forked from Mirrorlandia_minetest/minetest
96 lines
2.5 KiB
C
96 lines
2.5 KiB
C
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/*
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Minetest
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Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef DATABASE_POSTGRESQL_HEADER
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#define DATABASE_POSTGRESQL_HEADER
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#include <string>
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#include <libpq-fe.h>
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#include "database.h"
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#include "util/basic_macros.h"
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class Settings;
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class Database_PostgreSQL : public Database
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{
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public:
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Database_PostgreSQL(const Settings &conf);
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~Database_PostgreSQL();
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void beginSave();
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void endSave();
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bool saveBlock(const v3s16 &pos, const std::string &data);
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void loadBlock(const v3s16 &pos, std::string *block);
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bool deleteBlock(const v3s16 &pos);
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void listAllLoadableBlocks(std::vector<v3s16> &dst);
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bool initialized() const;
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private:
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// Database initialization
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void connectToDatabase();
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void initStatements();
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void createDatabase();
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inline void prepareStatement(const std::string &name, const std::string &sql)
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{
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checkResults(PQprepare(m_conn, name.c_str(), sql.c_str(), 0, NULL));
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}
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// Database connectivity checks
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void ping();
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void verifyDatabase();
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// Database usage
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PGresult *checkResults(PGresult *res, bool clear = true);
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inline PGresult *execPrepared(const char *stmtName, const int paramsNumber,
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const void **params,
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const int *paramsLengths = NULL, const int *paramsFormats = NULL,
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bool clear = true, bool nobinary = true)
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{
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return checkResults(PQexecPrepared(m_conn, stmtName, paramsNumber,
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(const char* const*) params, paramsLengths, paramsFormats,
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nobinary ? 1 : 0), clear);
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}
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// Conversion helpers
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inline int pg_to_int(PGresult *res, int row, int col)
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{
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return atoi(PQgetvalue(res, row, col));
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}
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inline v3s16 pg_to_v3s16(PGresult *res, int row, int col)
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{
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return v3s16(
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pg_to_int(res, row, col),
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pg_to_int(res, row, col + 1),
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pg_to_int(res, row, col + 2)
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);
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}
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// Attributes
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std::string m_connect_string;
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PGconn *m_conn;
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int m_pgversion;
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};
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#endif
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