mondrian.olap
Interface Dimension

All Superinterfaces:

OlapElement

All Known Implementing Classes:

DimensionBase, RolapCubeDimension, RolapDimension

public interface Dimension
extends OlapElement

A Dimension represents a dimension of a cube.

Field Summary

static String	MEASURES_NAME
static String	MEASURES_UNIQUE_NAME

Method Summary

DimensionType	getDimensionType() Returns the type of this dimension (DimensionType.StandardDimension or DimensionType.TimeDimension
Hierarchy[]	getHierarchies() Returns an array of the hierarchies which belong to this dimension.
int	getOrdinal(Cube cube) Returns dimension's ordinal within a given cube.
Schema	getSchema() Returns the schema this dimension belongs to.
boolean	isHighCardinality() Returns whether the dimension should be considered as a "high cardinality" or "low cardinality" according to cube definition.
boolean	isMeasures() Returns whether this is the [Measures] dimension.

Methods inherited from interface mondrian.olap.OlapElement

getCaption, getDescription, getDimension, getHierarchy, getName, getQualifiedName, getUniqueName, lookupChild, lookupChild

Field Detail

MEASURES_UNIQUE_NAME

static final String MEASURES_UNIQUE_NAME

See Also:

Constant Field Values

MEASURES_NAME

static final String MEASURES_NAME

See Also:

Constant Field Values

Method Detail

getHierarchies

Hierarchy[] getHierarchies()

Returns an array of the hierarchies which belong to this dimension.

isMeasures

boolean isMeasures()

Returns whether this is the [Measures] dimension.

getDimensionType

DimensionType getDimensionType()

Returns the type of this dimension (DimensionType.StandardDimension or DimensionType.TimeDimension

getOrdinal

int getOrdinal(Cube cube)

Returns dimension's ordinal within a given cube. The [Measures] always has ordinal 0.

getSchema

Schema getSchema()

Returns the schema this dimension belongs to.

isHighCardinality

boolean isHighCardinality()

Returns whether the dimension should be considered as a "high cardinality" or "low cardinality" according to cube definition. Mondrian tends to evaluate high cardinality dimensions using iterators rather than lists, avoiding instantiating the dimension in memory.

Returns:

whether this dimension is high-cardinality