package it.unimi.dsi.mg4j.index.remote;
/*
* MG4J: Managing Gigabytes for Java
*
* Copyright (C) 2006-2010 Sebastiano Vigna
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by the Free
* Software Foundation; either version 3 of the License, or (at your option)
* any later version.
*
* This library 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 Lesser General Public License
* for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*
*/
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.net.Socket;
/** A abstract class representing a thread that provides services inside an {@linkplain it.unimi.dsi.mg4j.index.remote.IndexServer index server}.
*
* <P>Implementing subclasses must just implement the {@link #run()} method,
* using the predefined {@linkplain #inputStream socket input stream} and {@linkplain #outputStream socket output stream}.
*
* @author Sebastiano Vigna
*/
public abstract class ServerThread implements Runnable {
/** The socket associated to this server thread.*/
protected final Socket socket;
/** The input stream of {@link #socket}, buffered and wrapped inside a data input stream. */
protected final DataInputStream inputStream;
/** The output stream of {@link #socket}, buffered and wrapped inside a data output stream. */
protected final DataOutputStream outputStream;
/** Creates a new server thread.
* @param socket a socket in listening mode that handles client connections.
*/
public ServerThread( final Socket socket ) throws IOException {
this.socket = socket;
inputStream = new DataInputStream( new BufferedInputStream( socket.getInputStream() ) );
outputStream = new DataOutputStream( new BufferedOutputStream( socket.getOutputStream() ) );
}
}