public final class UpperCaseFilter extends TokenFilter
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
AttributeSource.State
input
DEFAULT_TOKEN_ATTRIBUTE_FACTORY
Constructor and Description |
---|
UpperCaseFilter(TokenStream in)
Create a new UpperCaseFilter, that normalizes token text to upper case.
|
Modifier and Type | Method and Description |
---|---|
boolean |
incrementToken() |
close, end, reset
addAttribute, addAttributeImpl, captureState, clearAttributes, cloneAttributes, copyTo, equals, getAttribute, getAttributeClassesIterator, getAttributeFactory, getAttributeImplsIterator, hasAttribute, hasAttributes, hashCode, reflectAsString, reflectWith, restoreState, toString
public UpperCaseFilter(TokenStream in)
in
- TokenStream to filterpublic final boolean incrementToken() throws IOException
incrementToken
in class TokenStream
IOException
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