org/archive/crawler/settings/Constraint.html">Constraint</a> constraint) {
<a name="244" href="#244">244</a>         definition.addConstraint(constraint);
<a name="245" href="#245">245</a>     }
<a name="246" href="#246">246</a> 
<a name="247" href="#247">247</a>     <em class="comment">/*<em class="comment"> (non-Javadoc)</em></em>
<a name="248" href="#248">248</a> <em class="comment">     * @see org.archive.crawler.settings.Type#getConstraints()</em>
<a name="249" href="#249">249</a> <em class="comment">     */</em>
<a name="250" href="#250">250</a>     <strong>public</strong> List getConstraints() {
<a name="251" href="#251">251</a>         <strong>return</strong> definition.getConstraints();
<a name="252" href="#252">252</a>     }
<a name="253" href="#253">253</a> }
</pre>
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