1 files changed, 26 insertions, 0 deletions
diff --git a/container-search/src/main/java/com/yahoo/search/grouping/request/EachOperation.java b/container-search/src/main/java/com/yahoo/search/grouping/request/EachOperation.java
new file mode 100644
index 00000000000..12f6df1f497
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+++ b/container-search/src/main/java/com/yahoo/search/grouping/request/EachOperation.java
@@ -0,0 +1,26 @@
+// Copyright 2016 Yahoo Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
+package com.yahoo.search.grouping.request;
+
+/**
+ * This is a grouping operation that processes each element of the input list separately, as opposed to {@link
+ * AllOperation} which processes that list as a whole.
+ *
+ * @author <a href="mailto:simon@yahoo-inc.com">Simon Thoresen</a>
+ */
+public class EachOperation extends GroupingOperation {
+
+    /**
+     * Constructs a new instance of this class.
+     */
+    public EachOperation() {
+        super("each");
+    }
+
+    @Override
+    public void resolveLevel(int level) {
+        if (level == 0) {
+            throw new IllegalArgumentException("Operation '" + this + "' can not operate on " + getLevelDesc(level) + ".");
+        }
+        super.resolveLevel(level - 1);
+    }
+}