org.apache.spark.sql.catalyst.types

UserDefinedType

abstract class UserDefinedType[UserType] extends DataType with Serializable

::DeveloperApi:: The data type for User Defined Types (UDTs).

This interface allows a user to make their own classes more interoperable with SparkSQL; e.g., by creating a UserDefinedType for a class X, it becomes possible to create a SchemaRDD which has class X in the schema.

For SparkSQL to recognize UDTs, the UDT must be annotated with org.apache.spark.sql.catalyst.annotation.SQLUserDefinedType.

The conversion via serialize occurs when instantiating a SchemaRDD from another RDD. The conversion via deserialize occurs when reading from a SchemaRDD.

Annotations
@DeveloperApi()
Linear Supertypes
Serializable, Serializable, DataType, AnyRef, Any
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  1. UserDefinedType
  2. Serializable
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Instance Constructors

  1. new UserDefinedType()

Abstract Value Members

  1. abstract def deserialize(datum: Any): UserType

    Convert a SQL datum to the user type

  2. abstract def serialize(obj: Any): Any

    Convert the user type to a SQL datum

    Convert the user type to a SQL datum

    TODO: Can we make this take obj: UserType? The issue is in ScalaReflection.convertToCatalyst, where we need to convert Any to UserType.

  3. abstract def sqlType: DataType

    Underlying storage type for this UDT

  4. abstract def userClass: Class[UserType]

    Class object for the UserType

Concrete Value Members

  1. final def !=(arg0: Any): Boolean

    Definition Classes
    AnyRef → Any

  2. final def ##(): Int

    Definition Classes
    AnyRef → Any

  3. final def ==(arg0: Any): Boolean

    Definition Classes
    AnyRef → Any

  4. final def asInstanceOf[T0]: T0

    Definition Classes
    Any

  5. def clone(): AnyRef

    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

  6. final def eq(arg0: AnyRef): Boolean

    Definition Classes
    AnyRef

  7. def equals(arg0: Any): Boolean

    Definition Classes
    AnyRef → Any

  8. def finalize(): Unit

    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] )

  9. final def getClass(): Class[_]

    Definition Classes
    AnyRef → Any

  10. def hashCode(): Int

    Definition Classes
    AnyRef → Any

  11. final def isInstanceOf[T0]: Boolean

    Definition Classes
    Any

  12. def isPrimitive: Boolean

    Definition Classes
    DataType

  13. def json: String

    Definition Classes
    DataType

  14. final def ne(arg0: AnyRef): Boolean

    Definition Classes
    AnyRef

  15. final def notify(): Unit

    Definition Classes
    AnyRef

  16. final def notifyAll(): Unit

    Definition Classes
    AnyRef

  17. def prettyJson: String

    Definition Classes
    DataType

  18. def pyUDT: String

    Paired Python UDT class, if exists.

  19. final def synchronized[T0](arg0: ⇒ T0): T0

    Definition Classes
    AnyRef

  20. def toString(): String

    Definition Classes
    AnyRef → Any

  21. def typeName: String

    Definition Classes
    DataType

  22. def unapply(a: Expression): Boolean

    Matches any expression that evaluates to this DataType

    Matches any expression that evaluates to this DataType

    Definition Classes
    DataType

  23. final def wait(): Unit

    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

  24. final def wait(arg0: Long, arg1: Int): Unit

    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

  25. final def wait(arg0: Long): Unit

    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

Inherited from Serializable

Inherited from Serializable

Inherited from DataType

Inherited from AnyRef

Inherited from Any

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