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
    Description
    SelectiveFoldingFilter(org.apache.lucene.analysis.TokenStream input, org.apache.lucene.analysis.CharArraySet whitelisted)
     
  • Method Summary

    Modifier and Type
    Method
    Description
    boolean
     

    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 Details

    • SelectiveFoldingFilter

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

    • incrementToken

      public boolean incrementToken() throws IOException
      Specified by:
      incrementToken in class org.apache.lucene.analysis.TokenStream
      Throws:
      IOException