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

Long

NO_OUTPUT

Constructor Summary

TokenInfoFST(FST<Long> fst, boolean fasterButMoreRam)

Method Summary

FST.Arc<Long>	findTargetArc(int ch, FST.Arc<Long> follow, FST.Arc<Long> arc, boolean useCache, FST.BytesReader fstReader)
FST.BytesReader	getBytesReader(int pos)
FST.Arc<Long>	getFirstArc(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(FST<Long> fst,
                    boolean fasterButMoreRam)
             throws IOException

Throws:

IOException

Method Detail

findTargetArc

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

Throws:

IOException

getFirstArc

public FST.Arc<Long> getFirstArc(FST.Arc<Long> arc)

getBytesReader

public FST.BytesReader getBytesReader(int pos)