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Posted to commits@cassandra.apache.org by "Doug Rohrer (Jira)" <ji...@apache.org> on 2021/11/03 20:32:00 UTC
[jira] [Assigned] (CASSANDRA-17117) CQLSSTableWriter backwards
compatibility fix for Date fields
[ https://issues.apache.org/jira/browse/CASSANDRA-17117?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Doug Rohrer reassigned CASSANDRA-17117:
---------------------------------------
Assignee: Doug Rohrer
> CQLSSTableWriter backwards compatibility fix for Date fields
> ------------------------------------------------------------
>
> Key: CASSANDRA-17117
> URL: https://issues.apache.org/jira/browse/CASSANDRA-17117
> Project: Cassandra
> Issue Type: Bug
> Components: Local/SSTable
> Reporter: Doug Rohrer
> Assignee: Doug Rohrer
> Priority: Normal
> Attachments: CASSANDRA-17117-4.0.patch, CASSANDRA-17117-trunk.patch
>
>
> {{cassandra-all}} library consumers of the CQLSSTableWriter class cannot easily create an appropriate instance of the {{LocalDate}} class in order to write SSTables including dates, and the current implementation no longer accepts a {{int}} value as a valid input as previous versions of the class would - we used to use {{((AbstractType)columnSpecification.type).decompose(value);}} in order to serialize the value, but now we use the type codec's .serialize method. Unfortunately, this doesn't work when the consumer can't easily create the type needed (serialize, in the case of dates, takes a {{LocalDate}} instance which is not easy to construct outside of Cassandra internal code).
> This can be worked around by catching the resulting {{ClassCastException}} thrown from the {{serialize}} call and falling back to the older {{decompose}} implementation, which would maintain backwards-compatibility with other users of the CQLSSTableWriter in cases where they are passing integers for date fields, which used to work.
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