1 | /**********************************************************************
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2 | *
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3 | * tdbclass.h --
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4 | *
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5 | * Copyright (C) 2011 The New Zealand Digital Library Project
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6 | *
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7 | * A component of the Greenstone digital library software
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8 | * from the New Zealand Digital Library Project at the
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9 | * University of Waikato, New Zealand.
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10 | *
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11 | * This program is free software; you can redistribute it and/or modify
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12 | * it under the terms of the GNU General Public License as published by
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13 | * the Free Software Foundation; either version 2 of the License, or
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14 | * (at your option) any later version.
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15 | *
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16 | * This program is distributed in the hope that it will be useful,
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17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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19 | * GNU General Public License for more details.
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20 | *
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21 | * You should have received a copy of the GNU General Public License
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22 | * along with this program; if not, write to the Free Software
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23 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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24 | *
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25 | *********************************************************************/
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26 |
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27 | #ifndef TDBCLASS_H
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28 | #define TDBCLASS_H
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29 |
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30 | #include "gsdlconf.h"
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31 | #include "dbclass.h"
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32 | #include "tdb.h"
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33 |
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34 | class tdbclass : public dbclass
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35 | {
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36 |
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37 | public:
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38 | tdbclass(const text_t& gsdlhome);
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39 | ~tdbclass();
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40 |
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41 | // returns true if opened
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42 | bool opendatabase (const text_t &filename, int mode, int num_retrys, bool need_filelock);
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43 |
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44 | void closedatabase ();
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45 |
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46 | void deletekey (const text_t &key);
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47 |
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48 | // returns file extension string
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49 | text_t getfileextension ();
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50 |
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51 | // returns true on success
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52 | bool getkeydata (const text_t& key, text_t &data);
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53 |
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54 | // returns array of keys
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55 | text_tarray getkeys ();
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56 |
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57 | // returns true on success
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58 | bool setkeydata (const text_t &key, const text_t &data);
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59 |
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60 | protected:
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61 | text_t openfile;
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62 | TDB_CONTEXT *tdb;
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63 |
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64 | text_t getfirstkey ();
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65 | text_t getnextkey (const text_t &key);
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66 |
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67 | };
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68 |
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69 | #endif
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