org.apache.lucene.analysis.path

Class PathHierarchyTokenizerFactory

java.lang.Object

org.apache.lucene.analysis.util.AbstractAnalysisFactory

org.apache.lucene.analysis.util.TokenizerFactory

org.apache.lucene.analysis.path.PathHierarchyTokenizerFactory

public class PathHierarchyTokenizerFactory
extends TokenizerFactory

Factory for PathHierarchyTokenizer.

This factory is typically configured for use only in the index Analyzer (or only in the query Analyzer, but never both).

For example, in the configuration below a query for Books/NonFic will match documents indexed with values like Books/NonFic, Books/NonFic/Law, Books/NonFic/Science/Physics, etc. But it will not match documents indexed with values like Books, or Books/Fic...

 <fieldType name="descendent_path" class="solr.TextField">
   <analyzer type="index">
     <tokenizer class="solr.PathHierarchyTokenizerFactory" delimiter="/" />
   </analyzer>
   <analyzer type="query">
     <tokenizer class="solr.KeywordTokenizerFactory" />
   </analyzer>
 </fieldType>
 

In this example however we see the oposite configuration, so that a query for Books/NonFic/Science/Physics would match documents containing Books/NonFic, Books/NonFic/Science, or Books/NonFic/Science/Physics, but not Books/NonFic/Science/Physics/Theory or Books/NonFic/Law.

 <fieldType name="descendent_path" class="solr.TextField">
   <analyzer type="index">
     <tokenizer class="solr.KeywordTokenizerFactory" />
   </analyzer>
   <analyzer type="query">
     <tokenizer class="solr.PathHierarchyTokenizerFactory" delimiter="/" />
   </analyzer>
 </fieldType>
 

Field Summary

Fields inherited from class org.apache.lucene.analysis.util.AbstractAnalysisFactory

args, luceneMatchVersion

Constructor Summary

Constructors

Constructor and Description
PathHierarchyTokenizerFactory()

Method Summary

Methods

Modifier and Type	Method and Description
Tokenizer	create(Reader input) Creates a TokenStream of the specified input
void	init(Map<String,String> args) Require a configured pattern

Methods inherited from class org.apache.lucene.analysis.util.TokenizerFactory

availableTokenizers, forName, lookupClass, reloadTokenizers

Methods inherited from class org.apache.lucene.analysis.util.AbstractAnalysisFactory

assureMatchVersion, getArgs, getBoolean, getBoolean, getInt, getInt, getInt, getLines, getLuceneMatchVersion, getOriginalArgs, getPattern, getSnowballWordSet, getWordSet, setLuceneMatchVersion, splitFileNames

Methods inherited from class java.lang.Object

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

Constructor Detail

PathHierarchyTokenizerFactory

public PathHierarchyTokenizerFactory()

Method Detail

init

public void init(Map<String,String> args)

Require a configured pattern

Overrides:

init in class AbstractAnalysisFactory

create

public Tokenizer create(Reader input)

Description copied from class: TokenizerFactory

Creates a TokenStream of the specified input

Specified by:

create in class TokenizerFactory