[110] | 1 | /**********************************************************************
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| 2 | *
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| 3 | * querycache.h --
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| 4 | * Copyright (C) 1999 The New Zealand Digital Library Project
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| 5 | *
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[534] | 6 | * A component of the Greenstone digital library software
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| 7 | * from the New Zealand Digital Library Project at the
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| 8 | * University of Waikato, New Zealand.
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[110] | 9 | *
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[534] | 10 | * This program is free software; you can redistribute it and/or modify
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| 11 | * it under the terms of the GNU General Public License as published by
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| 12 | * the Free Software Foundation; either version 2 of the License, or
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| 13 | * (at your option) any later version.
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| 14 | *
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| 15 | * This program is distributed in the hope that it will be useful,
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| 16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 18 | * GNU General Public License for more details.
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| 19 | *
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| 20 | * You should have received a copy of the GNU General Public License
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| 21 | * along with this program; if not, write to the Free Software
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| 22 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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| 23 | *
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[110] | 24 | *********************************************************************/
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| 25 |
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| 26 |
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| 27 | #ifndef QUERYCACHE_H
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| 28 | #define QUERYCACHE_H
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| 29 |
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| 30 |
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| 31 | #include "text_t.h"
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| 32 | #include "queryinfo.h"
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| 33 |
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| 34 | class resultcacheel
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| 35 | {
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| 36 | public:
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| 37 | resultcacheel ();
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| 38 |
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| 39 | int accessnum;
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| 40 | queryparamclass queryparameters;
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| 41 | queryresultsclass queryresults;
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| 42 | };
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| 43 |
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| 44 |
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| 45 | class querycache {
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| 46 | public:
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| 47 | querycache (int themaxcachesize);
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| 48 | ~querycache ();
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| 49 |
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| 50 | // returns true if the query was found in the cache
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| 51 | // if the query was found then queryresults contains
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| 52 | // the results
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| 53 | bool find (const queryparamclass &queryparams,
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| 54 | queryresultsclass &queryresults);
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| 55 |
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| 56 | void cache (const queryparamclass &queryparams,
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| 57 | const queryresultsclass &queryresults);
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| 58 |
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| 59 | protected:
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| 60 | resultcacheel *resultcache;
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| 61 |
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| 62 | int maxcachesize;
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| 63 | int nextaccessnum;
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| 64 |
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| 65 | int getnextaccessnum ();
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| 66 | int getfreecachenum ();
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| 67 | };
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| 68 |
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| 69 |
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| 70 | #endif
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