Add fieldType to AbstractQueryBuilder and SortBuilder

CHANGELOG.md

@@ -36,6 +36,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 - [Workload Management] Add rejection logic for co-ordinator and shard level requests ([#15428](https://github.com/opensearch-project/OpenSearch/pull/15428)))
 - Adding translog durability validation in index templates ([#15494](https://github.com/opensearch-project/OpenSearch/pull/15494))
 - Add index creation using the context field ([#15290](https://github.com/opensearch-project/OpenSearch/pull/15290))
+- Add fieldType to AbstractQueryBuilder and FieldSortBuilder ([#15328](https://github.com/opensearch-project/OpenSearch/pull/15328)))
 - [Reader Writer Separation] Add searchOnly replica routing configuration ([#15410](https://github.com/opensearch-project/OpenSearch/pull/15410))
 
 ### Dependencies

modules/mapper-extras/src/main/java/org/opensearch/index/query/RankFeatureQueryBuilder.java

@@ -400,6 +400,11 @@ protected void doXContent(XContentBuilder builder, Params params) throws IOExcep
         builder.endObject();
     }
 
+    @Override
+    public final String fieldName() {
+        return getDefaultFieldName();
+    }
+
     @Override
     protected Query doToQuery(QueryShardContext context) throws IOException {
         final MappedFieldType ft = context.fieldMapper(field);

modules/parent-join/src/main/java/org/opensearch/join/query/HasChildQueryBuilder.java

@@ -264,6 +264,11 @@ protected void doXContent(XContentBuilder builder, Params params) throws IOExcep
         builder.endObject();
     }
 
+    @Override
+    public final String fieldName() {
+        return getDefaultFieldName();
+    }
+
     public static HasChildQueryBuilder fromXContent(XContentParser parser) throws IOException {
         float boost = AbstractQueryBuilder.DEFAULT_BOOST;
         String childType = null;

modules/parent-join/src/main/java/org/opensearch/join/query/HasParentQueryBuilder.java

@@ -233,6 +233,11 @@ protected void doXContent(XContentBuilder builder, Params params) throws IOExcep
         builder.endObject();
     }
 
+    @Override
+    public final String fieldName() {
+        return getDefaultFieldName();
+    }
+
     public static HasParentQueryBuilder fromXContent(XContentParser parser) throws IOException {
         float boost = AbstractQueryBuilder.DEFAULT_BOOST;
         String parentType = null;

modules/parent-join/src/main/java/org/opensearch/join/query/ParentIdQueryBuilder.java

@@ -130,6 +130,11 @@ protected void doXContent(XContentBuilder builder, Params params) throws IOExcep
         builder.endObject();
     }
 
+    @Override
+    public final String fieldName() {
+        return getDefaultFieldName();
+    }
+
     public static ParentIdQueryBuilder fromXContent(XContentParser parser) throws IOException {
         float boost = AbstractQueryBuilder.DEFAULT_BOOST;
         String type = null;

modules/percolator/src/main/java/org/opensearch/percolator/PercolateQueryBuilder.java

@@ -356,6 +356,11 @@ protected void doXContent(XContentBuilder builder, Params params) throws IOExcep
         builder.endObject();
     }
 
+    @Override
+    public final String fieldName() {
+        return getDefaultFieldName();
+    }
+
     private static final ConstructingObjectParser<PercolateQueryBuilder, Void> PARSER = new ConstructingObjectParser<>(NAME, args -> {
         String field = (String) args[0];
         BytesReference document = (BytesReference) args[1];

server/src/main/java/org/opensearch/index/mapper/FieldTypeLookup.java

@@ -101,7 +101,8 @@ class FieldTypeLookup implements Iterable<MappedFieldType> {
     }
 
     /**
-     * Returns the mapped field type for the given field name.
+     * Returns the {@link MappedFieldType} for the given field name
+     * or null if the field name is not found.
      */
     public MappedFieldType get(String field) {
         String concreteField = aliasToConcreteName.getOrDefault(field, field);

server/src/main/java/org/opensearch/index/mapper/MapperService.java

@@ -622,7 +622,8 @@ public DocumentMapperForType documentMapperWithAutoCreate() {
     }
 
