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1 files changed, 42 insertions, 0 deletions

diff --git a/container-search/src/main/java/com/yahoo/prelude/querytransform/NoRankingSearcher.java b/container-search/src/main/java/com/yahoo/prelude/querytransform/NoRankingSearcher.java
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+++ b/container-search/src/main/java/com/yahoo/prelude/querytransform/NoRankingSearcher.java
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+// Copyright 2016 Yahoo Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
+package com.yahoo.prelude.querytransform;
+
+
+import java.util.List;
+
+import com.yahoo.component.chain.dependencies.After;
+import com.yahoo.component.chain.dependencies.Before;
+import com.yahoo.search.Searcher;
+import com.yahoo.search.query.Sorting.FieldOrder;
+import com.yahoo.search.searchchain.Execution;
+
+
+/**
+ * Avoid doing relevance calculations if sorting only
+ * on attributes.
+ *
+ * @author Steinar Knutsen
+ */
+@After("rawQuery")
+@Before("transformedQuery")
+public class NoRankingSearcher extends Searcher {
+
+    private static final String RANK = "[rank]";
+    private static final String UNRANKED = "unranked";
+
+    @Override
+    public com.yahoo.search.Result search(com.yahoo.search.Query query, Execution execution) {
+        List<FieldOrder> s = (query.getRanking().getSorting() != null) ? query.getRanking().getSorting().fieldOrders() : null;
+        if (s == null) {
+            return execution.search(query);
+        }
+        for (FieldOrder f : s) {
+            if (RANK.equals(f.getFieldName())) {
+                return execution.search(query);
+            }
+        }
+        query.getRanking().setProfile(UNRANKED);
+        return execution.search(query);
+    }
+
+}