kotlin-spark-api_3.3.2_2.13/org.jetbrains.kotlinx.spark.api/NamedUserDefinedFunction

NamedUserDefinedFunction

interface NamedUserDefinedFunction<Return, This> : UserDefinedFunction<Return, This>

Typed and named wrapper around SparkUserDefinedFunction with defined encoder.

Parameters

Return

the return type of the udf

This

a self reference to the named version of the SparkUserDefinedFunction implementing class. Unfortunately needed to allow functions to treat any NamedTypedUserDefinedFunction as a normal TypedUserDefinedFunction.

Inheritors

Properties

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open val deterministic: Boolean

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

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abstract val encoder: Encoder<Return>
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abstract val name: String
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open val nullable: Boolean

Returns true when the UDF can return a nullable value.

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abstract val udf: UserDefinedFunction

Functions

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abstract operator fun getValue(thisRef: Any?, property: KProperty<*>): This

Converts this UserDefinedFunction to a NamedUserDefinedFunction.

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abstract fun withName(name: String): This

Converts this UserDefinedFunction to a NamedUserDefinedFunction.