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[AURON #1549] Implement native function of initcap. #1550

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Merged
richox merged 1 commit into from
Nov 3, 2025
+37 −0
Merged

[AURON #1549] Implement native function of initcap. #1550

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35 changes: 35 additions & 0 deletions spark-extension-shims-spark/src/test/scala/org/apache/spark/sql/auron/AuronQuerySuite.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -317,4 +317,39 @@ class AuronQuerySuite
checkAnswer(sql(q), Seq(expected))
}
}

test("initcap basic") {
Seq(
("select initcap('spark sql')", Row("Spark Sql")),
("select initcap('SPARK')", Row("Spark")),
("select initcap('sPaRk')", Row("Spark")),
("select initcap('')", Row("")),
("select initcap(null)", Row(null))).foreach { case (q, expected) =>
checkAnswer(sql(q), Seq(expected))
}
}

test("initcap: word boundaries and punctuation") {
Seq(
("select initcap('hello world')", Row("Hello World")),
("select initcap('hello_world')", Row("Hello_world")),
("select initcap('über-alles')", Row("Über-alles")),
("select initcap('foo.bar/baz')", Row("Foo.bar/baz")),
("select initcap('v2Ray is COOL')", Row("V2ray Is Cool")),
("select initcap('rock''n''roll')", Row("Rocknroll")),
("select initcap('hi\\tthere')", Row("Hi\tthere")),
("select initcap('hi\\nthere')", Row("Hi\nthere"))).foreach { case (q, expected) =>
checkAnswer(sql(q), Seq(expected))
}
}

test("initcap: mixed cases and edge cases") {
Seq(
("select initcap('a1b2 c3D4')", Row("A1b2 C3d4")),
("select initcap('---abc---')", Row("---abc---")),
("select initcap(' multiple spaces ')", Row(" Multiple Spaces "))).foreach {
case (q, expected) =>
checkAnswer(sql(q), Seq(expected))
}
}
}
2 changes: 2 additions & 0 deletions spark-extension/src/main/scala/org/apache/spark/sql/auron/NativeConverters.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -858,6 +858,8 @@ object NativeConverters extends Logging {
buildScalarFunction(pb.ScalarFunction.MD5, Seq(unpackBinaryTypeCast(_1)), StringType)
case Reverse(_1) =>
buildScalarFunction(pb.ScalarFunction.Reverse, Seq(unpackBinaryTypeCast(_1)), StringType)
case InitCap(_1) =>
buildScalarFunction(pb.ScalarFunction.InitCap, Seq(unpackBinaryTypeCast(_1)), StringType)
case Sha2(_1, Literal(224, _)) =>
buildExtScalarFunction("Sha224", Seq(unpackBinaryTypeCast(_1)), StringType)
case Sha2(_1, Literal(0, _)) =>
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