org.apache.spark.sql.catalyst.expressions.codegen

CodeGenerator

abstract class CodeGenerator[InType <: AnyRef, OutType <: AnyRef] extends Logging

A base class for generators of byte code to perform expression evaluation. Includes a set of helpers for referring to Catalyst types and building trees that perform evaluation of individual expressions.

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Instance Constructors

  1. new CodeGenerator()

Abstract Value Members

  1. abstract def bind(in: InType, inputSchema: Seq[Attribute]): InType

    Binds an input expression to a given input schema

    Binds an input expression to a given input schema

    Attributes
    protected
  2. abstract def canonicalize(in: InType): InType

    Canonicalizes an input expression.

    Canonicalizes an input expression. Used to avoid double caching expressions that differ only cosmetically.

    Attributes
    protected
  3. abstract def create(in: InType): OutType

    Generates a class for a given input expression.

    Generates a class for a given input expression. Called when there is not cached code already available.

    Attributes
    protected

Concrete Value Members

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

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

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  3. final def ##(): Int

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  4. final def ==(arg0: AnyRef): Boolean

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

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  6. final def asInstanceOf[T0]: T0

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  7. def clone(): AnyRef

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    @throws( ... )
  8. final def eq(arg0: AnyRef): Boolean

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  9. def equals(arg0: Any): Boolean

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  10. def finalize(): Unit

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    protected[java.lang]
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    @throws( classOf[java.lang.Throwable] )
  11. def generate(expressions: InType): OutType

    Generates the requested evaluator given already bound expression(s).

  12. def generate(expressions: InType, inputSchema: Seq[Attribute]): OutType

    Generates the requested evaluator binding the given expression(s) to the inputSchema.

  13. val genericMutableRowType: String

    Attributes
    protected
  14. final def getClass(): Class[_]

    Definition Classes
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  15. def hashCode(): Int

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  16. def initializeLogIfNecessary(isInterpreter: Boolean): Unit

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  17. final def isInstanceOf[T0]: Boolean

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  18. def isTraceEnabled(): Boolean

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  19. def log: Logger

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  20. def logDebug(msg: ⇒ String, throwable: Throwable): Unit

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  21. def logDebug(msg: ⇒ String): Unit

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  22. def logError(msg: ⇒ String, throwable: Throwable): Unit

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  23. def logError(msg: ⇒ String): Unit

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  24. def logInfo(msg: ⇒ String, throwable: Throwable): Unit

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  25. def logInfo(msg: ⇒ String): Unit

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  26. def logName: String

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  27. def logTrace(msg: ⇒ String, throwable: Throwable): Unit

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  28. def logTrace(msg: ⇒ String): Unit

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  29. def logWarning(msg: ⇒ String, throwable: Throwable): Unit

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  30. def logWarning(msg: ⇒ String): Unit

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

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  32. def newCodeGenContext(): CodegenContext

    Create a new codegen context for expression evaluator, used to store those expressions that don't support codegen

  33. final def notify(): Unit

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  34. final def notifyAll(): Unit

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

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  36. def toString(): String

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  37. final def wait(): Unit

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    @throws( ... )
  38. final def wait(arg0: Long, arg1: Int): Unit

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    @throws( ... )
  39. final def wait(arg0: Long): Unit

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