Package org.kie.dmn.feel.runtime

Interface FEELFunction

All Known Implementing Classes:

AbsFunction, AbstractCustomFEELFunction, AfterFunction, AllFunction, AnyFunction, AppendFunction, BaseFEELFunction, BeforeFunction, CeilingFunction, CeilingFunction, CodeFunction, CoincidesFunction, CompiledCustomFEELFunction, ConcatenateFunction, ContainsFunction, ContextFunction, ContextMergeFunction, ContextPutFunction, CountFunction, CustomFEELFunction, DateAndTimeFunction, DateFunction, DateFunction, DayOfWeekFunction, DayOfYearFunction, DecimalFunction, DecisionTableFunction, DistinctValuesFunction, DTInvokerFunction, DurationFunction, DurationFunction, DuringFunction, EndsWithFunction, EvenFunction, ExpFunction, FinishedByFunction, FinishesFunction, FlattenFunction, FloorFunction, FloorFunction, GetEntriesFunction, GetValueFunction, IncludesFunction, IndexOfFunction, InsertBeforeFunction, InvokeFunction, IsFunction, JavaFunction, ListContainsFunction, LogFunction, MatchesFunction, MaxFunction, MeanFunction, MedianFunction, MeetsFunction, MetByFunction, MinFunction, ModeFunction, ModuloFunction, MonthOfYearFunction, NNAllFunction, NNAnyFunction, NNCountFunction, NNMaxFunction, NNMeanFunction, NNMedianFunction, NNMinFunction, NNModeFunction, NNStddevFunction, NNSumFunction, NotFunction, NowFunction, NumberFunction, OddFunction, OverlapsAfterFunction, OverlapsBeforeFunction, OverlapsFunction, ProductFunction, RangeFunction, RemoveFunction, ReplaceFunction, ReverseFunction, RoundDownFunction, RoundHalfDownFunction, RoundHalfUpFunction, RoundUpFunction, SortFunction, SplitFunction, SqrtFunction, StartedByFunction, StartsFunction, StartsWithFunction, StddevFunction, StringFunction, StringJoinFunction, StringLengthFunction, StringLowerCaseFunction, StringUpperCaseFunction, SublistFunction, SubstringAfterFunction, SubstringBeforeFunction, SubstringFunction, SumFunction, TimeFunction, TimeFunction, TodayFunction, UnionFunction, WeekOfYearFunction, YearsAndMonthsFunction

public interface FEELFunction

An interface for all FEEL functions, custom or built-in

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static class	FEELFunction.Param

Method Summary

Modifier and Type	Method	Description
String	getName()	Returns the name of the function
List<List<FEELFunction.Param>>	getParameters()	Returns the parameter for each supported signature.
Symbol	getSymbol()	Returns the Symbol of the function
Object	invokeReflectively(EvaluationContext ctx, Object[] params)	Invokes the function reflectively based on the parameters

Method Detail

getName

String getName()

Returns the name of the function

Returns:

getSymbol

Symbol getSymbol()

Returns the Symbol of the function

Returns:

getParameters

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

Returns the parameter for each supported signature.

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" } }

invokeReflectively

Object invokeReflectively(EvaluationContext ctx,
                          Object[] params)

Invokes the function reflectively based on the parameters

Parameters:

ctx -

params -

Returns: