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/**
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* '$RCSfile$'
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* Purpose: A Class for upgrading the database to version 1.5
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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: Saurabh Garg
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*
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* '$Author: daigle $'
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* '$Date: 2008-04-02 16:28:31 -0700 (Wed, 02 Apr 2008) $'
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* '$Revision: 3780 $'
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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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import java.io.*;
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import java.sql.Connection;
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import java.sql.ResultSet;
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import java.sql.PreparedStatement;
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import java.sql.Statement;
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import java.sql.SQLException;
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import java.sql.DriverManager;
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import edu.ucsb.nceas.metacat.MetaCatUtil;
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public class upgrade_db_to_1_5{
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static String database = MetaCatUtil.getOption("databaseType");
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static String url = MetaCatUtil.getOption("defaultDB");
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static String user = MetaCatUtil.getOption("user");
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static String password = MetaCatUtil.getOption("password");
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public static void upgrade_xml_nodes(Connection sqlca) throws SQLException{
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Statement sqlStatement = null;
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PreparedStatement pstmt = null;
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ResultSet rset = null;
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// Delete old nodedatanumerical column from xml_nodes if one exsists
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try {
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System.out.println(
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"Deleting old nodedatanumerical column from xml_nodes...");
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pstmt = sqlca.prepareStatement(
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"ALTER TABLE xml_nodes DROP COLUMN nodedatanumerical");
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pstmt.execute();
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pstmt.close();
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System.out.println("Done.");
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} catch (Exception e) {
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System.out.println(" column not found.");
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}
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// Create nodedatanumerical column in xml_nodes
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System.out.println(
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"Creating new nodedatanumerical column in xml_nodes...");
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if (database.equals("oracle")) {
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pstmt = sqlca.prepareStatement(
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"ALTER TABLE xml_nodes ADD nodedatanumerical NUMBER");
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}
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else {
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pstmt = sqlca.prepareStatement(
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"ALTER TABLE xml_nodes ADD nodedatanumerical FLOAT8");
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}
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pstmt.execute();
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pstmt.close();
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System.out.println("Done.");
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// Copy numerical values from nodedata to
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// nodedatanumerical column in xml_nodes
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System.out.println(
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"Please be patient as the next upgrade step can be extremely time consuming.");
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System.out.println(
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"Copy numerical values from nodedata to nodedatanumerical "
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+ "in xml_nodes...");
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sqlStatement = sqlca.createStatement();
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rset = sqlStatement.executeQuery(
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"SELECT DISTINCT NODEID, NODEDATA "
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+ "FROM xml_nodes WHERE "
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+ "nodedata IS NOT NULL AND "
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+ "UPPER(nodedata) = LOWER(nodedata)");
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int count = 0;
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while (rset.next()) {
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String nodeid = rset.getString(1);
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String nodedata = rset.getString(2);
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try {
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if (!nodedata.trim().equals("")) {
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double s = Double.parseDouble(nodedata);
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pstmt = sqlca.prepareStatement(
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"update xml_nodes set nodedatanumerical = " + s +
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" where nodeid=" + nodeid);
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pstmt.execute();
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pstmt.close();
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count++;
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if (count%5 == 0) {
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System.out.println(count + "...");
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}
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}
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} catch (NumberFormatException nfe) {
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} catch (Exception e) {
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System.out.println("Exception:" + e.getMessage());
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}
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}
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System.out.println("\nDone. " + count + " values copied.");
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rset.close();
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sqlStatement.close();
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}
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public static void main(String [] ags){
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try {
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Connection sqlca = null;
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// Create a JDBC connection to the database
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if (database.equals("oracle") {
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DriverManager.registerDriver(new oracle.jdbc.driver.OracleDriver());
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}
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else if (database.equals("postgresql")) {
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DriverManager.registerDriver(new org.postgresql.Driver());
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}
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else if (database.equals("sqlserver")) {
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DriverManager.registerDriver(new com.microsoft.jdbc.sqlserver.SQLServerDriver());
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}
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sqlca = DriverManager.getConnection(url, user, password);
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// Upgrade the xml_nodes table only if it oracle
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if (database.equals("oracle")) {
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upgrade_xml_nodes(sqlca);
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}
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// Close the connection...
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sqlca.close();
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} catch (SQLException ex) {
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System.out.println("SQLException:" + ex.getMessage());
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}
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}
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}
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