Namespace Lucene.Net.Codecs.Compressing

StoredFieldsFormat that allows cross-document and cross-field compression of stored fields.

Classes

CompressingStoredFieldsFormat

A StoredFieldsFormat that is very similar to Lucene40StoredFieldsFormat but compresses documents in chunks in order to improve the compression ratio.

For a chunk size of chunkSize bytes, this StoredFieldsFormat does not support documents larger than (231 - chunkSize) bytes. In case this is a problem, you should use another format, such as Lucene40StoredFieldsFormat.

For optimal performance, you should use a MergePolicy that returns segments that have the biggest byte size first.

Note

This API is experimental and might change in incompatible ways in the next release.

CompressingStoredFieldsIndexReader

Random-access reader for CompressingStoredFieldsIndexWriter.

Note

This API is for internal purposes only and might change in incompatible ways in the next release.

CompressingStoredFieldsIndexWriter

Efficient index format for block-based Codecs.

this writer generates a file which can be loaded into memory using memory-efficient data structures to quickly locate the block that contains any document.

In order to have a compact in-memory representation, for every block of 1024 chunks, this index computes the average number of bytes per chunk and for every chunk, only stores the difference between

    Data is written as follows:

      Notes

        Note

        This API is for internal purposes only and might change in incompatible ways in the next release.

        CompressingStoredFieldsReader

        StoredFieldsReader impl for CompressingStoredFieldsFormat.

        Note

        This API is experimental and might change in incompatible ways in the next release.

        CompressingStoredFieldsWriter

        StoredFieldsWriter impl for CompressingStoredFieldsFormat.

        Note

        This API is experimental and might change in incompatible ways in the next release.

        CompressingTermVectorsFormat

        A TermVectorsFormat that compresses chunks of documents together in order to improve the compression ratio.

        Note

        This API is experimental and might change in incompatible ways in the next release.

        CompressingTermVectorsReader

        TermVectorsReader for CompressingTermVectorsFormat.

        Note

        This API is experimental and might change in incompatible ways in the next release.

        CompressingTermVectorsWriter

        TermVectorsWriter for CompressingTermVectorsFormat.

        Note

        This API is experimental and might change in incompatible ways in the next release.

        CompressionMode

        A compression mode. Tells how much effort should be spent on compression and decompression of stored fields.

        Note

        This API is experimental and might change in incompatible ways in the next release.

        Compressor

        A data compressor.

        Decompressor

        A decompressor.

        LZ4

        LZ4 compression and decompression routines.

        http://code.google.com/p/lz4/ http://fastcompression.blogspot.fr/p/lz4.html

        LZ4.HashTable

        LZ4.HCHashTable

        LZ4.Match