Module read

APIs to read from Parquet format.

Re-exports

• pub use schema::infer_schema;
• pub use schema::FileMetadata;
• pub use crate::parquet::error::ParquetError;
• pub use crate::parquet::metadata::ColumnChunkMetadata;
• pub use crate::parquet::metadata::ColumnDescriptor;
• pub use crate::parquet::metadata::RowGroupMetadata;
• pub use crate::parquet::page::CompressedDataPage;
• pub use crate::parquet::page::DataPageHeader;
• pub use crate::parquet::page::Page;
• pub use crate::parquet::read::decompress;
• pub use crate::parquet::read::get_column_iterator;
• pub use crate::parquet::read::read_metadata as _read_metadata;
• pub use crate::parquet::read::BasicDecompressor;
• pub use crate::parquet::read::MutStreamingIterator;
• pub use crate::parquet::read::PageReader;
• pub use crate::parquet::read::ReadColumnIterator;
• pub use crate::parquet::read::State;
• pub use crate::parquet::schema::types::GroupLogicalType;
• pub use crate::parquet::schema::types::ParquetType;
• pub use crate::parquet::schema::types::PhysicalType;
• pub use crate::parquet::schema::types::PrimitiveConvertedType;
• pub use crate::parquet::schema::types::PrimitiveLogicalType;
• pub use crate::parquet::schema::types::TimeUnit as ParquetTimeUnit;
• pub use crate::parquet::types::int96_to_i64_ns;
• pub use crate::parquet::fallible_streaming_iterator;

Modules

• schema
  APIs to handle Parquet <-> Arrow schemas.
• statistics
  APIs exposing crate::parquet’s statistics as arrow’s statistics.

Structs

• NestedState
  The state of nested data types.

Enums

• Filter
• InitNested
  The initial info of nested data types. The bool indicates if the type is nullable.

Traits

• FallibleStreamingIterator
  A fallible, streaming iterator.

Functions

• column_iter_to_arrays
  An iterator adapter that maps multiple iterators of [PagesIter] into an iterator of Arrays.
• create_list
  Creates a new ListArray or FixedSizeListArray.
• create_map
  Creates a new MapArray.
• get_field_pages
  Returns all ColumnChunkMetadata associated to field_name. For non-nested parquet types, this returns a single column
• get_page_iterator
  Creates a new iterator of compressed pages.
• init_nested
  Initialize NestedState from &[InitNested].
• n_columns
  Returns the number of (parquet) columns that a ArrowDataType contains.
• read_metadata
  Reads parquets’ metadata synchronously.