mirror of
https://github.com/yacy/yacy_search_server.git
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b5ac29c9a5
given css class and extends a given vocabulary with a term consisting with the text content of the html class tag. Additionally, the term is included into the semantic facet of the document. This allows the creation of faceted search to documents without the pre-creation of vocabularies; instead, the vocabulary is created on-the-fly, possibly for use in other crawls. If any of the term scraping for a specific vocabulary is successful on a document, this vocabulary is excluded for auto-annotation on the page. To use this feature, do the following: - create a vocabulary on /Vocabulary_p.html (if not existent) - in /CrawlStartExpert.html you will now see the vocabularies as column in a table. The second column provides text fields where you can name the class of html entities where the literal of the corresponding vocabulary shall be scraped out - when doing a search, you will see the content of the scraped fields in a navigation facet for the given vocabulary
146 lines
4.5 KiB
Java
146 lines
4.5 KiB
Java
/**
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* mmParser
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* Copyright 2010 by Marc Nause, marc.nause@gmx.de, Braunschweig, Germany
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* First released 27.12.2010 at http://yacy.net
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*
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* $LastChangedDate$
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* $LastChangedRevision$
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* $LastChangedBy$
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program in the file lgpl21.txt
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* If not, see <http://www.gnu.org/licenses/>.
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*/
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package net.yacy.document.parser;
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import java.io.IOException;
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import java.io.InputStream;
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import java.util.ArrayList;
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import java.util.Date;
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import java.util.List;
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import javax.xml.parsers.ParserConfigurationException;
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import javax.xml.parsers.SAXParser;
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import javax.xml.parsers.SAXParserFactory;
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import net.yacy.cora.document.encoding.UTF8;
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import net.yacy.cora.document.id.AnchorURL;
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import net.yacy.document.AbstractParser;
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import net.yacy.document.Document;
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import net.yacy.document.Parser;
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import net.yacy.document.VocabularyScraper;
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import org.xml.sax.Attributes;
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import org.xml.sax.SAXException;
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import org.xml.sax.helpers.DefaultHandler;
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// this is a new implementation of this parser idiom using multiple documents as result set
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public class mmParser extends AbstractParser implements Parser {
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public mmParser() {
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super("FreeMind Parser");
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this.SUPPORTED_EXTENSIONS.add("mm");
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this.SUPPORTED_MIME_TYPES.add("application/freemind");
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this.SUPPORTED_MIME_TYPES.add("application/x-freemind");
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}
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private static final ThreadLocal<SAXParser> tlSax = new ThreadLocal<SAXParser>();
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private static SAXParser getParser() throws SAXException {
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SAXParser parser = tlSax.get();
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if (parser == null) {
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try {
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parser = SAXParserFactory.newInstance().newSAXParser();
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} catch (final ParserConfigurationException e) {
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throw new SAXException(e.getMessage(), e);
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}
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tlSax.set(parser);
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}
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return parser;
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}
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@Override
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public Document[] parse(final AnchorURL location, final String mimeType,
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final String charset, final VocabularyScraper scraper, final InputStream source)
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throws Parser.Failure, InterruptedException
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{
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final StringBuilder sb = new StringBuilder();
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String rootElementText = "";
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byte[] content = new byte[0];
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try {
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final SAXParser saxParser = getParser();
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final FreeMindHandler freeMindHandler = new FreeMindHandler();
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saxParser.parse(source, freeMindHandler);
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final List<String> nodeTextList = freeMindHandler.getNodeText();
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rootElementText = nodeTextList.isEmpty() ? "" : nodeTextList.get(0);
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for (final String nodeText : nodeTextList) {
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sb.append(nodeText);
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sb.append(". ");
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}
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content = UTF8.getBytes(sb.toString());
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} catch (final SAXException ex) {
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AbstractParser.log.warn(ex.getMessage());
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} catch (final IOException ex) {
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AbstractParser.log.warn(ex.getMessage());
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}
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return new Document[]{new Document(
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location,
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mimeType,
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"UTF-8",
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this,
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null,
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null,
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singleList(rootElementText),
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null,
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null,
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null,
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null,
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0.0f, 0.0f,
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content,
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null,
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null,
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null,
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false,
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new Date())};
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}
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private class FreeMindHandler extends DefaultHandler {
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private final List<String> nodeText = new ArrayList<String>();
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@Override
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public void startElement(final String uri, final String localName,
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final String qName, final Attributes attributes) {
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if (qName.equals("node")) {
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final String textValue = attributes.getValue("TEXT");
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if (textValue != null) {
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this.nodeText.add(textValue);
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}
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}
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}
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protected List<String> getNodeText() {
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return this.nodeText;
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}
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}
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}
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