[
https://issues.apache.org/jira/browse/FLINK-703?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14501501#comment-14501501
]
ASF GitHub Bot commented on FLINK-703:
--------------------------------------
Github user chiwanpark commented on the pull request:
https://github.com/apache/flink/pull/572#issuecomment-94188129
Hi. I updated this PR. The changes are following.
* Re-implement this feature with generalizing `ExpressionKeys`.
* Modify `CoGroupOperatorBase`, `GroupCombineOperatorBase` and
`GroupReduceOperatorBase` to allow use of AtomicType as Key.
* Add unit tests to test invalid usage.
Because a mention for wildcard expression with atomic type exists already
in documentation. I didn't modify documentation.
> Use complete element as join key.
> ---------------------------------
>
> Key: FLINK-703
> URL: https://issues.apache.org/jira/browse/FLINK-703
> Project: Flink
> Issue Type: Improvement
> Reporter: GitHub Import
> Assignee: Chiwan Park
> Priority: Trivial
> Labels: github-import
> Fix For: pre-apache
>
>
> In some situations such as semi-joins it could make sense to use a complete
> element as join key.
> Currently this can be done using a key-selector function, but we could offer
> a shortcut for that.
> This is not an urgent issue, but might be helpful.
> ---------------- Imported from GitHub ----------------
> Url: https://github.com/stratosphere/stratosphere/issues/703
> Created by: [fhueske|https://github.com/fhueske]
> Labels: enhancement, java api, user satisfaction,
> Milestone: Release 0.6 (unplanned)
> Created at: Thu Apr 17 23:40:00 CEST 2014
> State: open
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
