mondrian.rolap

Class RolapSetEvaluator

java.lang.Object

mondrian.rolap.RolapSetEvaluator

All Implemented Interfaces:

TupleList.PositionCallback, Evaluator.SetEvaluator

class RolapSetEvaluator
extends Object
implements Evaluator.SetEvaluator, TupleList.PositionCallback

Evaluation context to be able to expand a generic expression that returns a set

Since:

September 14, 2012

Author:

pedro alves

Constructor Summary

Constructors

Constructor and Description
RolapSetEvaluator(RolapResult.RolapResultEvaluatorRoot rrer, Exp exp) Creates a RolapNamedSetEvaluator.

Method Summary

Modifier and Type	Method and Description
Member	currentMember() Returns the current member in the named set.
int	currentOrdinal() Returns the ordinal of the current member or tuple in the named set.
Member[]	currentTuple() Returns the current tuple in the named set.
TupleIterable	evaluateTupleIterable() Returns an iterator over the tuples of the named set.
void	onPosition(int index)

Methods inherited from class java.lang.Object

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

Constructor Detail

RolapSetEvaluator

public RolapSetEvaluator(RolapResult.RolapResultEvaluatorRoot rrer,
                         Exp exp)

Creates a RolapNamedSetEvaluator.

Parameters:

rrer - Evaluation root context

exp - Expression

Method Detail

evaluateTupleIterable

public TupleIterable evaluateTupleIterable()

Description copied from interface: Evaluator.SetEvaluator

Returns an iterator over the tuples of the named set. Applicable if the named set is a set of tuples.

The iterator from this iterable maintains the current ordinal property required for the methods Evaluator.SetEvaluator.currentOrdinal() and Evaluator.SetEvaluator.currentTuple().

Specified by:

evaluateTupleIterable in interface Evaluator.SetEvaluator

Returns:

Iterable over the tuples of the set

currentOrdinal

public int currentOrdinal()

Description copied from interface: Evaluator.SetEvaluator

Returns the ordinal of the current member or tuple in the named set.

Specified by:

currentOrdinal in interface Evaluator.SetEvaluator

Returns:

Ordinal of the current member or tuple in the named set

onPosition

public void onPosition(int index)

Specified by:

onPosition in interface TupleList.PositionCallback

currentTuple

public Member[] currentTuple()

Description copied from interface: Evaluator.SetEvaluator

Returns the current tuple in the named set.

Applicable if the named set is a set of tuples.

Specified by:

currentTuple in interface Evaluator.SetEvaluator

Returns:

Current tuple.

currentMember

public Member currentMember()

Description copied from interface: Evaluator.SetEvaluator

Returns the current member in the named set.

Applicable if the named set is a set of members.

Specified by:

currentMember in interface Evaluator.SetEvaluator

Returns:

Current member