Package org.pentaho.reporting.libraries.formula.operators

Class AbstractNumericOperator

java.lang.Object

org.pentaho.reporting.libraries.formula.operators.AbstractNumericOperator

All Implemented Interfaces:

Serializable, InfixOperator

Direct Known Subclasses:

AddOperator, DivideOperator, MultiplyOperator, PowerOperator, SubtractOperator

public abstract class AbstractNumericOperator
extends Object
implements InfixOperator

Creation-Date: 10.04.2007, 15:02:39

Author:

Thomas Morgner

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
protected static Number	ZERO

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	AbstractNumericOperator()

Method Summary

Modifier and Type	Method	Description
protected abstract Number	evaluate(Number number1, Number number2)
TypeValuePair	evaluate(FormulaContext context, TypeValuePair value1, TypeValuePair value2)	Evaluates the comptuation for both parameters.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.pentaho.reporting.libraries.formula.operators.InfixOperator

getLevel, isAssociative, isLeftOperation

Field Detail

ZERO

protected static final Number ZERO

Constructor Detail

AbstractNumericOperator

protected AbstractNumericOperator()

Method Detail

evaluate

public final TypeValuePair evaluate(FormulaContext context,
                                    TypeValuePair value1,
                                    TypeValuePair value2)
                             throws EvaluationException

Description copied from interface: InfixOperator

Evaluates the comptuation for both parameters. This method must never return null.

Specified by:

evaluate in interface InfixOperator

Returns:

Throws:

EvaluationException

evaluate

protected abstract Number evaluate(Number number1,
                                   Number number2)
                            throws EvaluationException

Throws:

EvaluationException