--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/trace/traceviewer/com.nokia.traceviewer/src/com/nokia/traceviewer/engine/InternalFileHandler.java	Wed Jun 23 14:49:59 2010 +0300
@@ -0,0 +1,112 @@
+/*
+ * Copyright (c) 2007-2010 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:
+ *
+ * Internal Trace File Handler
+ *
+ */
+package com.nokia.traceviewer.engine;
+
+import java.io.FileNotFoundException;
+import java.io.IOException;
+import java.io.RandomAccessFile;
+import java.nio.channels.FileChannel;
+
+/**
+ * Internal Trace File Handler
+ * 
+ */
+final class InternalFileHandler implements TraceFileHandler {
+
+	/**
+	 * File path
+	 */
+	private final String filePath;
+
+	/**
+	 * Trace File
+	 */
+	private RandomAccessFile file;
+
+	/**
+	 * Constructor
+	 * 
+	 * @param filePath
+	 *            trace file path
+	 */
+	public InternalFileHandler(String filePath) {
+		this.filePath = filePath;
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * 
+	 * @see com.nokia.traceviewer.engine.TraceFileHandler#clearFile()
+	 */
+	public void clearFile() {
+		if (file != null) {
+			try {
+				file.setLength(0);
+			} catch (IOException e) {
+				e.printStackTrace();
+			}
+		}
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * 
+	 * @see com.nokia.traceviewer.engine.TraceFileHandler#openFile()
+	 */
+	public void openFile() {
+		if (filePath != null) {
+			// Create new RandomAccessFile
+			try {
+				if (getChannel() == null || !getChannel().isOpen()) {
+					this.file = new RandomAccessFile(filePath, "rw"); //$NON-NLS-1$
+				}
+			} catch (FileNotFoundException e) {
+				e.printStackTrace();
+			}
+		}
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * 
+	 * @see com.nokia.traceviewer.engine.TraceFileHandler#closeFile()
+	 */
+	public void closeFile() {
+		if (file != null) {
+			try {
+				file.close();
+			} catch (IOException e) {
+				e.printStackTrace();
+			}
+		}
+	}
+
+	/**
+	 * Gets file channel
+	 * 
+	 * @return file channel
+	 */
+	private FileChannel getChannel() {
+		FileChannel channel = null;
+		if (file != null) {
+			channel = file.getChannel();
+		}
+		return channel;
+	}
+}