CodeGeneratorWithInterpretedFallback-spark技术分享

CodeGeneratorWithInterpretedFallback

CodeGeneratorWithInterpretedFallback is the base of codegen object generators that can create objects for codegen and interpreted evaluation paths.

Method Description

createCodeGeneratedObject



createCodeGeneratedObject(in: IN): OUT

createCodeGeneratedObject(in: IN): OUT

Used when…FIXME

createInterpretedObject



createInterpretedObject(in: IN): OUT

createInterpretedObject(in: IN): OUT

Used when…FIXME

Note	UnsafeProjection is the one and only known implementation of the CodeGeneratorWithInterpretedFallback Contract in Apache Spark.

Note

CodeGeneratorWithInterpretedFallback is a Scala type constructor (aka generic type) that accepts two types referred as IN and OUT.



abstract class CodeGeneratorWithInterpretedFallback[IN, OUT]

abstract class CodeGeneratorWithInterpretedFallback[IN, OUT]



createObject(in: IN): OUT

createObject(in: IN): OUT

createObject…FIXME

Note	`createObject` is used exclusively when `UnsafeProjection` is requested to create an UnsafeProjection for Catalyst expressions.