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// **********************************************************************
//
// Copyright (c) 2003-2008 ZeroC, Inc. All rights reserved.
//
// This copy of Ice is licensed to you under the terms described in the
// ICE_LICENSE file included in this distribution.
//
// **********************************************************************
package IceInternal;
public abstract class EventHandler extends SelectorHandler
{
//
// Return true if the handler is for a datagram transport, false otherwise.
//
abstract public boolean datagram();
//
// Return true if read() must be called before calling message().
//
abstract public boolean readable();
//
// Read data via the event handler. May only be called if
// readable() returns true.
//
abstract public boolean read(BasicStream is);
//
// A complete message has been received.
//
abstract public void message(BasicStream stream, ThreadPool threadPool);
//
// Will be called if the event handler is finally
// unregistered. (Calling unregister() does not unregister
// immediately.)
//
abstract public void finished(ThreadPool threadPool);
//
// Propagate an exception to the event handler.
//
abstract public void exception(Ice.LocalException ex);
//
// Get a textual representation of the event handler.
//
abstract public String toString();
public IceInternal.Instance
instance()
{
return _instance;
}
protected
EventHandler(Instance instance)
{
_instance = instance;
_stream = new BasicStream(instance);
}
protected Instance _instance;
//
// The _stream data member is only for use by the ThreadPool or by the
// connection for validation.
//
protected BasicStream _stream;
boolean _serializing;
boolean _registered;
}
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