Revision 1508
Added by Jing Tao over 21 years ago
src/edu/ucsb/nceas/metacat/AddMissedSubTreeSAXHandler.java | ||
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/** |
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* '$RCSfile$' |
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* Purpose: A Class that handles the SAX XML events as they |
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* are generated from XML documents |
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* Copyright: 2000 Regents of the University of California and the |
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* National Center for Ecological Analysis and Synthesis |
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* Authors: Matt Jones, Jivka Bojilova |
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* Release: @release@ |
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* |
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* '$Author$' |
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* '$Date$' |
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* '$Revision$' |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
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* |
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* This program 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 |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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*/ |
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package edu.ucsb.nceas.metacat; |
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import java.sql.*; |
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import java.io.File; |
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import java.io.FileWriter; |
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import java.io.StringReader; |
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import java.util.Stack; |
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import java.util.Vector; |
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import java.util.Hashtable; |
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import java.util.Enumeration; |
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import java.util.EmptyStackException; |
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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.SAXParseException; |
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import org.xml.sax.ext.DeclHandler; |
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import org.xml.sax.ext.LexicalHandler; |
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import org.xml.sax.helpers.DefaultHandler; |
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/** |
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* A database aware Class implementing callback bethods for the SAX parser to |
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* call when processing the XML stream and generating events |
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*/ |
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public class AddMissedSubTreeSAXHandler extends DefaultHandler |
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{ |
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String docId; |
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Hashtable unReadableSubTreeHash; |
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Vector unReadableSubTreeList = new Vector(); |
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// Constant |
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private static final String DESCRIBES = "describes"; |
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private static final String ADDITIONALMETADATA = "additionalMetadata"; |
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private static final String ORDER = "order"; |
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private static final String ID ="id"; |
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private static final String REFERENCES = "references"; |
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public static final String INLINE = "inline"; |
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/** Construct an instance of the handler class |
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* In this constructor, user can specify the version need to upadate |
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* |
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* @param myDocid the docid for these subtree |
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* @param myUnReadableTree the tree couldn't be read |
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*/ |
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public AddMissedSubTreeSAXHandler(Hashtable myUnReadableTree) |
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throws SAXException |
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{ |
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unReadableSubTreeHash = myUnReadableTree; |
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getUnReadableSubTreeList(); |
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} |
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/* Get the unreadable tree list (every tree has the noderecorder stack)*/ |
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private void getUnReadableSubTreeList() throws SAXException |
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{ |
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Enumeration en = unReadableSubTreeHash.elements(); |
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try |
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{ |
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// go though the unreadable subtree list |
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while (en.hasMoreElements()) |
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{ |
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// Get a subtree without node record list |
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SubTree treeWithoutStack = (SubTree)en.nextElement(); |
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String subTreeId = treeWithoutStack.getSubTreeId(); |
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long startNodeId = treeWithoutStack.getStartNodeId(); |
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long endNodeId = treeWithoutStack.getEndNodeId(); |
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// Get a subtree has the nodelist |
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SubTree tree = new SubTree(docId, subTreeId, |
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startNodeId, endNodeId); |
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// add this tree to the vector |
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unReadableSubTreeList.add(tree); |
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}//while |
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}//try |
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catch (Exception e) |
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{ |
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throw new SAXException(e.getMessage()); |
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} |
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} |
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/** SAX Handler that is called at the start of each XML element */ |
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public void startElement(String uri, String localName, |
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String qName, Attributes atts) |
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throws SAXException |
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{ |
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} |
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/** SAX Handler that is called at the end of each XML element */ |
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public void endElement(String uri, String localName, |
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String qName) throws SAXException |
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{ |
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MetaCatUtil.debugMessage("End ELEMENT " + qName, 50); |
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} |
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} |
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Also available in: Unified diff
Add a class to handle append a unreadable subtree to document. (Not finished yet)