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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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*
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* '$Author: leinfelder $'
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* '$Date: 2012-10-16 13:50:03 -0700 (Tue, 16 Oct 2012) $'
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* '$Revision: 7403 $'
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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.PreparedStatement;
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import java.sql.ResultSet;
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import java.sql.Statement;
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import java.util.Date;
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import java.util.EmptyStackException;
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import java.util.Enumeration;
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import java.util.Hashtable;
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import java.util.Stack;
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import java.util.Vector;
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import edu.ucsb.nceas.metacat.database.DBConnection;
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import edu.ucsb.nceas.metacat.database.DBConnectionPool;
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import edu.ucsb.nceas.metacat.properties.PropertyService;
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import edu.ucsb.nceas.metacat.service.XMLSchema;
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import edu.ucsb.nceas.metacat.util.MetacatUtil;
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import edu.ucsb.nceas.utilities.triple.Triple;
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import edu.ucsb.nceas.utilities.triple.TripleCollection;
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import edu.ucsb.nceas.utilities.PropertyNotFoundException;
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import edu.ucsb.nceas.utilities.StringUtil;
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import org.apache.log4j.Logger;
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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 DBSAXHandler extends DefaultHandler implements LexicalHandler,
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DeclHandler
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{
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protected boolean atFirstElement;
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protected boolean processingDTD;
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protected String docname = null;
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protected String doctype;
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protected String catalogid = null;
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protected String systemid;
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private boolean stackCreated = false;
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protected Stack<DBSAXNode> nodeStack;
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protected Vector<DBSAXNode> nodeIndex;
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protected DBConnection connection = null;
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protected DocumentImpl currentDocument;
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protected Date createDate = null;
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protected Date updateDate = null;
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protected DBSAXNode rootNode;
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protected String action = null;
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protected String docid = null;
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protected String revision = null;
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protected String user = null;
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protected String[] groups = null;
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protected String pub = null;
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protected String encoding = null;
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// private boolean endDocument = false;
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protected int serverCode = 1;
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protected Hashtable<String,String> namespaces = new Hashtable<String,String>();
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protected boolean hitTextNode = false; // a flag to hit text node
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// a buffer to keep all text nodes for same element
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// it is for if element was split
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protected StringBuffer textBuffer = new StringBuffer();
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// protected Stack textBufferStack = new Stack();
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public static final int MAXDATACHARS = 4000;
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//protected static final int MAXDATACHARS = 50;
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// methods writeChildNodeToDB, setAttribute, setNamespace,
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// writeTextForDBSAXNode will increase endNodeId.
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protected long endNodeId = -1; // The end node id for a substree
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// DOCTITLE attr cleared from the db
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// private static final int MAXTITLELEN = 1000;
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private boolean isRevisionDoc = false;
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protected Vector<XMLSchema> schemaList = new Vector<XMLSchema>();
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//HandlerTriple stuff
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TripleCollection tripleList = new TripleCollection();
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Triple currentTriple = new Triple();
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boolean startParseTriple = false;
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boolean hasTriple = false;
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protected boolean writeAccessRules = true;
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protected boolean ignoreDenyFirst = true;
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public static final String ECOGRID = "ecogrid://";
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private Logger logMetacat = Logger.getLogger(DBSAXHandler.class);
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/**
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* Construct an instance of the handler class
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*
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* @param conn the JDBC connection to which information is written
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*/
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private DBSAXHandler(DBConnection conn, Date createDate, Date updateDate)
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{
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this.connection = conn;
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this.atFirstElement = true;
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this.processingDTD = false;
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this.createDate = createDate;
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this.updateDate = updateDate;
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// Create the stack for keeping track of node context
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// if it doesn't already exist
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if (!stackCreated) {
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nodeStack = new Stack<DBSAXNode>();
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nodeIndex = new Vector<DBSAXNode>();
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stackCreated = true;
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}
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}
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/**
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* Construct an instance of the handler class
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*
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* @param conn the JDBC connection to which information is written
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* @param action - "INSERT" or "UPDATE"
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* @param docid to be inserted or updated into JDBC connection
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* @param user the user connected to MetaCat servlet and owns the document
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* @param groups the groups to which user belongs
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* @param pub flag for public "read" access on document
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* @param serverCode the serverid from xml_replication on which this
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* document resides.
