Expert: represents field values as different types. Normally created via a {@link org.apache.lucene.search.function.ValueSource ValueSuorce} for a particular field and reader.
WARNING: The status of the search.function package is experimental. The APIs introduced here might change in the future and will not be supported anymore in such a case.
@author yonik
Represents field values as different types. Normally created via a {@link ValueSource} for a particular field and reader.
@version $Id: DocValues.java 1140724 2011-06-28 17:00:20Z yonik $
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