     /**
-     * Given the full name of a field, returns its {@link MappedFieldType}.
+     * Given the full name of a field, returns its {@link MappedFieldType}
+     * or null if the field is not found.
      */
     public MappedFieldType fieldType(String fullName) {
         return this.mapper == null ? null : this.mapper.fieldTypes().get(fullName);

server/src/main/java/org/opensearch/index/query/AbstractQueryBuilder.java

@@ -74,6 +74,7 @@
     public static final ParseField BOOST_FIELD = new ParseField("boost");
 
     protected String queryName;
+    protected String fieldType;
     protected float boost = DEFAULT_BOOST;
 
     protected AbstractQueryBuilder() {
@@ -112,6 +113,27 @@
         }
     }
 
+    /**
+     * Returns field name as String.
+     * Abstract method to be implemented by all child classes.
+     */
+    public abstract String fieldName();
+
+    /**
+     * Default method for child classes which do not have a custom {@link #fieldName()} implementation.
+     */
+    protected static String getDefaultFieldName() {
+        return null;
+    };
+
+    /**
+     * Returns field type as String for QueryBuilder classes which have a defined fieldName.
+     * Else returns null.
+     */
+    public final String getFieldType() {
+        return fieldType;
+    };
+
     @Override
     public final Query toQuery(QueryShardContext context) throws IOException {
         Query query = doToQuery(context);
@@ -125,6 +147,7 @@
                 context.addNamedQuery(queryName, query);
             }
         }
+        fieldType = context.getFieldTypeString(fieldName());
         return query;
     }
 

server/src/main/java/org/opensearch/index/query/BoolQueryBuilder.java

@@ -270,6 +270,11 @@ protected void doXContent(XContentBuilder builder, Params params) throws IOExcep
         builder.endObject();
     }
 
+    @Override
+    public final String fieldName() {
+        return getDefaultFieldName();
+    }
+
     private static void doXArrayContent(ParseField field, List<QueryBuilder> clauses, XContentBuilder builder, Params params)
         throws IOException {
         if (clauses.isEmpty()) {

server/src/main/java/org/opensearch/index/query/BoostingQueryBuilder.java

@@ -151,6 +151,11 @@ protected void doXContent(XContentBuilder builder, Params params) throws IOExcep
         builder.endObject();
     }
 
+    @Override
+    public final String fieldName() {
+        return getDefaultFieldName();
+    }
+
     public static BoostingQueryBuilder fromXContent(XContentParser parser) throws IOException {
         QueryBuilder positiveQuery = null;
         boolean positiveQueryFound = false;

server/src/main/java/org/opensearch/index/query/ConstantScoreQueryBuilder.java

@@ -101,6 +101,11 @@ protected void doXContent(XContentBuilder builder, Params params) throws IOExcep
         builder.endObject();
     }
 
+    @Override
+    public final String fieldName() {
+        return getDefaultFieldName();
+    }
+
     public static ConstantScoreQueryBuilder fromXContent(XContentParser parser) throws IOException {
         QueryBuilder query = null;
         boolean queryFound = false;

server/src/main/java/org/opensearch/index/query/DisMaxQueryBuilder.java

@@ -137,6 +137,11 @@ protected void doXContent(XContentBuilder builder, Params params) throws IOExcep
         builder.endObject();
     }
 
+    @Override
+    public final String fieldName() {
+        return getDefaultFieldName();
+    }
+
     public static DisMaxQueryBuilder fromXContent(XContentParser parser) throws IOException {
         float boost = AbstractQueryBuilder.DEFAULT_BOOST;
         float tieBreaker = DisMaxQueryBuilder.DEFAULT_TIE_BREAKER;

server/src/main/java/org/opensearch/index/query/DistanceFeatureQueryBuilder.java

@@ -136,7 +136,8 @@ protected Query doToQuery(QueryShardContext context) throws IOException {
         return fieldType.distanceFeatureQuery(origin.origin(), pivot, 1.0f, context);
     }
 
-    String fieldName() {
+    @Override
+    public String fieldName() {
         return field;
     }
 

server/src/main/java/org/opensearch/index/query/IdsQueryBuilder.java

@@ -132,6 +132,11 @@ protected void doXContent(XContentBuilder builder, Params params) throws IOExcep
         builder.endObject();
     }
 
