tmf/org.eclipse.tracecompass.tmf.analysis.xml.ui/src/org/eclipse/tracecompass/internal/tmf/analysis/xml/ui/views/timegraph/XmlTimeGraphView.java

   1 /*******************************************************************************
   2  * Copyright (c) 2014, 2016 École Polytechnique de Montréal
   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  *   Florian Wininger - Initial API and implementation
  11  *   Geneviève Bastien - Review of the initial implementation
  12  *******************************************************************************/
  13
  14 package org.eclipse.tracecompass.internal.tmf.analysis.xml.ui.views.timegraph;
  15
  16 import static org.eclipse.tracecompass.common.core.NonNullUtils.checkNotNull;
  17
  18 import java.util.ArrayList;
  19 import java.util.Collections;
  20 import java.util.Comparator;
  21 import java.util.HashMap;
  22 import java.util.HashSet;
  23 import java.util.LinkedList;
  24 import java.util.List;
  25 import java.util.Map;
  26 import java.util.Set;
  27 import java.util.TreeSet;
  28
  29 import org.eclipse.core.runtime.IProgressMonitor;
  30 import org.eclipse.core.runtime.IStatus;
  31 import org.eclipse.jdt.annotation.NonNull;
  32 import org.eclipse.jdt.annotation.Nullable;
  33 import org.eclipse.jface.util.IPropertyChangeListener;
  34 import org.eclipse.jface.util.PropertyChangeEvent;
  35 import org.eclipse.swt.widgets.Composite;
  36 import org.eclipse.swt.widgets.Display;
  37 import org.eclipse.tracecompass.common.core.NonNullUtils;
  38 import org.eclipse.tracecompass.internal.tmf.analysis.xml.core.model.ITmfXmlModelFactory;
  39 import org.eclipse.tracecompass.internal.tmf.analysis.xml.core.model.ITmfXmlStateAttribute;
  40 import org.eclipse.tracecompass.internal.tmf.analysis.xml.core.model.readonly.TmfXmlReadOnlyModelFactory;
  41 import org.eclipse.tracecompass.internal.tmf.analysis.xml.core.module.IXmlStateSystemContainer;
  42 import org.eclipse.tracecompass.internal.tmf.analysis.xml.core.module.XmlUtils;
  43 import org.eclipse.tracecompass.internal.tmf.analysis.xml.core.stateprovider.TmfXmlStrings;
  44 import org.eclipse.tracecompass.internal.tmf.analysis.xml.ui.Activator;
  45 import org.eclipse.tracecompass.internal.tmf.analysis.xml.ui.TmfXmlUiStrings;
  46 import org.eclipse.tracecompass.internal.tmf.analysis.xml.ui.views.XmlViewInfo;
  47 import org.eclipse.tracecompass.internal.tmf.analysis.xml.ui.views.timegraph.XmlEntry.EntryDisplayType;
  48 import org.eclipse.tracecompass.statesystem.core.ITmfStateSystem;
  49 import org.eclipse.tracecompass.statesystem.core.StateSystemUtils;
  50 import org.eclipse.tracecompass.statesystem.core.exceptions.AttributeNotFoundException;
  51 import org.eclipse.tracecompass.statesystem.core.exceptions.StateSystemDisposedException;
  52 import org.eclipse.tracecompass.statesystem.core.exceptions.StateValueTypeException;
  53 import org.eclipse.tracecompass.statesystem.core.exceptions.TimeRangeException;
  54 import org.eclipse.tracecompass.statesystem.core.interval.ITmfStateInterval;
  55 import org.eclipse.tracecompass.statesystem.core.statevalue.ITmfStateValue;
  56 import org.eclipse.tracecompass.tmf.core.statesystem.ITmfAnalysisModuleWithStateSystems;
  57 import org.eclipse.tracecompass.tmf.core.trace.ITmfTrace;
  58 import org.eclipse.tracecompass.tmf.core.trace.TmfTraceUtils;
  59 import org.eclipse.tracecompass.tmf.ui.views.timegraph.AbstractTimeGraphView;
  60 import org.eclipse.tracecompass.tmf.ui.widgets.timegraph.ITimeGraphPresentationProvider2;
  61 import org.eclipse.tracecompass.tmf.ui.widgets.timegraph.model.ILinkEvent;
  62 import org.eclipse.tracecompass.tmf.ui.widgets.timegraph.model.ITimeEvent;
  63 import org.eclipse.tracecompass.tmf.ui.widgets.timegraph.model.ITimeGraphEntry;