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*
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*/
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/* TODO excise this constructor because not used anywhere in project
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public DBSAXHandler(DBConnection conn, String action, String docid,
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String user, String[] groups, String pub, int serverCode)
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{
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this(conn);
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this.action = action;
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this.docid = docid;
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this.user = user;
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this.groups = groups;
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this.pub = pub;
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this.serverCode = serverCode;
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this.xmlIndex = new Thread(this);
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}
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*/
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/**
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* Construct an instance of the handler class In this constructor, user can
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* specify the version need to upadate
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*
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* @param conn the JDBC connection to which information is written
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* @param action - "INSERT" or "UPDATE"
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* @param docid to be inserted or updated into JDBC connection
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* @param revision, the user specified the revision need to be update
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* @param user the user connected to MetaCat servlet and owns the document
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* @param groups the groups to which user belongs
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* @param pub flag for public "read" access on document
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* @param serverCode the serverid from xml_replication on which this
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* document resides.
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*
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*/
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public DBSAXHandler(DBConnection conn, String action, String docid,
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String revision, String user, String[] groups, String pub,
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int serverCode, Date createDate, Date updateDate, boolean writeAccessRules)
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{
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this(conn, createDate, updateDate);
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this.action = action;
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this.docid = docid;
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this.revision = revision;
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this.user = user;
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this.groups = groups;
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this.pub = pub;
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this.serverCode = serverCode;
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this.writeAccessRules = writeAccessRules;
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}
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/** SAX Handler that receives notification of beginning of the document */
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public void startDocument() throws SAXException
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{
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logMetacat.debug("DBSaxHandler.startDocument - starting document");
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// Create the document node representation as root
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rootNode = new DBSAXNode(connection, this.docid);
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// Add the node to the stack, so that any text data can be
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// added as it is encountered
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nodeStack.push(rootNode);
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}
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/** SAX Handler that receives notification of end of the document */
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public void endDocument() throws SAXException {
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logMetacat.debug("DBSaxHandler.endDocument - ending document");
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// Starting new thread for writing XML Index.
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// It calls the run method of the thread.
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try {
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// if it is data package insert triple into relation table;
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if (doctype != null
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&& MetacatUtil.getOptionList(
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PropertyService.getProperty("xml.packagedoctype")).contains(
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doctype) && hasTriple && !isRevisionDoc) {
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// initial handler and write into relation db only for
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// xml-documents
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if (!isRevisionDoc) {
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RelationHandler handler = new RelationHandler(docid, doctype,
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connection, tripleList);
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}
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}
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} catch (Exception e) {
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logMetacat.error("DBSaxHandler.endDocument - Failed to write triples into relation table"
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+ e.getMessage());
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throw new SAXException("Failed to write triples into relation table "
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+ e.getMessage());
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}
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// If we get here, the document and schema parsed okay. If there are
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// any schemas in the schema list, they are new and need to be registered.
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for (XMLSchema xmlSchema : schemaList) {
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String externalFileUri = xmlSchema.getExternalFileUri();
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String fileNamespace = xmlSchema.getFileNamespace();
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SchemaLocationResolver resolver =
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new SchemaLocationResolver(fileNamespace, externalFileUri);
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resolver.resolveNameSpace();
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}
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}
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/** SAX Handler that is called at the start of Namespace */
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public void startPrefixMapping(String prefix, String uri)
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throws SAXException
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{
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logMetacat.debug("DBSaxHandler.startPrefixMapping - Starting namespace");
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namespaces.put(prefix, uri);
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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, String qName,
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Attributes atts) throws SAXException
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{
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// for element <eml:eml...> qname is "eml:eml", local name is "eml"
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// for element <acl....> both qname and local name is "eml"
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// uri is namespace
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logMetacat.debug("DBSaxHandler.startElement - Start ELEMENT(qName) " + qName);
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logMetacat.debug("DBSaxHandler.startElement - Start ELEMENT(localName) " + localName);
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logMetacat.debug("DBSaxHandler.startElement - Start ELEMENT(uri) " + uri);
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DBSAXNode parentNode = null;
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DBSAXNode currentNode = null;
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// Get a reference to the parent node for the id
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try {
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parentNode = (DBSAXNode) nodeStack.peek();
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} catch (EmptyStackException e) {
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parentNode = null;
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}
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// If hit a text node, we need write this text for current's parent
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// node This will happen if the element is mixed
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if (hitTextNode && parentNode != null) {
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// write the textbuffer into db for parent node.
