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/***************************************************************************
* Copyright (c) 2004 - 2007 Eike Stepper, Germany.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Eike Stepper - initial API and implementation
**************************************************************************/
package org.eclipse.net4j.signal;
import org.eclipse.net4j.internal.util.om.trace.ContextTracer;
import org.eclipse.net4j.stream.BufferInputStream;
import org.eclipse.net4j.stream.BufferOutputStream;
import org.eclipse.net4j.util.ReflectUtil;
import org.eclipse.net4j.util.io.ExtendedDataInputStream;
import org.eclipse.net4j.util.io.ExtendedDataOutputStream;
import org.eclipse.internal.net4j.bundle.OM;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
/**
* @author Eike Stepper
*/
public abstract class IndicationWithResponse extends SignalReactor
{
private static final ContextTracer TRACER = new ContextTracer(OM.DEBUG_SIGNAL, IndicationWithResponse.class);
protected IndicationWithResponse()
{
}
@Override
protected void execute(BufferInputStream in, BufferOutputStream out) throws Exception
{
if (TRACER.isEnabled())
{
TRACER.trace("================ Indicating " + ReflectUtil.getSimpleClassName(this)); //$NON-NLS-1$
}
InputStream wrappedInputStream = wrapInputStream(in);
indicating(ExtendedDataInputStream.wrap(wrappedInputStream));
finishInputStream(wrappedInputStream);
if (TRACER.isEnabled())
{
TRACER.trace("================ Responding " + ReflectUtil.getSimpleClassName(this)); //$NON-NLS-1$
}
OutputStream wrappedOutputStream = wrapOutputStream(out);
responding(ExtendedDataOutputStream.wrap(wrappedOutputStream));
finishOutputStream(wrappedOutputStream);
out.flushWithEOS();
}
protected abstract void indicating(ExtendedDataInputStream in) throws IOException;
/**
* <b>Important Note:</b> The response must not be empty, i.e. the stream
* must be used at least to write a <code>boolean</code>. Otherwise
* synchronization problems will result!
*/
protected abstract void responding(ExtendedDataOutputStream out) throws IOException;
}
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