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/*
* Copyright (C) 2014 Christian Mollekopf <chrigi_1@fastmail.fm>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) version 3, or any
* later version accepted by the membership of KDE e.V. (or its
* successor approved by the membership of KDE e.V.), which shall
* act as a proxy defined in Section 6 of version 3 of the license.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include <QByteArrayList>
#include <QHash>
#include <QSet>
#include "applicationdomaintype.h"
namespace Sink {
/**
* A query that matches a set of entities.
*/
class Query
{
public:
enum Flag {
/** Leave the query running an contiously update the result set. */
LiveQuery
};
Q_DECLARE_FLAGS(Flags, Flag)
static Query PropertyFilter(const QByteArray &key, const QVariant &value)
{
Query query;
query.propertyFilter.insert(key, value);
return query;
}
static Query PropertyFilter(const QByteArray &key, const ApplicationDomain::Entity &entity)
{
return PropertyFilter(key, QVariant::fromValue(entity.identifier()));
}
static Query ResourceFilter(const QByteArray &identifier)
{
Query query;
query.resources.append(identifier);
return query;
}
static Query ResourceFilter(const QByteArrayList &identifier)
{
Query query;
query.resources = identifier;
return query;
}
static Query ResourceFilter(const ApplicationDomain::SinkResource &entity)
{
return ResourceFilter(entity.identifier());
}
static Query IdentityFilter(const QByteArray &identifier)
{
Query query;
query.ids << identifier;
return query;
}
static Query IdentityFilter(const QByteArrayList &identifier)
{
Query query;
query.ids = identifier;
return query;
}
static Query IdentityFilter(const ApplicationDomain::Entity &entity)
{
return IdentityFilter(entity.identifier());
}
static Query RequestedProperties(const QByteArrayList &properties)
{
Query query;
query.requestedProperties = properties;
return query;
}
static Query RequestTree(const QByteArray &parentProperty)
{
Query query;
query.parentProperty = parentProperty;
return query;
}
Query(Flags flags = Flags())
{}
Query& operator+=(const Query& rhs)
{
resources += rhs.resources;
ids += rhs.ids;
for (auto it = rhs.propertyFilter.constBegin(); it != rhs.propertyFilter.constEnd(); it++) {
propertyFilter.insert(it.key(), it.value());
}
requestedProperties += rhs.requestedProperties;
parentProperty = rhs.parentProperty;
liveQuery = rhs.liveQuery;
syncOnDemand = rhs.syncOnDemand;
processAll = rhs.processAll;
return *this;
}
friend Query operator+(Query lhs, const Query& rhs)
{
lhs += rhs;
return lhs;
}
QByteArrayList resources;
QByteArrayList ids;
QHash<QByteArray, QVariant> propertyFilter;
QByteArrayList requestedProperties;
QByteArray parentProperty;
bool liveQuery;
bool syncOnDemand;
bool processAll;
};
}
Q_DECLARE_OPERATORS_FOR_FLAGS(Sink::Query::Flags)
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