presto-hive/src/main/java/io/prestosql/plugin/hive/util/HiveWriteUtils.java/HiveWriteUtils/CharFieldSetter
class HiveWriteUtils:        public CharFieldSetter(SettableStructObjectInspector rowInspector, Object row, StructField field, Type type)
        {
            super(rowInspector, row, field);
            this.type = type;
        }