Module gov.nist.secauto.metaschema.core

Package gov.nist.secauto.metaschema.core.metapath.function

Class FunctionService

java.lang.Object

gov.nist.secauto.metaschema.core.metapath.function.FunctionService

public final class FunctionService
extends Object

Constructor Summary

Constructors

Constructor	Description
FunctionService()	Construct a new function service.

Method Summary

Modifier and Type	Method	Description
IFunction	getFunction(String name, IExpression... arguments)	Retrieve the function with the provided name that supports the signature of the provided methods, if such a function exists.
IFunction	getFunction(String name, List<IExpression> arguments)	Retrieve the function with the provided name that supports the signature of the provided methods, if such a function exists.
static FunctionService	getInstance()	Get the singleton instance of the function service.
IFunctionLibrary	load()	Load all known functions registered with this function service.

Methods inherited from class java.lang.Object

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

Constructor Detail

FunctionService

public FunctionService()

Construct a new function service.

Method Detail

getInstance

public static FunctionService getInstance()

Get the singleton instance of the function service.

Returns:

the service instance

load

@NonNull
public IFunctionLibrary load()

Load all known functions registered with this function service.

Returns:

the function library

getFunction

public IFunction getFunction(@NonNull
                             String name,
                             @NonNull
                             IExpression... arguments)

Retrieve the function with the provided name that supports the signature of the provided methods, if such a function exists.

Parameters:

name - the name of a group of functions

arguments - a list of argument expressions for use in determining an argument signature match

Returns:

the matching function or null if no match exists

Throws:

StaticMetapathException - if a matching function was not found

getFunction

public IFunction getFunction(@NonNull
                             String name,
                             @NonNull
                             List<IExpression> arguments)

Retrieve the function with the provided name that supports the signature of the provided methods, if such a function exists.

Parameters:

name - the name of a group of functions

arguments - a list of argument expressions for use in determining an argument signature match

Returns:

the matching function

Throws:

StaticMetapathException - if a matching function was not found