org.apache.lucene.analysis.core
Class LowerCaseFilter

java.lang.Object
  extended by org.apache.lucene.util.AttributeSource
      extended by org.apache.lucene.analysis.TokenStream
          extended by org.apache.lucene.analysis.TokenFilter
              extended by org.apache.lucene.analysis.core.LowerCaseFilter
All Implemented Interfaces:
Closeable

public final class LowerCaseFilter
extends TokenFilter

Normalizes token text to lower case.

You must specify the required Version compatibility when creating LowerCaseFilter:


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
LowerCaseFilter(Version matchVersion, TokenStream in)
          Create a new LowerCaseFilter, that normalizes token text to lower 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
 
Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

LowerCaseFilter

public LowerCaseFilter(Version matchVersion,
                       TokenStream in)
Create a new LowerCaseFilter, that normalizes token text to lower 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


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