org.apache.lucene.analysis.core
Class UpperCaseFilter

java.lang.Object
  org.apache.lucene.util.AttributeSource
      org.apache.lucene.analysis.TokenStream
          org.apache.lucene.analysis.TokenFilter
              org.apache.lucene.analysis.core.UpperCaseFilter

All Implemented Interfaces:

Closeable

public final class UpperCaseFilter
extends TokenFilter

Normalizes token text to UPPER CASE.

You must specify the required Version compatibility when creating UpperCaseFilter

NOTE: In Unicode, this transformation may lose information when the upper case character represents more than one lower case character. Use this filter when you require uppercase tokens. Use the LowerCaseFilter for general search matching

Nested Class Summary

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

AttributeSource.AttributeFactory, AttributeSource.State

Field Summary

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

input

Constructor Summary

UpperCaseFilter(Version matchVersion, TokenStream in)
Create a new UpperCaseFilter, that normalizes token text to upper case.

Method Summary

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, equals, getAttribute, getAttributeClassesIterator, getAttributeFactory, getAttributeImplsIterator, hasAttribute, hasAttributes, hashCode, reflectAsString, reflectWith, restoreState, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

UpperCaseFilter

public UpperCaseFilter(Version matchVersion,
                       TokenStream in)

Create a new UpperCaseFilter, that normalizes token text to upper case.

Parameters:

matchVersion - See above

in - TokenStream to filter

Method Detail

incrementToken

public final boolean incrementToken()
                             throws IOException

Specified by:

incrementToken in class TokenStream

Throws:

IOException