mondrian.rolap
Class RolapCacheRegion

java.lang.Object
  mondrian.rolap.RolapCacheRegion

public class RolapCacheRegion
extends Object

A RolapCacheRegion represents a region of multidimensional space in the cache.

The region is represented in terms of the columns of a given RolapStar, and constraints on those columns.

Compare with CacheControl.CellRegion: a CellRegion is in terms of Member objects (logical); whereas a RolapCacheRegion is in terms of columns (physical).

Constructor Summary

RolapCacheRegion(RolapStar star, List<RolapStar.Measure> starMeasureList)

Method Summary

void	addPredicate(RolapStar.Column column, StarColumnPredicate predicate) Adds a predicate which applies to a single column.
void	addPredicate(StarPredicate predicate) Adds a predicate which applies to multiple columns.
BitKey	getConstrainedColumnsBitKey()
StarColumnPredicate	getPredicate(int columnOrdinal) Returns the predicate associated with the columnOrdinalth column.
Collection<StarPredicate>	getPredicates() Returns a collection of all multi-column predicates.

Methods inherited from class java.lang.Object

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

Constructor Detail

RolapCacheRegion

public RolapCacheRegion(RolapStar star,
                        List<RolapStar.Measure> starMeasureList)

Method Detail

getConstrainedColumnsBitKey

public BitKey getConstrainedColumnsBitKey()

addPredicate

public void addPredicate(RolapStar.Column column,
                         StarColumnPredicate predicate)

Adds a predicate which applies to a single column.

Parameters:

column - Constrained column

predicate - Predicate

getPredicate

public StarColumnPredicate getPredicate(int columnOrdinal)

Returns the predicate associated with the columnOrdinalth column.

Parameters:

columnOrdinal - Column ordinal

Returns:

Predicate, or null if not constrained

addPredicate

public void addPredicate(StarPredicate predicate)

Adds a predicate which applies to multiple columns.

The typical example of a multi-column predicate is a member constraint. For example, the constraint "m between 1997.Q3 and 1998.Q2" translates into "year = 1997 and quarter >= Q3 or year = 1998 and quarter <= Q2".

Parameters:

predicate - Predicate

getPredicates

public Collection<StarPredicate> getPredicates()

Returns a collection of all multi-column predicates.

Returns:

Collection of all multi-column constraints