Package net.sf.jasperreports.crosstabs.fill.calculation

Class BucketingService

java.lang.Object

net.sf.jasperreports.crosstabs.fill.calculation.BucketingService

Direct Known Subclasses:

CrosstabBucketingService, MultiAxisDataService.MultiAxisBucketingService

public abstract class BucketingService
extends Object

Bidimensional bucketing engine.

Author:

Lucian Chirita (lucianc@users.sourceforge.net)

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
protected class	BucketingService.BucketListMap
class	BucketingService.BucketMap
protected class	BucketingService.BucketMapMap
protected static class	BucketingService.MapEntry

Field Summary

Fields

Modifier and Type	Field	Description
protected final BucketDefinition[]	allBuckets
protected final int	bucketMeasureLimit
protected final BucketDefinition[][]	buckets
protected final BucketingService.BucketMap	bucketValueMap
protected final int	colBucketCount
protected final BucketingService.BucketMap	columnBucketMap
protected long	dataCount
protected static final byte	DIMENSION_COLUMN
protected static final byte	DIMENSION_ROW
protected static final int	DIMENSIONS
static final String	EXCEPTION_MESSAGE_KEY_BUCKET_DATA_PROCESSED
static final String	EXCEPTION_MESSAGE_KEY_BUCKET_MEASURE_LIMIT
protected final int[]	measureIndexes
protected final MeasureDefinition[]	measures
protected final int	origMeasureCount
protected boolean	processed
static final String	PROPERTY_BUCKET_MEASURE_LIMIT
protected final boolean[][]	retrieveTotal
protected final int	rowBucketCount
protected int[]	rowRetrColMax
protected int	rowRetrTotalMax
protected int	rowRetrTotalMin
protected boolean[]	rowRetrTotals
protected final BucketingServiceContext	serviceContext
protected final boolean	sorted
protected final MeasureDefinition.MeasureValue[]	zeroMeasureValues
protected final MeasureDefinition.MeasureValue[]	zeroUserMeasureValues

Constructor Summary

Constructors

Constructor	Description
BucketingService(BucketingServiceContext serviceContext, List<BucketDefinition> rowBuckets, List<BucketDefinition> columnBuckets, List<MeasureDefinition> measures, boolean sorted, boolean[][] retrieveTotal)	Creates a crosstab bucketing engine.

Method Summary

Modifier and Type	Method	Description
void	addData(Object[] bucketValues, Object[] measureValues)	Feeds data to the engine.
protected void	addMeasure(MeasureDefinition measure, int index, List<MeasureDefinition> measuresList, List<Integer> measureIndexList)
protected void	bucketMeasuresCreated()
protected void	checkBucketMeasureCount(int bucketMeasureCount)
protected void	checkTotals()
void	clear()	Clears all the accumulated and computed data.
protected void	computeColumnTotal(BucketingService.BucketMap bucketMap)
protected void	computeRowTotals(BucketingService.BucketMap bucketMap)
protected void	computeTotals(BucketingService.BucketMap bucketMap)
protected BucketingService.BucketMap	createBucketMap(int level)
protected BucketingService.BucketMapMap	createBucketMapMap(int level)
protected BucketingService.BucketMapMap	createRowTotalsBucketMap()
protected BucketDefinition.Bucket[]	getBucketValues(Object[] bucketValues)
MeasureDefinition.MeasureValue[]	getGrandTotals()	Returns the grand total measure values.
MeasureDefinition.MeasureValue[]	getMeasureValues(BucketDefinition.Bucket[] bucketValues)	Returns the measure values for a set of bucket values.
BucketDefinition[]	getRowBuckets()
MeasureDefinition.MeasureValue[]	getUserMeasureValues(MeasureDefinition.MeasureValue[] values)
MeasureDefinition.MeasureValue[]	getZeroUserMeasureValues()
boolean	hasData()	Checks whether there is any data accumulated by the engine.
protected MeasureDefinition.MeasureValue[]	initMeasureValues()
protected MeasureDefinition.MeasureValue[]	initUserMeasureValues()
void	processData()	Processes the data which was fed to the engine.
protected void	sumVals(MeasureDefinition.MeasureValue[] totals, MeasureDefinition.MeasureValue[] vals)

Methods inherited from class java.lang.Object

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

Field Details

EXCEPTION_MESSAGE_KEY_BUCKET_MEASURE_LIMIT

public static final String EXCEPTION_MESSAGE_KEY_BUCKET_MEASURE_LIMIT

See Also:

• Constant Field Values

EXCEPTION_MESSAGE_KEY_BUCKET_DATA_PROCESSED

public static final String EXCEPTION_MESSAGE_KEY_BUCKET_DATA_PROCESSED

See Also:

• Constant Field Values

PROPERTY_BUCKET_MEASURE_LIMIT

public static final String PROPERTY_BUCKET_MEASURE_LIMIT

See Also:

• Constant Field Values

DIMENSION_ROW

protected static final byte DIMENSION_ROW

See Also:

