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7bd4f95b8c
In SQLite bindings are not cleared by sqlite3_reset() calls, so skipping a sqlite3_bind call to create a NULL value doesn't work, instead the previous value will be written. To fix this, I clear all bindings in SqlQuery::reset and make sure to explicitly bind NULL when desired in SqlQuery::bind. To make sure there's no confusion about SqlQuery::reset and sqlite3_reset, I rename our method to reset_and_clear_bindings().
98 lines
2.1 KiB
C++
98 lines
2.1 KiB
C++
/*
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* Copyright (C) by Klaas Freitag <freitag@owncloud.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*/
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#ifndef OWNSQL_H
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#define OWNSQL_H
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#include <sqlite3.h>
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#include <QObject>
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#include <QVariant>
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#include "owncloudlib.h"
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namespace OCC {
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/**
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* @brief The SqlDatabase class
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* @ingroup libsync
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*/
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class OWNCLOUDSYNC_EXPORT SqlDatabase
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{
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Q_DISABLE_COPY(SqlDatabase)
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public:
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explicit SqlDatabase();
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bool isOpen();
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bool openOrCreateReadWrite( const QString& filename );
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bool openReadOnly( const QString& filename );
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bool transaction();
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bool commit();
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void close();
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QString error() const;
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sqlite3* sqliteDb();
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private:
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bool openHelper( const QString& filename, int sqliteFlags );
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bool checkDb();
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sqlite3 *_db;
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QString _error; // last error string
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int _errId;
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};
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/**
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* @brief The SqlQuery class
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* @ingroup libsync
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*/
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class OWNCLOUDSYNC_EXPORT SqlQuery
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{
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Q_DISABLE_COPY(SqlQuery)
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public:
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explicit SqlQuery(SqlDatabase& db);
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explicit SqlQuery(const QString& sql, SqlDatabase& db);
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~SqlQuery();
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QString error() const;
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/// Checks whether the value at the given column index is NULL
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bool nullValue(int index);
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QString stringValue(int index);
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int intValue(int index);
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quint64 int64Value(int index);
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QByteArray baValue(int index);
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bool isSelect();
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bool isPragma();
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bool exec();
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int prepare( const QString& sql );
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bool next();
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void bindValue(int pos, const QVariant& value);
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QString lastQuery() const;
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int numRowsAffected();
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void reset_and_clear_bindings();
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void finish();
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private:
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sqlite3 *_db;
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sqlite3_stmt *_stmt;
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QString _error;
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int _errId;
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QString _sql;
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};
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} // namespace OCC
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#endif // OWNSQL_H
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