org.eclipse.linuxtools.tmf.ui/src/org/eclipse/linuxtools/tmf/ui/views/histogram/HistogramRequest.java

   1 /*******************************************************************************
   2  * Copyright (c) 2009, 2011, 2012 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  *   William Bourque - Initial API and implementation
  11  *   Yuriy Vashchuk - Heritage correction.
  12  *   Francois Chouinard - Cleanup and refactoring
  13  *   Francois Chouinard - Moved from LTTng to TMF
  14  *******************************************************************************/
  15
  16 package org.eclipse.linuxtools.tmf.ui.views.histogram;
  17
  18 import org.eclipse.linuxtools.tmf.core.event.ITmfEvent;
  19 import org.eclipse.linuxtools.tmf.core.event.TmfTimeRange;
  20 import org.eclipse.linuxtools.tmf.core.request.ITmfDataRequest;
  21 import org.eclipse.linuxtools.tmf.core.request.TmfEventRequest;
  22 import org.eclipse.linuxtools.tmf.core.trace.ITmfTrace;
  23
  24 /**
  25  * <b><u>HistogramRequest</u></b>
  26  * <p>
  27  */
  28 public class HistogramRequest extends TmfEventRequest<ITmfEvent> {
  29
  30     // ------------------------------------------------------------------------
  31     // Attributes
  32     // ------------------------------------------------------------------------
  33
  34     protected final HistogramDataModel fHistogram;
  35
  36     // ------------------------------------------------------------------------
  37     // Constructor
  38     // ------------------------------------------------------------------------
  39
  40     public HistogramRequest(HistogramDataModel histogram, TmfTimeRange range, int rank, int nbEvents, ITmfDataRequest.ExecutionType execType) {
  41         super(ITmfEvent.class, range, rank, nbEvents, ITmfTrace.DEFAULT_TRACE_CACHE_SIZE, execType);
  42         fHistogram = histogram;
  43     }
  44
  45     public HistogramRequest(HistogramDataModel histogram, TmfTimeRange range, ITmfDataRequest.ExecutionType execType) {
  46         this(histogram, range, 0, ALL_DATA, execType);
  47     }
  48
  49     public HistogramRequest(HistogramDataModel histogram, TmfTimeRange range, int rank, ITmfDataRequest.ExecutionType execType) {
  50         this(histogram, range, rank, ALL_DATA, execType);
  51     }
  52
  53     // ------------------------------------------------------------------------
  54     // TmfEventRequest
  55     // ------------------------------------------------------------------------
  56
  57     @Override
  58     public void handleData(ITmfEvent event) {
  59         super.handleData(event);
  60         if (event != null) {
  61             long timestamp = event.getTimestamp().getValue();
  62             fHistogram.countEvent(getNbRead(), timestamp);
  63         }
  64     }
  65
  66     @Override
  67     public void handleCompleted() {
  68         fHistogram.complete();
  69         super.handleCompleted();
  70     }
  71
  72     @Override
  73     public void handleCancel() {
  74         super.handleCancel();
  75     }
  76
  77 }