Package io.keikaiex.formula

Class ELEval

java.lang.Object

io.keikaiex.formula.ELEval

All Implemented Interfaces:

FreeRefFunction

public class ELEval
extends Object
implements FreeRefFunction

A function that does ZK EL (Expression Language) evaluation — implements the Excel formula =ELEVAL("expr") so customer spreadsheets can embed EL into a cell.

POI removal Keikai-native rewrite — switched from POI's org.apache.poi.ss.formula.functions.FreeRefFunction to Keikai's FreeRefFunction. Behaviour is unchanged: when no ZK EL context is on the thread (headless mode) the function returns #NAME?; otherwise the EL expression is evaluated via reflection on org.zkoss.xel.Expressions.

Author:

henrichen

Field Summary

Fields

Modifier and Type	Field	Description
static final FreeRefFunction	instance
static final String	NAME

Method Summary

Modifier and Type	Method	Description
ValueEval	evaluate(ValueEval[] args, Object ec)	Evaluate the user function.

Methods inherited from class java.lang.Object

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

Field Details

instance

public static final FreeRefFunction instance

NAME

public static final String NAME

See Also:

• Constant Field Values

Method Details

evaluate

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

Description copied from interface: FreeRefFunction

Evaluate the user function.

Specified by:

evaluate in interface FreeRefFunction

Parameters:

args - the parsed argument values (numeric / string / boolean / error / blank Eval instances)

ec - opaque evaluation context (currently null under the Rust path; future Keikai-native contexts will pass cell position info)

Returns:

the function result; null or BlankEval.INSTANCE for an empty result.