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endNodeId = writeTextForDBSAXNode(endNodeId, textBuffer, parentNode);
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// rest hitTextNode
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hitTextNode = false;
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// reset textbuffer
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textBuffer = null;
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textBuffer = new StringBuffer();
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}
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// Document representation that points to the root document node
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if (atFirstElement) {
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atFirstElement = false;
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// If no DOCTYPE declaration: docname = root element
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// doctype = root element name or name space
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if (docname == null) {
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docname = localName;
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// if uri isn't null doctype = uri(namespace)
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// otherwise root element
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if (uri != null && !(uri.trim()).equals("")) {
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doctype = uri;
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} else {
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doctype = docname;
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}
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logMetacat.debug("DBSaxHandler.startElement - DOCNAME-a: " + docname);
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logMetacat.debug("DBSaxHandler.startElement - DOCTYPE-a: " + doctype);
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} else if (doctype == null) {
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// because docname is not null and it is declared in dtd
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// so could not be in schema, no namespace
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doctype = docname;
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logMetacat.debug("DBSaxHandler.startElement - DOCTYPE-b: " + doctype);
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}
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rootNode.writeNodename(docname);
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351
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try {
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// for validated XML Documents store a reference to XML DB
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// Catalog
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// Because this is select statement and it needn't to roll back
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// if
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// insert document action failed.
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// In order to decrease DBConnection usage count, we get a new
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// dbconnection from pool
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DBConnection dbConn = null;
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int serialNumber = -1;
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362
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if (systemid != null) {
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try {
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// Get dbconnection
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dbConn = DBConnectionPool
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.getDBConnection("DBSAXHandler.startElement");
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serialNumber = dbConn.getCheckOutSerialNumber();
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String sql = "SELECT catalog_id FROM xml_catalog "
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371
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+ "WHERE entry_type = 'DTD' "
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372
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+ "AND public_id = ?";
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373
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PreparedStatement pstmt = dbConn.prepareStatement(sql);
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pstmt.setString(1, doctype);
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ResultSet rs = pstmt.executeQuery();
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boolean hasRow = rs.next();
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if (hasRow) {
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379
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catalogid = rs.getString(1);
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380
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}
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pstmt.close();
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382
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}//try
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finally {
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// Return dbconnection
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DBConnectionPool.returnDBConnection(dbConn, serialNumber);
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386
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}//finally
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387
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}
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388
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389
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//create documentImpl object by the constructor which can
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390
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// specify
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391
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//the revision
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392
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393
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if (!isRevisionDoc)
|
394
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{
|
395
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currentDocument = new DocumentImpl(connection, rootNode
|
396
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.getNodeID(), docname, doctype, docid, revision,
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action, user, this.pub, catalogid, this.serverCode,
|
398
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createDate, updateDate);
|
399
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}
|
400
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} catch (Exception ane) {
|
401
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ane.printStackTrace(System.out);
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402
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ane.printStackTrace(System.err);
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403
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throw (new SAXException("Error in DBSaxHandler.startElement for action "
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404
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+ action + " : " + ane.getMessage(), ane));
|
405
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}
|
406
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}
|
407
|
|
408
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// Create the current node representation
|
409
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currentNode = new DBSAXNode(connection, qName, localName,
|
410
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parentNode, rootNode.getNodeID(), docid, doctype);
|
411
|
|
412
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// Add all of the namespaces
|
413
|
String prefix;
|
414
|
String nsuri;
|
415
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Enumeration<String> prefixes = namespaces.keys();
|
416
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while (prefixes.hasMoreElements()) {
|
417
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prefix = (String) prefixes.nextElement();
|
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nsuri = (String) namespaces.get(prefix);
|
419
|
currentNode.setNamespace(prefix, nsuri, docid);
|
420
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}
|
421
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namespaces = null;
|
422
|
namespaces = new Hashtable<String,String>();
|
423
|
|
424
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// Add all of the attributes
|
425
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for (int i = 0; i < atts.getLength(); i++) {
|
426
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String attributeName = atts.getQName(i);
|
427
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String attributeValue = atts.getValue(i);
|
428
|
endNodeId = currentNode.setAttribute(attributeName, attributeValue,
|
429
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docid);
|
430
|
|
431
|
// To handle name space and schema location if the attribute name
|
432
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// is xsi:schemaLocation. If the name space is in not in catalog
|
433
|
// table it will be registered.
