1 files changed, 34 insertions, 6 deletions

diff --git a/subprojects/store-reasoning-scope/src/main/java/tools/refinery/store/reasoning/scope/internal/LowerTypeScopePropagator.java b/subprojects/store-reasoning-scope/src/main/java/tools/refinery/store/reasoning/scope/internal/LowerTypeScopePropagator.java
index b1c421b7..393c4b72 100644
--- a/subprojects/store-reasoning-scope/src/main/java/tools/refinery/store/reasoning/scope/internal/LowerTypeScopePropagator.java
+++ b/subprojects/store-reasoning-scope/src/main/java/tools/refinery/store/reasoning/scope/internal/LowerTypeScopePropagator.java
@@ -5,43 +5,55 @@
  */
 package tools.refinery.store.reasoning.scope.internal;
 
+import tools.refinery.store.dse.transition.DesignSpaceExplorationBuilder;
+import tools.refinery.store.dse.transition.objectives.Criteria;
+import tools.refinery.store.dse.transition.objectives.Objectives;
+import tools.refinery.store.model.ModelStoreBuilder;
 import tools.refinery.store.query.dnf.AnyQuery;
 import tools.refinery.store.query.dnf.Query;
 import tools.refinery.store.query.dnf.RelationalQuery;
+import tools.refinery.store.query.term.Variable;
+import tools.refinery.store.reasoning.ReasoningBuilder;
+import tools.refinery.store.reasoning.literal.CountCandidateLowerBoundLiteral;
 import tools.refinery.store.reasoning.representation.PartialRelation;
 
 import java.util.Collection;
 import java.util.List;
 
+import static tools.refinery.store.query.literal.Literals.check;
+import static tools.refinery.store.query.term.int_.IntTerms.*;
 import static tools.refinery.store.reasoning.literal.PartialLiterals.may;
+import static tools.refinery.store.reasoning.translator.multiobject.MultiObjectTranslator.MULTI_VIEW;
 
 class LowerTypeScopePropagator extends TypeScopePropagator {
         private final int lowerBound;
 
         private LowerTypeScopePropagator(ScopePropagatorAdapterImpl adapter, int lowerBound, RelationalQuery allQuery,
-                                                                        RelationalQuery multiQuery) {
+                                                                         RelationalQuery multiQuery) {
                 super(adapter, allQuery, multiQuery);
                 this.lowerBound = lowerBound;
         }
 
         @Override
         public void updateBounds() {
-                constraint.setLb(lowerBound - getSingleCount());
+                constraint.setLb((lowerBound - getSingleCount()));
         }
 
-        public static class Factory implements TypeScopePropagator.Factory {
+        public static class Factory extends TypeScopePropagator.Factory {
+                private final PartialRelation type;
                 private final int lowerBound;
                 private final RelationalQuery allMay;
                 private final RelationalQuery multiMay;
 
-                public Factory(RelationalQuery multi, PartialRelation type, int lowerBound) {
+                public Factory(PartialRelation type, int lowerBound) {
+                        this.type = type;
                         this.lowerBound = lowerBound;
                         allMay = Query.of(type.name() + "#may", (builder, instance) -> builder.clause(
                                         may(type.call(instance))
                         ));
                         multiMay = Query.of(type.name() + "#multiMay", (builder, instance) -> builder.clause(
                                         may(type.call(instance)),
-                                        multi.call(instance)
+                                        MULTI_VIEW.call(instance)
                         ));
                 }
 
@@ -51,8 +63,24 @@ class LowerTypeScopePropagator extends TypeScopePropagator {
                 }
 
                 @Override
-                public Collection<AnyQuery> getQueries() {
+                protected Collection<AnyQuery> getQueries() {
                         return List.of(allMay, multiMay);
                 }
+
+                @Override
+                public void configure(ModelStoreBuilder storeBuilder) {
+                        super.configure(storeBuilder);
+
+                        var requiredObjects = Query.of(type.name() + "#required", Integer.class, (builder, output) -> builder
+                                        .clause(Integer.class, currentCount -> List.of(
+                                                        new CountCandidateLowerBoundLiteral(currentCount, type, List.of(Variable.of())),
+                                                        output.assign(sub(currentCount, constant(lowerBound))),
+                                                        check(greater(currentCount, constant(0)))
+                                        )));
+
+                        storeBuilder.getAdapter(ReasoningBuilder.class).objective(Objectives.value(requiredObjects));
+                        storeBuilder.tryGetAdapter(DesignSpaceExplorationBuilder.class).ifPresent(dseBuilder ->
+                                        dseBuilder.accept(Criteria.whenNoMatch(requiredObjects)));
+                }
         }
 }