1 files changed, 19 insertions, 0 deletions

diff --git a/subprojects/store-query/src/main/java/tools/refinery/store/query/literal/ConstantLiteral.java b/subprojects/store-query/src/main/java/tools/refinery/store/query/literal/ConstantLiteral.java
new file mode 100644
index 00000000..746d23af
--- /dev/null
+++ b/subprojects/store-query/src/main/java/tools/refinery/store/query/literal/ConstantLiteral.java
@@ -0,0 +1,19 @@
+package tools.refinery.store.query.literal;
+
+import tools.refinery.store.query.DnfUtils;
+import tools.refinery.store.query.Variable;
+
+import java.util.Map;
+import java.util.Set;
+
+public record ConstantLiteral(Variable variable, int nodeId) implements Literal {
+        @Override
+        public void collectAllVariables(Set<Variable> variables) {
+                variables.add(variable);
+        }
+
+        @Override
+        public ConstantLiteral substitute(Map<Variable, Variable> substitution) {
+                return new ConstantLiteral(DnfUtils.maybeSubstitute(variable, substitution), nodeId);
+        }
+}