Package org.terrier.structures

Class LZ4CompressedMetaIndex

java.lang.Object

org.terrier.structures.BaseCompressingMetaIndex

org.terrier.structures.LZ4CompressedMetaIndex

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable, MetaIndex

public class LZ4CompressedMetaIndex
extends BaseCompressingMetaIndex

MetaIndex implementation for when records are compressed using LZ4

Since:

5.5

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	LZ4CompressedMetaIndex.InputStream

Field Summary

Fields inherited from class org.terrier.structures.BaseCompressingMetaIndex

dataSource, key2bytelength, key2byteoffset, key2reverseOffset, keyCount, keyFactories, keyNames, numDocs, offsetLookup, path, pointerCache, prefix, recordLength, reverseMetaMaps, valueByteLengths, valueByteOffsets, valuesSorted

Constructor Summary

Constructors

Constructor	Description
LZ4CompressedMetaIndex(IndexOnDisk index, java.lang.String structureName)

Method Summary

Modifier and Type	Method	Description
protected byte[]	decode(byte[] input)

Methods inherited from class org.terrier.structures.BaseCompressingMetaIndex

_binarySearch, close, getAllItems, getDocument, getItem, getItems, getItems, getItems, getKeys, getReverseKeys, loadIndex, main, size

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

LZ4CompressedMetaIndex

public LZ4CompressedMetaIndex(IndexOnDisk index,
                              java.lang.String structureName)
                       throws java.io.IOException

Throws:

java.io.IOException

Method Detail

decode

protected byte[] decode(byte[] input)
                 throws java.io.IOException

Specified by:

decode in class BaseCompressingMetaIndex

Throws:

java.io.IOException