net.sf.jasperreports.crosstabs

Interface JRCrosstab

All Superinterfaces:

Cloneable, JRBoxContainer, JRChild, JRCloneable, JRCommonElement, JRElement, JRIdentifiable, JRPropertiesHolder, JRStyleContainer, JRVisitable

All Known Implementing Classes:

JRBaseCrosstab, JRDesignCrosstab, JRFillCrosstab

public interface JRCrosstab
extends JRElement, JRBoxContainer

Crosstab element interface.

Version:

$Id: JRCrosstab.java 5180 2012-03-29 13:23:12Z teodord $

Author:

Lucian Chirita (lucianc@users.sourceforge.net)

Field Summary

Fields

Modifier and Type	Field and Description
static int	DEFAULT_COLUMN_BREAK_OFFSET The default offset used for column breaks.
static String	PROPERTY_IGNORE_WIDTH A property that provides a default value for the ignore width crosstab flag.
static String	VARIABLE_COLUMN_COUNT Name of the built-in column count variable.
static String	VARIABLE_ROW_COUNT Name of the built-in row count variable.

Method Summary

Methods

Modifier and Type	Method and Description
JRCrosstabCell[][]	getCells() Returns the data cell matrix.
int	getColumnBreakOffset() Returns the column break offset.
JRCrosstabColumnGroup[]	getColumnGroups() Returns the column groups of the crosstab.
JRCrosstabDataset	getDataset() Returns the input dataset of the crosstab.
JRElement	getElementByKey(String key) Searches for an element inside all crosstab cells.
JRCellContents	getHeaderCell() Returns a cell which will be rendered at the upper-left corner of the crosstab.
int	getId() Returns the ID of the crosstab.
Boolean	getIgnoreWidth() Returns the ignore width flag for the crosstab.
JRCrosstabMeasure[]	getMeasures() Returns the crosstab measures.
JRCrosstabParameter[]	getParameters() Returns the crosstab parameters.
JRExpression	getParametersMapExpression() Returns the parameters map expression.
JRCrosstabRowGroup[]	getRowGroups() Returns the row groups of the crosstab.
RunDirectionEnum	getRunDirectionValue() Retrieves the run direction of this crosstab
JRVariable[]	getVariables() Returns the variables defined for the crosstab.
JRCellContents	getWhenNoDataCell() Returns a cell which will be rendered when no data was fed to the crosstab.
boolean	isRepeatColumnHeaders() Returns whether to repeat the column headers after a row break.
boolean	isRepeatRowHeaders() Returns whether to repeat the row headers after a column break.
void	setIgnoreWidth(boolean ignoreWidth) Set the ignore width crosstab flag.
void	setIgnoreWidth(Boolean ignoreWidth) Set the ignore width crosstab flag.
void	setRunDirection(RunDirectionEnum runDirectionEnum) Sets the run direction of the crosstab.

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

clone, collectExpressions, getElementGroup, getKey, getPositionTypeValue, getPrintWhenExpression, getPrintWhenGroupChanges, getPropertyExpressions, getStretchTypeValue, getX, getY, isPrintInFirstWholeBand, isPrintRepeatedValues, isPrintWhenDetailOverflows, isRemoveLineWhenBlank, setPositionType, setPrintInFirstWholeBand, setPrintRepeatedValues, setPrintWhenDetailOverflows, setRemoveLineWhenBlank, setStretchType, setWidth, setX

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

clone

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

visit

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

clone

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

getBackcolor, getForecolor, getHeight, getModeValue, getOwnBackcolor, getOwnForecolor, getOwnModeValue, getWidth, setBackcolor, setForecolor, setMode

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

getDefaultStyleProvider, getStyle, getStyleNameReference

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

getParentProperties, getPropertiesMap, hasProperties

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

getUUID

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

getDefaultLineColor, getLineBox

Field Detail

DEFAULT_COLUMN_BREAK_OFFSET

static final int DEFAULT_COLUMN_BREAK_OFFSET

The default offset used for column breaks.

See Also:

getColumnBreakOffset(), Constant Field Values

VARIABLE_ROW_COUNT

static final String VARIABLE_ROW_COUNT

Name of the built-in row count variable.

See Also:

Constant Field Values

VARIABLE_COLUMN_COUNT

static final String VARIABLE_COLUMN_COUNT

Name of the built-in column count variable.

See Also:

Constant Field Values

PROPERTY_IGNORE_WIDTH

static final String PROPERTY_IGNORE_WIDTH

A property that provides a default value for the ignore width crosstab flag.

The property can be set globally and at report level. A flag/attribute set for a crosstab will override the property.

The property value set at report level will be used when the crosstab flag is not set. If neither the crosstab flag and report level property exist and the JRParameter.IS_IGNORE_PAGINATION parameter is set to true, the crosstab width is ignored. Otherwise, the global property value will be used.

The default global value of this property is false, i.e. crosstabs will break by default at the width set for the crosstab report element.

See Also:

setIgnoreWidth(Boolean), Constant Field Values

Method Detail

getId

int getId()

Returns the ID of the crosstab.

The ID is generated when the report is compiled and is used internally.

Returns:

the ID of the crosstab

getDataset

JRCrosstabDataset getDataset()

Returns the input dataset of the crosstab.

Returns:

the input dataset of the crosstab

getRowGroups

JRCrosstabRowGroup[] getRowGroups()

Returns the row groups of the crosstab.

Returns:

the row groups

getColumnGroups

JRCrosstabColumnGroup[] getColumnGroups()

Returns the column groups of the crosstab.

