kotlin-spark-api_3.0.0_2.12/org.jetbrains.kotlinx.spark.api/UserDefinedFunction4

UserDefinedFunction4

open class UserDefinedFunction4<T1, T2, T3, T4, R>(val udf: <Error class: unknown class>, val encoder: <Error class: unknown class><R>) : UserDefinedFunction<R, NamedUserDefinedFunction4<T1, T2, T3, T4, R>>

Instance of a UDF with 4 arguments. 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> UserDefinedFunction4(udf: <Error class: unknown class>, encoder: <Error class: unknown class><R>)

Functions

getValue

open operator override fun getValue(thisRef: Any?, property: KProperty<*>): NamedUserDefinedFunction4<T1, T2, T3, T4, R>

Returns named variant of this UDF.

invoke

operator fun invoke( param0: <Error class: unknown class>, param1: <Error class: unknown class>, param2: <Error class: unknown class>, param3: <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>, param1: <Error class: unknown class><DsType, T2>, param2: <Error class: unknown class><DsType, T3>, param3: <Error class: unknown class><DsType, T4>): <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>, param1: <Error class: unknown class>, param2: <Error class: unknown class>, param3: <Error class: unknown class>): <Error class: unknown class>

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

withName