complextype.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="139" href="#139">139</a>         <strong>if</strong> (!object.initialized) {
<a name="140" href="#140">140</a>             Iterator it = object.definition.iterator();
<a name="141" href="#141">141</a>             <strong>while</strong> (it.hasNext()) {
<a name="142" href="#142">142</a>                 <a href="../../../../org/archive/crawler/settings/Type.html">Type</a> t = (Type) it.next();
<a name="143" href="#143">143</a>                 object.addElement(settings, t);
<a name="144" href="#144">144</a>             }
<a name="145" href="#145">145</a>             object.earlyInitialize(settings);
<a name="146" href="#146">146</a>         }
<a name="147" href="#147">147</a>         object.initialized = <strong>true</strong>;
<a name="148" href="#148">148</a> 
<a name="149" href="#149">149</a>         <strong>return</strong> object;
<a name="150" href="#150">150</a>     }
<a name="151" href="#151">151</a> 
<a name="152" href="#152">152</a>     <strong>private</strong> <a href="../../../../org/archive/crawler/settings/ComplexType.html">ComplexType</a> replaceComplexType(<a href="../../../../org/archive/crawler/settings/CrawlerSettings.html">CrawlerSettings</a> settings,
<a name="153" href="#153">153</a>             <a href="../../../../org/archive/crawler/settings/ComplexType.html">ComplexType</a> object) throws InvalidAttributeValueException,
<a name="154" href="#154">154</a>             AttributeNotFoundException {
<a name="155" href="#155">155</a>         <strong>if</strong> (<strong>this</strong>.settingsHandler == <strong>null</strong>) {
<a name="156" href="#156">156</a>             <strong>throw</strong> <strong>new</strong> IllegalStateException(
<a name="157" href="#157">157</a>                     <span class="string">"Can't add ComplexType to 'free' ComplexType"</span>);
<a name="158" href="#158">158</a>         }
<a name="159" href="#159">159</a>         String[] preservedFields = object.getPreservedFields();
<a name="160" href="#160">160</a> 
<a name="161" href="#161">161</a>         setupVariables(object);
<a name="162" href="#162">162</a> 
<a name="163" href="#163">163</a>         <a href="../../../../org/archive/crawler/settings/DataContainer.html">DataContainer</a> oldData = settings.getData(object);
<a name="164" href="#164">164</a>         settings.addComplexType(object);
<a name="165" href="#165">165</a>         <a href="../../../../org/archive/crawler/settings/DataContainer.html">DataContainer</a> newData = settings.getData(object);
<a name="166" href="#166">166</a> 
<a name="167" href="#167">167</a>         <strong>if</strong> (!object.initialized) {
<a name="168" href="#168">168</a>             Iterator it = object.definition.iterator();
<a name="169" href="#169">169</a>             <strong>while</strong> (it.hasNext()) {
<a name="170" href="#170">170</a>                 <a href="../../../../org/archive/crawler/settings/Type.html">Type</a> t = (Type) it.next();
<a name="171" href="#171">171</a> 
<a name="172" href="#172">172</a>                 <em class="comment">// Check if attribute should be copied from old object.</em>
<a name="173" href="#173">173</a>                 <strong>boolean</strong> found = false;
<a name="174" href="#174">174</a>                 <strong>if</strong> (preservedFields.length > 0) {
<a name="175" href="#175">175</a>                     <strong>for</strong> (<strong>int</strong> i = 0; i &lt; preservedFields.length; i++) {
<a name="176" href="#176">176</a>                         <strong>if</strong> (preservedFields[i].equals(t.getName())) {
<a name="177" href="#177">177</a>                             found = <strong>true</strong>;
<a name="178" href="#178">178</a>                             <strong>break</strong>;
<a name="179" href="#179">179</a>                         }
<a name="180" href="#180">180</a>                     }
<a name="181" href="#181">181</a>                 }
<a name="182" href="#182">182</a>                 <strong>if</strong> (found &amp;&amp; oldData.copyAttribute(t.getName(), newData)) {
<a name="183" href="#183">183</a>                     <strong>if</strong> (t instanceof ComplexType) {
<a name="184" href="#184">184</a>                         object.setupVariables((ComplexType) t);
