03926420d0
i.e. allow minetestmapper to query the database for a list of blocks in a specific range (corresponding to the requested geometry), instead of always obtaining a full list off all blocks. As postgresql is the only database which supports this efficiently, this option is only effective for postgresql.
46 lines
1.1 KiB
C++
46 lines
1.1 KiB
C++
#ifndef _DB_SQLITE3_H
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#define _DB_SQLITE3_H
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#include "db.h"
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#include <sqlite3.h>
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#if __cplusplus >= 201103L
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#include <unordered_map>
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#else
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#include <map>
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#endif
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#include <string>
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#include <sstream>
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#include "types.h"
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class DBSQLite3 : public DB {
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#if __cplusplus >= 201103L
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typedef std::unordered_map<int64_t, ustring> BlockCache;
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#else
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typedef std::map<int64_t, ustring> BlockCache;
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#endif
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public:
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DBSQLite3(const std::string &mapdir);
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virtual int getBlocksQueriedCount(void);
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virtual int getBlocksReadCount(void);
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virtual const BlockPosList &getBlockPosList();
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virtual Block getBlockOnPos(const BlockPos &pos);
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~DBSQLite3();
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private:
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int m_blocksQueriedCount;
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int m_blocksReadCount;
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sqlite3 *m_db;
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sqlite3_stmt *m_blockPosListStatement;
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sqlite3_stmt *m_blockOnPosStatement;
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sqlite3_stmt *m_blockOnRowidStatement;
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std::ostringstream m_getBlockSetStatementBlocks;
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BlockCache m_blockCache;
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BlockPosList m_BlockPosList;
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void prepareBlockOnPosStatement(void);
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Block getBlockOnPosRaw(const BlockPos &pos);
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void cacheBlocks(sqlite3_stmt *SQLstatement);
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};
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#endif // _DB_SQLITE3_H
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