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From "Sylvain Lebresne (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (CASSANDRA-10849) Decide how to handle with null multi-cell collections
Date Mon, 22 Feb 2016 09:34:18 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-10849?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Sylvain Lebresne resolved CASSANDRA-10849.
------------------------------------------
    Resolution: Duplicate

Marking as duplicate of CASSANDRA-11064 since as said above the patch there handles the changes
for this.

> Decide how to handle with null multi-cell collections
> -----------------------------------------------------
>
>                 Key: CASSANDRA-10849
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-10849
>             Project: Cassandra
>          Issue Type: Improvement
>            Reporter: Robert Stupp
>            Priority: Minor
>
> CASSANDRA-10650 introduced the ability to generate the CQL literal from a serialized
representation - currently only used to store a UDA's INITCOND.
> The code to generate the CQL literal for a {{null}} collection deals with that in the
following way:
> * null frozen collections --> CQL literal {{null}}
> * empty frozen collections --> CQL literal {{[]}} (or {{\{\}}} for maps)
> * null multi-cell collections --> CQL literal {{[]}} (or {{\{\}}} for maps) ; there's
no way to distinguish null from empty
> * empty multi-cell collections --> CQL literal {{[]}} (or {{\{\}}} for maps) ; there's
no way to distinguish null from empty
> CASSANDRA-10840 exposed that the handling is not optimal and the patch deals with this
by using a "frozen" state type to generate the CQL literal.
> It's currently not a critical thing yet - just want to know whether it's ok how CASSANDRA-10840
handles this or {{CQL3Type.toCQLLiteral}} should be changed.



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