Remove MappedFieldType#nullValueQuery, as it is now unused.

Author: jtibshirani

modules/mapper-extras/src/main/java/org/elasticsearch/index/mapper/FeatureFieldMapper.java

@@ -163,14 +163,6 @@ public Query existsQuery(QueryShardContext context) {
             return new TermQuery(new Term("_feature", name()));
         }
 
-        @Override
-        public Query nullValueQuery() {
-            if (nullValue() == null) {
-                return null;
-            }
-            return termQuery(nullValue(), null);
-        }
-
         @Override
         public IndexFieldData.Builder fielddataBuilder(String fullyQualifiedIndexName) {
             failIfNoDocValues();

plugins/analysis-icu/src/main/java/org/elasticsearch/index/mapper/ICUCollationKeywordFieldMapper.java

@@ -135,14 +135,6 @@ public Query existsQuery(QueryShardContext context) {
             }
         }
 
-        @Override
-        public Query nullValueQuery() {
-            if (nullValue() == null) {
-                return null;
-            }
-            return termQuery(nullValue(), null);
-        }
-
         @Override
         public IndexFieldData.Builder fielddataBuilder(String fullyQualifiedIndexName) {
             failIfNoDocValues();

server/src/main/java/org/elasticsearch/index/mapper/KeywordFieldMapper.java

@@ -223,14 +223,6 @@ public Query existsQuery(QueryShardContext context) {
             }
         }
 
-        @Override
-        public Query nullValueQuery() {
-            if (nullValue() == null) {
-                return null;
-            }
-            return termQuery(nullValue(), null);
-        }
-
         @Override
         public IndexFieldData.Builder fielddataBuilder(String fullyQualifiedIndexName) {
             failIfNoDocValues();

server/src/main/java/org/elasticsearch/index/mapper/MappedFieldType.java

@@ -351,13 +351,6 @@ public Query regexpQuery(String value, int flags, int maxDeterminizedStates, @Nu
         throw new QueryShardException(context, "Can only use regexp queries on keyword and text fields - not on [" + name + "] which is of type [" + typeName() + "]");
     }
 
-    public Query nullValueQuery() {
-        if (nullValue == null) {
-            return null;
-        }
-        return new ConstantScoreQuery(termQuery(nullValue, null));
-    }
-
     public abstract Query existsQuery(QueryShardContext context);
 
     /**

server/src/main/java/org/elasticsearch/index/mapper/TextFieldMapper.java

@@ -24,7 +24,6 @@
 import org.apache.lucene.analysis.TokenFilter;
 import org.apache.lucene.analysis.ngram.EdgeNGramTokenFilter;
 import org.apache.lucene.document.Field;
-import org.apache.lucene.document.FieldType;
 import org.apache.lucene.index.IndexOptions;
 import org.apache.lucene.index.IndexableField;
 import org.apache.lucene.index.Term;
@@ -471,14 +470,6 @@ public Query existsQuery(QueryShardContext context) {
             }
         }
 
-        @Override
-        public Query nullValueQuery() {
-            if (nullValue() == null) {
-                return null;
-            }
-            return termQuery(nullValue(), null);
-        }
-
         @Override
         public IndexFieldData.Builder fielddataBuilder(String fullyQualifiedIndexName) {
             if (fielddata == false) {

server/src/test/java/org/elasticsearch/index/mapper/FakeStringFieldMapper.java

@@ -105,14 +105,6 @@ public String typeName() {
             return CONTENT_TYPE;
         }
 
-        @Override
-        public Query nullValueQuery() {
-            if (nullValue() == null) {
-                return null;
-            }
-            return termQuery(nullValue(), null);
-        }
-
         @Override
         public Query existsQuery(QueryShardContext context) {
             if (hasDocValues()) {
@@ -136,7 +128,7 @@ protected void parseCreateField(ParseContext context, List<IndexableField> field
         } else {
             value = context.parser().textOrNull();
         }
-        
+
         if (value == null) {
             return;
         }