The TermsComponent SearchComponent is a simple component that provides access to the indexed terms in a field and the number of documents that match each term. This can be useful for doing auto-suggest or other things that operate at the term level instead of the search or document level. Retrieving terms in index order is very fast since the implementation directly uses Lucene's TermEnum to iterate over the term dictionary. In a sense, this component provides fast field faceting over the whole index (not restricted by the base query or any filters).
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