/usr/include/KDb3/KDbTransaction.h is in libkdb3-dev 3.1.0-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 | /* This file is part of the KDE project
Copyright (C) 2003-2017 Jarosław Staniek <staniek@kde.org>
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this program; see the file COPYING. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef KDB_TRANSACTION_H
#define KDB_TRANSACTION_H
#include "config-kdb.h"
#include "kdb_export.h"
#include <QtGlobal>
class KDbConnection;
class KDbTransactionData;
/**
* @brief This class encapsulates a single database transaction
*
* The KDbTransaction handle abstracts a database transaction for given database connection.
* Transaction objects are value-based, implicitly shared.
*
* Lifetime of the transaction object is closely related to a KDbConnection object.
* Deleting the either instance does not commit or rollback the actual transaction.
* Use KDbTransactionGuard for automatic commits or rolls back.
*
* @see KDbConnection::beginTransaction()
*/
class KDB_EXPORT KDbTransaction
{
public:
/**
* @brief Constructs a null transaction.
*
* @note It can be initialized only by KDbConnection.
*/
KDbTransaction();
/**
* @brief Copy constructor
*/
KDbTransaction(const KDbTransaction& trans);
~KDbTransaction();
//! Options for commiting and rolling back transactions
//! @see KDbConnection::beginTransaction() KDbConnection::rollbackTransaction()
//! @see KDbTransactionGuard::commit() KDbTransactionGuard::rollback()
enum class CommitOption {
None = 0,
IgnoreInactive = 1 //!< Do not return error for inactive or null transactions when
//!< requesting commit or rollback
};
Q_DECLARE_FLAGS(CommitOptions, CommitOption)
KDbTransaction& operator=(const KDbTransaction& trans);
/**
* @brief Returns @c true if this transaction is equal to @a other; otherwise returns @c false
*
* Two transactions are equal if they encapsulate the same physical transaction,
* i.e. copy constructor or assignment operator was used.
* Two null transaction objects are equal.
*/
bool operator==(const KDbTransaction& other) const;
//! @return @c true if this transaction is not equal to @a other; otherwise returns @c false.
//! @since 3.1
inline bool operator!=(const KDbTransaction &other) const { return !operator==(other); }
/**
* @brief Returns database connection for which the transaction belongs.
*
* @c nullptr is returned for null transactions.
*/
KDbConnection* connection();
//! @overload
//! @since 3.1
const KDbConnection* connection() const;
/**
* @brief Returns @c true if transaction is active (i.e. started)
*
* @return @c false also if transaction is uninitialised (null) or not started.
* @see KDbConnection::beginTransaction()
* @since 3.1
*/
bool isActive() const;
/**
* @brief Returns @c true if this transaction is null.
*
* Null implies !isActive().
*/
bool isNull() const;
#ifdef KDB_TRANSACTIONS_DEBUG
//! Helper for debugging, returns value of global transaction data reference counter
static int globalCount();
#endif
protected:
KDbTransactionData *m_data;
friend class KDbConnection;
};
Q_DECLARE_OPERATORS_FOR_FLAGS(KDbTransaction::CommitOptions)
#endif
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