<a name="185" href="#185">185</a>                     }
<a name="186" href="#186">186</a>                 } <strong>else</strong> {
<a name="187" href="#187">187</a>                     object.addElement(settings, t);
<a name="188" href="#188">188</a>                 }
<a name="189" href="#189">189</a>             }
<a name="190" href="#190">190</a>             object.earlyInitialize(settings);
<a name="191" href="#191">191</a>         }
<a name="192" href="#192">192</a>         object.initialized = <strong>true</strong>;
<a name="193" href="#193">193</a> 
<a name="194" href="#194">194</a>         <strong>return</strong> object;
<a name="195" href="#195">195</a>     }
<a name="196" href="#196">196</a> 
<a name="197" href="#197">197</a>     <em>/**<em>* Set a list of attribute names that the complex type should attempt to</em></em>
<a name="198" href="#198">198</a> <em>     * preserve if the module is exchanged with an other one.</em>
<a name="199" href="#199">199</a> <em>     *</em>
<a name="200" href="#200">200</a> <em>     * @param preservedFields array of attributenames to preserve.</em>
<a name="201" href="#201">201</a> <em>     */</em>
<a name="202" href="#202">202</a>     <strong>protected</strong> <strong>void</strong> setPreservedFields(String[] preservedFields) {
<a name="203" href="#203">203</a>         <strong>this</strong>.preservedFields = preservedFields;
<a name="204" href="#204">204</a>     }
<a name="205" href="#205">205</a> 
<a name="206" href="#206">206</a>     <em>/**<em>* Get a list of attribute names that the complex type should attempt to</em></em>
<a name="207" href="#207">207</a> <em>     * preserve if the module is exchanged with an other one.</em>
<a name="208" href="#208">208</a> <em>     *</em>
<a name="209" href="#209">209</a> <em>     * @return an array of attributenames to preserve.</em>
<a name="210" href="#210">210</a> <em>     */</em>
<a name="211" href="#211">211</a>     <strong>protected</strong> String[] getPreservedFields() {
<a name="212" href="#212">212</a>         <strong>return</strong> <strong>this</strong>.preservedFields;
<a name="213" href="#213">213</a>     }
<a name="214" href="#214">214</a> 
<a name="215" href="#215">215</a>     <em>/**<em>* Get the active data container for this ComplexType for a specific</em></em>
<a name="216" href="#216">216</a> <em>     * settings object.</em>
<a name="217" href="#217">217</a> <em>     *</em>
<a name="218" href="#218">218</a> <em>     * If no value has been overridden on the settings object for this</em>
<a name="219" href="#219">219</a> <em>     * ComplexType, then it traverses up until it find a DataContainer with</em>
<a name="220" href="#220">220</a> <em>     * values for this ComplexType.</em>
<a name="221" href="#221">221</a> <em>     *</em>
<a name="222" href="#222">222</a> <em>     * This method should probably not be called from user code. It is a helper</em>
<a name="223" href="#223">223</a> <em>     * method for the settings framework.</em>
<a name="224" href="#224">224</a> <em>     *</em>
<a name="225" href="#225">225</a> <em>     * @param context Context from which we get settings.</em>
<a name="226" href="#226">226</a> <em>     * @return the active DataContainer.</em>
<a name="227" href="#227">227</a> <em>     */</em>
<a name="228" href="#228">228</a>     <strong>protected</strong> <a href="../../../../org/archive/crawler/settings/DataContainer.html">DataContainer</a> getDataContainerRecursive(Context context) {
<a name="229" href="#229">229</a>         <strong>if</strong> (context.settings == <strong>null</strong>) {
<a name="230" href="#230">230</a>             <strong>return</strong> <strong>null</strong>;
<a name="231" href="#231">231</a>         }
<a name="232" href="#232">232</a>         <a href="../../../../org/archive/crawler/settings/DataContainer.html">DataContainer</a> data = context.settings.getData(<strong>this</strong>);
<a name="233" href="#233">233</a>         <strong>if</strong> (data == <strong>null</strong> &amp;&amp; context.settings.getParent(context.uri) != <strong>null</strong>) {
<a name="234" href="#234">234</a>             context.settings = context.settings.getParent(context.uri);
<a name="235" href="#235">235</a>             data = getDataContainerRecursive(context);
