Github user cestella commented on a diff in the pull request:
https://github.com/apache/incubator-metron/pull/346#discussion_r86792656
--- Diff:
metron-platform/metron-common/src/main/java/org/apache/metron/common/stellar/StellarPredicateProcessor.java
---
@@ -51,6 +48,11 @@ public Boolean parse( String rule
if(rule == null || isEmpty(rule.trim())) {
return true;
}
- return super.parse(rule, variableResolver, functionResolver, context);
+ try {
+ return super.parse(rule, variableResolver, functionResolver,
context);
+ } catch (ClassCastException e) {
+ // predicate must return boolean
+ throw new IllegalArgumentException(String.format("The rule '%s' does
not return a boolean value.", rule));
--- End diff --
Can you pass in `e` as an argument to the IAE so the user can tell the type
that was returned. Alternatively, you could add e.getMessage() to the IAE
message.
---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at infrastruct...@apache.org or file a JIRA ticket
with INFRA.
---
