JMC-5639: Can't resolve event type names without Recording Settings event

[Ken Dobson]

Hi all,

This is a pretty simple fix for
https://bugs.openjdk.java.net/projects/JMC/issues/JMC-5663 if someone could
please review it that would be great.

diff -r 49f6575169ce
core/org.openjdk.jmc.flightrecorder.rules/src/main/java/org/openjdk/jmc/flightrecorder/rules/util/RulesToolkit.java
---
a/core/org.openjdk.jmc.flightrecorder.rules/src/main/java/org/openjdk/jmc/flightrecorder/rules/util/RulesToolkit.java
Tue Jul 31 20:02:30 2018 +0200
+++
b/core/org.openjdk.jmc.flightrecorder.rules/src/main/java/org/openjdk/jmc/flightrecorder/rules/util/RulesToolkit.java
Wed Sep 12 16:11:17 2018 -0400
@@ -952,12 +952,16 @@

     private static String getEventTypeNames(IItemCollection items) {
         Set<String> names = items.getAggregate(Aggregators.distinct("",
TYPE_NAME_ACCESSOR_FACTORY)); //$NON-NLS-1$
-        if (names == null) {
-            return null;
+        List<String> quotedNames = new ArrayList<>();
+        if (names == null || names.isEmpty()) {
+            for(IItemIterable iter : items){
+                quotedNames.add("'" + iter.getType().getIdentifier() +
"'");
+            }
         }
-        List<String> quotedNames = new ArrayList<>();
-        for (String name : names) {
-            quotedNames.add("'" + name + "'"); //$NON-NLS-1$ //$NON-NLS-2$
+        else {
+            for (String name : names) {
+                quotedNames.add("'" + name + "'"); //$NON-NLS-1$
//$NON-NLS-2$
+            }
         }
         Collections.sort(quotedNames);
         return StringToolkit.join(quotedNames, ", "); //$NON-NLS-1$

Thanks,

Ken