1 files changed, 21 insertions, 0 deletions

diff --git a/subprojects/store-dse/src/main/java/tools/refinery/store/dse/transition/statespace/ObjectivePriorityQueue.java b/subprojects/store-dse/src/main/java/tools/refinery/store/dse/transition/statespace/ObjectivePriorityQueue.java
new file mode 100644
index 00000000..df72c343
--- /dev/null
+++ b/subprojects/store-dse/src/main/java/tools/refinery/store/dse/transition/statespace/ObjectivePriorityQueue.java
@@ -0,0 +1,21 @@
+/*
+ * SPDX-FileCopyrightText: 2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
+package tools.refinery.store.dse.transition.statespace;
+
+import tools.refinery.store.dse.transition.VersionWithObjectiveValue;
+import tools.refinery.store.map.Version;
+
+import java.util.Comparator;
+import java.util.Random;
+
+public interface ObjectivePriorityQueue {
+        Comparator<VersionWithObjectiveValue> getComparator();
+        void submit(VersionWithObjectiveValue versionWithObjectiveValue);
+        void remove(VersionWithObjectiveValue versionWithObjectiveValue);
+        int getSize();
+        VersionWithObjectiveValue getBest();
+        VersionWithObjectiveValue getRandom(Random random);
+}