org.eclipse.linuxtools.tmf.tests/stubs/org/eclipse/linuxtools/tmf/trace/TmfTraceStub.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.event.TmfEvent;
  21
  22 /**
  23  * <b><u>TmfTraceStub</u></b>
  24  * <p>
  25  * TODO: Implement me. Please.
  26  */
  27 public class TmfTraceStub extends TmfTrace {
  28
  29     // ========================================================================
  30     // Attributes
  31     // ========================================================================
  32
  33     // The actual stream
  34     private final RandomAccessFile fTrace;
  35
  36     // The associated event parser
  37     private final ITmfEventParser fParser;
  38
  39     // ========================================================================
  40     // Constructors
  41     // ========================================================================
  42
  43     /**
  44      * @param filename
  45      * @throws FileNotFoundException
  46      */
  47     public TmfTraceStub(String filename) throws FileNotFoundException {
  48         this(filename, DEFAULT_PAGE_SIZE);
  49     }
  50
  51     /**
  52      * @param filename
  53      * @param cacheSize
  54      * @throws FileNotFoundException
  55      */
  56     public TmfTraceStub(String filename, int cacheSize) throws FileNotFoundException {
  57         super(filename, cacheSize);
  58         fTrace = new RandomAccessFile(filename, "r");
  59         fParser = new TmfEventParserStub();
  60         indexStream();
  61     }
  62
  63     // ========================================================================
  64     // Accessors
  65     // ========================================================================
  66
  67     public RandomAccessFile getStream() {
  68         return fTrace;
  69     }
  70
  71     // ========================================================================
  72     // Operators
  73     // ========================================================================
  74
  75     /* (non-Javadoc)
  76      * @see org.eclipse.linuxtools.tmf.eventlog.ITmfStreamLocator#seekLocation(java.lang.Object)
  77      */
  78     public TmfTraceContext seekLocation(Object location) {
  79         TmfTraceContext context = null;
  80         try {
  81                         fTrace.seek((location != null) ? (Long) location : 0);
  82                         context = new TmfTraceContext(getCurrentLocation(), 0);
  83                 } catch (IOException e) {
  84                         // TODO Auto-generated catch block
  85                         e.printStackTrace();
  86                 }
  87                 return context;
  88     }
  89
  90     /* (non-Javadoc)
  91      * @see org.eclipse.linuxtools.tmf.eventlog.ITmfStreamLocator#getCurrentLocation()
  92      */
  93     public Object getCurrentLocation() {
  94         try {
  95             return new Long(fTrace.getFilePointer());
  96         } catch (IOException e) {
  97             // TODO Auto-generated catch block
  98             e.printStackTrace();
  99         }
 100         return null;
 101     }
 102
 103         /* (non-Javadoc)
 104          * @see org.eclipse.linuxtools.tmf.trace.TmfTrace#parseEvent()
 105          */
 106         public TmfEvent parseNextEvent() {
 107                 try {
 108                         TmfEvent event = fParser.getNextEvent(this);
 109                         return event;
 110                 }
 111                 catch (IOException e) {
 112                         e.printStackTrace();
 113                 }
 114                 return null;
 115         }
 116
 117     // ========================================================================
 118     // Helper functions
 119     // ========================================================================
 120
 121     /* (non-Javadoc)
 122      * @see org.eclipse.linuxtools.tmf.eventlog.ITmfEventStream#getAttributes()
 123      */
 124     public Map<String, Object> getAttributes() {
 125         // TODO Auto-generated method stub
 126         return null;
 127     }
 128
 129 }