1 files changed, 37 insertions, 0 deletions

diff --git a/subprojects/store-reasoning/src/main/java/tools/refinery/store/reasoning/translator/multiplicity/ConstrainedMultiplicity.java b/subprojects/store-reasoning/src/main/java/tools/refinery/store/reasoning/translator/multiplicity/ConstrainedMultiplicity.java
new file mode 100644
index 00000000..9db9cc96
--- /dev/null
+++ b/subprojects/store-reasoning/src/main/java/tools/refinery/store/reasoning/translator/multiplicity/ConstrainedMultiplicity.java
@@ -0,0 +1,37 @@
+/*
+ * SPDX-FileCopyrightText: 2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
+package tools.refinery.store.reasoning.translator.multiplicity;
+
+import tools.refinery.store.reasoning.representation.PartialRelation;
+import tools.refinery.store.reasoning.translator.TranslationException;
+import tools.refinery.store.representation.cardinality.CardinalityInterval;
+import tools.refinery.store.representation.cardinality.CardinalityIntervals;
+import tools.refinery.store.representation.cardinality.NonEmptyCardinalityInterval;
+
+public record ConstrainedMultiplicity(NonEmptyCardinalityInterval multiplicity, PartialRelation errorSymbol)
+                implements Multiplicity {
+        public ConstrainedMultiplicity {
+                if (multiplicity.equals(CardinalityIntervals.SET)) {
+                        throw new TranslationException(errorSymbol, "Expected a constrained cardinality interval");
+                }
+                if (errorSymbol.arity() != 1) {
+                        throw new TranslationException(errorSymbol, "Expected error symbol %s to have arity 1, got %d instead"
+                                        .formatted(errorSymbol, errorSymbol.arity()));
+                }
+        }
+
+        public static ConstrainedMultiplicity of(CardinalityInterval multiplicity, PartialRelation errorSymbol) {
+                if (!(multiplicity instanceof NonEmptyCardinalityInterval nonEmptyCardinalityInterval)) {
+                        throw new TranslationException(errorSymbol, "Inconsistent multiplicity");
+                }
+                return new ConstrainedMultiplicity(nonEmptyCardinalityInterval, errorSymbol);
+        }
+
+        @Override
+        public boolean isConstrained() {
+                return true;
+        }
+}