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| author | felixcheung <felixcheung_m@hotmail.com> | 2016-05-26 11:20:20 -0700 |
|---|---|---|
| committer | Shivaram Venkataraman <shivaram@cs.berkeley.edu> | 2016-05-26 11:20:20 -0700 |
| commit | c76457c8e422ce6fbf72a8fe5db94565783b12d0 (patch) | |
| tree | 32ff6361643f6d2cd6e1e0b2118528e3c5c5109f /yarn | |
| parent | 6d506c9ae9a2519d1a93e788ae5316d4f942d35d (diff) | |
| download | spark-c76457c8e422ce6fbf72a8fe5db94565783b12d0.tar.gz spark-c76457c8e422ce6fbf72a8fe5db94565783b12d0.tar.bz2 spark-c76457c8e422ce6fbf72a8fe5db94565783b12d0.zip | |
[SPARK-10903][SPARKR] R - Simplify SQLContext method signatures and use a singleton
Eliminate the need to pass sqlContext to method since it is a singleton - and we don't want to support multiple contexts in a R session.
Changes are done in a back compat way with deprecation warning added. Method signature for S3 methods are added in a concise, clean approach such that in the next release the deprecated signature can be taken out easily/cleanly (just delete a few lines per method).
Custom method dispatch is implemented to allow for multiple JVM reference types that are all 'jobj' in R and to avoid having to add 30 new exports.
Author: felixcheung <felixcheung_m@hotmail.com>
Closes #9192 from felixcheung/rsqlcontext.
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