sealed trait ExtractColumn extends AnyRef

ExtractColumns are used to define schemas for typing transforms as well as when extracting from sources that lack a schema such as CSV.

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AnyRef, Any
Known Subclasses
ArrayColumn, BinaryColumn, BooleanColumn, DateColumn, DecimalColumn, DoubleColumn, IntegerColumn, LongColumn, StringColumn, StructColumn, TimeColumn, TimestampColumn
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Abstract Value Members

  1. abstract def description(): Option[String]
  2. abstract def id(): Option[String]

    The immutable id for the this column, normally a GUID.

    The immutable id for the this column, normally a GUID. Used in constructing the initial hash for lineage as well as a general reference.

  3. abstract def metadata(): Option[String]
  4. abstract def name(): String

    The name of the column, should match the source.

  5. abstract def nullReplacementValue(): Option[String]
  6. abstract def nullable(): Boolean
  7. abstract def nullableValues: List[String]

    List of possible strings that are equivalent to null e.g.

    List of possible strings that are equivalent to null e.g. "", "null".

  8. abstract def sparkDataType(): DataType
  9. abstract def trim(): Boolean

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  2. final def ##(): Int
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