com.suncode.pwfl.core.function

Interface Function

@Api
public interface Function

Function defined as set of overrides with common name and different parameters.

Author:

Rafał Nowacki 15 gru 2015, Cezary Kozar 29 kwi 2016

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static class	Function.FunctionAccessibility

Method Summary

Modifier and Type	Method and Description
void	addOverride(FunctionOverride override) Adds override to the list of overrides
<T> T	call(List<Type<?>> parameterTypes, Object... args) Invokes this function with given arguments.
<T> T	call(Object... args) Invokes this function with given arguments.
String	getName() Returns unique function name.
FunctionOverride	getOverride(Object... args) Returns this function override that matches given arguments.
FunctionOverride	getOverride(Type<?>... parameterTypes) Returns this function override that matches given parameter types.
List<FunctionOverride>	getOverrides() Returns list of available overrides (at least 1).

Method Detail

getName

String getName()

Returns unique function name. Used as identifier in FunctionRegistry.

Returns:

function name

getOverrides

List<FunctionOverride> getOverrides()

Returns list of available overrides (at least 1).

Returns:

function overrides

getOverride

FunctionOverride getOverride(Type<?>... parameterTypes)

Returns this function override that matches given parameter types.

Parameters:

parameterTypes - parameter types

Returns:

override matching parameter types or null if there is no matching override

getOverride

FunctionOverride getOverride(Object... args)

Returns this function override that matches given arguments.

Parameters:

args - invocation args

Returns:

override matching arguments or null if there is no matching override

addOverride

void addOverride(FunctionOverride override)

Adds override to the list of overrides

Parameters:

override - Override to add

call

<T> T call(Object... args)
    throws FunctionCallException

Invokes this function with given arguments. Algorithm chooses matching override and calls its FunctionOverride.call(Object...) function. Returns call result.

Parameters:

args - call arguments

Returns:

function call result

Throws:

FunctionCallException - in case of error

call

<T> T call(List<Type<?>> parameterTypes,
           Object... args)
    throws FunctionCallException

Invokes this function with given arguments. Provided parameter types will be used to choose matching override. Returns FunctionOverride.call(Object...) result.

Parameters:

parameterTypes - parameter types

args - call arguments

Returns:

function call result

Throws:

FunctionCallException - in case of error