[FLINK-5185] [Table API & SQL] Decouple BatchTableSourceScan with TableSourceTable #2921
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Test Plan: junit Reviewers: kete.yangkt Differential Revision: http://phabricator.taobao.net/D6601
wuchong
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Dec 2, 2016
| table: RelOptTable, | ||
| rowType: RelDataType) | ||
| extends BatchScan(cluster, traitSet, table, rowType) { | ||
| val tableSource: BatchTableSource[_]) |
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Do we have to declare this field as val ? It seems that it is only used in this class.
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@wuchong , Thanks for your review. For later use, the projection pushdown rule needs to get the actual tablesource of the BatchTableSourceScan, then do something on it.
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Thanks for the PR @beyond1920! |
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merging |
fhueske
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Dec 2, 2016
…ourceScan. This closes apache#2921.
static-max
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Dec 13, 2016
…ourceScan. This closes apache#2921.
joseprupi
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Feb 12, 2017
…ourceScan. This closes apache#2921.
hequn8128
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Jun 22, 2017
…ourceScan. This closes apache#2921.
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The pr aims to decouple BatchTableSourceScan with TableSourceTable for further optimization, e.g, projection pushdown/filter pushdown/query pushdown. The principle is let BatchTableSourceScan directly holding TableSource instead of holding TableSourceTable.
The main changes including: