/*
* 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;
/**
* A set of constants used to record state information in the
* backchaining rule interepreter.
*/
public class StateFlag {
/** Label for printing */
private String label;
/** Indicates a goal has failed and return no more answers at this time */
public static final StateFlag FAIL = new StateFlag("FAIL");
/** Indicates that all currently available results have been returned and
* the goal should be suspended into new subgoal results have been generated */
public static final StateFlag SUSPEND = new StateFlag("SUSPEND");
/** Indicates that the goal remains active */
public static final StateFlag ACTIVE = new StateFlag("ACTIVE");
/** Indicates a fully satisfied goal */
public static final StateFlag SATISFIED = new StateFlag("SATISFIED");
/** Constructor */
private StateFlag(String label) {
this.label = label;
}
/** Print string */
@Override
public String toString() {
return label;
}
}