CalciteSerializer#
Public API#
- class modin.experimental.core.execution.native.implementations.hdk_on_native.calcite_serializer.CalciteSerializer#
Serializer for calcite node sequence.
CalciteSerializeris used to serialize a sequence ofCalciteBaseNodebased nodes including nestedBaseExprbased expression trees into a request in JSON format which can be fed to HDK.- expect_one_of(val, *types)#
Raise an error if values doesn’t belong to any of specified types.
- Parameters
val (Any) – Value to check.
*types (list of type) – Allowed value types.
- opts_for_int_type(int_type)#
Get serialization params for an integer type.
Return a SQL type name and a number of meaningful decimal digits for an integer type.
- Parameters
int_type (type) – An integer type to describe.
- Return type
tuple
- serialize(plan)#
Serialize a sequence of Calcite nodes into JSON format.
- Parameters
plan (list of CalciteBaseNode) – A sequence to serialize.
- Returns
A query in JSON format.
- Return type
str
- serialize_dtype(dtype)#
Serialize data type to a dictionary.
- Parameters
dtype (dtype) – Data type to serialize.
- Returns
Serialized data type.
- Return type
dict
- serialize_expr(expr)#
Serialize
BaseExprbased expression into a dictionary.- Parameters
expr (BaseExpr) – An expression to serialize.
- Returns
Serialized expression.
- Return type
dict
- serialize_input_idx(expr)#
Serialize
CalciteInputIdxExprexpression.- Parameters
expr (CalciteInputIdxExpr) – An expression to serialize.
- Returns
Serialized expression.
- Return type
int
- serialize_item(item)#
Serialize a single expression item.
- Parameters
item (Any) – Item to serialize.
- Returns
Serialized item.
- Return type
str, int, dict or list of dict
- serialize_literal(literal)#
Serialize
LiteralExprinto a dictionary.- Parameters
literal (LiteralExpr) – A literal to serialize.
- Returns
Serialized literal.
- Return type
dict
- serialize_node(node)#
Serialize a frame operation.
- Parameters
node (CalciteBaseNode) – A node to serialize.
- Returns
Serialized object.
- Return type
dict
- serialize_obj(obj)#
Serialize an object into a dictionary.
Add all non-hidden attributes (not starting with ‘_’) of the object to the output dictionary.
- Parameters
obj (object) – An object to serialize.
- Returns
Serialized object.
- Return type
dict
- serialize_typed_obj(obj)#
Serialize an object and its dtype into a dictionary.
Similar to serialize_obj but also include ‘_dtype’ field of the object under ‘type’ key.
- Parameters
obj (object) – An object to serialize.
- Returns
Serialized object.
- Return type
dict