class Mongo::Operation::Explain::Command
A MongoDB explain command operation sent as a command message.
@api private
@since 2.0.0
Private Instance Methods
message(connection)
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# File lib/mongo/operation/explain/command.rb, line 52 def message(connection) Protocol::Query.new(db_name, Database::COMMAND, command(connection), options(connection)) end
selector(connection)
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# File lib/mongo/operation/explain/command.rb, line 36 def selector(connection) # The mappings are BSON::Documents and as such store keys as # strings, the spec here has symbol keys. spec = BSON::Document.new(self.spec) if spec[:collation] && !connection.features.collation_enabled? raise Error::UnsupportedCollation end { explain: { find: coll_name, }.update(Find::Builder::Command.selector(spec, connection)), }.update(spec[:explain] || {}) end