• Constant Field Values

DIMENSION_COLUMN

protected static final byte DIMENSION_COLUMN

See Also:

• Constant Field Values

DIMENSIONS

protected static final int DIMENSIONS

See Also:

• Constant Field Values

serviceContext

protected final BucketingServiceContext serviceContext

allBuckets

protected final BucketDefinition[] allBuckets

buckets

protected final BucketDefinition[][] buckets

rowBucketCount

protected final int rowBucketCount

colBucketCount

protected final int colBucketCount

retrieveTotal

protected final boolean[][] retrieveTotal

rowRetrTotals

protected boolean[] rowRetrTotals

rowRetrTotalMin

protected int rowRetrTotalMin

rowRetrTotalMax

protected int rowRetrTotalMax

rowRetrColMax

protected int[] rowRetrColMax

measures

protected final MeasureDefinition[] measures

origMeasureCount

protected final int origMeasureCount

measureIndexes

protected final int[] measureIndexes

sorted

protected final boolean sorted

bucketValueMap

protected final BucketingService.BucketMap bucketValueMap

columnBucketMap

protected final BucketingService.BucketMap columnBucketMap

dataCount

protected long dataCount

processed

protected boolean processed

zeroMeasureValues

protected final MeasureDefinition.MeasureValue[] zeroMeasureValues

zeroUserMeasureValues

protected final MeasureDefinition.MeasureValue[] zeroUserMeasureValues

bucketMeasureLimit

protected final int bucketMeasureLimit

Constructor Details

BucketingService

public BucketingService(BucketingServiceContext serviceContext,
 List<BucketDefinition> rowBuckets,
 List<BucketDefinition> columnBuckets,
 List<MeasureDefinition> measures,
 boolean sorted,
 boolean[][] retrieveTotal)

Creates a crosstab bucketing engine.

Parameters:

serviceContext - the bucketing service context

rowBuckets - the row bucket definitions

columnBuckets - the column bucket definitions

measures - the measure definitions

sorted - whether the data is presorted

retrieveTotal - totals to retrieve along with the cell values

Method Details

checkTotals

protected void checkTotals()

clear

public void clear()

Clears all the accumulated and computed data.

createBucketMap

protected BucketingService.BucketMap createBucketMap(int level)

createBucketMapMap

protected BucketingService.BucketMapMap createBucketMapMap(int level)

createRowTotalsBucketMap

protected BucketingService.BucketMapMap createRowTotalsBucketMap()

addMeasure

protected void addMeasure(MeasureDefinition measure,
 int index,
 List<MeasureDefinition> measuresList,
 List<Integer> measureIndexList)

addData

public void addData(Object[] bucketValues,
 Object[] measureValues)
             throws JRException

Feeds data to the engine.

Parameters:

bucketValues - the bucket values

measureValues - the measure values

Throws:

JRException

bucketMeasuresCreated

protected void bucketMeasuresCreated()

getBucketValues

protected BucketDefinition.Bucket[] getBucketValues(Object[] bucketValues)

initMeasureValues

protected MeasureDefinition.MeasureValue[] initMeasureValues()

initUserMeasureValues

protected MeasureDefinition.MeasureValue[] initUserMeasureValues()

processData

public void processData()
                 throws JRException

Processes the data which was fed to the engine.

This method should be called after the data has been exhausted. The processing consists of total calculations and crosstab table creation.

Throws:

JRException

hasData

public boolean hasData()

Checks whether there is any data accumulated by the engine.

Returns:

true if and only if the engine has any accumulated data

getMeasureValues

public MeasureDefinition.MeasureValue[] getMeasureValues(BucketDefinition.Bucket[] bucketValues)

Returns the measure values for a set of bucket values.

Parameters:

bucketValues - the bucket values

Returns:

the measure values corresponding to the bucket values

getUserMeasureValues

public MeasureDefinition.MeasureValue[] getUserMeasureValues(MeasureDefinition.MeasureValue[] values)

getZeroUserMeasureValues

public MeasureDefinition.MeasureValue[] getZeroUserMeasureValues()

getGrandTotals

public MeasureDefinition.MeasureValue[] getGrandTotals()

Returns the grand total measure values.

Returns:

the grand total measure values

computeTotals

protected void computeTotals(BucketingService.BucketMap bucketMap)
                      throws JRException

Throws:

JRException

sumVals

protected void sumVals(MeasureDefinition.MeasureValue[] totals,
 MeasureDefinition.MeasureValue[] vals)
                throws JRException

Throws:

JRException

computeColumnTotal

protected void computeColumnTotal(BucketingService.BucketMap bucketMap)
                           throws JRException

Throws:

JRException

computeRowTotals

protected void computeRowTotals(BucketingService.BucketMap bucketMap)
                         throws JRException

Throws:

JRException

checkBucketMeasureCount

protected void checkBucketMeasureCount(int bucketMeasureCount)

getRowBuckets

public BucketDefinition[] getRowBuckets()