<a name="236" href="#236">236</a>         }
<a name="237" href="#237">237</a>         <strong>return</strong> data;
<a name="238" href="#238">238</a>     }
<a name="239" href="#239">239</a> 
<a name="240" href="#240">240</a>     <em>/**<em>* Get the active data container for this ComplexType for a specific</em></em>
<a name="241" href="#241">241</a> <em>     * settings object.</em>
<a name="242" href="#242">242</a> <em>     *</em>
<a name="243" href="#243">243</a> <em>     * If the key has not been overridden on the settings object for this</em>
<a name="244" href="#244">244</a> <em>     * ComplexType, then it traverses up until it find a DataContainer with</em>
<a name="245" href="#245">245</a> <em>     * the key for this ComplexType.</em>
<a name="246" href="#246">246</a> <em>     *</em>
<a name="247" href="#247">247</a> <em>     * This method should probably not be called from user code. It is a helper</em>
<a name="248" href="#248">248</a> <em>     * method for the settings framework.</em>
<a name="249" href="#249">249</a> <em>     *</em>
<a name="250" href="#250">250</a> <em>     * @param context the settings object for which the {@link DataContainer}</em>
<a name="251" href="#251">251</a> <em>     *                 is active.</em>
<a name="252" href="#252">252</a> <em>     * @param key the key to look for.</em>
<a name="253" href="#253">253</a> <em>     * @return the active DataContainer.</em>
<a name="254" href="#254">254</a> <em>     * @throws AttributeNotFoundException</em>
<a name="255" href="#255">255</a> <em>     */</em>
<a name="256" href="#256">256</a>     <strong>protected</strong> <a href="../../../../org/archive/crawler/settings/DataContainer.html">DataContainer</a> getDataContainerRecursive(Context context,
<a name="257" href="#257">257</a>             String key) throws AttributeNotFoundException {
<a name="258" href="#258">258</a>         Context c = <strong>new</strong> Context(context.settings, context.uri);
<a name="259" href="#259">259</a>         <a href="../../../../org/archive/crawler/settings/DataContainer.html">DataContainer</a> data = getDataContainerRecursive(c);
<a name="260" href="#260">260</a>         <strong>while</strong> (data != <strong>null</strong>) {
<a name="261" href="#261">261</a>             <strong>if</strong> (data.containsKey(key)) {
<a name="262" href="#262">262</a>                 <strong>return</strong> data;
<a name="263" href="#263">263</a>             }
<a name="264" href="#264">264</a>             c.settings = data.getSettings().getParent(c.uri);
<a name="265" href="#265">265</a>             data = getDataContainerRecursive(c);
<a name="266" href="#266">266</a>         }
<a name="267" href="#267">267</a>         <strong>throw</strong> <strong>new</strong> AttributeNotFoundException(key);
<a name="268" href="#268">268</a>     }
<a name="269" href="#269">269</a> 
<a name="270" href="#270">270</a>     <em>/**<em>* Sets up some variables for a new complex type.</em></em>
<a name="271" href="#271">271</a> <em>     *</em>
<a name="272" href="#272">272</a> <em>     * The complex type is set up to be an attribute of</em>
<a name="273" href="#273">273</a> <em>     * this complex type.</em>
<a name="274" href="#274">274</a> <em>     *</em>
<a name="275" href="#275">275</a> <em>     * @param object to be set up.</em>
<a name="276" href="#276">276</a> <em>     */</em>
<a name="277" href="#277">277</a>     <strong>private</strong> <strong>void</strong> setupVariables(<a href="../../../../org/archive/crawler/settings/ComplexType.html">ComplexType</a> object) {
<a name="278" href="#278">278</a>         object.parent = <strong>this</strong>;
<a name="279" href="#279">279</a>         object.settingsHandler = getSettingsHandler();
<a name="280" href="#280">280</a>         object.absoluteName =
<a name="281" href="#281">281</a>             (getAbsoluteName() + '/' + object.getName()).intern();
<a name="282" href="#282">282</a>     }
<a name="283" href="#283">283</a> 
<a name="284" href="#284">284</a>     <strong>public</strong> <a href="../../../../org/archive/crawler/settings/SettingsHandler.html">SettingsHandler</a> getSettingsHandler() {
<a name="285" href="#285">285</a>         <strong>return</strong> settingsHandler;