CodeGenContext

Value Members

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 val INPUT_ROW: String("i")

   

   The variable name of the input row in generated code.

5. final val JAVA_BOOLEAN: String("boolean")

   

6. final val JAVA_BYTE: String("byte")

   

7. final val JAVA_DOUBLE: String("double")

   

8. final val JAVA_FLOAT: String("float")

   

9. final val JAVA_INT: String("int")

   

10. final val JAVA_LONG: String("long")

    

11. final val JAVA_SHORT: String("short")

    

12. def addMutableState(javaType: String, variableName: String, initCode: String): Unit

    

13. def addNewFunction(funcName: String, funcCode: String): Unit

    

14. val addedFunctions: Map[String, String]

    

    Holding all the functions those will be added into generated class.

15. final def asInstanceOf[T0]: T0

    

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16. def boxedType(dt: DataType): String

    

17. def boxedType(jt: String): String

    

    Returns the boxed type in Java.

18. def clone(): AnyRef

    

    Attributes

    protected[java.lang]

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    @throws( ... )

19. def defaultValue(dt: DataType): String

    

20. def defaultValue(jt: String): String

    

    Returns the representation of default value for a given Java Type.

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

    

    Definition Classes

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22. def equals(arg0: Any): Boolean

    

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23. val equivalentExpressions: EquivalentExpressions

    

    Holds expressions that are equivalent.

    Holds expressions that are equivalent. Used to perform subexpression elimination during codegen.

    For expressions that appear more than once, generate additional code to prevent recomputing the value.

    For example, consider two exprsesion generated from this SQL statement: SELECT (col1 + col2), (col1 + col2) / col3.

    equivalentExpressions will match the tree containing col1 + col2 and it will only be evaluated once.

24. def finalize(): Unit

    

    Attributes

    protected[java.lang]

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    @throws( classOf[java.lang.Throwable] )

25. def freshName(prefix: String): String

    

    Returns a term name that is unique within this instance of a CodeGenerator.

    Returns a term name that is unique within this instance of a CodeGenerator.

    (Since we aren't in a macro context we do not seem to have access to the built in freshName function.)

26. def genComp(dataType: DataType, c1: String, c2: String): String

    

    Generates code for comparing two expressions.

    Generates code for comparing two expressions.

    dataType

    data type of the expressions

    c1

    name of the variable of expression 1's output

    c2

    name of the variable of expression 2's output

27. def genEqual(dataType: DataType, c1: String, c2: String): String

    

    Generates code for equal expression in Java.

28. def genGreater(dataType: DataType, c1: String, c2: String): String

    

    Generates code for greater of two expressions.

    Generates code for greater of two expressions.

    dataType

    data type of the expressions

    c1

    name of the variable of expression 1's output

    c2

    name of the variable of expression 2's output

29. def generateExpressions(expressions: Seq[Expression], doSubexpressionElimination: Boolean = false): Seq[GeneratedExpressionCode]

    

    Generates code for expressions.

    Generates code for expressions. If doSubexpressionElimination is true, subexpression elimination will be performed. Subexpression elimination assumes that the code will for each expression will be combined in the expressions order.

30. final def getClass(): Class[_]

    

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31. def getPlaceHolderToComments(): Map[String, String]

    

    get a map of the pair of a place holder and a corresponding comment

32. def getValue(input: String, dataType: DataType, ordinal: String): String

    

    Returns the specialized code to access a value from inputRow at ordinal.

33. def hashCode(): Int

    

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34. final def isInstanceOf[T0]: Boolean

    

    Definition Classes

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35. def isPrimitiveType(dt: DataType): Boolean

    

36. def isPrimitiveType(jt: String): Boolean

    

    Returns true if the Java type has a special accessor and setter in InternalRow.

37. def javaType(dt: DataType): String

    

    Returns the Java type for a DataType.

38. val mutableStates: ArrayBuffer[(String, String, String)]

    

    Holding expressions' mutable states like MonotonicallyIncreasingID.count as a 3-tuple: java type, variable name, code to init it.

    Holding expressions' mutable states like MonotonicallyIncreasingID.count as a 3-tuple: java type, variable name, code to init it. As an example, ("int", "count", "count = 0;") will produce code:

    private int count;

    as a member variable, and add

    count = 0;

    to the constructor.

    They will be kept as member variables in generated classes like SpecificProjection.

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

    

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40. final def notify(): Unit

    

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41. final def notifyAll(): Unit

    

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42. def primitiveTypeName(dt: DataType): String

    

43. def primitiveTypeName(jt: String): String

    

    Returns the name used in accessor and setter for a Java primitive type.

44. val primitiveTypes: Seq[String]

    

    List of java data types that have special accessors and setters in InternalRow.

45. val references: ArrayBuffer[Expression]

    

    Holding all the expressions those do not support codegen, will be evaluated directly.

46. def registerComment(text: String): String

    

    Register a comment and return the corresponding place holder

47. def setColumn(row: String, dataType: DataType, ordinal: Int, value: String): String

    

    Returns the code to update a column in Row for a given DataType.

48. def splitExpressions(row: String, expressions: Seq[String]): String

    

    Splits the generated code of expressions into multiple functions, because function has 64kb code size limit in JVM

    Splits the generated code of expressions into multiple functions, because function has 64kb code size limit in JVM

    row

    the variable name of row that is used by expressions

    expressions

    the codes to evaluate expressions.

49. val subExprEliminationExprs: HashMap[Expression, SubExprEliminationState]

    

50. val subExprResetVariables: ArrayBuffer[String]

    

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

    

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52. def toString(): String

    

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53. final def wait(): Unit

    

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

    

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

    

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    @throws( ... )