edu.ksu.cis.kdd.data
Class LocalDatabaseTally

java.lang.Object
  edu.ksu.cis.kdd.data.DatabaseTally
      edu.ksu.cis.kdd.data.LocalDatabaseTally

All Implemented Interfaces:

Tally

public class LocalDatabaseTally

extends DatabaseTally

Author:

Roby Joehanes

Field Summary

protected boolean	alreadyPrefiltered
protected Tuple[]	joinCache
protected java.util.TreeSet	tablesInvolved

Fields inherited from class edu.ksu.cis.kdd.data.DatabaseTally

allAttributeIndices, attributeCache, attributeIndices, attributes, db, numTables, tableBaseIndex, tables, tallies

Method Summary

Tally	createSubTally(int[] indices, int[] values)
Tally	createSubTally(int attr, int value) Create a sub tally that is filtered according the attribute number attr with its value.
protected Tuple[]	join(Tuple[] t1, Tuple[] t2)
protected Tuple[]	joinAll()
int	size()
int	tally(int[] indices, int[] values)
int	tally(int attr, int value)

Methods inherited from class edu.ksu.cis.kdd.data.DatabaseTally

dumpTallyStatus, getAllAttributeIndices, getAtttribute, getRelevantAttributeIndices, getTables, getTallies, getUnderlyingData, groupedTally, groupedTally, preprocess, setUnderlyingData, toString

Methods inherited from class java.lang.Object

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

Field Detail

alreadyPrefiltered

protected boolean alreadyPrefiltered

tablesInvolved

protected java.util.TreeSet tablesInvolved

joinCache

protected Tuple[] joinCache

Method Detail

createSubTally

public Tally createSubTally(int[] indices,
                            int[] values)

See Also:

edu.ksu.cis.kdd.data.TallyInterface#createSubTally(int[], int[])

size

public int size()

See Also:

edu.ksu.cis.kdd.data.TallyInterface#size()

tally

public int tally(int[] indices,
                 int[] values)

tally

public int tally(int attr,
                 int value)

Specified by:

tally in interface Tally

Specified by:

tally in class DatabaseTally

joinAll

protected Tuple[] joinAll()

join

protected Tuple[] join(Tuple[] t1,
                       Tuple[] t2)

createSubTally

public Tally createSubTally(int attr,
                            int value)

Create a sub tally that is filtered according the attribute number attr with its value. This does NOT propagate the ref keys -- too expensive. Doing it latter in tally phase

Parameters:

attr -

value -

Returns:

Prefiltered tally