javauis/mmapi_qt/baseline/javasrc/com/nokia/microedition/media/protocol/ProtocolFactory.java
changeset 23 98ccebc37403
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/javauis/mmapi_qt/baseline/javasrc/com/nokia/microedition/media/protocol/ProtocolFactory.java	Fri May 14 15:47:24 2010 +0300
@@ -0,0 +1,82 @@
+/*
+* Copyright (c) 2005 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:
+*
+*/
+
+
+package com.nokia.microedition.media.protocol;
+
+import com.nokia.microedition.media.InternalPlayer;
+import com.nokia.microedition.media.Locator;
+import javax.microedition.media.MediaException;
+
+/**
+ * Factory for creating the Protocols
+ */
+public class ProtocolFactory
+{
+    private Protocol iConnectorProtocol = null;
+
+    public static final String PROTOCOL_CLASS_NAME = ".Protocol";
+    public static final String PROTOCOL_BASE_PACKAGE =
+        "com.nokia.microedition.media.protocol.";
+
+    /**
+     * Constructor
+     */
+    public ProtocolFactory()
+    {
+        iConnectorProtocol = new ConnectorProtocol();
+    }
+
+    /**
+     * Factory method for creating player from locator
+     * Tries to load assosiated <code>Protocol</code> first, if this fails
+     * then we try to create player by using <code>Connector</code>
+     * @param aLocator Media locator
+     * @return Player according to locator or null if cannot create
+     */
+    public InternalPlayer createPlayer(Locator aLocator)
+    throws java.io.IOException,
+                MediaException,
+                java.lang.SecurityException
+    {
+        InternalPlayer player = null;
+        try
+        {
+            Class protocolClass =
+                Class.forName(PROTOCOL_BASE_PACKAGE +
+                              aLocator.getProtocol() + PROTOCOL_CLASS_NAME);
+            Protocol protocol = (Protocol)protocolClass.newInstance();
+            player = protocol.createPlayer(aLocator);
+        }
+        catch (InstantiationException ie)
+        {
+            throw new MediaException("Instantiation failed: " + ie);
+        }
+        catch (IllegalAccessException iae)
+        {
+            throw new MediaException("Illegal access: " + iae);
+        }
+        catch (ClassNotFoundException cnfe)
+        {
+            // we did not find specified Protocol, trying to create player
+            // with connector
+            player = iConnectorProtocol.createPlayer(aLocator);
+        }
+        return player;
+    }
+}
+