Solr documents are used to represent general data in a reasonably simple format made up of lists, integers, logicals, longs, doubles, dates, etc. each with an optional name. These correspond very naturally to R objects.
the object containing the data. This can be the name of a file, a parsed XML document or an XML node.
additional parameters for the methods.
An R object representing the data in the Solr document, typically a named vector or named list.
Duncan Temple Lang
Lucene text search system.