transfercommon.java

一个用java写的开源的数据库系统

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 * This product includes Hypersonic SQL.
 * Originally developed by Thomas Mueller and the Hypersonic SQL Group. 
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 *          product includes Hypersonic SQL." 
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 * Hypersonic SQL Group.
 *
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 * For work added by the HSQL Development Group:
 *
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 * All rights reserved.
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 * modification, are permitted provided that the following conditions are met:
 *
 * Redistributions of source code must retain the above copyright notice, this
 * list of conditions and the following disclaimer, including earlier
 * license statements (above) and comply with all above license conditions.
 *
 * Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
 * and/or other materials provided with the distribution, including earlier
 * license statements (above) and comply with all above license conditions.
 *
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 * contributors may be used to endorse or promote products derived from this
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package org.hsqldb.util;

import java.util.Vector;
import java.io.*;

// sqlbob@users 20020407 - patch 1.7.0 - reengineering

/**
 * Common code in Swing and AWT versions of Tranfer
 * @version 1.7.0
 */
class TransferCommon {

    static void savePrefs(String f, DataAccessPoint sourceDb,
                          DataAccessPoint targetDb, Traceable tracer,
                          Vector tTable) {

        TransferTable t;

        try {
            FileOutputStream   fos = new FileOutputStream(f);
            ObjectOutputStream oos = new ObjectOutputStream(fos);

            for (int i = 0; i < tTable.size(); i++) {
                t          = (TransferTable) tTable.elementAt(i);
                t.sourceDb = null;
                t.destDb   = null;
                t.tracer   = null;
            }

            oos.writeObject(tTable);

            for (int i = 0; i < tTable.size(); i++) {
                t          = (TransferTable) tTable.elementAt(i);
                t.tracer   = tracer;
                t.sourceDb = (TransferDb) sourceDb;
                t.destDb   = targetDb;
            }
        } catch (IOException e) {
            System.out.println("pb in SavePrefs : " + e.toString());
            e.printStackTrace();
        }
    }

    static Vector loadPrefs(String f, DataAccessPoint sourceDb,
                            DataAccessPoint targetDb, Traceable tracer) {

        TransferTable t;
        Vector        tTable = null;

        try {
            FileInputStream   fis = new FileInputStream(f);
            ObjectInputStream ois = new ObjectInputStream(fis);

            tTable = (Vector) ois.readObject();

            for (int i = 0; i < tTable.size(); i++) {
                t          = (TransferTable) tTable.elementAt(i);
                t.tracer   = tracer;
                t.sourceDb = (TransferDb) sourceDb;
                t.destDb   = targetDb;
            }
        } catch (ClassNotFoundException e) {
            System.out.println("class not found pb in LoadPrefs : "
                               + e.toString());

            tTable = new Vector();
        } catch (IOException e) {
            System.out.println("IO pb in LoadPrefs : actionPerformed"
                               + e.toString());

            tTable = new Vector();
        }

        return (tTable);
    }

    private TransferCommon() {}
}