  64 import org.eclipse.tracecompass.tmf.ui.widgets.timegraph.model.NullTimeEvent;
  65 import org.eclipse.tracecompass.tmf.ui.widgets.timegraph.model.TimeEvent;
  66 import org.eclipse.tracecompass.tmf.ui.widgets.timegraph.model.TimeGraphEntry;
  67 import org.w3c.dom.Element;
  68
  69 import com.google.common.collect.Iterables;
  70
  71 /**
  72  * This view displays state system data in a time graph view. It uses an XML
  73  * {@link TmfXmlUiStrings#TIME_GRAPH_VIEW} element from an XML file. This
  74  * element defines which entries from the state system will be shown and also
  75  * gives additional information on the presentation of the view (states, colors,
  76  * etc)
  77  *
  78  * @author Florian Wininger
  79  */
  80 public class XmlTimeGraphView extends AbstractTimeGraphView {
  81
  82     /** View ID. */
  83     public static final @NonNull String ID = "org.eclipse.linuxtools.tmf.analysis.xml.ui.views.timegraph"; //$NON-NLS-1$
  84
  85     private static final String[] DEFAULT_COLUMN_NAMES = new String[] {
  86             Messages.XmlTimeGraphView_ColumnName,
  87             Messages.XmlTimeGraphView_ColumnId,
  88             Messages.XmlTimeGraphView_ColumnParentId,
  89     };
  90
  91     private static final String[] DEFAULT_FILTER_COLUMN_NAMES = new String[] {
  92             Messages.XmlTimeGraphView_ColumnName,
  93             Messages.XmlTimeGraphView_ColumnId
  94     };
  95
  96     /** The relative weight of the sash */
  97     private static final int[] fWeight = { 1, 2 };
  98
  99     private static final String EMPTY_STRING = ""; //$NON-NLS-1$
 100     private static final @NonNull String SPLIT_STRING = "/"; //$NON-NLS-1$
 101
 102     private final @NonNull XmlViewInfo fViewInfo = new XmlViewInfo(ID);
 103     private final ITmfXmlModelFactory fFactory;
 104     private final Map<String, Integer> fStringValueMap = new HashMap<>();
 105
 106     // ------------------------------------------------------------------------
 107     // Constructors
 108     // ------------------------------------------------------------------------
 109
 110     /**
 111      * Default constructor
 112      */
 113     public XmlTimeGraphView() {
 114         super(ID, new XmlPresentationProvider());
 115         setWeight(fWeight);
 116         setTreeColumns(DEFAULT_COLUMN_NAMES);
 117         setTreeLabelProvider(new XmlTreeLabelProvider());
 118         setFilterColumns(DEFAULT_FILTER_COLUMN_NAMES);
 119         setFilterLabelProvider(new XmlTreeLabelProvider());
 120         setEntryComparator(new XmlEntryComparator());
 121         this.addPartPropertyListener(new IPropertyChangeListener() {
 122             @Override
 123             public void propertyChange(PropertyChangeEvent event) {
 124                 if (event.getProperty().equals(TmfXmlUiStrings.XML_OUTPUT_DATA)) {
 125                     Object newValue = event.getNewValue();
 126                     if (newValue instanceof String) {
 127                         String data = (String) newValue;
 128                         fViewInfo.setViewData(data);
 129                         loadNewXmlView();
 130                     }
 131                 }
 132             }
 133         });
 134         fFactory = TmfXmlReadOnlyModelFactory.getInstance();
 135     }
 136
 137     @Override
 138     public void createPartControl(Composite parent) {
 139         super.createPartControl(parent);
 140         fViewInfo.setName(NonNullUtils.checkNotNull(getViewSite().getSecondaryId()));
 141     }
 142
 143     private void loadNewXmlView() {
 144         rebuild();
 145     }
 146
 147     private void setViewTitle(final String title) {
 148         Display.getDefault().asyncExec(new Runnable() {
