Package mondrian.calc.impl

Class GenericCalc

java.lang.Object
mondrian.calc.impl.AbstractCalc
mondrian.calc.impl.GenericCalc
All Implemented Interfaces:
BooleanCalc, Calc, DateTimeCalc, DimensionCalc, DoubleCalc, HierarchyCalc, IntegerCalc, LevelCalc, MemberCalc, StringCalc, TupleCalc, VoidCalc
Direct Known Subclasses:
AbstractVoidCalc, AggregateFunDef.AggregateCalc, CacheCalc, ConstantCalc, MemberArrayValueCalc, MemberValueCalc, TupleValueCalc, ValueCalc
public abstract class GenericCalc extends AbstractCalc implements TupleCalc, StringCalc, IntegerCalc, DoubleCalc, BooleanCalc, DateTimeCalc, VoidCalc, MemberCalc, LevelCalc, HierarchyCalc, DimensionCalc
Adapter which computes a scalar or tuple expression and converts it to any required type.
Since:
Sep 26, 2005
Author:
jhyde
See Also:

  • Constructor Details

    • GenericCalc

      protected GenericCalc(Exp exp)
      Creates a GenericCalc without specifying child calculated expressions.

      Subclass should override AbstractCalc.getCalcs().

      Parameters:
      exp - Source expression

    • GenericCalc

      protected GenericCalc(Exp exp, Calc[] calcs)
      Creates an GenericCalc.
      Parameters:
      exp - Source expression
      calcs - Child compiled expressions

  • Method Details

    • evaluateTuple

      public Member[] evaluateTuple(Evaluator evaluator)
      Description copied from interface: TupleCalc
      Evaluates this expression to yield a tuple.

      A tuple cannot contain any null members. If any of the members is null, this method must return a null.

      Specified by:
      evaluateTuple in interface TupleCalc
      Parameters:
      evaluator - Evaluation context
      Returns:
      an array of members, or null to represent the null tuple

    • evaluateString

      public String evaluateString(Evaluator evaluator)
      Description copied from interface: StringCalc
      Evaluates this expression to yield a String value.
      Specified by:
      evaluateString in interface StringCalc
      Parameters:
      evaluator - Evaluation context
      Returns:
      evaluation result

    • evaluateInteger

      public int evaluateInteger(Evaluator evaluator)
      Description copied from interface: IntegerCalc
      Evaluates this expression to yield an int value. If the result is null, returns the special FunUtil.IntegerNull value.
      Specified by:
      evaluateInteger in interface IntegerCalc
      Parameters:
      evaluator - Evaluation context
      Returns:
      evaluation result

    • evaluateDouble

      public double evaluateDouble(Evaluator evaluator)
      Description copied from interface: DoubleCalc
      Evaluates this expression to yield a double value. If the result is null, returns the special FunUtil.DoubleNull value.
      Specified by:
      evaluateDouble in interface DoubleCalc
      Parameters:
      evaluator - Evaluation context
      Returns:
      evaluation result

    • numberToDouble

      public static double numberToDouble(Number number)

    • evaluateBoolean

      public boolean evaluateBoolean(Evaluator evaluator)
      Description copied from interface: BooleanCalc
      Evaluates this expression to yield a boolean value. If the result is null, returns the special FunUtil.BooleanNull value.
      Specified by:
      evaluateBoolean in interface BooleanCalc
      Parameters:
      evaluator - Evaluation context
      Returns:
      evaluation result

    • evaluateDateTime

      public Date evaluateDateTime(Evaluator evaluator)
      Description copied from interface: DateTimeCalc
      Evaluates this expression to yield a Date value.
      Specified by:
      evaluateDateTime in interface DateTimeCalc
      Parameters:
      evaluator - Evaluation context
      Returns:
      evaluation result

    • evaluateVoid

      public void evaluateVoid(Evaluator evaluator)
      Specified by:
      evaluateVoid in interface VoidCalc

    • evaluateMember

      public Member evaluateMember(Evaluator evaluator)
      Description copied from interface: MemberCalc
      Evaluates this expression to yield a member.

      May return the null member (see Hierarchy.getNullMember()) but never null.

      Specified by:
      evaluateMember in interface MemberCalc
      Parameters:
      evaluator - Evaluation context
      Returns:
      a member

    • evaluateLevel

      public Level evaluateLevel(Evaluator evaluator)
      Description copied from interface: LevelCalc
      Evaluates this expression to yield a level.

      Never returns null.

      Specified by:
      evaluateLevel in interface LevelCalc
      Parameters:
      evaluator - Evaluation context
      Returns:
      a level

    • evaluateHierarchy

      public Hierarchy evaluateHierarchy(Evaluator evaluator)
      Description copied from interface: HierarchyCalc
      Evaluates this expression to yield a hierarchy.

      Never returns null.

      Specified by:
      evaluateHierarchy in interface HierarchyCalc
      Parameters:
      evaluator - Evaluation context
      Returns:
      a hierarchy

    • evaluateDimension

      public Dimension evaluateDimension(Evaluator evaluator)
      Description copied from interface: DimensionCalc
      Evaluates this expression to yield a dimension.

      Never returns null.

      Specified by:
      evaluateDimension in interface DimensionCalc
      Parameters:
      evaluator - Evaluation context
      Returns:
      a dimension