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Posted to commits@druid.apache.org by GitBox <gi...@apache.org> on 2020/03/12 07:39:33 UTC
[GitHub] [druid] gianm opened a new pull request #9508: Move RowSignature
from druid-sql to druid-processing and make use of it.
gianm opened a new pull request #9508: Move RowSignature from druid-sql to druid-processing and make use of it.
URL: https://github.com/apache/druid/pull/9508
I split this out from another patch I'm working on that allows the broker to inline subqueries (see https://github.com/apache/druid/issues/8728). In that patch it became clear that `QueryToolChest#resultArrayFields` really should return type info as well. I started using a `Map<String, ValueType>` for that, as is done in a few other places in the code, but then realized that it would be better to use the RowSignature class from druid-sql. So I moved it into druid-processing in the following way.
This patch will unblock a future subquery inlining patch.
1) Moved (most of) RowSignature from sql to processing. Left behind the SQL-specific
stuff in a RowSignatures utility class. It also picked up some new convenience
methods along the way.
2) There were a lot of places in the code where Map<String, ValueType> was used to
associate columns with type info. These are now all replaced with RowSignature.
3) QueryToolChest's resultArrayFields method is replaced with resultArraySignature,
and it now provides type info.
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[GitHub] [druid] fjy merged pull request #9508: Move RowSignature from
druid-sql to druid-processing and make use of it.
Posted by GitBox <gi...@apache.org>.
fjy merged pull request #9508: Move RowSignature from druid-sql to druid-processing and make use of it.
URL: https://github.com/apache/druid/pull/9508
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