org.zkoss.zssex.formula

Class ELEval

java.lang.Object

org.zkoss.zssex.formula.ELEval

All Implemented Interfaces:

FreeRefFunction

public class ELEval
extends java.lang.Object
implements FreeRefFunction

A function that do EL evaluation.

Author:

henrichen

Field Summary

Fields

Modifier and Type	Field and Description
static FreeRefFunction	instance
static java.lang.String	NAME

Method Summary

Modifier and Type	Method and Description
ValueEval	evaluate(ValueEval[] args, OperationEvaluationContext ec)

Methods inherited from class java.lang.Object

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

Field Detail

instance

public static final FreeRefFunction instance

NAME

public static final java.lang.String NAME

See Also:

Constant Field Values

Method Detail

evaluate

public ValueEval evaluate(ValueEval[] args,
                          OperationEvaluationContext ec)

Specified by:

evaluate in interface FreeRefFunction

Parameters:

args - the pre-evaluated arguments for this function. args is never null, nor are any of its elements.

ec - primarily used to identify the source cell containing the formula being evaluated. may also be used to dynamically create reference evals.

Returns:

never null. Possibly an instance of ErrorEval in the case of a specified Excel error (Exceptions are never thrown to represent Excel errors).