[
https://issues.apache.org/jira/browse/BEAM-6820?focusedWorklogId=213779&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-213779
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ASF GitHub Bot logged work on BEAM-6820:
----------------------------------------
Author: ASF GitHub Bot
Created on: 15/Mar/19 13:50
Start Date: 15/Mar/19 13:50
Worklog Time Spent: 10m
Work Description: goldfishy commented on pull request #8069: [BEAM-6820]
Cassandra object mapper abstraction
URL: https://github.com/apache/beam/pull/8069
The current Cassandra source sink is tightly coupled to the Datastax Object
Mapper. [This requires
users](https://docs.datastax.com/en/developer/java-driver/3.1/manual/object_mapper/)
of the sink to provide a POJO describing the table in Cassandra. Although the
POJO is a easy and powerful way to describe the table it does requires users to
always recompile the pipeline for each change in the table definition.
I suggest adding a abstraction layer that allows users to inject their own
mapper implementation. One example use would be a mapper that works with a
generic
[Row](https://beam.apache.org/releases/javadoc/2.4.0/org/apache/beam/sdk/values/Row.html)
implementation rather than a compile-time POJO.
This abstraction layer could be implemented by simply supplying a
MapperFactory through the Sink/Source builder.
------------------------
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Post-Commit Tests Status (on master branch)
------------------------------------------------------------------------------------------------
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Issue Time Tracking
-------------------
Worklog Id: (was: 213779)
Time Spent: 10m
Remaining Estimate: 0h
> Custom Row-Object mapper implementation for CassandraIO
> -------------------------------------------------------
>
> Key: BEAM-6820
> URL: https://issues.apache.org/jira/browse/BEAM-6820
> Project: Beam
> Issue Type: Improvement
> Components: io-java-cassandra
> Reporter: Max Charas
> Assignee: Max Charas
> Priority: Minor
> Time Spent: 10m
> Remaining Estimate: 0h
>
> The current Cassandra source sink is tightly coupled to the Datastax Object
> Mapper. [This requires
> users|https://docs.datastax.com/en/developer/java-driver/3.1/manual/object_mapper/]
> of the sink to provide a POJO describing the table in Cassandra. Although
> the POJO is a easy and powerful way to describe the table it does requires
> users to always recompile the pipeline for each change in the table
> definition.
> I suggest adding a abstraction layer that allows users to inject their own
> mapper implementation. One example use would be a mapper that works with a
> generic
> [Row|https://beam.apache.org/releases/javadoc/2.4.0/org/apache/beam/sdk/values/Row.html]
> implementation rather than a compile-time POJO.
> This abstraction layer could be implemented by simply supplying a
> MapperFactory through the Sink/Source builder.
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