org.pentaho.reporting.libraries.formula.operators

Class AbstractNumericOperator

java.lang.Object

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

All Implemented Interfaces:

java.io.Serializable, InfixOperator

Direct Known Subclasses:

AddOperator, DivideOperator, MultiplyOperator, PowerOperator, SubtractOperator

public abstract class AbstractNumericOperator
extends java.lang.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 and Description
protected static java.lang.Number	ZERO

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	AbstractNumericOperator()

Method Summary

Methods

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

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 java.lang.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 java.lang.Number evaluate(java.lang.Number number1,
                        java.lang.Number number2)
                                      throws EvaluationException

Throws:

EvaluationException