org.apache.lucene.analysis.ja.dict

Class TokenInfoFST

java.lang.Object

org.apache.lucene.analysis.ja.dict.TokenInfoFST

public final class TokenInfoFST
extends Object

Thin wrapper around an FST with root-arc caching for Japanese.

Depending upon fasterButMoreRam, either just kana (191 arcs), or kana and han (28,607 arcs) are cached. The latter offers additional performance at the cost of more RAM.

Field Summary

Fields

Modifier and Type	Field and Description
Long	NO_OUTPUT

Constructor Summary

Constructors

Constructor and Description
TokenInfoFST(org.apache.lucene.util.fst.FST<Long> fst, boolean fasterButMoreRam)

Method Summary

Methods

Modifier and Type	Method and Description
org.apache.lucene.util.fst.FST.Arc<Long>	findTargetArc(int ch, org.apache.lucene.util.fst.FST.Arc<Long> follow, org.apache.lucene.util.fst.FST.Arc<Long> arc, boolean useCache, org.apache.lucene.util.fst.FST.BytesReader fstReader)
org.apache.lucene.util.fst.FST.BytesReader	getBytesReader(int pos)
org.apache.lucene.util.fst.FST.Arc<Long>	getFirstArc(org.apache.lucene.util.fst.FST.Arc<Long> arc)

Methods inherited from class java.lang.Object

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

Field Detail

NO_OUTPUT

public final Long NO_OUTPUT

Constructor Detail

TokenInfoFST

public TokenInfoFST(org.apache.lucene.util.fst.FST<Long> fst,
            boolean fasterButMoreRam)
             throws IOException

Throws:

IOException

Method Detail

findTargetArc

public org.apache.lucene.util.fst.FST.Arc<Long> findTargetArc(int ch,
                                                     org.apache.lucene.util.fst.FST.Arc<Long> follow,
                                                     org.apache.lucene.util.fst.FST.Arc<Long> arc,
                                                     boolean useCache,
                                                     org.apache.lucene.util.fst.FST.BytesReader fstReader)
                                                       throws IOException

Throws:

IOException

getFirstArc

public org.apache.lucene.util.fst.FST.Arc<Long> getFirstArc(org.apache.lucene.util.fst.FST.Arc<Long> arc)

getBytesReader

public org.apache.lucene.util.fst.FST.BytesReader getBytesReader(int pos)