diff options
Diffstat (limited to 'subprojects/viatra-runtime/src/main/java/tools/refinery/viatra/runtime/matchers/psystem/basicdeferred/ExpressionEvaluation.java')
-rw-r--r-- | subprojects/viatra-runtime/src/main/java/tools/refinery/viatra/runtime/matchers/psystem/basicdeferred/ExpressionEvaluation.java | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/subprojects/viatra-runtime/src/main/java/tools/refinery/viatra/runtime/matchers/psystem/basicdeferred/ExpressionEvaluation.java b/subprojects/viatra-runtime/src/main/java/tools/refinery/viatra/runtime/matchers/psystem/basicdeferred/ExpressionEvaluation.java new file mode 100644 index 00000000..06688c36 --- /dev/null +++ b/subprojects/viatra-runtime/src/main/java/tools/refinery/viatra/runtime/matchers/psystem/basicdeferred/ExpressionEvaluation.java | |||
@@ -0,0 +1,80 @@ | |||
1 | /******************************************************************************* | ||
2 | * Copyright (c) 2010-2013, Zoltan Ujhelyi, 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.basicdeferred; | ||
10 | |||
11 | import java.util.ArrayList; | ||
12 | import java.util.Collections; | ||
13 | import java.util.LinkedHashSet; | ||
14 | import java.util.Map; | ||
15 | import java.util.Set; | ||
16 | |||
17 | import tools.refinery.viatra.runtime.matchers.context.IQueryMetaContext; | ||
18 | import tools.refinery.viatra.runtime.matchers.psystem.IExpressionEvaluator; | ||
19 | import tools.refinery.viatra.runtime.matchers.psystem.PBody; | ||
20 | import tools.refinery.viatra.runtime.matchers.psystem.PVariable; | ||
21 | import tools.refinery.viatra.runtime.matchers.tuple.Tuples; | ||
22 | |||
23 | /** | ||
24 | * @author Zoltan Ujhelyi | ||
25 | * | ||
26 | */ | ||
27 | public class ExpressionEvaluation extends BaseTypeSafeConstraint { | ||
28 | |||
29 | private IExpressionEvaluator evaluator; | ||
30 | private boolean isUnwinding; | ||
31 | |||
32 | public ExpressionEvaluation(PBody pBody, IExpressionEvaluator evaluator, PVariable outputVariable) { | ||
33 | this(pBody, evaluator, outputVariable, false); | ||
34 | } | ||
35 | |||
36 | /** | ||
37 | * @since 2.4 | ||
38 | */ | ||
39 | public ExpressionEvaluation(PBody pBody, IExpressionEvaluator evaluator, PVariable outputVariable, | ||
40 | boolean isUnwinding) { | ||
41 | super(pBody, getPVariablesOfExpression(pBody, evaluator), outputVariable); | ||
42 | this.evaluator = evaluator; | ||
43 | this.isUnwinding = isUnwinding; | ||
44 | } | ||
45 | |||
46 | /** | ||
47 | * @since 2.4 | ||
48 | */ | ||
49 | public boolean isUnwinding() { | ||
50 | return isUnwinding; | ||
51 | } | ||
52 | |||
53 | public IExpressionEvaluator getEvaluator() { | ||
54 | return evaluator; | ||
55 | } | ||
56 | |||
57 | @Override | ||
58 | protected String toStringRest() { | ||
59 | return Tuples.flatTupleOf(new ArrayList<PVariable>(inputVariables).toArray()).toString() + "|=" | ||
60 | + evaluator.getShortDescription(); | ||
61 | } | ||
62 | |||
63 | @Override | ||
64 | public Map<Set<PVariable>, Set<PVariable>> getFunctionalDependencies(IQueryMetaContext context) { | ||
65 | if (outputVariable == null) | ||
66 | return Collections.emptyMap(); | ||
67 | else | ||
68 | return Collections.singletonMap(inputVariables, Collections.singleton(outputVariable)); | ||
69 | } | ||
70 | |||
71 | private static Set<PVariable> getPVariablesOfExpression(PBody pBody, IExpressionEvaluator evaluator) { | ||
72 | // use a linked set, so that the variables will come in the order of the parameters | ||
73 | Set<PVariable> result = new LinkedHashSet<PVariable>(); | ||
74 | for (String name : evaluator.getInputParameterNames()) { | ||
75 | PVariable variable = pBody.getOrCreateVariableByName(name); | ||
76 | result.add(variable); | ||
77 | } | ||
78 | return result; | ||
79 | } | ||
80 | } | ||