1 files changed, 22 insertions, 0 deletions
diff --git a/config-model/src/main/java/com/yahoo/schema/fieldoperation/FieldOperation.java b/config-model/src/main/java/com/yahoo/schema/fieldoperation/FieldOperation.java
new file mode 100644
index 00000000000..126f594c371
--- /dev/null
+++ b/config-model/src/main/java/com/yahoo/schema/fieldoperation/FieldOperation.java
@@ -0,0 +1,22 @@
+// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
+package com.yahoo.schema.fieldoperation;
+
+import com.yahoo.schema.document.SDField;
+
+/**
+ * An operation on a field. 
+ * Operations has a natural order of execution.
+ * 
+ * @author Einar M R Rosenvinge
+ */
+public interface FieldOperation extends Comparable<FieldOperation> {
+
+    /** Apply this operation on the given field */
+    void apply(SDField field);
+    
+    @Override
+    default int compareTo(FieldOperation other) {
+        return 0; // no order by default
+    }
+
+}