Expose several methods as public (#2612)

* Expose several methods as public

* Added comment internal API do not use.

Author: mzitnik

client-v2/src/main/java/com/clickhouse/client/api/data_formats/internal/SerializerUtils.java

@@ -415,6 +415,9 @@ public static void writeDynamicTypeTag(OutputStream stream, ClickHouseColumn typ
         }
     }
 
+    /**
+     DO NOT USE - part of internal API that will be changed
+     */
     public static void serializeArrayData(OutputStream stream, Object value, ClickHouseColumn column) throws IOException {
         if (value == null) {
             writeVarInt(stream, 0);
@@ -441,7 +444,10 @@ public static void serializeArrayData(OutputStream stream, Object value, ClickHo
         }
     }
 
-    private static void serializeTupleData(OutputStream stream, Object value, ClickHouseColumn column) throws IOException {
+    /**
+     DO NOT USE - part of internal API that will be changed
+     */
+    public static void serializeTupleData(OutputStream stream, Object value, ClickHouseColumn column) throws IOException {
         //Serialize the tuple to the stream
         //The tuple is a list of values
         if (value instanceof List) {
@@ -459,7 +465,10 @@ private static void serializeTupleData(OutputStream stream, Object value, ClickH
         }
     }
 
-    private static void serializeMapData(OutputStream stream, Object value, ClickHouseColumn column) throws IOException {
+    /**
+     DO NOT USE - part of internal API that will be changed
+     */
+    public static void serializeMapData(OutputStream stream, Object value, ClickHouseColumn column) throws IOException {
         //Serialize the map to the stream
         //The map is a list of key-value pairs
         Map<?, ?> map = (Map<?, ?>) value;
@@ -600,7 +609,7 @@ private static void serializePrimitiveData(OutputStream stream, Object value, Cl
         }
     }
 
-    private static void serializeInterval(OutputStream stream, ClickHouseColumn column, Object value) throws IOException {
+    public static void serializeInterval(OutputStream stream, ClickHouseColumn column, Object value) throws IOException {
         long v;
 
         if (value instanceof Duration) {
@@ -670,7 +679,7 @@ private static void serializeTime64(OutputStream stream, Object value) throws IO
         }
     }
 
-    private static void serializeEnumData(OutputStream stream, ClickHouseColumn column, Object value) throws IOException {
+    public static void serializeEnumData(OutputStream stream, ClickHouseColumn column, Object value) throws IOException {
         int enumValue = -1;
         if (value instanceof String) {
             enumValue = column.getEnumConstants().value((String) value);
@@ -691,15 +700,15 @@ private static void serializeEnumData(OutputStream stream, ClickHouseColumn colu
         }
     }
 
-    private static void serializeJSON(OutputStream stream, Object value) throws IOException {
+    public static void serializeJSON(OutputStream stream, Object value) throws IOException {
         if (value instanceof String) {
             BinaryStreamUtils.writeString(stream, (String)value);
         } else {
             throw new UnsupportedOperationException("Serialization of Java object to JSON is not supported yet.");
         }
     }
 
-    private static void serializerVariant(OutputStream out, ClickHouseColumn column, Object value) throws IOException {
+    public static void serializerVariant(OutputStream out, ClickHouseColumn column, Object value) throws IOException {
         int typeOrdNum = column.getVariantOrdNum(value);
         if (typeOrdNum != -1) {
             BinaryStreamUtils.writeUnsignedInt8(out, typeOrdNum);
@@ -714,7 +723,7 @@ private static void serializerVariant(OutputStream out, ClickHouseColumn column,
     private static final ClickHouseColumn GEO_POLYGON_ARRAY = ClickHouseColumn.parse("geopolygin Array(Array(Tuple(Float64, Float64)))").get(0);
     private static final ClickHouseColumn GEO_MULTI_POLYGON_ARRAY = ClickHouseColumn.parse("geomultipolygin Array(Array(Array(Tuple(Float64, Float64))))").get(0);
 
-    private static void serializeAggregateFunction(OutputStream stream, Object value, ClickHouseColumn column) throws IOException {
+    public static void serializeAggregateFunction(OutputStream stream, Object value, ClickHouseColumn column) throws IOException {
         if (column.getAggregateFunction() == ClickHouseAggregateFunction.groupBitmap) {
             if (value == null) {
                 throw new IllegalArgumentException("Cannot serialize null value for aggregate function: " + column.getAggregateFunction());