Github user HuJiayin commented on a diff in the pull request: https://github.com/apache/spark/pull/7115#discussion_r34214181 --- Diff: sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/stringOperations.scala --- @@ -275,6 +276,24 @@ case class StringLength(child: Expression) extends UnaryExpression with ExpectsI } /** + * A function that return soundex code of the given string expression. + */ +case class SoundEx(child: Expression) extends UnaryExpression with ExpectsInputTypes { + override def dataType: DataType = StringType + + override def inputTypes: Seq[DataType] = Seq(StringType) + + override def eval(input: InternalRow): Any = { + val string = child.eval(input) + try { + string.asInstanceOf[UTF8String].SoundexWrapper(string.asInstanceOf[UTF8String]) + } catch { + case e: UnsupportedEncodingException => return null + } --- End diff -- nullSafeEval is inside the method SoundexWrapper.
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