Module org.apache.lucene.core
Package org.apache.lucene.util.compress
Compression utilities.
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Class Summary Class Description LowercaseAsciiCompression Utility class that can efficiently compress arrays that mostly contain characters in the [0x1F,0x3F) or [0x5F,0x7F) ranges, which notably include all digits, lowercase characters, '.', '-' and '_'.LZ4 LZ4 compression and decompression routines.LZ4.FastCompressionHashTable Simple lossyLZ4.HashTable
that only stores the last ocurrence for each hash on2^14
bytes of memory.LZ4.HashTable A record of previous occurrences of sequences of 4 bytes.LZ4.HighCompressionHashTable A higher-precisionLZ4.HashTable
.LZ4.Table LZ4.Table16 16 bits per offset.LZ4.Table32 32 bits per value, only used when inputs exceed 64kB, e.g.