kotlin-spark-api_3.0.2_2.12/org.jetbrains.kotlinx.spark.api/UserDefinedFunction1

UserDefinedFunction1

open class UserDefinedFunction1<T1, R>(val udf: <Error class: unknown class>, val encoder: <Error class: unknown class><R>) : UserDefinedFunction<R, NamedUserDefinedFunction1<T1, R>>

Instance of a UDF with 1 argument. This UDF can be invoked with (typed) columns in a Dataset.select or selectTyped call. Alternatively it can be registered for SQL calls using register.

Constructors

fun <R> UserDefinedFunction1(udf: <Error class: unknown class>, encoder: <Error class: unknown class><R>)

Functions

getValue

open operator override fun getValue(thisRef: Any?, property: KProperty<*>): NamedUserDefinedFunction1<T1, R>

Returns named variant of this UDF.

invoke

operator fun invoke(param0: <Error class: unknown class>): <Error class: unknown class>

Returns an expression that invokes the UDF in untyped manner, using the given arguments.

operator fun <DsType> invoke(param0: <Error class: unknown class><DsType, T1>): <Error class: unknown class><DsType, R>

Allows this UDF to be called in typed manner using columns in a Dataset.selectTyped call.

invokeUntyped

fun invokeUntyped(param0: <Error class: unknown class>): <Error class: unknown class>

Returns an expression that invokes the UDF in untyped manner, using the given arguments.

withName

open override fun withName(name: String): NamedUserDefinedFunction1<T1, R>

Returns named variant of this UDF.

Properties

deterministic

open val deterministic: Boolean

Returns true iff the UDF is deterministic, i.e. the UDF produces the same output given the same input.

encoder

open override val encoder: <Error class: unknown class><R>

nullable

open val nullable: Boolean

Returns true when the UDF can return a nullable value.

udf

open override val udf: <Error class: unknown class>

Inheritors

NamedUserDefinedFunction1

UserDefinedFunction1

See also

Constructors

Functions

Properties

Inheritors