/*
* Copyright 2012 Research Studios Austria Forschungsges.m.b.H.
*
* Licensed 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 won.bot.framework.component.needproducer;
import org.apache.jena.rdf.model.Model;
/**
* Interface for producing needs. The needs produced must be suitable as the 'model'
* argument to the createNeed protocol method (i.e., don't have a URI, and only contain user-definable data).
*
* Note: Implementations must be thread-safe.
*/
public interface NeedProducer
{
/**
* Returns a new Model that represents the created need or null if no more needs can be created.
* @return a model or null
*/
public Model create();
/**
* Indicates that no more needs will be created by this factory.
* @return
*/
public boolean isExhausted();
}