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diff --git a/config-model/src/main/java/com/yahoo/searchdefinition/processing/Bolding.java b/config-model/src/main/java/com/yahoo/searchdefinition/processing/Bolding.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.searchdefinition.processing;
+
+import com.yahoo.config.application.api.DeployLogger;
+import com.yahoo.searchdefinition.RankProfileRegistry;
+import com.yahoo.document.DataType;
+import com.yahoo.searchdefinition.document.SDField;
+import com.yahoo.searchdefinition.Search;
+import com.yahoo.vespa.documentmodel.SummaryField;
+import com.yahoo.vespa.model.container.search.QueryProfiles;
+
+/**
+ * Checks that bolding or dynamic summary is turned on only for text fields. Throws exception if it is turned on for any
+ * other fields (otherwise will cause indexing failure)
+ *
+ * @author <a href="musum@yahoo-inc.com">Harald Musum</a>
+ */
+public class Bolding extends Processor {
+
+    public Bolding(Search search, DeployLogger deployLogger, RankProfileRegistry rankProfileRegistry, QueryProfiles queryProfiles) {
+        super(search, deployLogger, rankProfileRegistry, queryProfiles);
+    }
+
+    @Override
+    public void process() {
+        for (SDField field : search.allFieldsList()) {
+            for (SummaryField summary : field.getSummaryFields()) {
+                if (summary.getTransform().isBolded() &&
+                    !((summary.getDataType() == DataType.STRING) || (summary.getDataType() == DataType.URI)))
+                {
+                    throw new IllegalArgumentException("'bolding: on' for non-text field " +
+                                                       "'" + field.getName() + "'" +
+                                                       " (" + summary.getDataType() + ")" +
+                                                       " is not allowed");
+                } else if (summary.getTransform().isDynamic() &&
+                           !((summary.getDataType() == DataType.STRING) || (summary.getDataType() == DataType.URI)))
+                {
+                    throw new IllegalArgumentException("'summary: dynamic' for non-text field " +
+                                                       "'" + field.getName() + "'" +
+                                                       " (" + summary.getDataType() + ")" +
+                                                       " is not allowed");
+                }
+            }
+        }
+    }
+}