Package org.kie.dmn.feel.runtime.functions

Class JavaFunction

java.lang.Object

org.kie.dmn.feel.runtime.functions.BaseFEELFunction

org.kie.dmn.feel.runtime.functions.JavaFunction

All Implemented Interfaces:

FEELFunction

@GwtIncompatible
public class JavaFunction
extends BaseFEELFunction

Nested Class Summary

Nested classes/interfaces inherited from interface org.kie.dmn.feel.runtime.FEELFunction

FEELFunction.Param

Constructor Summary

Constructors

Constructor	Description
JavaFunction(String name, List<FEELFunction.Param> params, Class clazz, Method method)

Method Summary

Modifier and Type	Method	Description
List<List<FEELFunction.Param>>	getParameters()	Returns the parameter for each supported signature.
FEELFnResult<Object>	invoke(EvaluationContext ctx, Object[] params)	this method should be overriden by custom function implementations that should be invoked reflectively
protected boolean	isCustomFunction()
String	toString()

Methods inherited from class org.kie.dmn.feel.runtime.functions.BaseFEELFunction

getName, getSymbol, invokeReflectively, setName

Methods inherited from class java.lang.Object

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

Constructor Detail

JavaFunction

public JavaFunction(String name,
                    List<FEELFunction.Param> params,
                    Class clazz,
                    Method method)

Method Detail

getParameters

public List<List<FEELFunction.Param>> getParameters()

Description copied from interface: FEELFunction

Returns the parameter for each supported signature.

Specified by:

getParameters in interface FEELFunction

Overrides:

getParameters in class BaseFEELFunction

Returns:

a List of Lists of Strings with the parameters. For a function with multiple signatures, each element of the list returns the parameters of one signature. E.g.: the substring function has 2 supported signatures: substring( string, start position ) substring( string, start position, length ) So this method will return: { { "string", "start position" }, { "string", "start position", "length" } }

invoke

public FEELFnResult<Object> invoke(EvaluationContext ctx,
                                   Object[] params)

Description copied from class: BaseFEELFunction

this method should be overriden by custom function implementations that should be invoked reflectively

Overrides:

invoke in class BaseFEELFunction

Returns:

isCustomFunction

protected boolean isCustomFunction()

Overrides:

isCustomFunction in class BaseFEELFunction

toString

public String toString()

Overrides:

toString in class Object