+    @Override
+    public final String fieldName() {
+        return getDefaultFieldName();
+    }
+
     private static final ObjectParser<IdsQueryBuilder, Void> PARSER = new ObjectParser<>(NAME, IdsQueryBuilder::new);
 
     static {

server/src/main/java/org/opensearch/index/query/IntervalQueryBuilder.java

@@ -95,6 +95,11 @@ protected void doXContent(XContentBuilder builder, Params params) throws IOExcep
         builder.endObject();
     }
 
+    @Override
+    public final String fieldName() {
+        return getDefaultFieldName();
+    }
+
     public static IntervalQueryBuilder fromXContent(XContentParser parser) throws IOException {
         if (parser.nextToken() != XContentParser.Token.FIELD_NAME) {
             throw new ParsingException(parser.getTokenLocation(), "Expected [FIELD_NAME] but got [" + parser.currentToken() + "]");

server/src/main/java/org/opensearch/index/query/MatchAllQueryBuilder.java

@@ -72,6 +72,11 @@ protected void doXContent(XContentBuilder builder, Params params) throws IOExcep
         builder.endObject();
     }
 
+    @Override
+    public final String fieldName() {
+        return getDefaultFieldName();
+    }
+
     private static final ObjectParser<MatchAllQueryBuilder, Void> PARSER = new ObjectParser<>(NAME, MatchAllQueryBuilder::new);
 
     static {

server/src/main/java/org/opensearch/index/query/MatchNoneQueryBuilder.java

@@ -71,6 +71,11 @@ protected void doXContent(XContentBuilder builder, Params params) throws IOExcep
         builder.endObject();
     }
 
+    @Override
+    public final String fieldName() {
+        return getDefaultFieldName();
+    }
+
     public static MatchNoneQueryBuilder fromXContent(XContentParser parser) throws IOException {
         String currentFieldName = null;
         XContentParser.Token token;

server/src/main/java/org/opensearch/index/query/MoreLikeThisQueryBuilder.java

@@ -792,6 +792,11 @@ protected void doXContent(XContentBuilder builder, Params params) throws IOExcep
         builder.endObject();
     }
 
+    @Override
+    public final String fieldName() {
+        return getDefaultFieldName();
+    }
+
     public static MoreLikeThisQueryBuilder fromXContent(XContentParser parser) throws IOException {
         // document inputs
         List<String> fields = null;

server/src/main/java/org/opensearch/index/query/MultiMatchQueryBuilder.java

@@ -631,6 +631,11 @@ public void doXContent(XContentBuilder builder, Params params) throws IOExceptio
         builder.endObject();
     }
 
+    @Override
+    public final String fieldName() {
+        return getDefaultFieldName();
+    }
+
     public static MultiMatchQueryBuilder fromXContent(XContentParser parser) throws IOException {
         Object value = null;
         Map<String, Float> fieldsBoosts = new HashMap<>();

server/src/main/java/org/opensearch/index/query/NestedQueryBuilder.java

@@ -205,6 +205,11 @@ protected void doXContent(XContentBuilder builder, Params params) throws IOExcep
         builder.endObject();
     }
 
+    @Override
+    public final String fieldName() {
+        return getDefaultFieldName();
+    }
+
     public static NestedQueryBuilder fromXContent(XContentParser parser) throws IOException {
         float boost = AbstractQueryBuilder.DEFAULT_BOOST;
         ScoreMode scoreMode = ScoreMode.Avg;

server/src/main/java/org/opensearch/index/query/QueryShardContext.java

@@ -364,6 +364,22 @@ public MappedFieldType fieldMapper(String name) {
         return failIfFieldMappingNotFound(name, mapperService.fieldType(name));
     }
 
+    /**
+     * Returns field type as String for the given field name.
+     * If field is not mapped or mapperService is null, returns null.
+     */
+    public String getFieldTypeString(String fieldName) {
+        if (fieldName != null) {
+            if (mapperService != null) {
+                MappedFieldType mappedFieldType = mapperService.fieldType(fieldName);
+                if (mappedFieldType != null) {
+                    return mappedFieldType.typeName();
+                }
+            }
+        }
+        return null;
+    }
+
     public ObjectMapper getObjectMapper(String name) {
         return mapperService.getObjectMapper(name);
     }

server/src/main/java/org/opensearch/index/query/QueryStringQueryBuilder.java

@@ -647,6 +647,11 @@ protected void doXContent(XContentBuilder builder, Params params) throws IOExcep
         builder.endObject();
     }
 
