76 lines
1.3 KiB
C++
76 lines
1.3 KiB
C++
#ifndef __DB_H
|
|
#define __DB_H
|
|
|
|
#include <string>
|
|
#include <list>
|
|
|
|
#include <db_cxx.h>
|
|
|
|
#include "util.hh"
|
|
|
|
using namespace std;
|
|
|
|
|
|
class Database;
|
|
|
|
|
|
class Transaction
|
|
{
|
|
friend class Database;
|
|
|
|
private:
|
|
DbTxn * txn;
|
|
|
|
public:
|
|
Transaction();
|
|
Transaction(Database & _db);
|
|
~Transaction();
|
|
|
|
void commit();
|
|
};
|
|
|
|
|
|
#define noTxn Transaction()
|
|
|
|
|
|
class Database
|
|
{
|
|
friend class Transaction;
|
|
|
|
private:
|
|
DbEnv * env;
|
|
|
|
void requireEnv();
|
|
|
|
Db * openDB(const Transaction & txn,
|
|
const string & table, bool create);
|
|
|
|
public:
|
|
Database();
|
|
~Database();
|
|
|
|
void open(const string & path);
|
|
|
|
void createTable(const string & table);
|
|
|
|
bool queryString(const Transaction & txn, const string & table,
|
|
const string & key, string & data);
|
|
|
|
bool queryStrings(const Transaction & txn, const string & table,
|
|
const string & key, Strings & data);
|
|
|
|
void setString(const Transaction & txn, const string & table,
|
|
const string & key, const string & data);
|
|
|
|
void setStrings(const Transaction & txn, const string & table,
|
|
const string & key, const Strings & data);
|
|
|
|
void delPair(const Transaction & txn, const string & table,
|
|
const string & key);
|
|
|
|
void enumTable(const Transaction & txn, const string & table,
|
|
Strings & keys);
|
|
};
|
|
|
|
|
|
#endif /* !__DB_H */
|