001/* Copyright (C) 2013 TU Dortmund
002 * This file is part of LearnLib, http://www.learnlib.de/.
003 * 
004 * LearnLib is free software; you can redistribute it and/or
005 * modify it under the terms of the GNU Lesser General Public
006 * License version 3.0 as published by the Free Software Foundation.
007 * 
008 * LearnLib is distributed in the hope that it will be useful,
009 * but WITHOUT ANY WARRANTY; without even the implied warranty of
010 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
011 * Lesser General Public License for more details.
012 * 
013 * You should have received a copy of the GNU Lesser General Public
014 * License along with LearnLib; if not, see
015 * <http://www.gnu.de/documents/lgpl.en.html>.
016 */
017package de.learnlib.oracles;
018
019import java.util.Collection;
020import java.util.Collections;
021
022import net.automatalib.words.Word;
023import de.learnlib.api.MembershipOracle;
024import de.learnlib.api.Query;
025import de.learnlib.api.QueryAnswerer;
026
027public abstract class MQUtil {
028        
029        public static <I,O> O output(MembershipOracle<I,O> oracle, Word<I> queryWord) {
030                return query(oracle, queryWord).getOutput();
031        }
032        
033        public static <I,O> O output(MembershipOracle<I,O> oracle, Word<I> prefix, Word<I> suffix) {
034                return query(oracle, prefix, suffix).getOutput();
035        }
036        
037        public static <I,O> DefaultQuery<I,O> query(MembershipOracle<I,O> oracle, Word<I> prefix, Word<I> suffix) {
038                DefaultQuery<I,O> qry = new DefaultQuery<>(prefix, suffix);
039                oracle.processQueries(Collections.singleton(qry));
040                return qry;
041        }
042        
043        public static <I,O> DefaultQuery<I,O> query(MembershipOracle<I,O> oracle, Word<I> queryWord) {
044                return query(oracle, Word.<I>epsilon(), queryWord);
045        }
046        
047        public static <I,O> void answerQueries(QueryAnswerer<I,O> answerer, Collection<? extends Query<I,O>> queries) {
048                for(Query<I,O> query : queries) {
049                        Word<I> prefix = query.getPrefix();
050                        Word<I> suffix = query.getSuffix();
051                        O answer = answerer.answerQuery(prefix, suffix);
052                        query.answer(answer);
053                }
054        }
055}