/*
 * Copyright (c) 1993 Silicon Graphics, Inc.
 * Copyright (c) 1993 Fujitsu, Ltd.
 *
 * Permission to use, copy, modify, distribute, and sell this software and 
 * its documentation for any purpose is hereby granted without fee, provided
 * that (i) the above copyright notices and this permission notice appear in
 * all copies of the software and related documentation, and (ii) the names of
 * Silicon Graphics and Fujitsu may not be used in any advertising or
 * publicity relating to the software without the specific, prior written
 * permission of Silicon Graphics and Fujitsu.
 *
 * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, 
 * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY 
 * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.  
 *
 * IN NO EVENT SHALL SILICON GRAPHICS OR FUJITSU BE LIABLE FOR
 * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
 * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
 * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF 
 * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE 
 * OF THIS SOFTWARE.
 */

#ifndef ox_exchange_h
#define ox_exchange_h

#include "obj-impl.h"

class MarshalBuffer;

class Exchange {
public:
    Exchange();
    virtual ~Exchange();

    virtual Long ref__(Long) = 0;
    virtual void op(MarshalBuffer&, TypeObjId, Long op) = 0;
    virtual Long invoke(MarshalBuffer&, Boolean oneway) = 0;
    virtual void marshal(MarshalBuffer&) = 0;
    virtual BaseObjectRef narrow(TypeObjId, StubCreator) = 0;
};

class RemoteExchange : public Exchange {
public:
    RemoteExchange(
	char* host, ULong port, ULong impl, ULong obj
    );
    RemoteExchange(const RemoteExchange&);
    ~RemoteExchange();

    Long ref__(Long);
    void op(MarshalBuffer&, TypeObjId, Long op);
    Long invoke(MarshalBuffer&, Boolean oneway);
    void marshal(MarshalBuffer&);
    BaseObjectRef narrow(TypeObjId, StubCreator);
protected:
    SharedBaseObjectImpl object_;
    char* hostname_;
    ULong port_;
    ULong impl_;
    ULong obj_;
};

static const Long RemoteExchange_narrow_op = -1;

#endif