--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/contentstorage/caclient/src/cahandlerproxy.cpp Tue Aug 31 15:30:51 2010 +0300
@@ -0,0 +1,94 @@
+/*
+ * Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
+ * All rights reserved.
+ * This component and the accompanying materials are made available
+ * under the terms of "Eclipse Public License v1.0"
+ * which accompanies this distribution, and is available
+ * at the URL "http://www.eclipse.org/legal/epl-v10.html".
+ *
+ * Initial Contributors:
+ * Nokia Corporation - initial contribution.
+ *
+ * Contributors:
+ *
+ * Description:
+ *
+ */
+
+#include <caentry.h>
+
+#include "cahandler.h"
+#include "cahandlerproxy.h"
+#include "cahandlerloader.h"
+#include "caobjectadapter.h"
+
+/*!
+ \class CaHandlerProxy
+ \ingroup
+ \brief Forwards execute request to an implemenation provided by specific handler loader.
+
+ \sa CaHandlerLoader
+*/
+
+/*!
+ Destructor.
+*/
+CaHandlerProxy::~CaHandlerProxy()
+{
+}
+
+
+/*!
+ Constructs handler proxy.
+ \param loader Provides handler implementations. It has to be pointer to a valid object.
+*/
+CaHandlerProxy::CaHandlerProxy(const QSharedPointer<CaHandlerLoader> &loader):
+ mLoader(loader)
+{
+ Q_ASSERT(!mLoader.isNull());
+}
+
+/*!
+ Forwards execute request to an appropriate handler if found otherwise ignores the request.
+ \param entry Subject for the requested command.
+ \param commandName Name of the command to be executed.
+ \retval KErrNone on succes, error code otherwise.
+ \sa e32err.h for KErrNone definition.
+*/
+int CaHandlerProxy::execute(const CaEntry &entry, const QString &commandName)
+{
+ CaHandler *const handler = getHandler(entry, commandName);
+ int result = -1;
+
+ if (handler) {
+ result = handler->execute(entry, commandName);
+ }
+ return result;
+}
+
+/*!
+ Looks for handler implementation in local cache or if not found, request it from
+ handler loader.
+ \param entry The entry being a subject for the requested command.
+ \param commandName Name of the command to be executed.
+ \return Pointer to a handler instance if available, NULL otherwise.
+*/
+CaHandler *CaHandlerProxy::getHandler(const CaEntry &entry,
+ const QString &commandName)
+{
+ CaHandler *implementation(0);
+
+ const QString entryTypeName(entry.entryTypeName());
+
+ const ImplementationMapIterator it(
+ mImplementationMap.find(entryTypeName));
+
+ if (it != mImplementationMap.end()) {
+ implementation = it->data();
+ } else {
+ implementation = mLoader->loadHandler(entryTypeName, commandName);
+ mImplementationMap[entryTypeName] = QSharedPointer<CaHandler>(implementation);
+ }
+
+ return implementation;
+}