1 files changed, 40 insertions, 0 deletions
diff --git a/config-model/src/main/java/com/yahoo/schema/processing/ImplicitSummaryFields.java b/config-model/src/main/java/com/yahoo/schema/processing/ImplicitSummaryFields.java
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+++ b/config-model/src/main/java/com/yahoo/schema/processing/ImplicitSummaryFields.java
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+// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
+package com.yahoo.schema.processing;
+
+import com.yahoo.config.application.api.DeployLogger;
+import com.yahoo.schema.RankProfileRegistry;
+import com.yahoo.document.DataType;
+import com.yahoo.schema.Schema;
+import com.yahoo.vespa.documentmodel.DocumentSummary;
+import com.yahoo.vespa.documentmodel.SummaryField;
+import com.yahoo.vespa.documentmodel.SummaryTransform;
+import com.yahoo.vespa.model.container.search.QueryProfiles;
+
+/**
+ * This processor adds all implicit summary fields to all registered document summaries. If another field has already
+ * been registered with one of the implicit names, this processor will throw an {@link IllegalStateException}.
+ */
+public class ImplicitSummaryFields extends Processor {
+
+    public ImplicitSummaryFields(Schema schema, DeployLogger deployLogger, RankProfileRegistry rankProfileRegistry, QueryProfiles queryProfiles) {
+        super(schema, deployLogger, rankProfileRegistry, queryProfiles);
+    }
+
+    @Override
+    public void process(boolean validate, boolean documentsOnly) {
+        for (DocumentSummary docsum : schema.getSummariesInThis().values()) {
+            if (docsum.inherited().isPresent()) continue; // Implicit fields are added to inheriting summaries through their parent
+            addField(docsum, new SummaryField("rankfeatures", DataType.STRING, SummaryTransform.RANKFEATURES), validate);
+            addField(docsum, new SummaryField("summaryfeatures", DataType.STRING, SummaryTransform.SUMMARYFEATURES), validate);
+        }
+    }
+
+    private void addField(DocumentSummary docsum, SummaryField field, boolean validate) {
+        if (validate && docsum.getSummaryField(field.getName()) != null) {
+            throw new IllegalArgumentException("Summary class '" + docsum.getName() + "' uses reserved field name '" +
+                                               field.getName() + "'.");
+        }
+        docsum.add(field);
+    }
+
+}