Returns:

the column groups

getMeasures

JRCrosstabMeasure[] getMeasures()

Returns the crosstab measures.

Returns:

the crosstab measures

getColumnBreakOffset

int getColumnBreakOffset()

Returns the column break offset.

When the crosstab columns do not fit the width, the crosstab breaks the columns and prints the ones that don't fit after printing the first set of columns for all rows. This method returns the offset to be used when continuing the printing after a column break.

Returns:

the column break offset

isRepeatColumnHeaders

boolean isRepeatColumnHeaders()

Returns whether to repeat the column headers after a row break.

Returns:

whether to repeat the column headers after a row break

isRepeatRowHeaders

boolean isRepeatRowHeaders()

Returns whether to repeat the row headers after a column break.

Returns:

whether to repeat the row headers after a column break

getCells

JRCrosstabCell[][] getCells()

Returns the data cell matrix.

A crosstab can have multiple data cells for row/groups totals. These cells are organized in a (rowGroupCount + 1) x (columnGroupCount + 1) matrix as following:

• the row index of a cell is
  • the row group index, if the cell corresponds to a total row
  • rowGroupCount, otherwise
• the column index of a cell is
  • the column group index, if the cell corresponds to a total column
  • columnGroupCount, otherwise

E.g. if the crosstab has Country and City (subgroup of Country) row groups and Year and Month column groups, the cells will be organized in the following matrix

	0/Years total	1/Months total	2/Base
0/Countries total	Total for all countries and all years	Total for all countries and a year	Total for all countries and a month
1/Cities total	Total for a country and all years	Total for a country and a year	Total for a country and a month
2/Base	Total for a city and all years	Total for a city and a year	Total for a city and a month

If the data cell for a total row/column is not specified, the cell will be inherited from lower levels, if possible. For example, if the "Total for all countries and a year" cell is not specified, the "Total for a country and a year" or "Total for a city and a year" cell will be used (in this order).

The data cell sizes are calculated from the base data cell sizes, i.e. the height of all data cells for a row will be the height of the base cell of that row. The base cell sizes are also inherited, e.g. if the height of a total row is not specified the height of the base row will be used.

Returns:

the data cell matrix

getParameters

JRCrosstabParameter[] getParameters()

Returns the crosstab parameters.

Crosstabs have separate expression evaluators and cannot access the parameters/fields/variables of the report. In order to use a value from the report inside a crosstab, it should be passed as parameter to the crosstab.

A crosstab parameters has a name and a value expression.

Returns:

the crosstab parameters

getParametersMapExpression

JRExpression getParametersMapExpression()

Returns the parameters map expression.

The set of values for crosstab parameters can be set using a map. If a parameter has also a value expression, it will overwrite the value from the map.

Returns:

the parameters map expression

getWhenNoDataCell

JRCellContents getWhenNoDataCell()

Returns a cell which will be rendered when no data was fed to the crosstab.

If this cell is not specified for a crosstab, nothing will be rendered for an empty crosstab.

The cell sizes are the same as the crosstab element sizes.

Returns:

a cell which will be rendered when no data was fed to the crosstab

getElementByKey

JRElement getElementByKey(String key)

Searches for an element inside all crosstab cells.

Parameters:

key - the element key

Returns:

the first element having the specified key

getHeaderCell

JRCellContents getHeaderCell()

Returns a cell which will be rendered at the upper-left corner of the crosstab.

The cell size will be calculated based on the row/column header cell widths/heights.

Returns:

a cell which will be rendered at the upper-left corner of the crosstab

getVariables

JRVariable[] getVariables()

Returns the variables defined for the crosstab.

Returns:

variables defined for the crosstab

See Also:

JRCrosstabGroup.getVariable(), JRCrosstabMeasure.getVariable(), VARIABLE_ROW_COUNT, VARIABLE_COLUMN_COUNT

getRunDirectionValue

RunDirectionEnum getRunDirectionValue()

Retrieves the run direction of this crosstab

Returns:

a value representing one of the run direction constants in RunDirectionEnum

setRunDirection

void setRunDirection(RunDirectionEnum runDirectionEnum)

Sets the run direction of the crosstab.

Crosstabs can either be filled from left to right (the default) or from right to left (mainly for reports in RTL languages).

Parameters:

runDirectionEnum - a value representing one of the run direction constants in RunDirectionEnum

getIgnoreWidth

Boolean getIgnoreWidth()

Returns the ignore width flag for the crosstab.

Returns:

the ignore width flag, or null is the crosstab does not specify a flag value

See Also:

setIgnoreWidth(Boolean)

setIgnoreWidth

void setIgnoreWidth(Boolean ignoreWidth)

Set the ignore width crosstab flag.

This flag determines whether the crosstab will break at the width set for the crosstab element, or whether the crosstab is to expand over this width (and over the page width as well).

If this flag is set to true, the crosstab will expand towards the right (or towards the left if the crosstab direction is RTL) as long as it needs to. This would result in crosstab cells being rendered over the page boundary; such elements will be exported by certain grid-based exporters such as the HTML or XLS ones, but will not be visible in export formats that observe the page width, such as the PDF exporter.

The default value of this flag is given by the PROPERTY_IGNORE_WIDTH property and the JRParameter.IS_IGNORE_PAGINATION parameter.

Parameters:

ignoreWidth - whether the element width is to be ignored by the crosstab, or null if the default setting is to be used

See Also:

PROPERTY_IGNORE_WIDTH

setIgnoreWidth

void setIgnoreWidth(boolean ignoreWidth)

Set the ignore width crosstab flag.

Parameters:

ignoreWidth -

See Also:

setIgnoreWidth(Boolean)