tmf: Mark TmfTraceUtils @NonNullByDefault

[deliverable/tracecompass.git] / org.eclipse.tracecompass.examples / src / org / eclipse / tracecompass / examples / ui / viewers / histogram / NewHistogramViewer.java

diff --git a/org.eclipse.tracecompass.examples/src/org/eclipse/tracecompass/examples/ui/viewers/histogram/NewHistogramViewer.java b/org.eclipse.tracecompass.examples/src/org/eclipse/tracecompass/examples/ui/viewers/histogram/NewHistogramViewer.java
index 61d0ba3e2976a8f638e2303138424a329745c86b..413d33b881ad78b3f2f7cd070c4c134321507a46 100644 (file)
--- a/org.eclipse.tracecompass.examples/src/org/eclipse/tracecompass/examples/ui/viewers/histogram/NewHistogramViewer.java
+++ b/org.eclipse.tracecompass.examples/src/org/eclipse/tracecompass/examples/ui/viewers/histogram/NewHistogramViewer.java
@@ -12,6 +12,8 @@
  *******************************************************************************/
 package org.eclipse.tracecompass.examples.ui.viewers.histogram;
 
+import static org.eclipse.tracecompass.common.core.NonNullUtils.checkNotNull;
+
 import java.util.Arrays;
 import java.util.List;
 
@@ -74,6 +76,7 @@ public class NewHistogramViewer extends TmfBarChartViewer {
 
                     /* Add the values for each trace */
                     for (ITmfTrace trace : TmfTraceManager.getTraceSet(getTrace())) {
+                        trace = checkNotNull(trace);
                         /* Retrieve the statistics object */
                         final TmfStatisticsModule statsMod =
                                TmfTraceUtils.getAnalysisModuleOfClass(trace, TmfStatisticsModule.class, TmfStatisticsModule.ID);