Github user scwf commented on a diff in the pull request: https://github.com/apache/spark/pull/3431#discussion_r22570806 --- Diff: sql/core/src/main/scala/org/apache/spark/sql/sources/ddl.scala --- @@ -83,10 +118,70 @@ private[sql] class DDLParser extends StandardTokenParsers with PackratParsers wi protected lazy val className: Parser[String] = repsep(ident, ".") ^^ { case s => s.mkString(".")} protected lazy val pair: Parser[(String, String)] = ident ~ stringLit ^^ { case k ~ v => (k,v) } + + protected lazy val column: Parser[StructField] = + ident ~ dataType ^^ { case columnName ~ typ => + StructField(cleanIdentifier(columnName), typ) + } + + protected lazy val primitiveType: Parser[DataType] = + STRING ^^^ StringType | + BINARY ^^^ BinaryType | + BOOLEAN ^^^ BooleanType | + TINYINT ^^^ ByteType | + SMALLINT ^^^ ShortType | + INT ^^^ IntegerType | + BIGINT ^^^ LongType | + FLOAT ^^^ FloatType | + DOUBLE ^^^ DoubleType | + fixedDecimalType | // decimal with precision/scale + DECIMAL ^^^ DecimalType.Unlimited | // decimal with no precision/scale + DATE ^^^ DateType | + TIMESTAMP ^^^ TimestampType | + VARCHAR ~ "(" ~ numericLit ~ ")" ^^^ StringType + + protected lazy val fixedDecimalType: Parser[DataType] = + (DECIMAL ~ "(" ~> numericLit) ~ ("," ~> numericLit <~ ")") ^^ { + case precision ~ scale => DecimalType(precision.toInt, scale.toInt) + } + + protected lazy val arrayType: Parser[DataType] = + ARRAY ~> "<" ~> dataType <~ ">" ^^ { + case tpe => ArrayType(tpe) + } + + protected lazy val mapType: Parser[DataType] = + MAP ~> "<" ~> dataType ~ "," ~ dataType <~ ">" ^^ { + case t1 ~ _ ~ t2 => MapType(t1, t2) + } + + protected lazy val structField: Parser[StructField] = + ident ~ ":" ~ dataType ^^ { + case fieldName ~ _ ~ tpe => StructField(cleanIdentifier(fieldName), tpe, nullable = true) + } + + protected lazy val structType: Parser[DataType] = + STRUCT ~> "<" ~> repsep(structField, ",") <~ ">" ^^ { --- End diff -- very wired, the old version also use ```repsep(structField, ",")``` and no ```STRUCT ~> "<>" ```
--- If your project is set up for it, you can reply to this email and have your reply appear on GitHub as well. If your project does not have this feature enabled and wishes so, or if the feature is enabled but not working, please contact infrastructure at infrastruct...@apache.org or file a JIRA ticket with INFRA. --- --------------------------------------------------------------------- To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For additional commands, e-mail: reviews-h...@spark.apache.org