com.hp.hpl.jena.reasoner.rulesys

Class BuiltinRegistry

java.lang.Object

com.hp.hpl.jena.reasoner.rulesys.BuiltinRegistry

public class BuiltinRegistry
extends Object

A registry for mapping functor names on java objects (instances of subclasses of Builtin) which implement their behvaiour.

This is currently implemented as a singleton to simply any future move to support different sets of builtins.

See Also:

Builtin

Field Summary

Fields

Modifier and Type	Field and Description
static BuiltinRegistry	theRegistry The single global static registry

Constructor Summary

Constructors

Constructor and Description
BuiltinRegistry() Construct an empty registry

Method Summary

Methods

Modifier and Type	Method and Description
Builtin	getImplementation(String functor) Find the implementation of the given builtin functor.
Builtin	getImplementationByURI(String uri) Find the implementation of the given builtin functor.
void	register(Builtin impl) Register an implementation for a given builtin using its default name.
void	register(String functor, Builtin impl) Register an implementation for a given builtin functor.

Methods inherited from class java.lang.Object

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

Field Detail

theRegistry

public static BuiltinRegistry theRegistry

The single global static registry

Constructor Detail

BuiltinRegistry

public BuiltinRegistry()

Construct an empty registry

Method Detail

register

public void register(String functor,
            Builtin impl)

Register an implementation for a given builtin functor.

Parameters:

functor - the name of the functor used to invoke the builtin

impl - the implementation of the builtin

register

public void register(Builtin impl)

Register an implementation for a given builtin using its default name.

Parameters:

impl - the implementation of the builtin

getImplementation

public Builtin getImplementation(String functor)

Find the implementation of the given builtin functor.

Parameters:

functor - the name of the functor being invoked.

Returns:

a Builtin or null if there is none registered under that name

getImplementationByURI

public Builtin getImplementationByURI(String uri)

Find the implementation of the given builtin functor.

Parameters:

uri - the URI of the builtin to be retrieved

Returns:

a Builtin or null if there is none registered under that name