crawlsettingssaxsource.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="397" href="#397">397</a>                 atts.addAttribute(nsu, XMLSettingsHandler.XML_ATTRIBUTE_NAME,
<a name="398" href="#398">398</a>                         XMLSettingsHandler.XML_ATTRIBUTE_NAME, nsu, attribute
<a name="399" href="#399">399</a>                                 .getName());
<a name="400" href="#400">400</a>                 <strong>if</strong> (value == <strong>null</strong>) {
<a name="401" href="#401">401</a>                     <strong>try</strong> {
<a name="402" href="#402">402</a>                         value = complexType.getAttribute(attribute.getName());
<a name="403" href="#403">403</a>                     } <strong>catch</strong> (Exception e) {
<a name="404" href="#404">404</a>                         <strong>throw</strong> <strong>new</strong> SAXException(
<a name="405" href="#405">405</a>                                 <span class="string">"Internal error in settings subsystem"</span>, e);
<a name="406" href="#406">406</a>                     }
<a name="407" href="#407">407</a>                 }
<a name="408" href="#408">408</a>                 <strong>if</strong> (value != <strong>null</strong>) {
<a name="409" href="#409">409</a>                     handler.ignorableWhitespace(indentArray, 0, indent
<a name="410" href="#410">410</a>                             + indentAmount);
<a name="411" href="#411">411</a>                     handler.startElement(nsu, elementName, elementName, atts);
<a name="412" href="#412">412</a>                     <strong>if</strong> (value instanceof ListType) {
<a name="413" href="#413">413</a>                         parseListData(value, indent + indentAmount);
<a name="414" href="#414">414</a>                         handler.ignorableWhitespace(indentArray, 0, indent
<a name="415" href="#415">415</a>                                 + indentAmount);
<a name="416" href="#416">416</a>                     } <strong>else</strong> {
<a name="417" href="#417">417</a>                         <strong>char</strong> valueArray[] = value.toString().toCharArray();
<a name="418" href="#418">418</a>                         handler.characters(valueArray, 0, valueArray.length);
<a name="419" href="#419">419</a>                     }
<a name="420" href="#420">420</a>                     handler.endElement(nsu, elementName, elementName);
<a name="421" href="#421">421</a>                 }
<a name="422" href="#422">422</a>             }
<a name="423" href="#423">423</a>         }
<a name="424" href="#424">424</a>     }
<a name="425" href="#425">425</a> 
<a name="426" href="#426">426</a>     <em>/**<em>* Create SAX events for the content of a {@link ListType}.</em></em>
<a name="427" href="#427">427</a> <em>     *</em>
<a name="428" href="#428">428</a> <em>     * @param value the ListType whose content we create SAX events for.</em>
<a name="429" href="#429">429</a> <em>     * @param indent the indentation amount for prettyprinting XML.</em>
<a name="430" href="#430">430</a> <em>     * @throws SAXException is thrown if an error occurs.</em>
<a name="431" href="#431">431</a> <em>     */</em>
<a name="432" href="#432">432</a>     <strong>private</strong> <strong>void</strong> parseListData(Object value, <strong>int</strong> indent) throws SAXException {
<a name="433" href="#433">433</a>         <a href="../../../../org/archive/crawler/settings/ListType.html">ListType</a> list = (ListType) value;
<a name="434" href="#434">434</a>         Iterator it = list.iterator();
<a name="435" href="#435">435</a>         <strong>while</strong> (it.hasNext()) {
<a name="436" href="#436">436</a>             Object element = it.next();
<a name="437" href="#437">437</a>             String elementName =
<a name="438" href="#438">438</a>                 SettingsHandler.getTypeName(element.getClass().getName());
<a name="439" href="#439">439</a>             writeSimpleElement(
<a name="440" href="#440">440</a>                 elementName,
<a name="441" href="#441">441</a>                 element.toString(),
<a name="442" href="#442">442</a>                 <strong>null</strong>,
<a name="443" href="#443">443</a>                 indent + indentAmount);
<a name="444" href="#444">444</a>         }
<a name="445" href="#445">445</a>     }
<a name="446" href="#446">446</a> 
<a name="447" href="#447">447</a>     <em>/**<em>* Resolve the XML element name of a {@link ComplexType}.</em></em>
<a name="448" href="#448">448</a> <em>     *</em>
<a name="449" href="#449">449</a> <em>     * @param complexType the object to investigate.</em>
<a name="450" href="#450">450</a> <em>     * @return the name of the XML element.</em>
<a name="451" href="#451">451</a> <em>     */</em>
<a name="452" href="#452">452</a>     <strong>private</strong> String resolveElementName(<a href="../../../../org/archive/crawler/settings/ComplexType.html">ComplexType</a> complexType) {
<a name="453" href="#453">453</a>         String elementName;
<a name="454" href="#454">454</a>         <strong>if</strong> (complexType instanceof ModuleType) {
<a name="455" href="#455">455</a>             <strong>if</strong> (complexType.getParent() == <strong>null</strong>) {
<a name="456" href="#456">456</a>                 <em class="comment">// Top level controller element</em>
<a name="457" href="#457">457</a>                 elementName = XMLSettingsHandler.XML_ELEMENT_CONTROLLER;
<a name="458" href="#458">458</a>             } <strong>else</strong> <strong>if</strong> (
