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/**
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* Name: DBWriter.java
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* Purpose: A Class that reads in an XML text document and
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* write its contents to a database connection
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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
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*
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* Version: '$Id$'
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*/
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//package edu.ucsb.nceas.dbwriter;
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.IOException;
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import java.io.InputStream;
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import java.net.URL;
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import java.util.Properties;
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import java.sql.*;
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import org.xml.sax.ErrorHandler;
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import org.xml.sax.InputSource;
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import org.xml.sax.SAXException;
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import org.xml.sax.SAXParseException;
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import org.w3c.dom.Element;
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import org.w3c.dom.Node;
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import org.w3c.dom.NodeList;
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import com.sun.xml.tree.XmlDocument;
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import com.sun.xml.tree.XmlDocumentBuilder;
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import com.sun.xml.tree.SimpleElementFactory;
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import com.sun.xml.parser.Resolver;
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import com.sun.xml.parser.ValidatingParser;
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public class DBWriter
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{
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private XmlDocument doc;
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private Connection conn = null;
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// Constructer to init the class
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public DBWriter(String argv[])
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throws SAXException, SQLException, IOException, ClassNotFoundException {
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// Open a connection to the database
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conn = openDBConnection(
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"oracle.jdbc.driver.OracleDriver",
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"jdbc:oracle:thin:@localhost:test",
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argv[2], argv[3]);
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//
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// Load the document, using the appropriate custom
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// DOM elements.
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//
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XmlDocument doc = createDocument (
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Resolver.createInputSource (new File (argv [1])),
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new FileInputStream (argv [0]),
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new ErrorPrinter ()
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);
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DBElement root;
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root = (DBElement)doc.getDocumentElement();
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root.normalize();
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root.writeXmlToDB(conn, 0);
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}
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public static void main (String argv [])
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{
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try {
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if (argv.length != 4) {
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System.err.println ("usage: java DBWriter "
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+ "DBElement.props somefile.xml username password");
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System.exit (1);
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}
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new DBWriter(argv);
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} catch (Throwable t) {
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t.printStackTrace (System.out);
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}
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}
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static private XmlDocument createDocument (
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InputSource input,
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InputStream propsStream,
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ErrorHandler errorHandler
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) throws SAXException, IOException
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{
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try {
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XmlDocumentBuilder builder = new XmlDocumentBuilder ();
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ValidatingParser parser = new ValidatingParser ();
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//
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// Configure the builder to create the right elements.
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//
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{
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Properties props;
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SimpleElementFactory factory;
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props = new Properties ();
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props.load (propsStream);
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factory = new SimpleElementFactory ();
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factory.addMapping (props, DBWriter.class.getClassLoader ());
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builder.setElementFactory (factory);
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}
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//
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// Configure the parser
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//
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parser.setErrorHandler (errorHandler);
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parser.setEntityResolver (new Resolver ());
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parser.setDocumentHandler (builder);
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parser.parse (input);
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// Look at how the different versions print themselvs...
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if (false) {
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builder.getDocument ().write (System.out);
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System.exit (0);
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}
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return builder.getDocument ();
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} catch (SAXParseException e) {
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// already reported
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throw e;
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} catch (SAXException e) {
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e.printStackTrace (System.out);
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throw e;
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} catch (IOException e) {
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e.printStackTrace (System.out);
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throw e;
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}
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}
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private Connection openDBConnection(String dbDriver, String connection,
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String user, String password)
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throws SQLException, ClassNotFoundException {
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// Load the Oracle JDBC driver
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Class.forName (dbDriver);
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// Connect to the database
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// You can put a database name after the @ sign in the connection URL.
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Connection conn = DriverManager.getConnection(
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connection, user, password);
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return conn;
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}
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static class ErrorPrinter implements ErrorHandler
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{
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private void message (String level, SAXParseException e)
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{
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System.out.print ("** ");
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System.out.println (level);
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System.out.print (" URI = ");
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System.out.print (e.getSystemId ());
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System.out.print (" Line = ");
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System.out.println (e.getLineNumber ());
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System.out.print (" Message = ");
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System.out.println (e.getMessage ());
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/*
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if (e.getException () != null)
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e.getException ().printStackTrace (System.out);
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else
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e.printStackTrace (System.out);
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*/
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}
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public void error (SAXParseException e)
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{
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// normally a validity error
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message ("Error (recoverable)", e);
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}
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public void warning (SAXParseException e)
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{
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message ("Warning", e);
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}
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public void fatalError (SAXParseException e)
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{
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message ("FATAL ERROR", e);
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}
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}
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}
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