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/* ============================================================
*
* This file is a part of digiKam project
* http://www.digikam.org
*
* Date : 2007-03-22
* Description : Building complex database SQL queries from search descriptions
*
* Copyright (C) 2005 by Renchi Raju <renchi dot raju at gmail dot com>
* Copyright (C) 2007-2012 by Marcel Wiesweg <marcel dot wiesweg at gmx dot de>
*
* This program is free software; you can redistribute it
* and/or modify it under the terms of the GNU General
* Public License as published by the Free Software Foundation;
* either version 2, 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 General Public License for more details.
*
* ============================================================ */
#ifndef IMAGEQUERYBUILDER_H
#define IMAGEQUERYBUILDER_H
// Qt includes
#include <QList>
#include <QVariant>
#include <QString>
// Local includes
#include "searchxml.h"
#include "digikam_export.h"
class KUrl;
namespace Digikam
{
class ImageQueryPostHook;
class ImageQueryPostHooks
{
public:
~ImageQueryPostHooks();
/** Call this method after passing the object to buildQuery
* and executing the statement. Returns true if the search is matched.
*/
bool checkPosition(double latitudeNumber, double longitudeNumber);
/** Called by ImageQueryBuilder. Ownership of the object is passed.
*/
void addHook(ImageQueryPostHook* const hook);
protected:
QList<ImageQueryPostHook*> m_postHooks;
};
// ------------------------------------------------------------------------------
class DIGIKAM_DATABASE_EXPORT ImageQueryBuilder
{
public:
ImageQueryBuilder();
QString buildQuery(const QString& q, QList<QVariant>* boundValues, ImageQueryPostHooks* const hooks) const;
QString buildQueryFromUrl(const KUrl& url, QList<QVariant>* boundValues) const;
QString buildQueryFromXml(const QString& xml, QList<QVariant>* boundValues, ImageQueryPostHooks* const hooks) const;
QString convertFromUrlToXml(const KUrl& url) const;
/**
* Use for special queries where ImageTagProperties table is JOIN'ed.
* (Default: false)
*/
void setImageTagPropertiesJoined(bool isJoined);
public:
static void addSqlOperator(QString& sql, SearchXml::Operator op, bool isFirst);
static void addSqlRelation(QString& sql, SearchXml::Relation rel);
static void addNoEffectContent(QString& sql, SearchXml::Operator op);
protected:
void buildGroup(QString& sql, SearchXmlCachingReader& reader,
QList<QVariant>* boundValues, ImageQueryPostHooks* const hooks) const;
bool buildField(QString& sql, SearchXmlCachingReader& reader, const QString& name,
QList<QVariant>* boundValues, ImageQueryPostHooks* const hooks) const;
QString possibleDate(const QString& str, bool& exact) const;
protected:
QString m_longMonths[12];
QString m_shortMonths[12];
bool m_imageTagPropertiesJoined;
};
} // namespace Digikam
#endif // IMAGEQUERYBUILDER_H
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