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https://issues.apache.org/jira/browse/CASSANDRA-17190?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Benjamin Lerer updated CASSANDRA-17190:
---------------------------------------
Fix Version/s: 4.1
(was: 4.x)
Source Control Link:
https://github.com/apache/cassandra/commit/5cf62c6c02322505db9260d2aa9031386326fc75
Resolution: Fixed
Status: Resolved (was: Ready to Commit)
Committed into cassandra trunk at 5cf62c6c02322505db9260d2aa9031386326fc75
and DTest change committed into DTest trunk at
049b1c06aa35d6b10a0b3bab1a21d8c40a8ae4c0
> Add support for String contatenation through the "+" operator
> -------------------------------------------------------------
>
> Key: CASSANDRA-17190
> URL: https://issues.apache.org/jira/browse/CASSANDRA-17190
> Project: Cassandra
> Issue Type: Improvement
> Components: CQL/Interpreter
> Reporter: Benjamin Lerer
> Assignee: Manish Ghildiyal
> Priority: Normal
> Labels: AdventCalendar2021, lhf
> Fix For: 4.1
>
> Time Spent: 3h 20m
> Remaining Estimate: 0h
>
> Since 4.0, Cassandra support operations on numeric types and on some temporal
> types.
> We should add support for string concatenations through the {{+}} operator.
> +Additional information for newcomers:+
> Cassandra has 2 string types: {{Text}} ({{UTF8Type}}) and ascii
> ({{AsciiType}}) both are sub-classes of ({{StringType}}). In order to add
> support for string concatenation you will need to add a new method to
> {{StringType}} and modify {{OperationFcts}} to add the new functions (one for
> each combination of types: ascii/ascii, ascii/text, text/ascii and text/text).
> The unit test should be added to {{OperationFctsTest}}.
> To allow for concatenating constants (eg: SELECT v1 + ' ' + v2 FROM ...) you
> will need to add a {{getPreferedTypeFor}} method to
> {{org.apache.cassandra.Constants.Type.STRING}} that determine the constant
> type based on its content (ascii or not).
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