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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.
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "jsondbephemeralpartition.h"
#include "jsondbobject.h"
#include "jsondbquery.h"
#include "jsondberrors.h"
#include "jsondbstrings.h"
#include "private/jsondbutils_p.h"
#include <qjsonobject.h>
QT_USE_NAMESPACE_JSONDB_PARTITION
JsonDbEphemeralPartition::JsonDbEphemeralPartition(const QString &name, QObject *parent) :
QObject(parent)
, mName(name)
{
qRegisterMetaType<QSet<QString> >("QSet<QString>");
qRegisterMetaType<JsonDbUpdateList>("JsonDbUpdateList");
}
bool JsonDbEphemeralPartition::get(const QUuid &uuid, JsonDbObject *result) const
{
ObjectMap::const_iterator it = mObjects.find(uuid);
if (it == mObjects.end())
return false;
if (result)
*result = it.value();
return true;
}
JsonDbQueryResult JsonDbEphemeralPartition::queryObjects(const JsonDbOwner *owner, const JsonDbQuery &query, int limit, int offset)
{
Q_UNUSED(owner);
JsonDbQueryResult result;
if (!query.orderTerms.isEmpty()) {
result.code = JsonDbError::InvalidMessage;
result.message = QStringLiteral("Cannot query with order term on ephemeral objects");
return result;
}
if (limit != -1 || offset != 0) {
result.code = JsonDbError::InvalidMessage;
result.message = QStringLiteral("Cannot query with limit or offset on ephemeral objects");
return result;
}
JsonDbObjectList results;
ObjectMap::const_iterator it, e;
for (it = mObjects.begin(), e = mObjects.end(); it != e; ++it) {
QJsonObject object = it.value();
if (query.match(object, 0, 0))
results.append(object);
}
result.offset = offset;
result.data = results;
result.state = 0;
result.sortKeys.append(JsonDbString::kUuidStr);
return result;
}
JsonDbWriteResult JsonDbEphemeralPartition::updateObjects(const JsonDbOwner *owner, const JsonDbObjectList &objects, JsonDbPartition::ConflictResolutionMode mode)
{
Q_UNUSED(mode);
JsonDbWriteResult result;
QList<JsonDbUpdate> updated;
foreach (const JsonDbObject &toUpdate, objects) {
JsonDbObject object = toUpdate;
JsonDbObject oldObject;
if (mObjects.contains(object.uuid()))
oldObject = mObjects[object.uuid()];
JsonDbNotification::Action action = JsonDbNotification::Update;
if (object.uuid().isNull())
object.generateUuid();
// FIXME: stale update rejection, access control
if (object.value(JsonDbString::kDeletedStr).toBool()) {
if (mObjects.contains(object.uuid())) {
action = JsonDbNotification::Remove;
mObjects.remove(object.uuid());
} else {
result.code = JsonDbError::MissingObject;
result.message = QStringLiteral("Cannot remove non-existing object");
return result;
}
} else {
if (!mObjects.contains(object.uuid()))
action = JsonDbNotification::Create;
object.insert(JsonDbString::kOwnerStr, owner->ownerId());
object.computeVersion();
mObjects[object.uuid()] = object;
}
result.objectsWritten.append(object);
updated.append(JsonDbUpdate(oldObject, object, action));
}
QMetaObject::invokeMethod(this, "objectsUpdated", Qt::QueuedConnection,
Q_ARG(JsonDbUpdateList, updated));
return result;
}
void JsonDbEphemeralPartition::addNotification(JsonDbNotification *notification)
{
notification->setPartition(0);
const JsonDbQuery &parsedQuery = notification->parsedQuery();
const QList<JsonDbOrQueryTerm> &orQueryTerms = parsedQuery.queryTerms;
bool generic = true;
for (int i = 0; i < orQueryTerms.size(); i++) {
const JsonDbOrQueryTerm &orQueryTerm = orQueryTerms[i];
const QList<JsonDbQueryTerm> &terms = orQueryTerm.terms();
if (terms.size() == 1) {
const JsonDbQueryTerm &term = terms[0];
if (term.op() == QLatin1Char('=')) {
if (term.propertyName() == JsonDbString::kUuidStr) {
mKeyedNotifications.insert(parsedQuery.termValue(term).toString(), notification);
generic = false;
break;
} else if (term.propertyName() == JsonDbString::kTypeStr) {
QString objectType = parsedQuery.termValue(term).toString();
mKeyedNotifications.insert(objectType, notification);
generic = false;
break;
}
}
}
}
if (generic)
mKeyedNotifications.insert(QStringLiteral("__generic_notification__"), notification);
}
void JsonDbEphemeralPartition::removeNotification(JsonDbNotification *notification)
{
const JsonDbQuery &parsedQuery = notification->parsedQuery();
const QList<JsonDbOrQueryTerm> &orQueryTerms = parsedQuery.queryTerms;
for (int i = 0; i < orQueryTerms.size(); i++) {
const JsonDbOrQueryTerm &orQueryTerm = orQueryTerms[i];
const QList<JsonDbQueryTerm> &terms = orQueryTerm.terms();
if (terms.size() == 1) {
const JsonDbQueryTerm &term = terms[0];
if (term.op() == QLatin1Char('=')) {
if (term.propertyName() == JsonDbString::kTypeStr) {
mKeyedNotifications.remove(parsedQuery.termValue(term).toString(), notification);
} else if (term.propertyName() == JsonDbString::kUuidStr) {
QString objectType = parsedQuery.termValue(term).toString();
mKeyedNotifications.remove(objectType, notification);
}
}
}
}
mKeyedNotifications.remove(QStringLiteral("__generic_notification__"), notification);
}
void JsonDbEphemeralPartition::objectsUpdated(const JsonDbUpdateList &changes)
{
foreach (const JsonDbUpdate &updated, changes) {
JsonDbObject oldObject = updated.oldObject;
JsonDbObject object = updated.newObject;
JsonDbNotification::Action action = updated.action;
QString oldObjectType = oldObject.type();
QString objectType = object.type();
QStringList notificationKeys;
if (!oldObjectType.isEmpty() || !objectType.isEmpty()) {
notificationKeys << objectType;
if (!oldObjectType.isEmpty() && objectType.compare(oldObjectType))
notificationKeys << oldObjectType;
if (object.contains(JsonDbString::kUuidStr))
notificationKeys << object.value(JsonDbString::kUuidStr).toString();
notificationKeys << QStringLiteral("__generic_notification__");
QHash<QString, JsonDbObject> objectCache;
for (int i = 0; i < notificationKeys.size(); i++) {
QString key = notificationKeys[i];
for (QMultiHash<QString, QPointer<JsonDbNotification> >::const_iterator it = mKeyedNotifications.find(key);
(it != mKeyedNotifications.end()) && (it.key() == key);
++it) {
JsonDbNotification *n = it.value();
if (n)
n->notifyIfMatches(0, oldObject, object, action, 0);
}
}
}
}
}
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