Package mondrian.rolap

Class RolapStatisticsCache

java.lang.Object

mondrian.rolap.RolapStatisticsCache

public class RolapStatisticsCache
extends Object

Provides and caches statistics.

Wrapper around a chain of StatisticsProviders, followed by a cache to store the results.

Constructor Summary

Constructors

Constructor	Description
RolapStatisticsCache(RolapStar star)

Method Summary

Modifier and Type	Method	Description
long	getColumnCardinality(MondrianDef.Relation relation, MondrianDef.Expression expression, long approxCardinality)
int	getColumnCardinality2(DataSource dataSource, Dialect dialect, String catalog, String schema, String table, String column)
long	getRelationCardinality(MondrianDef.Relation relation, String alias, long approxRowCount)

Methods inherited from class java.lang.Object

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

Constructor Detail

RolapStatisticsCache

public RolapStatisticsCache(RolapStar star)

Method Detail

getRelationCardinality

public long getRelationCardinality(MondrianDef.Relation relation,
                                   String alias,
                                   long approxRowCount)

getColumnCardinality

public long getColumnCardinality(MondrianDef.Relation relation,
                                 MondrianDef.Expression expression,
                                 long approxCardinality)

getColumnCardinality2

public int getColumnCardinality2(DataSource dataSource,
                                 Dialect dialect,
                                 String catalog,
                                 String schema,
                                 String table,
                                 String column)