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