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/**
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* '$RCSfile$'
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* Purpose: A class that handles xml messages passed by the replication handler
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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: Chad Berkley
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* Release: @release@
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*
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* '$Author: berkley $'
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* '$Date: 2000-11-22 14:55:19 -0800 (Wed, 22 Nov 2000) $'
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* '$Revision: 561 $'
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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.util.Stack;
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import java.util.Vector;
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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 Class implementing callback bethods for the SAX parser to
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* call when processing the XML messages from the replication handler
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*/
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public class ReplMessageHandler extends DefaultHandler
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{
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private Vector updates = new Vector();
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private Vector indivUpdate = new Vector();
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private Vector indivDelete = new Vector();
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private Vector deletes = new Vector();
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private String server;
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private boolean update = false;
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private boolean delete = false;
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String currentTag = new String();
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public ReplMessageHandler()
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{
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}
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/**
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* This method starts a new vector for each updatedDocument tag.
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*/
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public void startElement(String uri, String localName, String qName,
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Attributes attributes) throws SAXException
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{
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currentTag = localName;
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if(localName.equals("updatedDocument"))
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{
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indivUpdate = new Vector();
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update = true;
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}
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else if(localName.equals("deletedDocument"))
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{
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indivDelete = new Vector();
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delete = true;
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}
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}
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/**
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* This method write the indivUpdate to updates when it finds the end of
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*/
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public void endElement(String uri, String localName, String qName)
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throws SAXException
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{
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if(localName.equals("updatedDocument"))
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{
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updates.add(new Vector(indivUpdate));
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update = false;
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}
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else if(localName.equals("deletedDocument"))
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{
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deletes.add(new Vector(indivDelete));
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delete = false;
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}
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}
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/**
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* Take the data out of the docid and date_updated fields
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*/
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public void characters(char[] ch, int start, int length) throws SAXException
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{
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if(currentTag.equals("docid") && update)
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{
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indivUpdate.add(new String(ch, start, length));
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}
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else if(currentTag.equals("docid") && delete)
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{
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indivDelete.add(new String(ch, start, length));
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}
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if(currentTag.equals("date_updated") && update)
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{
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indivUpdate.add(new String(ch, start, length));
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indivUpdate.add(server);
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}
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else if(currentTag.equals("date_updated") && delete)
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{
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indivDelete.add(new String(ch, start, length));
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indivDelete.add(server);
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}
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if(currentTag.equals("server"))
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{
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server = new String(ch, start, length);
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}
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}
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public Vector getUpdatesVect()
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{
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return updates;
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}
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public Vector getDeletesVect()
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{
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return deletes;
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}
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}
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