GitHub user StevenMPhillips opened a pull request:
https://github.com/apache/drill/pull/207
Drill-3232: Handle promoting writers and vectors from primitive to union
type
The PromotableFieldWriter delegates all FieldWriter API calls to an inner
FieldWriter. This inner field writer can start as a specific type, and this
class will promote the writer to a UnionWriter if a call is made that the
specifically typed writer cannot handle. A new UnionVector is created, wrapping
the original vector, and replaces the original vector in the parent vector,
which can be either an AbstractMapVector or a ListVector.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/StevenMPhillips/drill drill-3232
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/drill/pull/207.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #207
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commit 81a4e714a868634592bb449eb490b7a30ac990fe
Author: Steven Phillips <[email protected]>
Date: 2015-10-01T10:26:34Z
DRILL-3229: Implement Union type vector
commit 53aaacaebff923094dee4e4d3c5fc52f112c12d4
Author: Steven Phillips <[email protected]>
Date: 2015-10-05T04:32:34Z
DRILL-3233: Expression handling for Union types
commit 3807ff05f8232586a83b4895ea5216ebdf4c60d1
Author: Steven Phillips <[email protected]>
Date: 2015-10-09T19:59:37Z
Drill-3232: Promotable writer
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