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/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/
**
** This file is part of the QtAddOn.JsonDb module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** This file may be used under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation and
** appearing in the file LICENSE.LGPL included in the packaging of this
** file. Please review the following information to ensure the GNU Lesser
** General Public License version 2.1 requirements will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU General
** Public License version 3.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of this
** file. Please review the following information to ensure the GNU General
** Public License version 3.0 requirements will be met:
** http://www.gnu.org/copyleft/gpl.html.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef JSONDB_QUERY_H
#define JSONDB_QUERY_H
#include <QDebug>
#include <QObject>
#include <QHash>
#include <QStringList>
#include <QVariant>
#include "jsondberrors.h"
#include <qjsonarray.h>
#include <qjsonobject.h>
#include <qjsonvalue.h>
#include "jsondbobject.h"
QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE_JSONDB_PARTITION
class JsonDbPartition;
class Q_JSONDB_PARTITION_EXPORT JsonDbQueryTerm
{
public:
JsonDbQueryTerm();
~JsonDbQueryTerm();
QString propertyVariable() const { return mPropertyVariable; }
void setPropertyVariable(const QString &variable)
{ mPropertyVariable = variable; }
inline bool hasPropertyName() const { return !mPropertyName.isEmpty(); }
QString propertyName() const { return mPropertyName; }
void setPropertyName(const QString &propertyName)
{ mPropertyName = propertyName; mFieldPath = propertyName.split(QLatin1Char('.')); }
QString op() const { return mOp; }
void setOp(QString op) { mOp = op; }
QString joinField() const { return mJoinField; }
void setJoinField(QString joinField)
{
mJoinField = joinField;
if (!joinField.isEmpty()) {
QStringList joinFields = joinField.split(QStringLiteral("->"));
mJoinPaths.resize(joinFields.size());
for (int j = 0; j < joinFields.size(); j++)
mJoinPaths[j] = joinFields[j].split(QLatin1Char('.'));
}
}
const QVector<QStringList> &joinPaths() const { return mJoinPaths; }
QString variable() const { return mVariable; }
void setVariable(const QString variable) { mVariable = variable; }
inline bool hasValue() const { return !mValue.isUndefined(); }
QJsonValue value() const;
void setValue(const QJsonValue &v) { mValue = v; }
QRegExp ®Exp() { return mRegExp; }
void setRegExp(const QRegExp ®Exp) { mRegExp = regExp; }
const QRegExp ®ExpConst() const { return mRegExp; }
private:
QString mPropertyVariable;
QString mPropertyName;
QString mVariable;
QJsonValue mValue;
QRegExp mRegExp;
QStringList mFieldPath;
QString mOp;
QString mJoinField;
QVector<QStringList> mJoinPaths;
};
class Q_JSONDB_PARTITION_EXPORT JsonDbOrQueryTerm
{
public:
JsonDbOrQueryTerm();
JsonDbOrQueryTerm(const JsonDbQueryTerm &term);
~JsonDbOrQueryTerm();
const QList<JsonDbQueryTerm> &terms() const { return mTerms; }
void addTerm(const JsonDbQueryTerm &term) { mTerms.append(term); }
QList<QString> propertyNames() const;
QList<QString> findUnindexablePropertyNames() const;
private:
QList<JsonDbQueryTerm> mTerms;
};
class Q_JSONDB_PARTITION_EXPORT JsonDbOrderTerm
{
public:
JsonDbOrderTerm() : ascending(false) { }
~JsonDbOrderTerm() { }
bool ascending;
QString propertyName;
};
class Q_JSONDB_PARTITION_EXPORT JsonDbQuery
{
public:
JsonDbQuery();
~JsonDbQuery();
QList<JsonDbOrQueryTerm> queryTerms;
QList<JsonDbOrderTerm> orderTerms;
QString query;
QStringList mapExpressionList;
QStringList mapKeyList;
QString aggregateOperation;
QMap<QString,QJsonValue> bindings;
inline bool isEmpty() const { return queryTerms.isEmpty() && orderTerms.isEmpty(); }
QSet<QString> matchedTypes() const { return mMatchedTypes; }
bool match(const JsonDbObject &object, QHash<QString, JsonDbObject> *objectCache, JsonDbPartition *partition = 0) const;
inline QJsonValue termValue(const JsonDbQueryTerm &term) const
{ return term.hasValue() ? term.value() : bindings.value(term.variable(), QJsonValue(QJsonValue::Undefined)); }
bool isAscending() const;
private:
QSet<QString> mMatchedTypes;
friend class JsonDbQueryParserPrivate;
};
QT_END_NAMESPACE_JSONDB_PARTITION
QT_END_HEADER
#endif // JSONDB_QUERY_H
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