UpperCaseFilter (Lucene 9.0.0 common API)

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, AutoCloseable
```
public final class UpperCaseFilter
extends TokenFilter
```
Normalizes token text to UPPER CASE.
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.State
- Field Summary
  - Fields inherited from class org.apache.lucene.analysis.TokenFilter
    input
  - Fields inherited from class org.apache.lucene.analysis.TokenStream
    DEFAULT_TOKEN_ATTRIBUTE_FACTORY
- Constructor Summary
  
  Constructors
  Constructor Description
  
  UpperCaseFilter(TokenStream in)
  Create a new UpperCaseFilter, that normalizes token text to upper case.
- Method Summary
  
  All Methods Instance Methods Concrete Methods
  Modifier and Type Method 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
    clone, finalize, getClass, notify, notifyAll, wait, wait, wait

- Constructor Detail
  - UpperCaseFilter
```
public UpperCaseFilter(TokenStream in)
```
    Create a new UpperCaseFilter, that normalizes token text to upper case.
    
    Parameters:
    
    in - TokenStream to filter
- Method Detail
  - incrementToken
```
public final boolean incrementToken()
                             throws IOException
```
    Specified by:
    
    incrementToken in class TokenStream
    
    Throws:
    
    IOException