Package org.apache.lucene.analysis.snowball

Class SnowballPorterFilterFactory

java.lang.Object

org.apache.lucene.analysis.util.AbstractAnalysisFactory

org.apache.lucene.analysis.util.TokenFilterFactory

org.apache.lucene.analysis.snowball.SnowballPorterFilterFactory

All Implemented Interfaces:

ResourceLoaderAware

public class SnowballPorterFilterFactory
extends TokenFilterFactory
implements ResourceLoaderAware

Factory for SnowballFilter, with configurable language

Note: Use of the "Lovins" stemmer is not recommended, as it is implemented with reflection.

 <fieldType name="text_snowballstem" class="solr.TextField" positionIncrementGap="100">
   <analyzer>
     <tokenizer class="solr.StandardTokenizerFactory"/>
     <filter class="solr.LowerCaseFilterFactory"/>
     <filter class="solr.SnowballPorterFilterFactory" protected="protectedkeyword.txt" language="English"/>
   </analyzer>
 </fieldType>

Field Summary

Fields

Modifier and Type	Field	Description
static final String	PROTECTED_TOKENS

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

LUCENE_MATCH_VERSION_PARAM

Constructor Summary

Constructors

Constructor	Description
SnowballPorterFilterFactory(Map<String,String> args)	Creates a new SnowballPorterFilterFactory

Method Summary

Modifier and Type	Method	Description
TokenFilter	create(TokenStream input)	Transform the specified input TokenStream
void	inform(ResourceLoader loader)	Initializes this component with the provided ResourceLoader (used for loading classes, files, etc).

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

availableTokenFilters, forName, lookupClass, reloadTokenFilters

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

get, get, get, get, get, getChar, getClassArg, getLuceneMatchVersion, getOriginalArgs, getSet, isExplicitLuceneMatchVersion, require, require, require, requireChar, setExplicitLuceneMatchVersion

Methods inherited from class java.lang.Object

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

Field Details

PROTECTED_TOKENS

public static final String PROTECTED_TOKENS

See Also:

• Constant Field Values

Constructor Details

SnowballPorterFilterFactory

public SnowballPorterFilterFactory(Map<String,String> args)

Creates a new SnowballPorterFilterFactory

Method Details

inform

public void inform(ResourceLoader loader)
            throws IOException

Description copied from interface: ResourceLoaderAware

Initializes this component with the provided ResourceLoader (used for loading classes, files, etc).

Specified by:

inform in interface ResourceLoaderAware

Throws:

IOException

create

public TokenFilter create(TokenStream input)

Description copied from class: TokenFilterFactory

Transform the specified input TokenStream

Specified by:

create in class TokenFilterFactory