networkserverutil.java

derby database source code.good for you.

/*

   Derby - Class nserverdemo.NetworkServerUtil

   Copyright 2003, 2004 The Apache Software Foundation or its licensors, as applicable.

   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

      http://www.apache.org/licenses/LICENSE-2.0

   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.

 */

package nserverdemo;

import java.util.Properties;
import java.sql.SQLException;
import java.sql.DriverManager;
import java.io.IOException;
import java.sql.Statement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.SQLWarning;
import java.io.PrintWriter;
import java.net.InetAddress;

import org.apache.derby.drda.NetworkServerControl; //derby network server
import java.io.FileOutputStream;

/**
 * Class for starting the Derby NetworkServer on a separate Thread.
 * This class provides methods to start, and shutdown the server
 */

public class NetworkServerUtil  {

    private int portNum;
    private NetworkServerControl serverControl;
	private PrintWriter pw;

    public NetworkServerUtil(int port, PrintWriter pw) {

        this.portNum = port;
		this.pw = pw;
        try {
          serverControl = new
			  NetworkServerControl(InetAddress.getByName("localhost"), port);
          pw.println("Derby Network Server created");
        } catch (Exception e) {
            e.printStackTrace();
          }
    }

    /**
     * trace utility of server
     */
    public void trace(boolean onoff) {
      try {
        serverControl.trace(onoff);
      } catch (Exception e) {
          e.printStackTrace();
        }
    }


	/**
	 * Try to test for a connection
	 * Throws exception if unable to get a connection
	 */
	public void testForConnection()
	throws Exception {
		serverControl.ping();
	}


    /**
     * Shutdown the NetworkServer
     */
    public void shutdown() {
        try {
            serverControl.shutdown();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }


	/**
	 * Start Derby Network server
	 * 
	 */
    public void start() {
        try {
			serverControl.start(pw);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }


}