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https://issues.apache.org/jira/browse/METRON-379?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16112778#comment-16112778
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ASF GitHub Bot commented on METRON-379:
---------------------------------------
Github user cestella commented on a diff in the pull request:
https://github.com/apache/metron/pull/675#discussion_r131150151
--- Diff:
metron-stellar/stellar-common/src/main/java/org/apache/metron/stellar/common/LambdaExpression.java
---
@@ -56,9 +57,9 @@ public Object apply(List<Object> variableArgs) {
lambdaVariables.put(variables.get(i), null);
}
- VariableResolver variableResolver = variable ->
lambdaVariables.getOrDefault(variable
+ VariableResolver variableResolver = new
DefaultVariableResolver(variable -> lambdaVariables.getOrDefault(variable
--- End diff --
Ok, help me out here, can you give me an example of the impact of this
change? Maybe a `MAP()` function and how it acts before the change and how it
would act after the change?
> Stellar - No Error When Adding Variables That Do Not Exist
> ----------------------------------------------------------
>
> Key: METRON-379
> URL: https://issues.apache.org/jira/browse/METRON-379
> Project: Metron
> Issue Type: Bug
> Affects Versions: 0.2.1BETA
> Reporter: Nick Allen
> Assignee: Otto Fowler
> Labels: stellar
>
> Running a Stellar expression like "1 + var + does + not + exist" results in a
> value of 1.0. I would expect an exception or error condition.
> {code:title=StellarTest.java|borderStyle=solid}
> @Test(expected = ParseException.class)
> public void testMissingVariables() {
> String query = "1 + cannot + add + missing + variables";
> run(query, new HashMap<>());
> }
> {code}
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