Module datatypes

Contains all metadata, such as PhysicalType, DataType, Field and Schema.

Re-exports

• pub use crate::types::PrimitiveType;

Structs

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

Enums

• DataType
  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::DataType 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 DataType::Union

Traits

• ArcExt
  An extension trait to polyfill Arc::unwrap_or_clone from the nightly stdlib.

Functions

• get_extension
  support get extension for metadata

Type Aliases

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