[−][src]Module parquet::decoding

Contains all supported decoders for Parquet.

Structs

DeltaBitPackDecoder	Delta binary packed decoder. Supports INT32 and INT64 types. See `DeltaBitPackEncoder` for more information.
DeltaByteArrayDecoder	Delta byte array decoder. Prefix lengths are encoded using `DELTA_BINARY_PACKED` encoding, Suffixes are stored using `DELTA_LENGTH_BYTE_ARRAY` encoding. See `DeltaByteArrayEncoder` for more information.
DeltaLengthByteArrayDecoder	Delta length byte array decoder. Only applied to byte arrays to separate the length values and the data, the lengths are encoded using DELTA_BINARY_PACKED encoding. See `DeltaLengthByteArrayEncoder` for more information.
DictDecoder	Dictionary decoder. The dictionary encoding builds a dictionary of values encountered in a given column. The dictionary is be stored in a dictionary page per column chunk. See `DictEncoder` for more information.
PlainDecoder	Plain decoding that supports all types. Values are encoded back to back. For native types, data is encoded as little endian. Floating point types are encoded in IEEE. See `PlainDecoder` for more information.
RleValueDecoder	RLE/Bit-Packing hybrid decoding for values. Currently is used only for data pages v2 and supports boolean types. See `RleValueEncoder` for more information.

A Parquet decoder for the data type T.

Gets a decoder for the column descriptor descr and encoding type encoding.