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diff --git a/bundles/org.simantics.databoard/src/org/simantics/databoard/util/binary/BinaryReadable.java b/bundles/org.simantics.databoard/src/org/simantics/databoard/util/binary/BinaryReadable.java
new file mode 100644
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+++ b/bundles/org.simantics.databoard/src/org/simantics/databoard/util/binary/BinaryReadable.java
@@ -0,0 +1,60 @@
+/*******************************************************************************
+ *  Copyright (c) 2010 Association for Decentralized Information Management in
+ *  Industry THTH ry.
+ *  All rights reserved. This program and the accompanying materials
+ *  are made available under the terms of the Eclipse Public License v1.0
+ *  which accompanies this distribution, and is available at
+ *  http://www.eclipse.org/legal/epl-v10.html
+ *
+ *  Contributors:
+ *      VTT Technical Research Centre of Finland - initial API and implementation
+ *******************************************************************************/
+package org.simantics.databoard.util.binary;
+
+import java.io.DataInput;
+import java.io.EOFException;
+import java.io.IOException;
+import java.nio.ByteBuffer;
+
+/**
+ * BinaryReadable is a readable stream of bytes.
+ * 
+ * Common interface for ByteBuffer, byte[], InputStream, RandomAccessFile.
+ * 
+ * @see ByteBufferReadable
+ * @see InputStreamReadable
+ * @author Toni Kalajainen (toni.kalajainen@vtt.fi)
+ */
+public interface BinaryReadable extends DataInput {
+
+	long skipBytes(long bytes) throws IOException;
+    
+    /**
+     * Read buf fully
+     * 
+     * @param buf
+     * @throws EOFException if this stream reaches the end before reading all
+     *         the bytes.
+     * @throws IOException if an I/O error occurs.
+     */
+    void readFully(ByteBuffer buf)
+    throws IOException;
+    
+    /**
+     * Read fully length bytes
+     * 
+     * @param buf
+     * @param length
+     * @throws EOFException  if this stream reaches the end before reading
+     *               all the bytes.
+     * @throws IOException   if an I/O error occurs.
+     */
+    void readFully(ByteBuffer buf, int length)
+    throws IOException;
+        
+	long length() throws IOException;
+    
+	long position() throws IOException;
+		
+}
+