 149             @Override
 150             public void run() {
 151                 setPartName(title);
 152             }
 153         });
 154
 155     }
 156
 157     @Override
 158     protected String getNextText() {
 159         return Messages.XmlTimeGraphView_NextText;
 160     }
 161
 162     @Override
 163     protected String getNextTooltip() {
 164         return Messages.XmlTimeGraphView_NextTooltip;
 165     }
 166
 167     @Override
 168     protected String getPrevText() {
 169         return Messages.XmlTimeGraphView_PreviousText;
 170     }
 171
 172     @Override
 173     protected String getPrevTooltip() {
 174         return Messages.XmlTimeGraphView_PreviousInterval;
 175     }
 176
 177     /**
 178      * Default label provider, it shows name, id and parent columns
 179      *
 180      * TODO: There should be a way to define columns in the XML
 181      */
 182     private static class XmlTreeLabelProvider extends TreeLabelProvider {
 183
 184         @Override
 185         public String getColumnText(Object element, int columnIndex) {
 186             XmlEntry entry = (XmlEntry) element;
 187
 188             if (DEFAULT_COLUMN_NAMES[columnIndex].equals(Messages.XmlTimeGraphView_ColumnName)) {
 189                 return entry.getName();
 190             } else if (DEFAULT_COLUMN_NAMES[columnIndex].equals(Messages.XmlTimeGraphView_ColumnId)) {
 191                 return entry.getId();
 192             } else if (DEFAULT_COLUMN_NAMES[columnIndex].equals(Messages.XmlTimeGraphView_ColumnParentId)) {
 193                 return entry.getParentId();
 194             }
 195             return EMPTY_STRING;
 196         }
 197
 198     }
 199
 200     private static class XmlEntryComparator implements Comparator<ITimeGraphEntry> {
 201
 202         @Override
 203         public int compare(ITimeGraphEntry o1, ITimeGraphEntry o2) {
 204
 205             int result = 0;
 206
 207             if ((o1 instanceof XmlEntry) && (o2 instanceof XmlEntry)) {
 208                 XmlEntry entry1 = (XmlEntry) o1;
 209                 XmlEntry entry2 = (XmlEntry) o2;
 210                 result = entry1.getTrace().getStartTime().compareTo(entry2.getTrace().getStartTime());
 211                 if (result == 0) {
 212                     result = entry1.getTrace().getName().compareTo(entry2.getTrace().getName());
 213                 }
 214                 if (result == 0) {
 215                     result = entry1.getName().compareTo(entry2.getName());
 216                 }
 217             }
 218
 219             if (result == 0) {
 220                 result = o1.getStartTime() < o2.getStartTime() ? -1 : o1.getStartTime() > o2.getStartTime() ? 1 : 0;
 221             }
 222
 223             return result;
 224         }
 225     }
 226
 227     // ------------------------------------------------------------------------
 228     // Internal
 229     // ------------------------------------------------------------------------
 230
 231     @Override
 232     protected void buildEntryList(ITmfTrace trace, ITmfTrace parentTrace, IProgressMonitor monitor) {
 233
 234         if (!fViewInfo.waitForInitialization()) {
 235             return;
 236         }
 237         /*
 238          * Get the view element from the XML file. If the element can't be
 239          * found, return.
 240          */
 241         Element viewElement = fViewInfo.getViewElement(TmfXmlUiStrings.TIME_GRAPH_VIEW);
 242         if (viewElement == null) {
 243             return;
 244         }
 245         ITimeGraphPresentationProvider2 pres = this.getPresentationProvider();
 246         if (pres instanceof XmlPresentationProvider) {
 247             /*
 248              * TODO: Each entry of a line could have their own states/color.
