Module polars_arrow::datatypes

Contains all metadata, such as PhysicalType, ArrowDataType, Field and ArrowSchema.

Re-exports

• pub use crate::types::PrimitiveType;

Structs

• ArrowSchema
  An ordered sequence of Fields with associated Metadata.
• Field
  Represents Arrow’s metadata of a “column”.

Enums

• ArrowDataType
  The set of supported logical types in this crate.
• IntegerType
  the set of valid indices types of a dictionary-encoded Array. Each type corresponds to a variant of crate::array::DictionaryArray.
• IntervalUnit
  Interval units defined in Arrow
• PhysicalType
  The set of physical types: unique in-memory representations of an Arrow array. A physical type has a one-to-many relationship with a crate::datatypes::ArrowDataType and a one-to-one mapping to each struct in this crate that implements crate::array::Array.
• TimeUnit
  The time units defined in Arrow.
• UnionMode
  Mode of ArrowDataType::Union

Functions

• get_extension
  support get extension for metadata

Type Aliases

• ArrowSchemaRef
• IdxArr
• Metadata
  typedef for BTreeMap<String, String> denoting Field’s and ArrowSchema’s metadata.
• SchemaRef
  typedef for Arc<ArrowSchema>.