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#ifndef QBTREETXN_H
#define QBTREETXN_H
#include "qbtreedata.h"
class QBtree;
struct btree_txn;
class QBtreeTxn
{
public:
bool get(const QByteArray &baKey, QByteArray *baValue) const;
bool get(const char *key, int keySize, QBtreeData *value) const;
bool get(const QBtreeData &key, QBtreeData *value) const;
bool put(const QByteArray &baKey, const QByteArray &baValue);
bool put(const char *key, int keySize, const char *value, int valueSize);
bool put(const QBtreeData &baKey, const QBtreeData &baValue);
bool remove(const QByteArray &baKey);
bool remove(const QBtreeData &baKey);
bool remove(const char *key, int keySize);
bool commit(quint32 tag);
void abort();
quint32 tag() const;
inline QBtree *btree() const { return mBtree; }
inline btree_txn *handle() const { return mTxn; }
bool isReadOnly() const;
bool isReadWrite() const;
private:
QBtree *mBtree;
btree_txn *mTxn;
QBtreeTxn(QBtree *btree, btree_txn *txn);
~QBtreeTxn();
QBtreeTxn(const QBtreeTxn &); // forbid copy constructor
friend class QBtree;
};
#endif // QBTREETXN_H
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