<a name="459" href="#459">459</a>                 !orderFile
<a name="460" href="#460">460</a>                     &amp;&amp; complexType.globalSettings().getModule(
<a name="461" href="#461">461</a>                         complexType.getName())
<a name="462" href="#462">462</a>                         != <strong>null</strong>) {
<a name="463" href="#463">463</a>                 <em class="comment">// This is not the order file and we are referencing an object</em>
<a name="464" href="#464">464</a>                 elementName = XMLSettingsHandler.XML_ELEMENT_OBJECT;
<a name="465" href="#465">465</a>             } <strong>else</strong> {
<a name="466" href="#466">466</a>                 <em class="comment">// The object is not referenced before</em>
<a name="467" href="#467">467</a>                 elementName = XMLSettingsHandler.XML_ELEMENT_NEW_OBJECT;
<a name="468" href="#468">468</a>             }
<a name="469" href="#469">469</a>         } <strong>else</strong> {
<a name="470" href="#470">470</a>             <em class="comment">// It's a map</em>
<a name="471" href="#471">471</a>             elementName =
<a name="472" href="#472">472</a>                 SettingsHandler.getTypeName(complexType.getClass().getName());
<a name="473" href="#473">473</a>         }
<a name="474" href="#474">474</a>         <strong>return</strong> elementName;
<a name="475" href="#475">475</a>     }
<a name="476" href="#476">476</a> 
<a name="477" href="#477">477</a>     <em>/**<em>* Create SAX events for a simple element.</em></em>
<a name="478" href="#478">478</a> <em>     *</em>
<a name="479" href="#479">479</a> <em>     * Creates all the SAX events needed for prettyprinting an XML element</em>
<a name="480" href="#480">480</a> <em>     * with a simple value and possible attributes.</em>
<a name="481" href="#481">481</a> <em>     *</em>
<a name="482" href="#482">482</a> <em>     * @param elementName the name of the XML element.</em>
<a name="483" href="#483">483</a> <em>     * @param value the value to pu inside the XML element.</em>
<a name="484" href="#484">484</a> <em>     * @param atts the attributes for the XML element.</em>
<a name="485" href="#485">485</a> <em>     * @param indent the indentation amount for prettyprinting XML.</em>
<a name="486" href="#486">486</a> <em>     * @throws SAXException is thrown if an error occurs.</em>
<a name="487" href="#487">487</a> <em>     */</em>
<a name="488" href="#488">488</a>     <strong>private</strong> <strong>void</strong> writeSimpleElement(
<a name="489" href="#489">489</a>         String elementName,
<a name="490" href="#490">490</a>         String value,
<a name="491" href="#491">491</a>         Attributes atts,
<a name="492" href="#492">492</a>         <strong>int</strong> indent)
<a name="493" href="#493">493</a>         throws SAXException {
<a name="494" href="#494">494</a>         <strong>if</strong> (atts == <strong>null</strong>) {
<a name="495" href="#495">495</a>             atts = <strong>new</strong> AttributesImpl();
<a name="496" href="#496">496</a>         }
<a name="497" href="#497">497</a>         <em class="comment">// make sure that the value is never null</em>
<a name="498" href="#498">498</a>         value = value == <strong>null</strong> ? <span class="string">""</span> : value;
<a name="499" href="#499">499</a>         handler.ignorableWhitespace(indentArray, 0, indent);
<a name="500" href="#500">500</a>         handler.startElement(nsu, elementName, elementName, atts);
<a name="501" href="#501">501</a>         handler.characters(value.toCharArray(), 0, value.length());
<a name="502" href="#502">502</a>         handler.endElement(nsu, elementName, elementName);
<a name="503" href="#503">503</a>     }
<a name="504" href="#504">504</a> 
<a name="505" href="#505">505</a>     <em class="comment">/*<em class="comment"> (non-Javadoc)</em></em>
<a name="506" href="#506">506</a> <em class="comment">     * @see org.xml.sax.XMLReader#parse(java.lang.String)</em>
<a name="507" href="#507">507</a> <em class="comment">     */</em>
<a name="508" href="#508">508</a>     <strong>public</strong> <strong>void</strong> parse(String systemId) throws IOException, SAXException {
<a name="509" href="#509">509</a>         <em class="comment">// Do nothing. Just for conformance to the XMLReader API.</em>
<a name="510" href="#510">510</a>     }
<a name="511" href="#511">511</a> 
<a name="512" href="#512">512</a>     <em class="comment">/*<em class="comment"> (non-Javadoc)</em></em>
<a name="513" href="#513">513</a> <em class="comment">     * @see javax.xml.transform.sax.SAXSource#getXMLReader()</em>
<a name="514" href="#514">514</a> <em class="comment">     */</em>
<a name="515" href="#515">515</a>     <strong>public</strong> XMLReader getXMLReader() {
<a name="516" href="#516">516</a>         <strong>return</strong> <strong>this</strong>;
<a name="517" href="#517">517</a>     }
<a name="518" href="#518">518</a> 
<a name="519" href="#519">519</a>     <em class="comment">/*<em class="comment"> (non-Javadoc)</em></em>
<a name="520" href="#520">520</a> <em class="comment">     * @see javax.xml.transform.sax.SAXSource#getInputSource()</em>
<a name="521" href="#521">521</a> <em class="comment">     */</em>
<a name="522" href="#522">522</a>     <strong>public</strong> InputSource getInputSource() {
<a name="523" href="#523">523</a>         <strong>return</strong> <strong>new</strong> InputSource();
<a name="524" href="#524">524</a>     }
<a name="525" href="#525">525</a> }
</pre>
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