org.eclipse.linuxtools.tmf.tests/stubs/org/eclipse/linuxtools/tmf/trace/TmfEventStreamStub.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 - Initial API and implementation
  11  *******************************************************************************/
  12
  13 package org.eclipse.linuxtools.tmf.trace;
  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.stream.TmfEventStream;
  21 import org.eclipse.linuxtools.tmf.stream.ITmfEventParser;
  22
  23 /**
  24  * <b><u>TmfEventStreamStub</u></b>
  25  * <p>
  26  * TODO: Implement me. Please.
  27  */
  28 public class TmfEventStreamStub extends TmfEventStream {
  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 TmfEventStreamStub(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 TmfEventStreamStub(String filename, ITmfEventParser parser, int cacheSize) throws FileNotFoundException {
  57         super(filename, parser, cacheSize);
  58         fStream = new RandomAccessFile(filename, "r");
  59         indexStream(true);
  60     }
  61
  62     // ========================================================================
  63     // Accessors
  64     // ========================================================================
  65
  66     public RandomAccessFile getStream() {
  67         return fStream;
  68     }
  69
  70     // ========================================================================
  71     // Operators
  72     // ========================================================================
  73
  74     /* (non-Javadoc)
  75      * @see org.eclipse.linuxtools.tmf.eventlog.ITmfStreamLocator#seekLocation(java.lang.Object)
  76      */
  77     public StreamContext seekLocation(Object location) {
  78         StreamContext context = null;
  79         try {
  80                         fStream.seek((location != null) ? (Long) location : 0);
  81                         context = new StreamContext(getCurrentLocation(), 0);
  82                 } catch (IOException e) {
  83                         // TODO Auto-generated catch block
  84                         e.printStackTrace();
  85                 }
  86                 return context;
  87     }
  88
  89     /* (non-Javadoc)
  90      * @see org.eclipse.linuxtools.tmf.eventlog.ITmfStreamLocator#getCurrentLocation()
  91      */
  92     public Object getCurrentLocation() {
  93         try {
  94             return new Long(fStream.getFilePointer());
  95         } catch (IOException e) {
  96             // TODO Auto-generated catch block
  97             e.printStackTrace();
  98         }
  99         return null;
 100     }
 101
 102     // ========================================================================
 103     // Helper functions
 104     // ========================================================================
 105
 106     /* (non-Javadoc)
 107      * @see org.eclipse.linuxtools.tmf.eventlog.ITmfEventStream#getAttributes()
 108      */
 109     public Map<String, Object> getAttributes() {
 110         // TODO Auto-generated method stub
 111         return null;
 112     }
 113
 114 }