| Class | Description | 
|---|---|
| ICUCollationAttributeFactory | 
 
   Converts each token into its  
CollationKey, and
   then encodes bytes as an index term. | 
| ICUCollationDocValuesField | 
 Indexes collation keys as a single-valued  
SortedDocValuesField. | 
| ICUCollationKeyAnalyzer | 
 
   Configures  
KeywordTokenizer with ICUCollationAttributeFactory. | 
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