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package org.nakedobjects.nos.remote.encoded;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.SocketException;

import org.apache.log4j.Logger;
import org.nakedobjects.noa.util.ByteDecoder;
import org.nakedobjects.noa.util.ByteEncoder;
import org.nakedobjects.nof.core.util.DebugByteDecoder;
import org.nakedobjects.nof.core.util.DebugByteEncoder;
import org.nakedobjects.nos.remote.command.Request;
import org.nakedobjects.nos.remote.command.socket.ClientConnection;


class EncodingClientConnection extends ClientConnection {
    private static final Logger LOG = Logger.getLogger(EncodingClientConnection.class);
    private ByteEncoder encoder;
    private ByteDecoder decoder;


    protected void openStreams(InputStream input, OutputStream output) throws IOException {
        encoder = new DebugByteEncoder(output); 
        decoder = new DebugByteDecoder(input);
    }

    protected Object request(final Request request) throws IOException {
            LOG.debug("sending request " + request);
            try {
                write(request);
            } catch (SocketException e) {
                reconnect();
                write(request);
            }
            Object object = decoder.getObject();
            LOG.debug("response received: " + object);
            decoder.end();
            return object;
    }

    private void write(final Request request) throws IOException {
        encoder.add(request.getClass().getName());
        request.encode(encoder);
        encoder.end();
    }

    
}
// Copyright (c) Naked Objects Group Ltd.