org.apache.jena.query.text.filter

Class SelectiveFoldingFilter

java.lang.Object

org.apache.lucene.util.AttributeSource

org.apache.lucene.analysis.TokenStream

org.apache.lucene.analysis.TokenFilter

org.apache.jena.query.text.filter.SelectiveFoldingFilter

All Implemented Interfaces:

Closeable, AutoCloseable

public final class SelectiveFoldingFilter
extends org.apache.lucene.analysis.TokenFilter

A Lucene filter based on ASCIIFoldingFilter, but that allows the caller to provide a white list for selective folding filter. Entries in the white list are ignored during the filtering. This is useful for languages that require certain characters to be ignored.

See Also:

ASCIIFoldingFilter

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.lucene.util.AttributeSource

org.apache.lucene.util.AttributeSource.State

Field Summary

Fields inherited from class org.apache.lucene.analysis.TokenStream

DEFAULT_TOKEN_ATTRIBUTE_FACTORY

Constructor Summary

Constructors

Constructor and Description
SelectiveFoldingFilter(org.apache.lucene.analysis.TokenStream input, org.apache.lucene.analysis.CharArraySet whitelisted)

Method Summary

Modifier and Type	Method and Description
boolean	incrementToken()

Methods inherited from class org.apache.lucene.analysis.TokenFilter

close, end, reset

Methods inherited from class org.apache.lucene.util.AttributeSource

addAttribute, addAttributeImpl, captureState, clearAttributes, cloneAttributes, copyTo, endAttributes, equals, getAttribute, getAttributeClassesIterator, getAttributeFactory, getAttributeImplsIterator, hasAttribute, hasAttributes, hashCode, reflectAsString, reflectWith, removeAllAttributes, restoreState, toString

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

SelectiveFoldingFilter

public SelectiveFoldingFilter(org.apache.lucene.analysis.TokenStream input,
                              org.apache.lucene.analysis.CharArraySet whitelisted)

Method Detail

incrementToken

public boolean incrementToken()
                       throws IOException

Specified by:

incrementToken in class org.apache.lucene.analysis.TokenStream

Throws:

IOException