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[SPARK-8227][SQL]Add function unhex #7113

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[SPARK-8227][SQL]Add function unhex #7113

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c852d46
Add function unhex
zhichao-li Jun 30, 2015
11945c7
style
zhichao-li Jun 30, 2015
cde73f5
update to use AutoCastInputTypes
zhichao-li Jun 30, 2015
bffd37f
change to use Hex in apache common package
zhichao-li Jul 1, 2015
607d7a3
use checkInputTypes
zhichao-li Jul 1, 2015
fe5c14a
add todigit
zhichao-li Jul 1, 2015
a4ae6dc
add udf_unhex to whitelist
zhichao-li Jul 1, 2015
379356e
remove exception checking
zhichao-li Jul 2, 2015
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zhichao-li committed Jun 30, 2015
commit 11945c768b9b7de9b44e5cafeef66f0e8f702f52
2 changes: 1 addition & 1 deletion sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/math.scala
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Expand Up @@ -373,7 +373,7 @@ case class UnHex(child: Expression)
unhex(num.asInstanceOf[UTF8String].toString)
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@davies davies Jun 30, 2015

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Converting UTF8String to String is slow, please use getBytes

}
}

private def unhex(s: String): Array[Byte] = {
// append a leading 0 if needed
val str = if (s.length % 2 == 1) {"0" + s} else {s}
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