Package net.sf.jasperreports.crosstabs.design

Class JRDesignCrosstabDataset

java.lang.Object

net.sf.jasperreports.engine.base.JRBaseElementDataset

net.sf.jasperreports.engine.design.JRDesignElementDataset

net.sf.jasperreports.crosstabs.design.JRDesignCrosstabDataset

All Implemented Interfaces:

Serializable, Cloneable, JRCrosstabDataset, DatasetRunHolder, JRChangeEventsSupport, JRCloneable, JRElementDataset

public class JRDesignCrosstabDataset
extends JRDesignElementDataset
implements JRCrosstabDataset

Input crosstab dataset implementation to be used at design time.

Author:

Lucian Chirita (lucianc@users.sourceforge.net)

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
protected boolean	dataPreSorted
static final String	PROPERTY_DATA_PRE_SORTED

Fields inherited from class net.sf.jasperreports.engine.design.JRDesignElementDataset

PROPERTY_DATASET_RESET_TYPE, PROPERTY_DATASET_RUN, PROPERTY_INCREMENT_GROUP, PROPERTY_INCREMENT_TYPE, PROPERTY_INCREMENT_WHEN_EXPRESSION, PROPERTY_RESET_GROUP, PROPERTY_RESET_TYPE

Fields inherited from class net.sf.jasperreports.engine.base.JRBaseElementDataset

datasetResetType, datasetRun, incrementGroup, incrementType, incrementWhenExpression, resetGroup

Constructor Summary

Constructors

Constructor	Description
JRDesignCrosstabDataset()	Creates a crosstab dataset.

Method Summary

Modifier and Type	Method	Description
void	collectExpressions(JRExpressionCollector collector)
boolean	isDataPreSorted()	Returns whether the crosstab data is pre-sorted according to the crosstab's groups.
void	setDataPreSorted(boolean dataPreSorted)	Sets the presorted flag for the dataset.

Methods inherited from class net.sf.jasperreports.engine.design.JRDesignElementDataset

clone, getEventSupport, setDatasetRun, setIncrementGroup, setIncrementType, setIncrementWhenExpression, setResetGroup, setResetType

Methods inherited from class net.sf.jasperreports.engine.base.JRBaseElementDataset

getDatasetResetType, getDatasetRun, getIncrementGroup, getIncrementType, getIncrementWhenExpression, getResetGroup

Methods inherited from class java.lang.Object

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

Methods inherited from interface net.sf.jasperreports.engine.JRCloneable

clone

Methods inherited from interface net.sf.jasperreports.engine.JRElementDataset

getDatasetResetType, getDatasetRun, getIncrementGroup, getIncrementType, getIncrementWhenExpression, getResetGroup

Field Details

PROPERTY_DATA_PRE_SORTED

public static final String PROPERTY_DATA_PRE_SORTED

See Also:

• Constant Field Values

dataPreSorted

protected boolean dataPreSorted

Constructor Details

JRDesignCrosstabDataset

public JRDesignCrosstabDataset()

Creates a crosstab dataset.

Method Details

collectExpressions

public void collectExpressions(JRExpressionCollector collector)

Specified by:

collectExpressions in interface JRElementDataset

Overrides:

collectExpressions in class JRBaseElementDataset

isDataPreSorted

public boolean isDataPreSorted()

Description copied from interface: JRCrosstabDataset

Returns whether the crosstab data is pre-sorted according to the crosstab's groups.

The crosstab calculation engine can optimize the calculations if the data is sorted by the row groups and column groups. For example, if there are two row groups R1 and R2 (subgroup of R1) and three column groups C1, C2 and C3 the data should be sorted by R1, R2, C1, C2, C3.

Specified by:

isDataPreSorted in interface JRCrosstabDataset

Returns:

whether the crosstab data is pre-sorted

setDataPreSorted

public void setDataPreSorted(boolean dataPreSorted)

Sets the presorted flag for the dataset.

Parameters:

dataPreSorted - whether the input data is presorted

See Also:

• JRCrosstabDataset.isDataPreSorted()