 249              * That will require an update to the presentation provider
 250              */
 251             ((XmlPresentationProvider) pres).loadNewStates(viewElement);
 252         }
 253
 254         String title = fViewInfo.getViewTitle(viewElement);
 255         if (title == null) {
 256             title = Messages.XmlTimeGraphView_DefaultTitle;
 257         }
 258         setViewTitle(title);
 259
 260         // Empty the additional state values
 261         fStringValueMap.clear();
 262
 263         Set<String> analysisIds = fViewInfo.getViewAnalysisIds(viewElement);
 264
 265         List<Element> entries = XmlUtils.getChildElements(viewElement, TmfXmlUiStrings.ENTRY_ELEMENT);
 266         Set<XmlEntry> entryList = new TreeSet<>(getEntryComparator());
 267         if (monitor.isCanceled()) {
 268             return;
 269         }
 270
 271         Set<@NonNull ITmfAnalysisModuleWithStateSystems> stateSystemModules = new HashSet<>();
 272         if (analysisIds.isEmpty()) {
 273             /*
 274              * No analysis specified, take all state system analysis modules
 275              */
 276             Iterables.addAll(stateSystemModules, TmfTraceUtils.getAnalysisModulesOfClass(trace, ITmfAnalysisModuleWithStateSystems.class));
 277         } else {
 278             for (String moduleId : analysisIds) {
 279                 moduleId = checkNotNull(moduleId);
 280                 ITmfAnalysisModuleWithStateSystems module = TmfTraceUtils.getAnalysisModuleOfClass(trace, ITmfAnalysisModuleWithStateSystems.class, moduleId);
 281                 if (module != null) {
 282                     stateSystemModules.add(module);
 283                 }
 284             }
 285         }
 286
 287         for (ITmfAnalysisModuleWithStateSystems module : stateSystemModules) {
 288             IStatus status = module.schedule();
 289             if (!status.isOK()) {
 290                 return;
 291             }
 292             if (!module.waitForInitialization()) {
 293                 return;
 294             }
 295             for (ITmfStateSystem ssq : module.getStateSystems()) {
 296                 ssq.waitUntilBuilt();
 297
 298                 long startTime = ssq.getStartTime();
 299                 long endTime = ssq.getCurrentEndTime();
 300                 XmlEntry groupEntry = new XmlEntry(-1, trace, trace.getName(), ssq);
 301                 entryList.add(groupEntry);
 302                 setStartTime(Math.min(getStartTime(), startTime));
 303                 setEndTime(Math.max(getEndTime(), endTime));
 304
 305                 /* Add children entry of this entry for each line */
 306                 for (Element entry : entries) {
 307                     buildEntry(entry, groupEntry, -1);
 308                 }
 309             }
 310         }
 311
 312         addToEntryList(parentTrace, new ArrayList<TimeGraphEntry>(entryList));
 313
 314         if (parentTrace.equals(getTrace())) {
 315             refresh();
 316         }
 317         for (XmlEntry traceEntry : entryList) {
 318             if (monitor.isCanceled()) {
 319                 return;
 320             }
 321             long startTime = traceEntry.getStateSystem().getStartTime();
 322             long endTime = traceEntry.getStateSystem().getCurrentEndTime() + 1;
 323             buildStatusEvent(traceEntry, monitor, startTime, endTime);
 324         }
 325     }
 326
 327     private void buildEntry(Element entryElement, XmlEntry parentEntry, int baseQuark) {
 328         /* Get the attribute string to display */
 329         String path = entryElement.getAttribute(TmfXmlUiStrings.PATH);
 330         if (path.isEmpty()) {
 331             path = TmfXmlStrings.WILDCARD;
 332         }
 333
 334         /*
 335          * Make sure the XML element has either a display attribute or entries,
 336          * otherwise issue a warning
 337          */
 338
 339         List<Element> displayElements = XmlUtils.getChildElements(entryElement, TmfXmlUiStrings.DISPLAY_ELEMENT);
 340         List<Element> entryElements = XmlUtils.getChildElements(entryElement, TmfXmlUiStrings.ENTRY_ELEMENT);
 341
 342         if (displayElements.isEmpty() && entryElements.isEmpty()) {
 343             Activator.logWarning(String.format("XML view: entry for %s should have either a display element or entry elements", path)); //$NON-NLS-1$
 344             return;
 345         }
 346
 347         ITmfStateSystem ss = parentEntry.getStateSystem();
 348
 349         /* Get the list of quarks to process with this path */
 350         String[] paths = path.split(SPLIT_STRING);
 351         int i = 0;
 352         List<Integer> quarks = Collections.singletonList(baseQuark);
 353
 354         while (i < paths.length) {
 355             List<Integer> subQuarks = new LinkedList<>();
 356             /* Replace * by .* to have a regex string */
 357             String name = paths[i].replaceAll("\\*", ".*"); //$NON-NLS-1$ //$NON-NLS-2$
 358             for (int relativeQuark : quarks) {
 359                 for (int quark : ss.getSubAttributes(relativeQuark, false, name)) {
 360                     subQuarks.add(quark);
 361                 }
