blob: 56f8ca76f27e30d1e4844bc661a155450f4a3d31 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
|
/*******************************************************************************
* Copyright (c) 2010-2014, Zoltan Ujhelyi, Istvan Rath and Daniel Varro
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v. 2.0 which is available at
* http://www.eclipse.org/legal/epl-v20.html.
*
* SPDX-License-Identifier: EPL-2.0
*******************************************************************************/
package tools.refinery.viatra.runtime.matchers.psystem.queries;
import java.util.HashSet;
import java.util.Set;
import java.util.function.Function;
import java.util.function.Predicate;
import java.util.stream.Stream;
import tools.refinery.viatra.runtime.matchers.context.IInputKey;
import tools.refinery.viatra.runtime.matchers.psystem.IMultiQueryReference;
import tools.refinery.viatra.runtime.matchers.psystem.ITypeConstraint;
import tools.refinery.viatra.runtime.matchers.psystem.PBody;
import tools.refinery.viatra.runtime.matchers.psystem.PTraceable;
import tools.refinery.viatra.runtime.matchers.psystem.basicenumerables.TypeConstraint;
import tools.refinery.viatra.runtime.matchers.psystem.queries.PQuery.PQueryStatus;
/**
* Utility class for using PQueries in functional/streaming collection operations effectively
*
* @author Zoltan Ujhelyi
*
*/
public final class PQueries {
/**
* Hidden constructor for utility class
*/
private PQueries() {
}
/**
* Predicate checking for the status of selected queries
*
*/
public static Predicate<PQuery> queryStatusPredicate(final PQueryStatus status) {
return query -> query.getStatus().equals(status);
}
/**
* Enumerates referred queries (without duplicates) for the given body
*/
public static Function<PBody, Stream<PQuery>> directlyReferencedQueriesFunction() {
return body -> (body.getConstraintsOfType(IMultiQueryReference.class).stream()
.flatMap(e -> e.getReferredQueries().stream()).distinct());
}
/**
* Enumerates directly referred extensional relations (without duplicates) in the canonical form of the given query
*
* @param enumerablesOnly
* only enumerable type constraints are considered
* @since 2.0
*/
public static Stream<IInputKey> directlyRequiredTypesOfQuery(PQuery query, boolean enumerablesOnly) {
return directlyRequiredTypesOfDisjunction(query.getDisjunctBodies(), enumerablesOnly);
}
/**
* Enumerates directly referred extensional relations (without duplicates) for the given formulation of a query.
*
* @param enumerablesOnly
* only enumerable type constraints are considered
* @since 2.0
*/
public static Stream<IInputKey> directlyRequiredTypesOfDisjunction(PDisjunction disjunctBodies,
boolean enumerablesOnly) {
Class<? extends ITypeConstraint> filterClass = enumerablesOnly ? TypeConstraint.class : ITypeConstraint.class;
return disjunctBodies.getBodies().stream().flatMap(body -> body.getConstraintsOfType(filterClass).stream())
.map(constraint -> constraint.getEquivalentJudgement().getInputKey()).distinct();
}
/**
* @since 1.4
*/
public static Predicate<PParameter> parameterDirectionPredicate(final PParameterDirection direction) {
return input -> input.getDirection() == direction;
}
/**
* Returns all {@link PTraceable}s contained in the given {@link PQuery}: itself, its bodies and their constraints.
*
* @since 1.6
*/
public static Set<PTraceable> getTraceables(PQuery query) {
final Set<PTraceable> traceables = new HashSet<>();
traceables.add(query);
query.getDisjunctBodies().getBodies().forEach(body -> {
traceables.add(body);
body.getConstraints().forEach(traceables::add);
});
return traceables;
}
/**
* Calculates the simple name related from a given qualified name by finding the part after the last '.' character.
*
* @since 2.0
*/
public static String calculateSimpleName(String qualifiedName) {
return qualifiedName.substring(qualifiedName.lastIndexOf('.') + 1);
}
}
|
