forked from ShadowNinja/minetest-mapper-cpp
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db-sqlite3.h
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/
db-sqlite3.h
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#ifndef _DB_SQLITE3_H
#define _DB_SQLITE3_H
#include "db.h"
#include <sqlite3.h>
#if __cplusplus >= 201103L
#include <unordered_map>
#include <unordered_set>
#else
#include <map>
#include <set>
#endif
#include <string>
#include <sstream>
#include "types.h"
class DBSQLite3 : public DB {
#if __cplusplus >= 201103L
typedef std::unordered_map<int64_t, ustring> BlockCache;
typedef std::unordered_set<int64_t> BlockIdSet;
#else
typedef std::map<int64_t, ustring> BlockCache;
typedef std::set<int64_t> BlockIdSet;
#endif
public:
DBSQLite3(const std::string &mapdir);
virtual int getBlocksQueriedCount(void);
virtual int getBlocksReadCount(void);
virtual const BlockPosList &getBlockPosList();
virtual Block getBlockOnPos(const BlockPos &pos);
~DBSQLite3();
static void setLimitBlockListQuerySize(int count = -1);
static bool warnDatabaseLockDelay;
private:
static int m_blockListQuerySize;
static bool m_firstDatabaseInitialized;
int m_blocksQueriedCount;
int m_blocksReadCount;
sqlite3 *m_db;
sqlite3_stmt *m_dataVersionStatement;
sqlite3_stmt *m_blockPosListStatement;
sqlite3_stmt *m_blockOnPosStatement;
sqlite3_stmt *m_blockOnRowidStatement;
std::ostringstream m_getBlockSetStatementBlocks;
BlockCache m_blockCache;
BlockPosList m_blockPosList;
BlockIdSet m_blockIdSet; // temporary storage. Only used if m_blockListQuerySize > 0
uint64_t m_blockPosListQueryTime;
int64_t getDataVersion();
void prepareBlockOnPosStatement(void);
int getBlockPosListRows();
Block getBlockOnPosRaw(const BlockPos &pos);
void cacheBlocks(sqlite3_stmt *SQLstatement);
};
#endif // _DB_SQLITE3_H