|
434
|
if (attributeName != null
|
435
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&& attributeName
|
436
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.indexOf(MetaCatServlet.SCHEMALOCATIONKEYWORD) != -1) {
|
437
|
// These schemas will be registered in the end endDocument() method
|
438
|
// assuming parsing is successful.
|
439
|
// each namespace could have several schema locations. parsedUri will
|
440
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// hold a list of uri and files.
|
441
|
attributeValue = StringUtil.replaceTabsNewLines(attributeValue);
|
442
|
attributeValue = StringUtil.replaceDuplicateSpaces(attributeValue);
|
443
|
Vector<String> parsedUri = StringUtil.toVector(attributeValue, ' ');
|
444
|
for (int j = 0; j < parsedUri.size(); j = j + 2 ) {
|
445
|
if (j + 1 >= parsedUri.size()) {
|
446
|
throw new SAXException("Odd number of elements found when parsing schema location: " +
|
447
|
attributeValue + ". There should be an even number of uri/files in location.");
|
448
|
}
|
449
|
XMLSchema xmlSchema =
|
450
|
new XMLSchema(parsedUri.get(j), parsedUri.get(j + 1));
|
451
|
schemaList.add(xmlSchema);
|
452
|
}
|
453
|
}
|
454
|
}
|
455
|
|
456
|
// Add the node to the stack, so that any text data can be
|
457
|
// added as it is encountered
|
458
|
nodeStack.push(currentNode);
|
459
|
// Add the node to the vector used by thread for writing XML Index
|
460
|
nodeIndex.addElement(currentNode);
|
461
|
// start parsing triple
|
462
|
try {
|
463
|
if (doctype != null
|
464
|
&& MetacatUtil.getOptionList(
|
465
|
PropertyService.getProperty("xml.packagedoctype")).contains(doctype)
|
466
|
&& localName.equals("triple")) {
|
467
|
startParseTriple = true;
|
468
|
hasTriple = true;
|
469
|
currentTriple = new Triple();
|
470
|
}
|
471
|
} catch (PropertyNotFoundException pnfe) {
|
472
|
pnfe.printStackTrace(System.out);
|
473
|
pnfe.printStackTrace(System.err);
|
474
|
throw (new SAXException("Error in DBSaxHandler.startElement for action " + action +
|
475
|
" : " + pnfe.getMessage(), pnfe));
|
476
|
}
|
477
|
}
|
478
|
|
479
|
|
480
|
/** SAX Handler that is called for each XML text node */
|
481
|
public void characters(char[] cbuf, int start, int len) throws SAXException
|
482
|
{
|
483
|
logMetacat.debug("DBSaxHandler.characters - starting characters");
|
484
|
// buffer all text nodes for same element. This is for if text was split
|
485
|
// into different nodes
|
486
|
textBuffer.append(new String(cbuf, start, len));
|
487
|
// set hittextnode true
|
488
|
hitTextNode = true;
|
489
|
// if text buffer .size is greater than max, write it to db.
