com.ibm.tivoli.maximo.expression

Class LazyFunction

java.lang.Object

com.ibm.tivoli.maximo.expression.LazyFunction

Direct Known Subclasses:

Function

public abstract class LazyFunction
extends java.lang.Object

Abstract definition of a supported expression function. A function is defined by a name, the number of parameters and the actual processing implementation.

Constructor Summary

Constructors

Constructor and Description
LazyFunction(Expression exp, java.lang.String name, int numParams) Creates a new function with given name and parameter count.

Method Summary

Modifier and Type	Method and Description
Expression	getExpression()
java.lang.String	getName()
int	getNumParams()
abstract LazyNumber	lazyEval(java.util.List<LazyNumber> lazyParams) Implementation for this function.
boolean	numParamsVaries()

Methods inherited from class java.lang.Object

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

Constructor Detail

LazyFunction

public LazyFunction(Expression exp,
                    java.lang.String name,
                    int numParams)

Creates a new function with given name and parameter count.

Parameters:

name - The name of the function.

numParams - The number of parameters for this function.

Method Detail

getExpression

public Expression getExpression()

getName

public java.lang.String getName()

getNumParams

public int getNumParams()

numParamsVaries

public boolean numParamsVaries()

lazyEval

public abstract LazyNumber lazyEval(java.util.List<LazyNumber> lazyParams)

Implementation for this function.

Parameters:

parameters - Parameters will be passed by the expression evaluator as a List of BigDecimal values.

Returns:

The function must return a new BigDecimal value as a computing result.