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https://issues.apache.org/jira/browse/METRON-1090?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16331170#comment-16331170
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ASF GitHub Bot commented on METRON-1090:
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Github user mattf-horton commented on the issue:
https://github.com/apache/metron/pull/687
If one insists that ':=' in Enrichments is a Metron add-on not Stellar,
that is equivalent to stating that Enrichment doesn't use Stellar but rather a
custom DSL derived from Stellar. The xml stuff wrapped around Stellar by
Profiler, Enrichments, etc, can reasonably be viewed as external to Stellar,
but the ':=' token is clearly part of the Enrichment DSL.
The ':=' token is also part of the Stellar REPL, which again we've wrapped
with caveats that it's got additions to Stellar that aren't part of Stellar.
Sure quacks like a duck to me, but if it's not a Duck then it's a non-Duck,
according to Aristotle :-)
Fact is, to any user not immersed in implementation details, it's part of
Stellar. Why don't we be nice and make it all uniform?
> STELLAR Add Assignment capability to Stellar language
> -----------------------------------------------------
>
> Key: METRON-1090
> URL: https://issues.apache.org/jira/browse/METRON-1090
> Project: Metron
> Issue Type: New Feature
> Reporter: Otto Fowler
> Assignee: Otto Fowler
> Priority: Major
>
> Add support for =, +=, -=, *=, /= for variables in stellar.
> foo = 5 returns 5 AND sets foo to 5 if the VariableResolver supports it.
> The shell should be changed to assign variables using this syntax, because
> exposing the left side to stellar allows catching errors for invalid keywords
> in left side.
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