|
490
|
// so we can save memory
|
491
|
if (textBuffer.length() > MAXDATACHARS) {
|
492
|
logMetacat.debug("DBSaxHandler.characters - Write text into DB in charaters"
|
493
|
+ " when text buffer size is greater than maxmum number");
|
494
|
DBSAXNode currentNode = (DBSAXNode) nodeStack.peek();
|
495
|
endNodeId = writeTextForDBSAXNode(endNodeId, textBuffer,
|
496
|
currentNode);
|
497
|
textBuffer = null;
|
498
|
textBuffer = new StringBuffer();
|
499
|
}
|
500
|
}
|
501
|
|
502
|
/**
|
503
|
* SAX Handler that is called for each XML text node that is Ignorable
|
504
|
* white space
|
505
|
*/
|
506
|
public void ignorableWhitespace(char[] cbuf, int start, int len)
|
507
|
throws SAXException
|
508
|
{
|
509
|
// When validation is turned "on", white spaces are reported here
|
510
|
// When validation is turned "off" white spaces are not reported here,
|
511
|
// but through characters() callback
|
512
|
logMetacat.debug("DBSaxHandler.ignorableWhitespace - in ignorableWhitespace");
|
513
|
|
514
|
DBSAXNode currentNode = (DBSAXNode) nodeStack.peek();
|
515
|
|
516
|
// Write the content of the node to the database
|
517
|
endNodeId = currentNode.writeChildNodeToDB("TEXT", null, new String(cbuf, start, len),
|
518
|
docid);
|
519
|
}
|
520
|
|
521
|
/**
|
522
|
* SAX Handler called once for each processing instruction found: node that
|
523
|
* PI may occur before or after the root element.
|
524
|
*/
|
525
|
public void processingInstruction(String target, String data)
|
526
|
throws SAXException
|
527
|
{
|
528
|
logMetacat.debug("DBSaxHandler.processingInstruction - in processing instructions");
|
529
|
DBSAXNode currentNode = (DBSAXNode) nodeStack.peek();
|
530
|
endNodeId = currentNode.writeChildNodeToDB("PI", target, data, docid);
|
531
|
}
|
532
|
|
533
|
/** SAX Handler that is called at the end of each XML element */
|
534
|
public void endElement(String uri, String localName, String qName)
|
535
|
throws SAXException
|
536
|
{
|
537
|
logMetacat.debug("DBSaxHandler.endElement - End element " + qName);
|
538
|
|
539
|
// write buffered text nodes into db (so no splited)
|
540
|
DBSAXNode currentNode = (DBSAXNode) nodeStack.peek();
|
541
|
|
542
|
// If before the end element, the parser hit text nodes and store them
|
543
|
// into the buffer, write the buffer to data base. The reason we put
|
544
|
// write database here is for xerces some time split text node
|
545
|
if (hitTextNode) {
|
546
|
logMetacat.debug("DBSaxHandler.endElement - Write text into DB in End Element");
|
547
|
endNodeId = writeTextForDBSAXNode(endNodeId, textBuffer,
|
548
|
currentNode);
|
549
|
|
550
|
//if it is triple parsing process
|
551
|
if (startParseTriple) {
|
552
|
|
553
|
String content = textBuffer.toString().trim();
|
554
|
if (localName.equals("subject")) { //get the subject content
|
555
|
currentTriple.setSubject(content);
|
556
|
} else if (localName.equals("relationship")) { //get the
|
557
|
// relationship
|
558
|
// content
|
559
|
currentTriple.setRelationship(content);
|
560
|
} else if (localName.equals("object")) { //get the object
|
561
|
// content
|
562
|
currentTriple.setObject(content);
|
563
|
}
|
564
|
}
|
565
|
|
566
|
}//if
|
567
