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/****************************************************************************
**
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtAddOn.JsonStream 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 "qjsonendpointmanager_p.h"
#include "qjsonendpoint.h"
#include "qjsonconnection.h"
QT_BEGIN_NAMESPACE_JSONSTREAM
static const QLatin1String kstrEndpointKey("endpoint");
/****************************************************************************/
/*!
\class QJsonEndpointManager
\brief The QJsonEndpointManager class maintains a list of endpoints
\internal
and determines which endpoint should be used to process a given JSON message.
*/
/*!
Constructs a \c QJsonEndpointManager object with \a parent.
*/
QJsonEndpointManager::QJsonEndpointManager(QJsonConnection *parent)
: QObject(parent), mInit(false), mEndpointPropertyName(kstrEndpointKey), mDefaultEndpoint(0)
{
}
/*!
Deletes the \c QJsonEndpointManager object.
*/
QJsonEndpointManager::~QJsonEndpointManager()
{
clear();
}
/*!
Returns the default endpoint. This endpoint is used when no matching named
endpoint could be found.
\sa endpoint()
*/
QJsonEndpoint *QJsonEndpointManager::defaultEndpoint()
{
QJsonEndpoint *endpoint;
endpoints();
if (mDefaultEndpoint) {
endpoint = mDefaultEndpoint;
}
else {
endpoint = new QJsonEndpoint();
QJsonConnection *connection = qobject_cast<QJsonConnection *>(parent());
if (connection) {
connection->addEndpoint(endpoint);
// XXX hack - i don't want the default endpoint in the endpoints list
mEndpoints.remove(QString::number((ulong)endpoint));
}
mDefaultEndpoint = endpoint;
}
return endpoint;
}
/*!
Add \a endpoint to the list
*/
void QJsonEndpointManager::addEndpoint(QJsonEndpoint *endpoint)
{
if (mEndpoints.key(endpoint).isEmpty()) {
mInit = false; // rehashing required
mEndpoints.insert(QString::number((ulong)endpoint), endpoint);
connect(endpoint, SIGNAL(nameChanged()), SLOT(handleNameChange()));
}
}
/*!
Remove \a endpoint from the list
*/
void QJsonEndpointManager::removeEndpoint(QJsonEndpoint *endpoint)
{
mEndpoints.remove(endpoint->name());
endpoint->setConnection(0);
}
/*!
Return (a copy of) the list of endpoints.
*/
QHash<QString, QJsonEndpoint*> & QJsonEndpointManager::endpoints()
{
if (!mInit) {
// rehash with real names
QList<QJsonEndpoint *> lst = mEndpoints.values();
mEndpoints.clear();
foreach (QJsonEndpoint *e, lst) {
mEndpoints.insert(e->name(), e);
}
mInit = true;
}
return mEndpoints;
}
/*!
Determines the endpoint that should be used to process \a message and returns it.
The endpoint is determined by retrieving the value of the property named in
endpointPropertyName() from \a message. If that value matches one of the
endpoints' \l{QJsonEndpoint::name()}{name()} properties, that endpoint is returned.
If no matching endpoint could be found, the defaultEndpoint() is returned.
*/
QJsonEndpoint *QJsonEndpointManager::endpoint(const QJsonObject &message)
{
return endpoints().value(message.value(mEndpointPropertyName).toString(), defaultEndpoint());
}
/*!
Clears the endpoint list.
*/
void QJsonEndpointManager::clear()
{
QList<QJsonEndpoint *> lst = mEndpoints.values();
foreach (QJsonEndpoint *endpoint, lst) {
endpoint->setConnection(0);
}
mEndpoints.clear();
}
void QJsonEndpointManager::handleNameChange()
{
mInit = false; // next call to endpoints() will rehash everything
}
/*! \property QJsonEndpointManager::endpointPropertyName
Property name that will be used to retrieve a value from a message to determine
what endpoint should be used to process that message.
\sa endpoint()
*/
#include "moc_qjsonendpointmanager_p.cpp"
QT_END_NAMESPACE_JSONSTREAM
|
