iceberg::Reader Class Reference

Base reader class to read data from different file formats. More...

#include <file_reader.h>

Inheritance diagram for iceberg::Reader:

Public Member Functions
	Reader (const Reader &)=delete
Reader &	operator= (const Reader &)=delete
virtual Status	Open (const ReaderOptions &options)=0
	Open the reader.
virtual Status	Close ()=0
	Close the reader.
virtual Result< std::optional< ArrowArray > >	Next ()=0
	Read next data from file.
virtual Result< ArrowSchema >	Schema ()=0
	Get the schema of the data.
virtual Result< std::unordered_map< std::string, std::string > >	Metadata ()=0
	Get the metadata of the file.

Detailed Description

Base reader class to read data from different file formats.

Member Function Documentation

Close()

virtual Status iceberg::Reader::Close ( )

pure virtual

Close the reader.

Implemented in iceberg::avro::AvroReader, and iceberg::parquet::ParquetReader.

Metadata()

virtual Result< std::unordered_map< std::string, std::string > > iceberg::Reader::Metadata ( )

pure virtual

Get the metadata of the file.

Implemented in iceberg::avro::AvroReader, and iceberg::parquet::ParquetReader.

Next()

virtual Result< std::optional< ArrowArray > > iceberg::Reader::Next ( )

pure virtual

Read next data from file.

Returns

std::nullopt if the reader has no more data, otherwise ArrowArray.

Implemented in iceberg::avro::AvroReader, and iceberg::parquet::ParquetReader.

Open()

virtual Status iceberg::Reader::Open ( const ReaderOptions &  options )

pure virtual

Open the reader.

Implemented in iceberg::avro::AvroReader, and iceberg::parquet::ParquetReader.

Schema()

virtual Result< ArrowSchema > iceberg::Reader::Schema ( )

pure virtual

Get the schema of the data.

Implemented in iceberg::avro::AvroReader, and iceberg::parquet::ParquetReader.

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The documentation for this class was generated from the following file:

• iceberg/file_reader.h