|
|
568
|
//set hitText false
|
569
|
hitTextNode = false;
|
570
|
// reset textbuff
|
571
|
textBuffer = null;
|
572
|
textBuffer = new StringBuffer();
|
573
|
|
574
|
// Get the node from the stack
|
575
|
currentNode = (DBSAXNode) nodeStack.pop();
|
576
|
//finishing parsing single triple
|
577
|
if (startParseTriple && localName.equals("triple")) {
|
578
|
// add trip to triple collection
|
579
|
tripleList.addTriple(currentTriple);
|
580
|
//rest variable
|
581
|
currentTriple = null;
|
582
|
startParseTriple = false;
|
583
|
}
|
584
|
}
|
585
|
|
586
|
//
|
587
|
// the next section implements the LexicalHandler interface
|
588
|
//
|
589
|
|
590
|
/** SAX Handler that receives notification of DOCTYPE. Sets the DTD */
|
591
|
public void startDTD(String name, String publicId, String systemId)
|
592
|
throws SAXException
|
593
|
{
|
594
|
docname = name;
|
595
|
doctype = publicId;
|
596
|
systemid = systemId;
|
597
|
|
598
|
processingDTD = true;
|
599
|
DBSAXNode currentNode = (DBSAXNode) nodeStack.peek();
|
600
|
//create a DTD node and write docname,publicid and system id into db
|
601
|
// we don't put the dtd node into node stack
|
602
|
DBSAXNode dtdNode = new DBSAXNode(connection, name, publicId, systemId,
|
603
|
currentNode, currentNode.getRootNodeID(), docid);
|
604
|
logMetacat.debug("DBSaxHandler.startDTD - Start DTD");
|
605
|
logMetacat.debug("DBSaxHandler.startDTD - Setting processingDTD to true");
|
606
|
logMetacat.debug("DBSaxHandler.startDTD - DOCNAME: " + docname);
|
607
|
logMetacat.debug("DBSaxHandler.startDTD - DOCTYPE: " + doctype);
|
608
|
logMetacat.debug("DBSaxHandler.startDTD - SYSID: " + systemid);
|
609
|
}
|
610
|
|
611
|
/**
|
612
|
* SAX Handler that receives notification of end of DTD
|
613
|
*/
|
614
|
public void endDTD() throws SAXException
|
615
|
{
|
616
|
|
617
|
processingDTD = false;
|
618
|
logMetacat.debug("DBSaxHandler.endDTD - Setting processingDTD to false");
|
619
|
logMetacat.debug("DBSaxHandler.endDTD - end DTD");
|
620
|
}
|
621
|
|
622
|
/**
|
623
|
* SAX Handler that receives notification of comments in the DTD
|
624
|
*/
|
625
|
public void comment(char[] ch, int start, int length) throws SAXException
|
626
|
{
|
627
|
logMetacat.debug("DBSaxHandler.comment - starting comment");
|
628
|
if (!processingDTD) {
|
629
|
DBSAXNode currentNode = (DBSAXNode) nodeStack.peek();
|
630
|
endNodeId = currentNode.writeChildNodeToDB("COMMENT", null,
|
631
|
new String(ch, start, length), docid);
|
632
|
}
|
633
|
}
|
634
|
|
635
|
/**
|
636
|
* SAX Handler that receives notification of the start of CDATA sections
|
637
|
*/
|
638
|
public void startCDATA() throws SAXException
|
639
|
{
|
640
|
logMetacat.debug("DBSaxHandler.startCDATA - starting CDATA");
|
641
|
}
|
642
|
|
643
|
/**
|
644
|
* SAX Handler that receives notification of the end of CDATA sections
|
645
|
*/
|
646
|
public void endCDATA() throws SAXException
|
647
|
{
|
648
|
logMetacat.debug("DBSaxHandler.endCDATA - end CDATA");
|
649
|
}
|
650
|
|
651
|
/**
|
652
|
* SAX Handler that receives notification of the start of entities
|
653
|
*/
|
654
|
public void startEntity(String name) throws SAXException
|
655
|
{
|
656
|
