mondrian.rolap.agg
Class DenseSegmentDataset

java.lang.Object
  mondrian.rolap.agg.DenseSegmentDataset

All Implemented Interfaces:

java.lang.Iterable<java.util.Map.Entry<CellKey,java.lang.Object>>, SegmentDataset

 class DenseSegmentDataset
extends java.lang.Object
implements SegmentDataset

A DenseSegmentDataset is a means of storing segment values which is suitable when most of the combinations of keys have a value present.

The storage requirements are as follows. Table requires 1 word per cell.

Since:

21 March, 2002

Version:

$Id: //open/mondrian/src/main/mondrian/rolap/agg/DenseSegmentDataset.java#11 $

Author:

jhyde

Constructor Summary

DenseSegmentDataset(Segment segment, java.lang.Object[] values)
Creates a DenseSegmentDataset.

Method Summary

java.lang.Object	get(CellKey key) Returns the value at a given coordinate.
double	getBytes() Returns the number of bytes occupied by this dataset.
java.util.Iterator<java.util.Map.Entry<CellKey,java.lang.Object>>	iterator()
void	put(CellKey key, java.lang.Object value)
(package private) void	set(int k, java.lang.Object o) Sets the value a given ordinal.

Methods inherited from class java.lang.Object

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

Constructor Detail

DenseSegmentDataset

DenseSegmentDataset(Segment segment,
                    java.lang.Object[] values)

Creates a DenseSegmentDataset.

Parameters:

segment - Segment

values - Array of values, one for each possible coordinate

Method Detail

get

public java.lang.Object get(CellKey key)

Description copied from interface: SegmentDataset

Returns the value at a given coordinate.

Specified by:

get in interface SegmentDataset

Parameters:

key - Coordinate position

Returns:

Value

getBytes

public double getBytes()

Description copied from interface: SegmentDataset

Returns the number of bytes occupied by this dataset.

Specified by:

getBytes in interface SegmentDataset

Returns:

number of bytes

put

public void put(CellKey key,
                java.lang.Object value)

Specified by:

put in interface SegmentDataset

iterator

public java.util.Iterator<java.util.Map.Entry<CellKey,java.lang.Object>> iterator()

Specified by:

iterator in interface java.lang.Iterable<java.util.Map.Entry<CellKey,java.lang.Object>>

set

void set(int k,
         java.lang.Object o)

Sets the value a given ordinal.

Parameters:

k - Ordinal

o - Value