 362             }
 363             quarks = subQuarks;
 364             i++;
 365         }
 366
 367         /* Process each quark */
 368         XmlEntry currentEntry = parentEntry;
 369         Element displayElement = null;
 370         Map<String, XmlEntry> entryMap = new HashMap<>();
 371         if (!displayElements.isEmpty()) {
 372             displayElement = displayElements.get(0);
 373         }
 374         for (int quark : quarks) {
 375             currentEntry = parentEntry;
 376             /* Process the current entry, if specified */
 377             if (displayElement != null) {
 378                 currentEntry = processEntry(entryElement, displayElement, parentEntry, quark, ss);
 379                 entryMap.put(currentEntry.getId(), currentEntry);
 380             }
 381             /* Process the children entry of this entry */
 382             for (Element subEntryEl : entryElements) {
 383                 buildEntry(subEntryEl, currentEntry, quark);
 384             }
 385         }
 386         if (!entryMap.isEmpty()) {
 387             buildTree(entryMap, parentEntry);
 388         }
 389     }
 390
 391     private XmlEntry processEntry(@NonNull Element entryElement, @NonNull Element displayEl,
 392             @NonNull XmlEntry parentEntry, int quark, ITmfStateSystem ss) {
 393         /*
 394          * Get the start time and end time of this entry from the display
 395          * attribute
 396          */
 397         ITmfXmlStateAttribute display = fFactory.createStateAttribute(displayEl, parentEntry);
 398         int displayQuark = display.getAttributeQuark(quark, null);
 399         if (displayQuark == IXmlStateSystemContainer.ERROR_QUARK) {
 400             return new XmlEntry(quark, parentEntry.getTrace(),
 401                     String.format("Unknown display quark for %s", ss.getAttributeName(quark)), ss); //$NON-NLS-1$
 402         }
 403
 404         long entryStart = ss.getStartTime();
 405         long entryEnd = ss.getCurrentEndTime();
 406
 407         try {
 408
 409             ITmfStateInterval oneInterval = ss.querySingleState(entryStart, displayQuark);
 410
 411             /* The entry start is the first non-null interval */
 412             while (oneInterval.getStateValue().isNull()) {
 413                 long ts = oneInterval.getEndTime() + 1;
 414                 if (ts > ss.getCurrentEndTime()) {
 415                     break;
 416                 }
 417                 oneInterval = ss.querySingleState(ts, displayQuark);
 418             }
 419             entryStart = oneInterval.getStartTime();
 420
 421             /* The entry end is the last non-null interval */
 422             oneInterval = ss.querySingleState(entryEnd, displayQuark);
 423             while (oneInterval.getStateValue().isNull()) {
 424                 long ts = oneInterval.getStartTime() - 1;
 425                 if (ts < ss.getStartTime()) {
 426                     break;
 427                 }
 428                 oneInterval = ss.querySingleState(ts, displayQuark);
 429             }
 430             entryEnd = oneInterval.getEndTime();
 431
 432         } catch (StateSystemDisposedException e) {
 433         }
 434
 435         return new XmlEntry(quark, displayQuark, parentEntry.getTrace(), ss.getAttributeName(quark),
 436                 entryStart, entryEnd, EntryDisplayType.DISPLAY, ss, entryElement);
 437     }
 438
 439     private void buildStatusEvent(XmlEntry traceEntry, @NonNull IProgressMonitor monitor, long start, long end) {
 440         long resolution = (end - start) / getDisplayWidth();
 441         long startTime = Math.max(start, traceEntry.getStartTime());
 442         long endTime = Math.min(end + 1, traceEntry.getEndTime());
 443         List<ITimeEvent> eventList = getEventList(traceEntry, startTime, endTime, resolution, monitor);
 444         if (monitor.isCanceled()) {
 445             return;
 446         }
 447         traceEntry.setEventList(eventList);
 448         redraw();
 449
 450         for (ITimeGraphEntry entry : traceEntry.getChildren()) {
 451             if (monitor.isCanceled()) {
 452                 return;
 453             }
 454             XmlEntry xmlEntry = (XmlEntry) entry;
 455             buildStatusEvent(xmlEntry, monitor, start, end);
 456         }
 457     }
 458
 459     /** Build a tree using getParentId() and getId() */
 460     private static void buildTree(Map<String, XmlEntry> entryMap, XmlEntry rootEntry) {
 461         for (XmlEntry entry : entryMap.values()) {
 462             boolean root = true;
 463             if (!entry.getParentId().isEmpty()) {
 464                 XmlEntry parent = entryMap.get(entry.getParentId());
 465                 /*
 466                  * Associate the parent entry only if their time overlap. A
 467                  * child entry may start before its parent, for example at the
 468                  * beginning of the trace if a parent has not yet appeared in
 469                  * the state system. We just want to make sure that the entry
 470                  * didn't start after the parent ended or ended before the
 471                  * parent started.
