Package mondrian.rolap.agg

Class SegmentWithData

java.lang.Object

mondrian.rolap.agg.Segment

mondrian.rolap.agg.SegmentWithData

public class SegmentWithData
extends Segment

Extension to Segment with a data set.

Author:

jhyde

Nested Class Summary

Nested classes/interfaces inherited from class mondrian.rolap.agg.Segment

Segment.ExcludedRegion

Field Summary

Fields inherited from class mondrian.rolap.agg.Segment

columns, compoundPredicateList, constrainedColumnsBitKey, excludedRegions, measure, predicates, star

Constructor Summary

Constructors

Constructor	Description
SegmentWithData(Segment segment, SegmentDataset data, SegmentAxis[] axes)	Creates a SegmentWithData from an existing Segment.

Method Summary

Modifier and Type	Method	Description
protected void	describeAxes(StringBuilder buf, int i, boolean values)
int	getCellCount()	Returns the number of cells in this Segment, deducting cells in excluded regions.
Object	getCellValue(Object[] keys)	Retrieves the value at the location identified by keys.
final SegmentDataset	getData()	Returns the data set.

Methods inherited from class mondrian.rolap.agg.Segment

getColumns, getCompoundPredicateList, getConstrainedColumnsBitKey, getExcludedRegions, getHeader, getStar, isExcluded, matches, print, toString

Methods inherited from class java.lang.Object

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

Constructor Details

SegmentWithData

public SegmentWithData(Segment segment,
 SegmentDataset data,
 SegmentAxis[] axes)

Creates a SegmentWithData from an existing Segment.

Parameters:

segment - Segment (without data)

data - Data set

Method Details

describeAxes

protected void describeAxes(StringBuilder buf,
 int i,
 boolean values)

Overrides:

describeAxes in class Segment

getCellValue

public Object getCellValue(Object[] keys)

Retrieves the value at the location identified by keys.

Returns

• Util.nullValue if the cell value is null (because no fact table rows met those criteria);
• null if the value is not supposed to be in this segment (because one or more of the keys do not pass the axis criteria);
• the data value otherwise

See Also:

• make package-private?

getCellCount

public int getCellCount()

Returns the number of cells in this Segment, deducting cells in excluded regions.

This method may return a value which is slightly too low, or occasionally even negative. This occurs when a Segment has more than one excluded region, and those regions overlap. Cells which are in both regions will be counted twice.

Returns:

Number of cells in this Segment

getData

public final SegmentDataset getData()

Returns the data set.

WARNING: the returned SegmentDataset reference should not be modified; it is assumed to be invariant.

Returns:

The data reference