1 files changed, 17 insertions, 0 deletions

diff --git a/subprojects/logic/src/main/java/tools/refinery/logic/dnf/callback/ClauseCallback4Data2.java b/subprojects/logic/src/main/java/tools/refinery/logic/dnf/callback/ClauseCallback4Data2.java
new file mode 100644
index 00000000..829dbcf8
--- /dev/null
+++ b/subprojects/logic/src/main/java/tools/refinery/logic/dnf/callback/ClauseCallback4Data2.java
@@ -0,0 +1,17 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
+package tools.refinery.logic.dnf.callback;
+
+import tools.refinery.logic.literal.Literal;
+import tools.refinery.logic.term.DataVariable;
+import tools.refinery.logic.term.NodeVariable;
+
+import java.util.Collection;
+
+@FunctionalInterface
+public interface ClauseCallback4Data2<T1, T2> {
+        Collection<Literal> toLiterals(NodeVariable v1, NodeVariable v2, DataVariable<T1> d1, DataVariable<T2> d2);
+}