diff options
Diffstat (limited to 'subprojects/viatra-runtime/src/main/java/tools/refinery/viatra/runtime/matchers/psystem/ITypeConstraint.java')
-rw-r--r-- | subprojects/viatra-runtime/src/main/java/tools/refinery/viatra/runtime/matchers/psystem/ITypeConstraint.java | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/subprojects/viatra-runtime/src/main/java/tools/refinery/viatra/runtime/matchers/psystem/ITypeConstraint.java b/subprojects/viatra-runtime/src/main/java/tools/refinery/viatra/runtime/matchers/psystem/ITypeConstraint.java new file mode 100644 index 00000000..b72035a8 --- /dev/null +++ b/subprojects/viatra-runtime/src/main/java/tools/refinery/viatra/runtime/matchers/psystem/ITypeConstraint.java | |||
@@ -0,0 +1,65 @@ | |||
1 | /******************************************************************************* | ||
2 | * Copyright (c) 2010-2015, Bergmann Gabor, Istvan Rath and Daniel Varro | ||
3 | * This program and the accompanying materials are made available under the | ||
4 | * terms of the Eclipse Public License v. 2.0 which is available at | ||
5 | * http://www.eclipse.org/legal/epl-v20.html. | ||
6 | * | ||
7 | * SPDX-License-Identifier: EPL-2.0 | ||
8 | *******************************************************************************/ | ||
9 | package tools.refinery.viatra.runtime.matchers.psystem; | ||
10 | |||
11 | import java.util.HashMap; | ||
12 | import java.util.HashSet; | ||
13 | import java.util.Map; | ||
14 | import java.util.Map.Entry; | ||
15 | |||
16 | import tools.refinery.viatra.runtime.matchers.context.IInputKey; | ||
17 | import tools.refinery.viatra.runtime.matchers.context.IQueryMetaContext; | ||
18 | import tools.refinery.viatra.runtime.matchers.tuple.Tuple; | ||
19 | |||
20 | import java.util.Set; | ||
21 | |||
22 | /** | ||
23 | * Common superinterface of enumerable and deferred type constraints. | ||
24 | * @author Bergmann Gabor | ||
25 | * | ||
26 | */ | ||
27 | public interface ITypeConstraint extends ITypeInfoProviderConstraint { | ||
28 | |||
29 | public abstract TypeJudgement getEquivalentJudgement(); | ||
30 | |||
31 | /** | ||
32 | * Static internal utility class for implementations of {@link ITypeConstraint}s. | ||
33 | * @author Bergmann Gabor | ||
34 | */ | ||
35 | public static class TypeConstraintUtil { | ||
36 | |||
37 | private TypeConstraintUtil() { | ||
38 | // Hiding constructor for utility class | ||
39 | } | ||
40 | |||
41 | public static Map<Set<PVariable>, Set<PVariable>> getFunctionalDependencies(IQueryMetaContext context, IInputKey inputKey, Tuple variablesTuple) { | ||
42 | final Map<Set<PVariable>, Set<PVariable>> result = new HashMap<Set<PVariable>, Set<PVariable>>(); | ||
43 | |||
44 | Set<Entry<Set<Integer>, Set<Integer>>> dependencies = context.getFunctionalDependencies(inputKey).entrySet(); | ||
45 | for (Entry<Set<Integer>, Set<Integer>> dependency : dependencies) { | ||
46 | result.put( | ||
47 | transcribeVariables(dependency.getKey(), variablesTuple), | ||
48 | transcribeVariables(dependency.getValue(), variablesTuple) | ||
49 | ); | ||
50 | } | ||
51 | |||
52 | return result; | ||
53 | } | ||
54 | |||
55 | private static Set<PVariable> transcribeVariables(Set<Integer> indices, Tuple variablesTuple) { | ||
56 | Set<PVariable> result = new HashSet<PVariable>(); | ||
57 | for (Integer index : indices) { | ||
58 | result.add((PVariable) variablesTuple.get(index)); | ||
59 | } | ||
60 | return result; | ||
61 | } | ||
62 | |||
63 | } | ||
64 | |||
65 | } | ||