 472                  */
 473                 if (parent != null &&
 474                         !(entry.getStartTime() > parent.getEndTime() ||
 475                                 entry.getEndTime() < parent.getStartTime())) {
 476                     parent.addChild(entry);
 477                     root = false;
 478                 }
 479             }
 480             if (root) {
 481                 rootEntry.addChild(entry);
 482             }
 483         }
 484     }
 485
 486     @Override
 487     protected List<ITimeEvent> getEventList(TimeGraphEntry entry, long startTime, long endTime, long resolution, IProgressMonitor monitor) {
 488         if (!(entry instanceof XmlEntry)) {
 489             return Collections.EMPTY_LIST;
 490         }
 491         XmlEntry xmlEntry = (XmlEntry) entry;
 492         ITmfStateSystem ssq = xmlEntry.getStateSystem();
 493         final long realStart = Math.max(startTime, entry.getStartTime());
 494         final long realEnd = Math.min(endTime, entry.getEndTime());
 495         if (realEnd <= realStart) {
 496             return null;
 497         }
 498         List<ITimeEvent> eventList = null;
 499         int quark = xmlEntry.getDisplayQuark();
 500
 501         try {
 502             if (xmlEntry.getType() == EntryDisplayType.DISPLAY) {
 503
 504                 List<ITmfStateInterval> statusIntervals = StateSystemUtils.queryHistoryRange(ssq, quark, realStart, realEnd - 1, resolution, monitor);
 505                 eventList = new ArrayList<>(statusIntervals.size());
 506                 long lastEndTime = -1;
 507                 for (ITmfStateInterval statusInterval : statusIntervals) {
 508                     if (monitor.isCanceled()) {
 509                         return null;
 510                     }
 511                     int status = getStatusFromInterval(statusInterval);
 512                     long time = statusInterval.getStartTime();
 513                     long duration = statusInterval.getEndTime() - time + 1;
 514                     if (!statusInterval.getStateValue().isNull()) {
 515                         if (lastEndTime != time && lastEndTime != -1) {
 516                             eventList.add(new TimeEvent(entry, lastEndTime, time - lastEndTime));
 517                         }
 518                         eventList.add(new TimeEvent(entry, time, duration, status));
 519                     } else if (lastEndTime == -1 || time + duration >= endTime) {
 520                         // add null event if it intersects the start or end time
 521                         eventList.add(new NullTimeEvent(entry, time, duration));
 522                     }
 523                     lastEndTime = time + duration;
 524                 }
 525             }
 526         } catch (AttributeNotFoundException | TimeRangeException | StateValueTypeException | StateSystemDisposedException e) {
 527             /* Ignored */
 528         }
 529         return eventList;
 530     }
 531
 532     private int getStatusFromInterval(ITmfStateInterval statusInterval) {
 533         ITmfStateValue stateValue = statusInterval.getStateValue();
 534         int status = -1;
 535         switch (stateValue.getType()) {
 536         case INTEGER:
 537         case NULL:
 538             status = stateValue.unboxInt();
 539             break;
 540         case LONG:
 541             status = (int) stateValue.unboxLong();
 542             break;
 543         case STRING:
 544             String statusStr = stateValue.unboxStr();
 545             Integer statusInt = fStringValueMap.get(statusStr);
 546             if (statusInt != null) {
 547                 status = statusInt;
 548                 break;
 549             }
 550             ITimeGraphPresentationProvider2 pres = this.getPresentationProvider();
 551             if (pres instanceof XmlPresentationProvider) {
 552                 // Add this new state to the presentation provider
 553                 status = ((XmlPresentationProvider) pres).addState(statusStr);
 554                 fStringValueMap.put(statusStr, status);
 555             }
 556             break;
 557         case DOUBLE:
 558             status = (int) stateValue.unboxDouble();
 559             break;
 560         case CUSTOM:
 561         default:
 562             break;
 563         }
 564
 565         return status;
 566     }
 567
 568     @Override
 569     protected List<ILinkEvent> getLinkList(long startTime, long endTime, long resolution, IProgressMonitor monitor) {
 570         /* TODO: not implemented yet, need XML to go along */
 571         return Collections.EMPTY_LIST;
 572     }
 573
 574     @Override
 575     protected @NonNull Iterable<ITmfTrace> getTracesToBuild(@Nullable ITmfTrace trace) {
 576         /*
 577          * Return the current trace only. Experiments will return their
 578          * children's analyses
 579          */
 580         return (trace != null) ? Collections.singleton(trace) : Collections.EMPTY_LIST;
 581     }
 582
 583 }