Module org.apache.lucene.core

Package org.apache.lucene.index

Class PrefixCodedTerms

java.lang.Object

org.apache.lucene.index.PrefixCodedTerms

All Implemented Interfaces:

Accountable

public class PrefixCodedTerms
extends Object
implements Accountable

Prefix codes term instances (prefixes are shared). This is expected to be faster to build than a FST and might also be more compact if there are no common suffixes.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	PrefixCodedTerms.Builder	Builds a PrefixCodedTerms: call add repeatedly, then finish.
static class	PrefixCodedTerms.TermIterator	An iterator over the list of terms stored in a PrefixCodedTerms.

Field Summary

Fields

Modifier and Type	Field	Description
private final List<ByteBuffer>	content
private long	delGen
private int	lazyHash
private final long	size

Fields inherited from interface org.apache.lucene.util.Accountable

NULL_ACCOUNTABLE

Constructor Summary

Constructors

Modifier	Constructor	Description
private	PrefixCodedTerms(List<ByteBuffer> content, long size)

Method Summary

Modifier and Type	Method	Description
boolean	equals(Object obj)
int	hashCode()
PrefixCodedTerms.TermIterator	iterator()	Return an iterator over the terms stored in this PrefixCodedTerms.
long	ramBytesUsed()	Return the memory usage of this object in bytes.
void	setDelGen(long delGen)	Records del gen for this packet.
long	size()	Return the number of terms stored in this PrefixCodedTerms.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.lucene.util.Accountable

getChildResources

Field Details

content

private final List<ByteBuffer> content

size

private final long size

delGen

private long delGen

lazyHash

private int lazyHash

Constructor Details

PrefixCodedTerms

private PrefixCodedTerms(List<ByteBuffer> content,
 long size)

Method Details

ramBytesUsed

public long ramBytesUsed()

Description copied from interface: Accountable

Return the memory usage of this object in bytes. Negative values are illegal.

Specified by:

ramBytesUsed in interface Accountable

setDelGen

public void setDelGen(long delGen)

Records del gen for this packet.

iterator

public PrefixCodedTerms.TermIterator iterator()

Return an iterator over the terms stored in this PrefixCodedTerms.

size

public long size()

Return the number of terms stored in this PrefixCodedTerms.

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object