+    @Override
+    public final String fieldName() {
+        return getDefaultFieldName();
+    }
+
     public static QueryStringQueryBuilder fromXContent(XContentParser parser) throws IOException {
         String currentFieldName = null;
         XContentParser.Token token;

server/src/main/java/org/opensearch/index/query/ScriptQueryBuilder.java

@@ -106,6 +106,11 @@ protected void doXContent(XContentBuilder builder, Params builderParams) throws
         builder.endObject();
     }
 
+    @Override
+    public final String fieldName() {
+        return getDefaultFieldName();
+    }
+
     public static ScriptQueryBuilder fromXContent(XContentParser parser) throws IOException {
         // also, when caching, since its isCacheable is false, will result in loading all bit set...
         Script script = null;

server/src/main/java/org/opensearch/index/query/SimpleQueryStringBuilder.java

@@ -479,6 +479,11 @@ protected void doXContent(XContentBuilder builder, Params params) throws IOExcep
         builder.endObject();
     }
 
+    @Override
+    public final String fieldName() {
+        return getDefaultFieldName();
+    }
+
     public static SimpleQueryStringBuilder fromXContent(XContentParser parser) throws IOException {
         String currentFieldName = null;
         String queryBody = null;

server/src/main/java/org/opensearch/index/query/SpanContainingQueryBuilder.java

@@ -117,6 +117,11 @@ protected void doXContent(XContentBuilder builder, Params params) throws IOExcep
         builder.endObject();
     }
 
+    @Override
+    public final String fieldName() {
+        return getDefaultFieldName();
+    }
+
     public static SpanContainingQueryBuilder fromXContent(XContentParser parser) throws IOException {
         float boost = AbstractQueryBuilder.DEFAULT_BOOST;
         String queryName = null;

server/src/main/java/org/opensearch/index/query/SpanFirstQueryBuilder.java

@@ -120,6 +120,11 @@ protected void doXContent(XContentBuilder builder, Params params) throws IOExcep
         builder.endObject();
     }
 
+    @Override
+    public final String fieldName() {
+        return getDefaultFieldName();
+    }
+
     public static SpanFirstQueryBuilder fromXContent(XContentParser parser) throws IOException {
         float boost = AbstractQueryBuilder.DEFAULT_BOOST;
 

server/src/main/java/org/opensearch/index/query/SpanMultiTermQueryBuilder.java

@@ -99,6 +99,11 @@ protected void doXContent(XContentBuilder builder, Params params) throws IOExcep
         builder.endObject();
     }
 
+    @Override
+    public final String fieldName() {
+        return getDefaultFieldName();
+    }
+
     public static SpanMultiTermQueryBuilder fromXContent(XContentParser parser) throws IOException {
         String currentFieldName = null;
         MultiTermQueryBuilder subQuery = null;

server/src/main/java/org/opensearch/index/query/SpanNearQueryBuilder.java

@@ -167,6 +167,11 @@ protected void doXContent(XContentBuilder builder, Params params) throws IOExcep
         builder.endObject();
     }
 
+    @Override
+    public final String fieldName() {
+        return getDefaultFieldName();
+    }
+
     public static SpanNearQueryBuilder fromXContent(XContentParser parser) throws IOException {
         float boost = AbstractQueryBuilder.DEFAULT_BOOST;
         int slop = DEFAULT_SLOP;

server/src/main/java/org/opensearch/index/query/SpanNotQueryBuilder.java

@@ -181,6 +181,11 @@ protected void doXContent(XContentBuilder builder, Params params) throws IOExcep
         builder.endObject();
     }
 
+    @Override
+    public final String fieldName() {
+        return getDefaultFieldName();
+    }
+
     public static SpanNotQueryBuilder fromXContent(XContentParser parser) throws IOException {
         float boost = AbstractQueryBuilder.DEFAULT_BOOST;