org.eclipse.linuxtools.tmf.core.tests/stubs/org/eclipse/linuxtools/tmf/stubs/trace/TmfEventParserStub.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.stubs.trace;
  14
  15 import java.io.EOFException;
  16 import java.io.IOException;
  17 import java.io.RandomAccessFile;
  18 import java.util.Vector;
  19
  20 import org.eclipse.linuxtools.tmf.core.event.ITmfEventField;
  21 import org.eclipse.linuxtools.tmf.core.event.TmfEvent;
  22 import org.eclipse.linuxtools.tmf.core.event.TmfEventField;
  23 import org.eclipse.linuxtools.tmf.core.event.TmfEventType;
  24 import org.eclipse.linuxtools.tmf.core.event.TmfTimestamp;
  25 import org.eclipse.linuxtools.tmf.core.parser.ITmfEventParser;
  26 import org.eclipse.linuxtools.tmf.core.trace.ITmfTrace;
  27 import org.eclipse.linuxtools.tmf.core.trace.TmfContext;
  28 import org.eclipse.linuxtools.tmf.core.trace.TmfLocation;
  29
  30 /**
  31  * <b><u>TmfEventParserStub</u></b>
  32  * <p>
  33  * TODO: Implement me. Please.
  34  */
  35 @SuppressWarnings("nls")
  36 public class TmfEventParserStub implements ITmfEventParser {
  37
  38     // ------------------------------------------------------------------------
  39     // Attributes
  40     // ------------------------------------------------------------------------
  41
  42         private final int NB_TYPES = 10;
  43     private final TmfEventType[] fTypes;
  44
  45     // ------------------------------------------------------------------------
  46     // Constructors
  47     // ------------------------------------------------------------------------
  48
  49     public TmfEventParserStub() {
  50         fTypes = new TmfEventType[NB_TYPES];
  51         for (int i = 0; i < NB_TYPES; i++) {
  52                 Vector<String> fields = new Vector<String>();
  53                 for (int j = 1; j <= i; j++) {
  54                     String field = "Fmt-" + i + "-Fld-" + j;
  55                     fields.add(field);
  56                 }
  57                 String[] fieldArray = new String[i];
  58                 ITmfEventField rootField = TmfEventField.makeRoot(fields.toArray(fieldArray));
  59                 fTypes[i] = new TmfEventType("UnitTest", "Type-" + i, rootField);
  60         }
  61     }
  62
  63     // ------------------------------------------------------------------------
  64     // Operators
  65     // ------------------------------------------------------------------------
  66
  67     static final String typePrefix = "Type-";
  68     @Override
  69         @SuppressWarnings("unchecked")
  70         public TmfEvent parseNextEvent(ITmfTrace<?> eventStream, TmfContext context) throws IOException {
  71
  72         if (! (eventStream instanceof TmfTraceStub)) {
  73             return null;
  74         }
  75
  76         // Highly inefficient...
  77         RandomAccessFile stream = ((TmfTraceStub) eventStream).getStream();
  78         String name = eventStream.getName();
  79         name = name.substring(name.lastIndexOf('/') + 1);
  80
  81         // no need to use synchronized since it's already cover by the calling method
  82
  83         long location = 0;
  84         if (context != null)
  85             location = ((TmfLocation<Long>) (context.getLocation())).getLocation();
  86         stream.seek(location);
  87
  88         try {
  89             long ts        = stream.readLong();
  90             String source  = stream.readUTF();
  91             String type    = stream.readUTF();
  92             @SuppressWarnings("unused")
  93             int reference  = stream.readInt();
  94             int typeIndex  = Integer.parseInt(type.substring(typePrefix.length()));
  95             String[] fields = new String[typeIndex];
  96             for (int i = 0; i < typeIndex; i++) {
  97                 fields[i] = stream.readUTF();
  98             }
  99
 100             String content = "[";
 101             if (typeIndex > 0) {
 102                 content += fields[0];
 103             }
 104             for (int i = 1; i < typeIndex; i++) {
 105                 content += ", " + fields[i];
 106             }
 107             content += "]";
 108
 109             TmfEventField root = new TmfEventField(ITmfEventField.ROOT_ID, content);
 110             TmfEvent event = new TmfEvent(eventStream,
 111                     new TmfTimestamp(ts, (byte) -3, 0),     // millisecs
 112                     source, fTypes[typeIndex], root, name);
 113             event.setContent(root);
 114             return event;
 115         } catch (EOFException e) {
 116         }
 117         return null;
 118     }
 119
 120 }