Module arrow_reader

Contains reader which reads parquet data into arrow [RecordBatch]

Modules

• filter 🔒
• selection 🔒
• statistics
  StatisticsConverter to convert statistics in parquet format to arrow [ArrayRef].

Structs

• ArrowPredicateFn
  An ArrowPredicate created from an FnMut
• ArrowReaderBuilder
  Builder for constructing parquet readers into arrow.
• ArrowReaderMetadata
  The metadata necessary to construct a ArrowReaderBuilder
• ArrowReaderOptions
  Options that control how metadata is read for a parquet file
• ParquetRecordBatchReader
  An Iterator<Item = ArrowResult<RecordBatch>> that yields [RecordBatch] read from a parquet data source
• ReaderPageIterator 🔒
• ReaderRowGroups 🔒
• RowFilter
  Filter applied during the parquet read process
• RowSelection
  RowSelection allows selecting or skipping a provided number of rows when scanning the parquet file.
• RowSelector
  RowSelection is a collection of RowSelector used to skip rows when scanning a parquet file

Traits

• ArrowPredicate
  A predicate operating on [RecordBatch]
• RowGroups
  A collection of row groups

Functions

• apply_range 🔒
  Applies an optional offset and limit to an optional RowSelection
• evaluate_predicate 🔒
  Evaluates an ArrowPredicate, returning a RowSelection indicating which rows to return.
• selects_any 🔒
  Returns true if selection is None or selects some rows

Type Aliases

• ParquetRecordBatchReaderBuilder
  A synchronous builder used to construct ParquetRecordBatchReader for a file