| 1 | /**********************************************************************
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| 2 | *
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| 3 | * sqlitedbclass.h --
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| 4 | * Copyright (C) 2008 DL Consulting Ltd
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| 5 | * Copyright (C) 2010 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 SQLITEDBCLASS_H
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| 28 | #define SQLITEDBCLASS_H
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| 29 |
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| 30 |
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| 31 | #include "sqldbclass.h"
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| 32 | #include "sqlite3.h"
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| 33 |
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| 34 |
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| 35 | class sqlitedbclass : public sqldbclass
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| 36 | {
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| 37 | public:
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| 38 | sqlitedbclass(const text_t& gsdlhome);
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| 39 | virtual ~sqlitedbclass();
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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,
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| 43 | bool need_filelock);
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| 44 |
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| 45 | void closedatabase ();
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| 46 |
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| 47 | void deletekey (const text_t &key);
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| 48 |
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| 49 | // returns file extension string
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| 50 | text_t getfileextension ();
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| 51 |
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| 52 | // returns true on success
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| 53 | bool getkeydata (const text_t& key, text_t &data);
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| 54 |
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| 55 | // returns array of keys
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| 56 | text_tarray getkeys ();
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| 57 |
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| 58 |
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| 59 | // returns array of document OIDs
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| 60 | virtual text_tarray get_documents_with_metadata_value (const text_tarray &metadata_element_names,
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| 61 | const text_t &metadata_value,
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| 62 | const text_t &sort_by_metadata_element_name);
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| 63 |
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| 64 | // returns array of values
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| 65 | virtual text_tarray get_metadata_values (const text_tarray &metadata_element_names,
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| 66 | const text_t &metadata_value_filter,
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| 67 | const text_t &metadata_value_grouping_expression);
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| 68 |
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| 69 | // returns true on success
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| 70 | bool setkeydata (const text_t &key, const text_t &data);
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| 71 |
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| 72 | protected:
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| 73 | text_t openfile;
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| 74 | sqlite3* sqlitefile;
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| 75 |
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| 76 | virtual text_t sql_safe (const text_t &value_arg);
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| 77 |
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| 78 | virtual bool sqlexec (const text_t &sql_cmd);
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| 79 | virtual bool sqlgetarray (const text_t &sql_cmd, vector<text_tmap> &sql_results);
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| 80 | virtual bool sqltableexists (const text_t &table_name);
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| 81 |
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| 82 | };
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| 83 |
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| 84 |
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| 85 | #endif
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