Package org.eclipse.nebula.widgets.nattable.formula.function

Class AbstractMathFunction

java.lang.Object

org.eclipse.nebula.widgets.nattable.formula.function.AbstractFunction

org.eclipse.nebula.widgets.nattable.formula.function.AbstractMathFunction

All Implemented Interfaces:

FunctionValue, OperatorFunctionValue

Direct Known Subclasses:

AbstractMathSingleValueFunction, ModFunction, PowerFunction, ProductFunction, QuotientFunction, SumFunction

public abstract class AbstractMathFunction
extends AbstractFunction

Subclass of this class are intended to perform mathematical operations on the values set to it. It supports conversion of values to BigDecimal and ensures that only valid FunctionValues are accepted.

Since:

1.4

Field Summary

Fields inherited from class org.eclipse.nebula.widgets.nattable.formula.function.AbstractFunction

values

Constructor Summary

Constructors

Constructor	Description
AbstractMathFunction()
AbstractMathFunction(List<FunctionValue> values)

Method Summary

Modifier and Type	Method	Description
void	addFunctionValue(FunctionValue value)	Add the given FunctionValue for calculation.
protected BigDecimal	convertValue(Object value)	Converts a given value to a BigDecimal.
protected void	validateMethodParameter(List<FunctionValue> values)	Performs a type check for the given list of FunctionValues and throws a FunctionException in case a StringFunctionValue is contained.

Methods inherited from class org.eclipse.nebula.widgets.nattable.formula.function.AbstractFunction

isEmpty

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.eclipse.nebula.widgets.nattable.formula.function.FunctionValue

getValue

Constructor Details

AbstractMathFunction

public AbstractMathFunction()

AbstractMathFunction

public AbstractMathFunction(List<FunctionValue> values)

Method Details

addFunctionValue

public void addFunctionValue(FunctionValue value)

Description copied from interface: OperatorFunctionValue

Add the given FunctionValue for calculation.

Specified by:

addFunctionValue in interface OperatorFunctionValue

Overrides:

addFunctionValue in class AbstractFunction

Parameters:

value - The value to add.

convertValue

protected BigDecimal convertValue(Object value)

Converts a given value to a BigDecimal.

Parameters:

value - The object to convert.

Returns:

The BigDecimal representation of the given object.

Throws:

NumberFormatException - is the given value can not be converted to a BigDecimal

validateMethodParameter

protected void validateMethodParameter(List<FunctionValue> values)

Performs a type check for the given list of FunctionValues and throws a FunctionException in case a StringFunctionValue is contained.

Parameters:

values - The list of FunctionValue that should be checked.

Throws:

FunctionException - if a StringFunctionValue is detected.