logMetacat.debug("DBSaxHandler.startEntity - starting entity: " + name);
|
657
|
//System.out.println("start ENTITY: " + name);
|
658
|
if (name.equals("[dtd]")) {
|
659
|
processingDTD = true;
|
660
|
}
|
661
|
}
|
662
|
|
663
|
/**
|
664
|
* SAX Handler that receives notification of the end of entities
|
665
|
*/
|
666
|
public void endEntity(String name) throws SAXException
|
667
|
{
|
668
|
logMetacat.debug("DBSaxHandler.endEntity - ending entity: " + name);
|
669
|
//System.out.println("end ENTITY: " + name);
|
670
|
if (name.equals("[dtd]")) {
|
671
|
processingDTD = false;
|
672
|
}
|
673
|
}
|
674
|
|
675
|
/**
|
676
|
* SAX Handler that receives notification of element declarations
|
677
|
*/
|
678
|
public void elementDecl(String name, String model)
|
679
|
throws org.xml.sax.SAXException
|
680
|
{
|
681
|
//System.out.println("ELEMENTDECL: " + name + " " + model);
|
682
|
logMetacat.debug("DBSaxHandler.elementDecl - element declaration: " + name + " " + model);
|
683
|
}
|
684
|
|
685
|
/**
|
686
|
* SAX Handler that receives notification of attribute declarations
|
687
|
*/
|
688
|
public void attributeDecl(String eName, String aName, String type,
|
689
|
String valueDefault, String value) throws org.xml.sax.SAXException
|
690
|
{
|
691
|
|
692
|
//System.out.println("ATTRIBUTEDECL: " + eName + " "
|
693
|
// + aName + " " + type + " " + valueDefault + " "
|
694
|
// + value);
|
695
|
logMetacat.debug("DBSaxHandler.attributeDecl - attribute declaration: " + eName + " " + aName + " "
|
696
|
+ type + " " + valueDefault + " " + value);
|
697
|
}
|
698
|
|
699
|
/**
|
700
|
* SAX Handler that receives notification of internal entity declarations
|
701
|
*/
|
702
|
public void internalEntityDecl(String name, String value)
|
703
|
throws org.xml.sax.SAXException
|
704
|
{
|
705
|
//System.out.println("INTERNENTITYDECL: " + name + " " + value);
|
706
|
logMetacat.debug("DBSaxHandler.internalEntityDecl - internal entity declaration: " + name + " " + value);
|
707
|
}
|
708
|
|
709
|
/**
|
710
|
* SAX Handler that receives notification of external entity declarations
|
711
|
*/
|
712
|
public void externalEntityDecl(String name, String publicId, String systemId)
|
713
|
throws org.xml.sax.SAXException
|
714
|
{
|
715
|
//System.out.println("EXTERNENTITYDECL: " + name + " " + publicId
|
716
|
// + " " + systemId);
|
717
|
logMetacat.debug("DBSaxHandler.externalEntityDecl - external entity declaration: " + name + " " + publicId
|
718
|
+ " " + systemId);
|
719
|
// it processes other external entity, not the DTD;
|
720
|
// it doesn't signal for the DTD here
|
721
|
processingDTD = false;
|
722
|
}
|
723
|
|
724
|
//
|
725
|
// the next section implements the ErrorHandler interface
|
726
|
//
|
727
|
|
728
|
/**
|
729
|
* SAX Handler that receives notification of fatal parsing errors
|
730
|
*/
|
731
|
public void fatalError(SAXParseException exception) throws SAXException
|
732
|
{
|
733
|
logMetacat.fatal("DBSaxHandler.fatalError - " + exception.getMessage());
|
734
|
throw (new SAXException("Fatal processing error.", exception));
|
735
|
}
|
736
|
|
737
|
/**
|
738
|
* SAX Handler that receives notification of recoverable parsing errors
|
739
|
*/
|
