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.List;
29 import java.util.concurrent.Callable;
30
31 class PrologCallable implements Callable<List<List<Object>>> {
32
33 private final PrologTerm[] goals;
34 private final PrologEngine engine;
35 private final PrologProvider provider;
36
37 PrologCallable(PrologProvider provider, PrologTerm... goals) {
38 this.engine = provider.newEngine();
39 this.provider = provider;
40 this.goals = goals;
41 }
42
43 public List<List<Object>> call() throws Exception {
44 return engine.query(goals).allResults();
45 }
46
47 public PrologProvider getProvider() {
48 return provider;
49 }
50
51 }