Atlassian Confluence
| CategoryMapper | Class that maps a lucene document id to a particular Category. |
| CategoryMapperFactory | Interface describing a class responsible for creating a category mapper. |
| ContentTypeCategoryMapper | Class that maps docId's to categories based on their content type. |
| ContentTypeCategoryMapperFactory | A factory implementation that will return CategoryMapper instances which have
an already created cache of content types for the index. |