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[WIP][Spark-SQL] Optimize the Constant Folding for Expression #482

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[WIP][Spark-SQL] Optimize the Constant Folding for Expression #482

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2645d4f
Constant Folding(null propagation)
chenghao-intel Apr 28, 2014
3c045c7
Optimize the Constant Folding by adding more rules
chenghao-intel Apr 28, 2014
536c005
Add Exceptional case for constant folding
chenghao-intel Apr 28, 2014
9cf0396
update code according to the code review comment
chenghao-intel Apr 28, 2014
543ef9d
fix code style issues
chenghao-intel Apr 29, 2014
9ccefdb
Add tests for optimized expression evaluation.
marmbrus Apr 29, 2014
b28e03a
Merge pull request #1 from marmbrus/pr/482
chenghao-intel Apr 30, 2014
27ea3d7
Fix Constant Folding Bugs & Add More Unittests
chenghao-intel Apr 30, 2014
80f9f18
Update the UnitTest for aggregation constant folding
chenghao-intel Apr 30, 2014
50444cc
Remove the unnecessary null checking
chenghao-intel Apr 30, 2014
29c8166
Update the code for feedback of code review
chenghao-intel May 5, 2014
68b9fad
Remove the Literal pattern matching for NullPropagation
chenghao-intel May 5, 2014
2f14b50
Fix code style issues
chenghao-intel May 6, 2014
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Remove the unnecessary null checking
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@chenghao-intel
chenghao-intel committed Apr 30, 2014
commit 50444cc04edafff9e75e41bf06500d7936b178b8
10 changes: 2 additions & 8 deletions sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/complexTypes.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -52,21 +52,15 @@ case class GetItem(child: Expression, ordinal: Expression) extends Expression {
if (child.dataType.isInstanceOf[ArrayType]) {
val baseValue = value.asInstanceOf[Seq[_]]
val o = key.asInstanceOf[Int]
if (baseValue == null) {
null
} else if (o >= baseValue.size || o < 0) {
if (o >= baseValue.size || o < 0) {
null
} else {
baseValue(o)
}
} else {
val baseValue = value.asInstanceOf[Map[Any, _]]
val key = ordinal.eval(input)
if (baseValue == null) {
null
} else {
baseValue.get(key).orNull
}
baseValue.get(key).orNull
}
}
}
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