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

GenerateUnsafeProjection

Related Doc: package codegen

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object GenerateUnsafeProjection extends CodeGenerator[Seq[Expression], UnsafeProjection]

Generates a Projection that returns an UnsafeRow.

It generates the code for all the expressions, compute the total length for all the columns (can be accessed via variables), and then copy the data into a scratch buffer space in the form of UnsafeRow (the scratch buffer will grow as needed).

Note: The returned UnsafeRow will be pointed to a scratch buffer inside the projection.

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

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  2. final def ##(): Int

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

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  4. final def asInstanceOf[T0]: T0

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  5. def bind(in: Seq[Expression], inputSchema: Seq[Attribute]): Seq[Expression]

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    Binds an input expression to a given input schema

    Binds an input expression to a given input schema

    Attributes
    protected
    Definition Classes
    GenerateUnsafeProjectionCodeGenerator
  6. def canSupport(dataType: DataType): Boolean

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    Returns true iff we support this data type.

  7. def canonicalize(in: Seq[Expression]): Seq[Expression]

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    Canonicalizes an input expression.

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

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    GenerateUnsafeProjectionCodeGenerator
  8. def clone(): AnyRef

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    @throws( ... )
  9. def create(references: Seq[Expression]): UnsafeProjection

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    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.

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    Definition Classes
    GenerateUnsafeProjectionCodeGenerator
  10. def createCode(ctx: CodegenContext, expressions: Seq[Expression], useSubexprElimination: Boolean = false): ExprCode

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  11. final def eq(arg0: AnyRef): Boolean

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  12. def equals(arg0: Any): Boolean

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  13. def finalize(): Unit

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    @throws( classOf[java.lang.Throwable] )
  14. def generate(expressions: Seq[Expression], subexpressionEliminationEnabled: Boolean): UnsafeProjection

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  15. def generate(expressions: Seq[Expression]): UnsafeProjection

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

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

    Definition Classes
    CodeGenerator
  16. def generate(expressions: Seq[Expression], inputSchema: Seq[Attribute]): UnsafeProjection

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

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

    Definition Classes
    CodeGenerator
  17. val genericMutableRowType: String

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    CodeGenerator
  18. final def getClass(): Class[_]

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  19. def hashCode(): Int

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  20. def initializeLogIfNecessary(isInterpreter: Boolean): Unit

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  21. final def isInstanceOf[T0]: Boolean

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  22. def isTraceEnabled(): Boolean

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  23. def log: Logger

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

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

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

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

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

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

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  30. def logName: String

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

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

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

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

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

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  36. def newCodeGenContext(): CodegenContext

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

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

    Definition Classes
    CodeGenerator
  37. final def notify(): Unit

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  38. final def notifyAll(): Unit

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

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  40. def toString(): String

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  41. final def wait(): Unit

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  42. final def wait(arg0: Long, arg1: Int): Unit

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  43. final def wait(arg0: Long): Unit

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