mondrian.calc.impl
Class GenericIterCalc

java.lang.Object
  mondrian.calc.impl.AbstractCalc
      mondrian.calc.impl.GenericIterCalc

All Implemented Interfaces:

Calc, IterCalc, ListCalc

public abstract class GenericIterCalc
extends AbstractCalc
implements ListCalc, IterCalc

Adapter which computes a set expression and converts it to any list or iterable type.

Since:

Nov 7, 2008

Author:

jhyde

Field Summary

Fields inherited from class mondrian.calc.impl.AbstractCalc

exp, type

Constructor Summary

protected	GenericIterCalc(Exp exp) Creates a GenericIterCalc without specifying child calculated expressions.
protected	GenericIterCalc(Exp exp, Calc[] calcs) Creates an GenericIterCalc.

Method Summary

TupleIterable	evaluateIterable(Evaluator evaluator) Evaluates an expression to yield an Iterable of members or tuples.
TupleList	evaluateList(Evaluator evaluator) Evaluates an expression to yield a list of tuples.
SetType	getType() Returns the type of this expression.

Methods inherited from class mondrian.calc.impl.AbstractCalc

accept, anyDepends, anyDependsButFirst, butDepends, collectArguments, dependsOn, getArguments, getCalcs, getName, getResultStyle, isWrapperFor, simplifyEvaluator, unwrap

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface mondrian.calc.Calc

accept, dependsOn, evaluate, getResultStyle, isWrapperFor, unwrap

Constructor Detail

GenericIterCalc

protected GenericIterCalc(Exp exp)

Creates a GenericIterCalc without specifying child calculated expressions.

Subclass should override AbstractCalc.getCalcs().

Parameters:

exp - Source expression

GenericIterCalc

protected GenericIterCalc(Exp exp,
                          Calc[] calcs)

Creates an GenericIterCalc.

Parameters:

exp - Source expression

calcs - Child compiled expressions

Method Detail

getType

public SetType getType()

Description copied from interface: Calc

Returns the type of this expression.

Specified by:

getType in interface Calc

Overrides:

getType in class AbstractCalc

evaluateList

public TupleList evaluateList(Evaluator evaluator)

Description copied from interface: ListCalc

Evaluates an expression to yield a list of tuples.

The list is immutable if Calc.getResultStyle() yields ResultStyle.MUTABLE_LIST. Otherwise, the caller must not modify the list.

Specified by:

evaluateList in interface ListCalc

Parameters:

evaluator - Evaluation context

Returns:

A list of tuples, never null.

evaluateIterable

public TupleIterable evaluateIterable(Evaluator evaluator)

Description copied from interface: IterCalc

Evaluates an expression to yield an Iterable of members or tuples.

The Iterable is immutable.

Specified by:

evaluateIterable in interface IterCalc

Parameters:

evaluator - Evaluation context

Returns:

An Iterable of members or tuples, never null.