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Diffstat (limited to 'subprojects/viatra-runtime/src/main/java/tools/refinery/viatra/runtime/matchers/psystem/basicenumerables/BinaryReflexiveTransitiveClosure.java')
-rw-r--r-- | subprojects/viatra-runtime/src/main/java/tools/refinery/viatra/runtime/matchers/psystem/basicenumerables/BinaryReflexiveTransitiveClosure.java | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/subprojects/viatra-runtime/src/main/java/tools/refinery/viatra/runtime/matchers/psystem/basicenumerables/BinaryReflexiveTransitiveClosure.java b/subprojects/viatra-runtime/src/main/java/tools/refinery/viatra/runtime/matchers/psystem/basicenumerables/BinaryReflexiveTransitiveClosure.java new file mode 100644 index 00000000..e3dae240 --- /dev/null +++ b/subprojects/viatra-runtime/src/main/java/tools/refinery/viatra/runtime/matchers/psystem/basicenumerables/BinaryReflexiveTransitiveClosure.java | |||
@@ -0,0 +1,57 @@ | |||
1 | /******************************************************************************* | ||
2 | * Copyright (c) 2004-2010 Zoltan Ujhelyi, Gabor Bergmann, IncQuery Labs Ltd. | ||
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 | |||
10 | package tools.refinery.viatra.runtime.matchers.psystem.basicenumerables; | ||
11 | |||
12 | import tools.refinery.viatra.runtime.matchers.context.IInputKey; | ||
13 | import tools.refinery.viatra.runtime.matchers.planning.QueryProcessingException; | ||
14 | import tools.refinery.viatra.runtime.matchers.psystem.PBody; | ||
15 | import tools.refinery.viatra.runtime.matchers.psystem.queries.PQuery; | ||
16 | import tools.refinery.viatra.runtime.matchers.tuple.Tuple; | ||
17 | |||
18 | /** | ||
19 | * For a binary base pattern over an enumerable universe type, computes the reflexive transitive closure (base)* | ||
20 | * | ||
21 | * @author Gabor Bergmann, Zoltan Ujhelyi | ||
22 | * @since 2.0 | ||
23 | */ | ||
24 | public class BinaryReflexiveTransitiveClosure extends AbstractTransitiveClosure { | ||
25 | |||
26 | private final IInputKey universeType; | ||
27 | |||
28 | public BinaryReflexiveTransitiveClosure(PBody pBody, Tuple variablesTuple, | ||
29 | PQuery pattern, IInputKey universeType) { | ||
30 | super(pBody, variablesTuple, pattern); | ||
31 | this.universeType = universeType; | ||
32 | } | ||
33 | |||
34 | @Override | ||
35 | protected String keyToString() { | ||
36 | return supplierKey.getFullyQualifiedName() + "*"; | ||
37 | } | ||
38 | |||
39 | /** | ||
40 | * Returns the type whose instances should be returned as 0-long paths. | ||
41 | * @since 2.0 | ||
42 | */ | ||
43 | public IInputKey getUniverseType() { | ||
44 | return universeType; | ||
45 | } | ||
46 | |||
47 | @Override | ||
48 | public void checkSanity() { | ||
49 | if (!universeType.isEnumerable() || universeType.getArity() != 1) { | ||
50 | throw new QueryProcessingException( | ||
51 | String.format("Invalid universe type %s - it should be enumerable and must have an arity of 1.", | ||
52 | universeType.getPrettyPrintableName()), | ||
53 | pBody.getPattern()); | ||
54 | } | ||
55 | } | ||
56 | |||
57 | } | ||