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1   /*-
2    * #%L
3    * prolobjectlink-jpi
4    * %%
5    * Copyright (C) 2020 - 2021 Prolobjectlink Project
6    * %%
7    * Permission is hereby granted, free of charge, to any person obtaining a copy
8    * of this software and associated documentation files (the "Software"), to deal
9    * in the Software without restriction, including without limitation the rights
10   * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
11   * copies of the Software, and to permit persons to whom the Software is
12   * furnished to do so, subject to the following conditions:
13   * 
14   * The above copyright notice and this permission notice shall be included in
15   * all copies or substantial portions of the Software.
16   * 
17   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
20   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
23   * THE SOFTWARE.
24   * #L%
25   */
26  package io.github.prolobjectlink.prolog;
27  
28  import java.util.ArrayList;
29  import java.util.List;
30  import java.util.concurrent.ExecutionException;
31  import java.util.concurrent.FutureTask;
32  import java.util.concurrent.RunnableFuture;
33  import java.util.logging.Level;
34  import java.util.logging.Logger;
35  
36  class PrologRunnable extends FutureTask<List<List<Object>>> implements RunnableFuture<List<List<Object>>> {
37  
38  	private final PrologCallable callable;
39  
40  	PrologRunnable(PrologCallable callable) {
41  		super(callable);
42  		this.callable = callable;
43  	}
44  
45  	PrologRunnable(PrologProvider provider, PrologTerm... goals) {
46  		this(new PrologCallable(provider, goals));
47  	}
48  
49  	public PrologProvider getProvider() {
50  		return callable.getProvider();
51  	}
52  
53  	public List<List<Object>> get() throws InterruptedException, ExecutionException {
54  		List<List<Object>> list = new ArrayList<List<Object>>();
55  		try {
56  			list = callable.call();
57  		} catch (Exception e) {
58  			Logger.getLogger(Prolog.class.getName()).log(Level.FINEST, null, e);
59  		}
60  		return list;
61  	}
62  
63  }