net.sf.jasperreports.engine.fill
Interface JRCalculable

All Known Implementing Classes:

JRFillVariable, MeasureDefinition.MeasureValue

public interface JRCalculable

Interface for objects that can be used by extended incrementers for calculations.

Version:

$Id: JRCalculable.java 1229 2006-04-19 10:27:35Z teodord $

Author:

Lucian Chirita (lucianc@users.sourceforge.net)

See Also:

JRExtendedIncrementer

Field Summary

static byte	HELPER_COUNT Constant for the count helper variable.
static int	HELPER_SIZE The number of defined helper variables.
static byte	HELPER_SUM Constant for the sum helper variable.
static byte	HELPER_VARIANCE Constant for the variance helper variable.

Method Summary

JRCalculable	getHelperVariable(byte helperType) Returns a helper variable.
java.lang.Object	getIncrementedValue() Returns the incremented value of the calculable object.
java.lang.Object	getValue() Returns the value of the calculable object.
boolean	isInitialized() Returns true iff the calculable object was only initialized and not incremented.
void	setInitialized(boolean isInitialized) Sets the initialized flag for this calculable object.

Field Detail

HELPER_COUNT

static final byte HELPER_COUNT

Constant for the count helper variable.

See Also:

Constant Field Values

HELPER_SUM

static final byte HELPER_SUM

Constant for the sum helper variable.

See Also:

Constant Field Values

HELPER_VARIANCE

static final byte HELPER_VARIANCE

Constant for the variance helper variable.

See Also:

Constant Field Values

HELPER_SIZE

static final int HELPER_SIZE

The number of defined helper variables.

See Also:

Constant Field Values

Method Detail

isInitialized

boolean isInitialized()

Returns true iff the calculable object was only initialized and not incremented.

Returns:

true iff the calculable object was only initialized and not incremented

setInitialized

void setInitialized(boolean isInitialized)

Sets the initialized flag for this calculable object.

Parameters:

isInitialized - the initialized flag

See Also:

isInitialized()

getIncrementedValue

java.lang.Object getIncrementedValue()

Returns the incremented value of the calculable object.

Returns:

the incremented value

getValue

java.lang.Object getValue()

Returns the value of the calculable object.

Returns:

the value

getHelperVariable

JRCalculable getHelperVariable(byte helperType)

Returns a helper variable.

Parameters:

helperType - the desired helper variable type

Returns:

the helper variable