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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt Creator.
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
****************************************************************************/
#ifndef SQLITESTATEMENT_H
#define SQLITESTATEMENT_H
#include "sqliteglobal.h"
#include "sqliteexception.h"
#include "utf8stringvector.h"
#include <QString>
#include <QVariant>
#include <QVector>
#include <type_traits>
#include <memory>
struct sqlite3_stmt;
struct sqlite3;
class SQLITE_EXPORT SqliteStatement
{
protected:
explicit SqliteStatement(const Utf8String &sqlStatementUtf8);
static void deleteCompiledStatement(sqlite3_stmt *compiledStatement);
bool next() const;
void step() const;
void reset() const;
template<typename Type>
Type value(int column) const;
int columnCount() const;
Utf8StringVector columnNames() const;
void bind(int index, int value);
void bind(int index, qint64 value);
void bind(int index, double value);
void bind(int index, const QString &text);
void bind(int index, const QByteArray &blob);
void bind(int index, const QVariant &value);
template <typename Type>
void bind(const Utf8String &name, const Type &value);
int bindingIndexForName(const Utf8String &name);
void bind(const RowDictionary &rowDictionary);
void bindUnchecked(const RowDictionary &rowDictionary);
void setBindingColumnNames(const Utf8StringVector &bindingColumnNames);
const Utf8StringVector &bindingColumnNames() const;
template <typename ContainerType>
ContainerType values(const QVector<int> &columns, int size = 0) const;
template <typename ContainerType>
ContainerType values(int column = 0) const;
QMap<QString, QVariant> rowColumnValueMap() const;
QMap<QString, QVariant> twoColumnValueMap() const;
static void execute(const Utf8String &sqlStatementUtf8);
template <typename Type>
static Type toValue(const Utf8String &sqlStatementUtf8);
void prepare(const Utf8String &sqlStatementUtf8);
void waitForUnlockNotify() const;
void write(const RowDictionary &rowDictionary);
void writeUnchecked(const RowDictionary &rowDictionary);
static sqlite3 *sqliteDatabaseHandle();
static TextEncoding databaseTextEncoding();
bool checkForStepError(int resultCode) const;
void checkForPrepareError(int resultCode) const;
void setIfIsReadyToFetchValues(int resultCode) const;
void checkIfIsReadyToFetchValues() const;
void checkColumnsAreValid(const QVector<int> &columns) const;
void checkColumnIsValid(int column) const;
void checkBindingIndex(int index) const;
void checkBindingName(int index) const;
void checkParameterCanBeBound(const RowDictionary &rowDictionary, const Utf8String &columnName);
void setBindingParameterCount();
void setBindingColumnNamesFromStatement();
void setColumnCount();
void checkBindingValueMapIsEmpty(const RowDictionary &rowDictionary) const;
bool isReadOnlyStatement() const;
Q_NORETURN static void throwException(const char *whatHasHappened);
template <typename ContainerType>
ContainerType columnValues(const QVector<int> &columnIndices) const;
QString columnName(int column) const;
private:
std::unique_ptr<sqlite3_stmt, void (*)(sqlite3_stmt*)> compiledStatement;
Utf8StringVector bindingColumnNames_;
int bindingParameterCount;
int columnCount_;
mutable bool isReadyToFetchValues;
};
#endif // SQLITESTATEMENT_H
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