740
|
public void error(SAXParseException exception) throws SAXException
|
741
|
{
|
742
|
logMetacat.error("DBSaxHandler.error - " + exception.getMessage());
|
743
|
throw (new SAXException(exception.getMessage(), exception));
|
744
|
}
|
745
|
|
746
|
/**
|
747
|
* SAX Handler that receives notification of warnings
|
748
|
*/
|
749
|
public void warning(SAXParseException exception) throws SAXException
|
750
|
{
|
751
|
logMetacat.warn("DBSaxHandler.warning - " + exception.getMessage());
|
752
|
throw (new SAXException(exception.getMessage(), exception));
|
753
|
}
|
754
|
|
755
|
//
|
756
|
// Helper, getter and setter methods
|
757
|
//
|
758
|
|
759
|
/**
|
760
|
* get the document name
|
761
|
*/
|
762
|
public String getDocname()
|
763
|
{
|
764
|
return docname;
|
765
|
}
|
766
|
|
767
|
/**
|
768
|
* get the document processing state
|
769
|
*/
|
770
|
public boolean processingDTD()
|
771
|
{
|
772
|
return processingDTD;
|
773
|
}
|
774
|
|
775
|
|
776
|
/**
|
777
|
* get the the is revision doc
|
778
|
* @return
|
779
|
*/
|
780
|
public boolean getIsRevisionDoc()
|
781
|
{
|
782
|
return isRevisionDoc;
|
783
|
}
|
784
|
|
785
|
/**
|
786
|
* Set the the handler is for revisionDoc
|
787
|
* @param isRevisionDoc
|
788
|
*/
|
789
|
public void setIsRevisionDoc(boolean isRevisionDoc)
|
790
|
{
|
791
|
this.isRevisionDoc = isRevisionDoc;
|
792
|
}
|
793
|
|
794
|
public String getEncoding() {
|
795
|
return encoding;
|
796
|
}
|
797
|
|
798
|
public void setEncoding(String encoding) {
|
799
|
this.encoding = encoding;
|
800
|
}
|
801
|
|
802
|
/* Method to write a text buffer for DBSAXNode */
|
803
|
protected long writeTextForDBSAXNode(long previousEndNodeId,
|
804
|
StringBuffer strBuffer, DBSAXNode node) throws SAXException
|
805
|
{
|
806
|
long nodeId = previousEndNodeId;
|
807
|
// Check parameter
|
808
|
if (strBuffer == null || node == null) { return nodeId; }
|
809
|
boolean moredata = true;
|
810
|
|
811
|
String normalizedData = strBuffer.toString();
|
812
|
logMetacat.debug("DBSAXHandler.writeTextForDBSAXNode - Before normalize in write process: " + normalizedData);
|
813
|
String afterNormalize = MetacatUtil.normalize(normalizedData);
|
814
|
logMetacat.debug("DBSAXHandler.writeTextForDBSAXNode - After normalize in write process: " + afterNormalize);
|
815
|
strBuffer = new StringBuffer(afterNormalize);;
|
816
|
|
817
|
int bufferSize = strBuffer.length();
|
818
|
int start = 0;
|
819
|
|
820
|
// if there are some cotent in buffer, write it
|
821
|
if (bufferSize > 0) {
|
822
|
logMetacat.debug("DBSAXHandler.writeTextForDBSAXNode - Write text into DB");
|
823
|
|
824
|
// Write the content of the node to the database
|
825
|
nodeId = node.writeChildNodeToDB("TEXT", null, new String(strBuffer), docid);
|
826
|
}//if
|
827
|
return nodeId;
|
828
|
}
|
829
|
|
830
|
public long getRootNodeId()
|
831
|
{
|
832
|
return rootNode.getNodeID();
|
833
|
}
|
834
|
|
835
|
public String getDocumentType()
|
836
|
{
|
837
|
return doctype;
|
838
|
}
|
839
|
|
840
|
public String getDocumentName()
|
841
|
{
|
842
|
return docname;
|
843
|
}
|
844
|
|
845
|
public String getCatalogId()
|
846
|
{
|
847
|
return catalogid;
|
848
|
}
|
849
|
}
|