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https://issues.apache.org/jira/browse/FLINK-846?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Fabian Hueske updated FLINK-846:
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Issue Type: Sub-task (was: Bug)
Parent: FLINK-1328
> Semantic Annotations - Inconsistencies
> --------------------------------------
>
> Key: FLINK-846
> URL: https://issues.apache.org/jira/browse/FLINK-846
> Project: Flink
> Issue Type: Sub-task
> Reporter: GitHub Import
> Labels: github-import
> Fix For: pre-apache
>
>
> This is basically a thread for discussion. There are still a few
> inconsistencies in the semantic annotations. The following examples
> illustrate that:
> _Constant fields_:
> `"1 -> 0,1" "3->4"` means field 1 is copied unmodified to 0 and 1, while 3
> becomes 4.
> `"1 ->0,1 ; 3->4"` means the same thing, expressed in a single string
> (semicolon is the delimiter between statements about fields).
> `"1 , 3"` means that 1 and 3 remain constant as 1 and 3. Note that comma is
> the delimiter here.
> _Read Fields_:
> `"0 , 2"` means that fields 0 and 2 are read. Note that here, the delimiter
> is the comma, like with the standalone constant fields, unlike the constant
> fields with arrow notation.
> I find that a bit inconsistent, especially the mixed use of comma and
> semicolon for the constant fields.
> - Do we want to keep it that way?
> - Or use the semicolon for the standalone constant fields and read fields?
> - Or use the comma in the constant fields (finding an alternative delimiter
> for the right hand side of the arrow?
> ---------------- Imported from GitHub ----------------
> Url: https://github.com/stratosphere/stratosphere/issues/846
> Created by: [StephanEwen|https://github.com/StephanEwen]
> Labels:
> Created at: Wed May 21 20:54:26 CEST 2014
> State: open
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