Allow plugins to access/override some functions of ParametrizedFieldMapper; Modify the the constructor of the MappedFieldType to support FilterFieldType.

Signed-off-by: Bo Zhang <[email protected]>

Author: bzhangam

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

@@ -101,7 +101,7 @@ public MappedFieldType(
         TextSearchInfo textSearchInfo,
         Map<String, String> meta
     ) {
-        setBoost(1.0f);
+        this.boost = 1.0f;
         this.name = Objects.requireNonNull(name);
         this.isIndexed = isIndexed;
         this.isStored = isStored;

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

@@ -95,7 +95,7 @@ protected ParametrizedFieldMapper(String simpleName, MappedFieldType mappedField
     public abstract ParametrizedFieldMapper.Builder getMergeBuilder();
 
     @Override
-    public final ParametrizedFieldMapper merge(Mapper mergeWith) {
+    public ParametrizedFieldMapper merge(Mapper mergeWith) {
 
         if (mergeWith instanceof FieldMapper == false) {
             throw new IllegalArgumentException(
@@ -348,7 +348,7 @@ private void merge(FieldMapper toMerge, Conflicts conflicts) {
             }
         }
 
-        protected void toXContent(XContentBuilder builder, boolean includeDefaults) throws IOException {
+        public void toXContent(XContentBuilder builder, boolean includeDefaults) throws IOException {
             if (serializerCheck.check(includeDefaults, isConfigured(), get())) {
                 serializer.serialize(builder, name, getValue());
             }
@@ -649,7 +649,7 @@ protected String buildFullName(BuilderContext context) {
         /**
          * Writes the current builder parameter values as XContent
          */
-        protected final void toXContent(XContentBuilder builder, boolean includeDefaults) throws IOException {
+        public final void toXContent(XContentBuilder builder, boolean includeDefaults) throws IOException {
             for (Parameter<?> parameter : getParameters()) {
                 parameter.toXContent(builder, includeDefaults);
             }