org.eclipse.linuxtools.lttng.ui/stubs/org/eclipse/linuxtools/lttng/stubs/LTTngEventStreamStub.java

   1 /*******************************************************************************
   2  * Copyright (c) 2009 Ericsson
   3  *
   4  * All rights reserved. This program and the accompanying materials are
   5  * made available under the terms of the Eclipse Public License v1.0 which
   6  * accompanies this distribution, and is available at
   7  * http://www.eclipse.org/legal/epl-v10.html
   8  *
   9  * Contributors:
  10  *   Francois Chouinard (fchouinard@gmail.com) - Initial API and implementation
  11  *******************************************************************************/
  12
  13 package org.eclipse.linuxtools.lttng.stubs;
  14
  15 import java.io.FileNotFoundException;
  16 import java.io.IOException;
  17 import java.io.RandomAccessFile;
  18 import java.util.Map;
  19
  20 import org.eclipse.linuxtools.tmf.trace.ITmfEventParser;
  21 import org.eclipse.linuxtools.tmf.trace.TmfTrace;
  22
  23 /**
  24  * <b><u>TmfEventStreamStub</u></b>
  25  * <p>
  26  * TODO: Implement me. Please.
  27  */
  28 public class LTTngEventStreamStub extends TmfTrace {
  29
  30     // ========================================================================
  31     // Attributes
  32     // ========================================================================
  33
  34     // The actual stream
  35     private final RandomAccessFile fStream;
  36
  37     // ========================================================================
  38     // Constructors
  39     // ========================================================================
  40
  41     /**
  42      * @param filename
  43      * @param parser
  44      * @throws FileNotFoundException
  45      */
  46     public LTTngEventStreamStub(String filename, ITmfEventParser parser) throws FileNotFoundException {
  47         this(filename, parser, DEFAULT_CACHE_SIZE);
  48     }
  49
  50     /**
  51      * @param filename
  52      * @param parser
  53      * @param cacheSize
  54      * @throws FileNotFoundException
  55      */
  56     public LTTngEventStreamStub(String filename, ITmfEventParser parser, int cacheSize) throws FileNotFoundException {
  57         super(filename, parser, cacheSize);
  58         fStream = new RandomAccessFile(filename, "r");
  59     }
  60
  61     // ========================================================================
  62     // Accessors
  63     // ========================================================================
  64
  65     public RandomAccessFile getStream() {
  66         return fStream;
  67     }
  68
  69     // ========================================================================
  70     // Operators
  71     // ========================================================================
  72
  73     /* (non-Javadoc)
  74      * @see org.eclipse.linuxtools.tmf.eventlog.ITmfStreamLocator#seekLocation(java.lang.Object)
  75      */
  76     public StreamContext seekLocation(Object location) {
  77         StreamContext context = null;
  78         try {
  79             fStream.seek((location != null) ? (Long) location : 0);
  80             context = new StreamContext(getCurrentLocation(), 0);
  81         } catch (IOException e) {
  82             // TODO Auto-generated catch block
  83             e.printStackTrace();
  84         }
  85         return context;
  86     }
  87
  88     /* (non-Javadoc)
  89      * @see org.eclipse.linuxtools.tmf.eventlog.ITmfStreamLocator#getCurrentLocation()
  90      */
  91     public Object getCurrentLocation() {
  92         try {
  93             return new Long(fStream.getFilePointer());
  94         } catch (IOException e) {
  95             // TODO Auto-generated catch block
  96             e.printStackTrace();
  97         }
  98         return null;
  99     }
 100
 101     // ========================================================================
 102     // Helper functions
 103     // ========================================================================
 104
 105     /* (non-Javadoc)
 106      * @see org.eclipse.linuxtools.tmf.eventlog.ITmfEventStream#getAttributes()
 107      */
 108     public Map<String, Object> getAttributes() {
 109         // TODO Auto-generated method stub
 110         return null;
 111     }
 112
 113 }