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https://issues.apache.org/jira/browse/METRON-1568?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16484092#comment-16484092
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ASF GitHub Bot commented on METRON-1568:
----------------------------------------
Github user cestella commented on a diff in the pull request:
https://github.com/apache/metron/pull/1021#discussion_r189932382
--- Diff:
metron-platform/metron-common/src/main/java/org/apache/metron/common/configuration/enrichment/handler/StellarConfig.java
---
@@ -142,8 +143,14 @@ else if(kv.getValue() instanceof List) {
{
--- End diff --
The variables referenced are spread across multiple maps. It's
unreasonable to union those maps together for every message, rather passing
back the ConfigMap, which is a lazy facade on Map that doesn't union the maps.
The variable resolver can choose to support `_` or not, so the support has to
happen in the variable resolver.
> Stellar should have a _ special variable which returns the message in map form
> ------------------------------------------------------------------------------
>
> Key: METRON-1568
> URL: https://issues.apache.org/jira/browse/METRON-1568
> Project: Metron
> Issue Type: Improvement
> Reporter: Casey Stella
> Priority: Major
>
> In order to support functions which operate on the whole message, we should
> have a special variable (_, keeping with the vaguely scala theme) which can
> return the entire underlying message. This map should be immutable.
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