Module types 

Structs

DFBool8

Defines the extension type logic for the canonical arrow.bool8 extension type. This extension type allows storing a Boolean value in a single byte, instead of a single bit.

DFFixedShapeTensor

Defines the extension type logic for the canonical arrow.fixed_shape_tensor extension type. This extension type can be used to store a tensor of a fixed shape.

DFJson

Defines the extension type logic for the canonical arrow.json extension type. This extension type defines that a particular string field stores JSON values.

DFOpaque

Defines the extension type logic for the canonical arrow.opaque extension type. This extension type represents types that DataFusion cannot interpret.

DFTimestampWithOffset

Defines the extension type logic for the canonical arrow.timestamp_with_offset extension type. This extension type allows associating a different offset for each timestamp in a column.

DFUuid

Defines the extension type logic for the canonical arrow.uuid extension type. This extension type defines that a field should be interpreted as a UUID.

DFVariableShapeTensor

Defines the extension type logic for the canonical arrow.variable_shape_tensor extension type. This extension type can be used to store a tensor with variable shape that can change for each element.

LogicalField

A record of a logical type, its name and its nullability.

LogicalFields

A cheaply cloneable, owned collection of LogicalFieldRef.

LogicalUnionFields

A cheaply cloneable, owned collection of LogicalFieldRef and their corresponding type ids.

Enums

NativeType

Representation of a type that DataFusion can handle natively. It is a subset of the physical variants in Arrow’s native DataType.

TypeParameter

TypeSignature

Signature that uniquely identifies a type among other types.

Traits

DFExtensionType

Represents an implementation of a DataFusion extension type, including the storage DataType. While, in general, an extension type can support several different storage types, a specific instance of it is always locked into just one exact storage type and metadata pairing.

LogicalType

Representation of a logical type with its signature and its native backing type.

Functions

logical_binary

Getter for singleton instance of a logical type representing NativeType::Binary.

logical_boolean

Getter for singleton instance of a logical type representing NativeType::Boolean.

logical_date

Getter for singleton instance of a logical type representing NativeType::Date.

logical_duration_microsecond

Getter for singleton instance of a logical type representing NativeType::Duration of unit Microsecond.`

logical_float16

Getter for singleton instance of a logical type representing NativeType::Float16.

logical_float32

Getter for singleton instance of a logical type representing NativeType::Float32.

logical_float64

Getter for singleton instance of a logical type representing NativeType::Float64.

logical_int8

Getter for singleton instance of a logical type representing NativeType::Int8.

logical_int16

Getter for singleton instance of a logical type representing NativeType::Int16.

logical_int32

Getter for singleton instance of a logical type representing NativeType::Int32.

logical_int64

Getter for singleton instance of a logical type representing NativeType::Int64.

logical_interval_mdn

Getter for singleton instance of a logical type representing NativeType::Interval of unit MonthDayNano.`

logical_interval_year_month

Getter for singleton instance of a logical type representing NativeType::Interval of unit YearMonth.`

logical_null

Getter for singleton instance of a logical type representing NativeType::Null.

logical_string

Getter for singleton instance of a logical type representing NativeType::String.

logical_uint8

Getter for singleton instance of a logical type representing NativeType::UInt8.

logical_uint16

Getter for singleton instance of a logical type representing NativeType::UInt16.

logical_uint32

Getter for singleton instance of a logical type representing NativeType::UInt32.

logical_uint64

Getter for singleton instance of a logical type representing NativeType::UInt64.

Type Aliases

DFExtensionTypeRef

A cheaply cloneable pointer to a DFExtensionType.

LogicalFieldRef

A reference counted LogicalField.

LogicalTypeRef

A reference counted LogicalType.