1 files changed, 5 insertions, 0 deletions

diff --git a/subprojects/store-query/src/main/java/tools/refinery/store/query/literal/PolarLiteral.java b/subprojects/store-query/src/main/java/tools/refinery/store/query/literal/PolarLiteral.java
new file mode 100644
index 00000000..32523675
--- /dev/null
+++ b/subprojects/store-query/src/main/java/tools/refinery/store/query/literal/PolarLiteral.java
@@ -0,0 +1,5 @@
+package tools.refinery.store.query.literal;
+
+public interface PolarLiteral<T extends PolarLiteral<T>> extends Literal {
+        T negate();
+}