Package org.apache.lucene.analysis.ja.util

Class DictionaryBuilder

java.lang.Object

org.apache.lucene.analysis.ja.util.DictionaryBuilder

public class DictionaryBuilder
extends Object

Tool to build dictionaries. Usage:

    java -cp [lucene classpath] org.apache.lucene.analysis.ja.util.DictionaryBuilder \
          ${inputDir} ${outputDir} ${encoding} ${normalizeEntry}
 

The input directory is expected to include unk.def, matrix.def, plus any number of .csv files, roughly following the conventions of IPADIC. JapaneseTokenizer uses dictionaries built with this tool. Note that the input files required by this build generally must be generated from a corpus of real text using tools that are not part of Lucene.

The normalizeEntry option is a Boolean value.
If true, check a surface form (first column in csv) is NFC Normalized. If it isn't, NFC normalized contents will be added to the TokenInfoDictionary in addition to the original form.
This option is false for pre-built dictionary in the Lucene.

WARNING: This API is experimental and might change in incompatible ways in the next release.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	DictionaryBuilder.DictionaryFormat	Format of the dictionary.

Method Summary

Modifier and Type	Method	Description
static void	build(DictionaryBuilder.DictionaryFormat format, Path inputDir, Path outputDir, String encoding, boolean normalizeEntry)
static void	main(String[] args)

Methods inherited from class java.lang.Object

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

Method Detail

build

public static void build(DictionaryBuilder.DictionaryFormat format,
                         Path inputDir,
                         Path outputDir,
                         String encoding,
                         boolean normalizeEntry)
                  throws IOException

Throws:

IOException

main

public static void main(String[] args)
                 throws IOException

Throws:

IOException