jdbc.java

个人感觉非常不错的poleperst-acid

/* 
This file is part of the PolePosition database benchmark
http://www.polepos.org

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public
License along with this program; if not, write to the Free
Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
MA  02111-1307, USA. */

package org.polepos.teams.jdbc;

import java.io.*;

public class Jdbc {
    
    /**
     * Help some of the databases to get a home.
     */
    private static final String[] CREATE_DIRS = new String[]{
        "data/derby",
        "data/mckoi"
    };

    private final static JdbcSettings sSettings = new JdbcSettings();

    public static JdbcSettings settings() {
        return sSettings;
    }

    //
    // make a copy of the default mckoi.conf so that mckoi JDBC can start
    //
    static {
        
        for(String dir : CREATE_DIRS){
            new File(dir).mkdirs();
        }
        
        
        try {

            File cfg = new File("mckoi.conf");
            if (!cfg.exists()) {
                InputStream in = JdbcSettings.class.getClassLoader().getResourceAsStream(
                    "mckoi.conf");
                OutputStream out = new FileOutputStream(cfg);

                // Transfer bytes from in to out
                byte[] buf = new byte[1024];
                int len;
                while ((len = in.read(buf)) > 0) {
                    out.write(buf, 0, len);
                }
                in.close();
                out.close();
            }
        } catch (FileNotFoundException fnfex) {
            fnfex.printStackTrace();
        } catch (IOException ioex) {
            ioex.printStackTrace();
        }
    }

}