def _to_data_type(cls, field_type):
from pyflink.fn_execution import flink_fn_execution_pb2
if field_type.type_name == flink_fn_execution_pb2.Schema.TINYINT:
return TinyIntType(field_type.nullable)
elif field_type.type_name == flink_fn_execution_pb2.Schema.SMALLINT:
return SmallIntType(field_type.nullable)
elif field_type.type_name == flink_fn_execution_pb2.Schema.INT:
return IntType(field_type.nullable)
elif field_type.type_name == flink_fn_execution_pb2.Schema.BIGINT:
return BigIntType(field_type.nullable)
elif field_type.type_name == flink_fn_execution_pb2.Schema.BOOLEAN:
return BooleanType(field_type.nullable)
elif field_type.type_name == flink_fn_execution_pb2.Schema.FLOAT:
return FloatType(field_type.nullable)
elif field_type.type_name == flink_fn_execution_pb2.Schema.DOUBLE:
return DoubleType(field_type.nullable)
elif field_type.type_name == flink_fn_execution_pb2.Schema.VARCHAR:
return VarCharType(0x7fffffff, field_type.nullable)
elif field_type.type_name == flink_fn_execution_pb2.Schema.VARBINARY:
return VarBinaryType(0x7fffffff, field_type.nullable)
elif field_type.type_name == flink_fn_execution_pb2.Schema.DECIMAL:
return DecimalType(field_type.decimal_info.precision,
field_type.decimal_info.scale,
field_type.nullable)
elif field_type.type_name == flink_fn_execution_pb2.Schema.DATE:
return DateType(field_type.nullable)
elif field_type.type_name == flink_fn_execution_pb2.Schema.TIME:
return TimeType(field_type.time_info.precision,
field_type.nullable)
elif field_type.type_name == \
flink_fn_execution_pb2.Schema.LOCAL_ZONED_TIMESTAMP:
return LocalZonedTimestampType(
field_type.local_zoned_timestamp_info.precision,
field_type.nullable)
elif field_type.type_name == flink_fn_execution_pb2.Schema.TIMESTAMP:
return TimestampType(field_type.timestamp_info.precision,
field_type.nullable)
elif field_type.type_name == flink_fn_execution_pb2.Schema.BASIC_ARRAY:
return ArrayType(
cls._to_data_type(field_type.collection_element_type),
field_type.nullable)
elif field_type.type_name == flink_fn_execution_pb2.Schema.TypeName.ROW:
return RowType([
RowField(f.name, cls._to_data_type(f.type), f.description)
for f in field_type.row_schema.fields
], field_type.nullable)
else:
raise ValueError("field_type %s is not supported." % field_type)
def _to_row_type(row_schema):
return RowType([RowField(f.name, _to_data_type(f.type)) for f in row_schema.fields])