LZ4.HashTable

java.lang.Object
- org.apache.lucene.util.compress.LZ4.HashTable

Direct Known Subclasses:

LZ4.FastCompressionHashTable, LZ4.HighCompressionHashTable

Enclosing class:

LZ4
```
abstract static class LZ4.HashTable
extends java.lang.Object
```
A record of previous occurrences of sequences of 4 bytes.

Constructor Summary

Constructors
Constructor Description

HashTable()

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`(package private) abstract boolean`	`assertReset()`
`(package private) abstract int`	`get(int off)`	Advance the cursor to and return an index that stored the same 4 bytes as `b[o:o+4)`.
`(package private) abstract void`	`initDictionary(int dictLen)`	Init `dictLen` bytes to be used as a dictionary.
`(package private) abstract int`	`previous(int off)`	Return an index that less than `off` and stores the same 4 bytes.
`(package private) abstract void`	`reset(byte[] b, int off, int len)`	Reset this hash table in order to compress the given content.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - HashTable
```
HashTable()
```
- Method Detail
  - reset
```
abstract void reset(byte[] b,
                    int off,
                    int len)
```
    Reset this hash table in order to compress the given content.
  - initDictionary
```
abstract void initDictionary(int dictLen)
```
    Init dictLen bytes to be used as a dictionary.
  - get
```
abstract int get(int off)
```
    Advance the cursor to and return an index that stored the same 4 bytes as b[o:o+4). This may only be called on strictly increasing sequences of offsets. A return value of -1 indicates that no other index could be found.
  - previous
```
abstract int previous(int off)
```
    Return an index that less than off and stores the same 4 bytes. Unlike get(int), it doesn't need to be called on increasing offsets. A return value of -1 indicates that no other index could be found.
  - assertReset
```
abstract boolean assertReset()
```