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cdesktop/cde/programs/dtinfo/DtMmdb/index/hash.h

70 lines
2.0 KiB
C++

/*
* $XConsortium: hash.h /main/4 1996/06/11 17:21:59 cde-hal $
*
* Copyright (c) 1993 HAL Computer Systems International, Ltd.
* All rights reserved. Unpublished -- rights reserved under
* the Copyright Laws of the United States. USE OF A COPYRIGHT
* NOTICE IS PRECAUTIONARY ONLY AND DOES NOT IMPLY PUBLICATION
* OR DISCLOSURE.
*
* THIS SOFTWARE CONTAINS CONFIDENTIAL INFORMATION AND TRADE
* SECRETS OF HAL COMPUTER SYSTEMS INTERNATIONAL, LTD. USE,
* DISCLOSURE, OR REPRODUCTION IS PROHIBITED WITHOUT THE
* PRIOR EXPRESS WRITTEN PERMISSION OF HAL COMPUTER SYSTEMS
* INTERNATIONAL, LTD.
*
* RESTRICTED RIGHTS LEGEND
* Use, duplication, or disclosure by the Government is subject
* to the restrictions as set forth in subparagraph (c)(l)(ii)
* of the Rights in Technical Data and Computer Software clause
* at DFARS 252.227-7013.
*
* HAL COMPUTER SYSTEMS INTERNATIONAL, LTD.
* 1315 Dell Avenue
* Campbell, CA 95008
*
*/
#ifndef _hash_h
#define _hash_h 1
//#include <assert.h>
#include "utility/buffer.h"
#include "utility/key.h"
class hash
{
public:
hash();
virtual ~hash() ;
virtual void init_data_member(unsigned int v_key_set_sz = 0,
unsigned int v_hash_func_sz = 0,
unsigned int v_hash_tbl_sz = 0);
// status inquiry functions
virtual int keysetsize() const { return v_key_set_sz; };
virtual int hashtablesize() const { return v_hash_tbl_sz; };
virtual int hashfuncsize() const { return v_hash_func_sz; };
// return the hash value for a key
virtual int hashTo(const key_type&) = 0;
// load a set of key-oid pairs
virtual Boolean load() { return false; };
// compacted disk representation In and Out functions
virtual int cdr_sizeof();
virtual io_status cdrOut(buffer&);
virtual io_status cdrIn(buffer&);
protected:
unsigned int v_key_set_sz;
unsigned int v_hash_func_sz;
unsigned int v_hash_tbl_sz;
};
#endif