/*
* 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.impl;
/**
* The context in which an LPInterpreter instance is running.
* The context the entity that should be notified when a branch has been
* suspended awaiting further results for a given generator.
*/
public interface LPInterpreterContext extends LPInterpreterState {
/** Notify this context that a branch was suspended awaiting futher
* results for the given choice point. */
public void notifyBlockedOn(ConsumerChoicePointFrame ccp);
/** Test if one of our top level choice points is ready to be reactivated */
public boolean isReady();
/** Notify this context that the given choice point has terminated
* and can be remove from the wait list. */
public void notifyFinished(ConsumerChoicePointFrame ccp);
/** Called by a generating choice point to indicate we can be run
* because the indicated choice point is ready. */
public void setReady(ConsumerChoicePointFrame ccp);
}