Module schema

APIs to handle Parquet <-> Arrow schemas.

Re-exports

• pub use crate::parquet::metadata::FileMetadata;
• pub use crate::parquet::metadata::SchemaDescriptor;
• pub use crate::parquet::schema::types::ParquetType;

Structs

• KeyValue
  Wrapper struct to store key values
• SchemaInferenceOptions
  Options when inferring schemas from Parquet

Functions

• infer_schema
  Infers a ArrowSchema from parquet’s FileMetadata.
• infer_schema_with_options
  Like infer_schema but with configurable options which affects the behavior of inference
• parquet_to_arrow_schema
  Converts ParquetTypes to a Field, ignoring parquet fields that do not contain any physical column.
• parquet_to_arrow_schema_with_options
  Like parquet_to_arrow_schema but with configurable options which affect the behavior of schema inference
• read_schema_from_metadata
  Reads an arrow schema from Parquet’s file metadata. Returns None if no schema was found.