/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.jena.reasoner.rulesys;
import java.util.HashMap;
import java.util.Map;
/** * A registry for mapping functor names on java objects (instances
* of subclasses of Builtin) which implement their behvaiour.
* <p>
* This is currently implemented as a singleton to simply any future
* move to support different sets of builtins.
*
* @see Builtin
*/
public class MapBuiltinRegistry extends BuiltinRegistry {
/** Mapping from functor name to Builtin implementing it */
protected Map<String,Builtin> builtins = new HashMap<>();
/** Mapping from URI of builtin to implementation */
protected Map<String,Builtin> builtinsByURI = new HashMap<>();
/**
* Construct an empty registry
*/
public MapBuiltinRegistry() {
}
@Override
public void register(String functor, Builtin impl) {
builtins.put(functor, impl);
builtinsByURI.put(impl.getURI(), impl);
}
@Override
public void register(Builtin impl) {
builtins.put(impl.getName(), impl);
builtinsByURI.put(impl.getURI(), impl);
}
@Override
public Builtin getImplementation(String functor) {
return builtins.get(functor);
}
@Override
public Builtin getImplementationByURI(String uri) {
return builtinsByURI.get(uri);
}
}