class Mongo::Operation::Commands::ListCollections::Result
Defines custom behaviour of results when using the listCollections command.
@since 2.0.0
Public Instance Methods
cursor_id()
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Get the cursor id for the result.
@example Get the cursor id.
result.cursor_id
@note Even though the wire protocol has a #cursor_id field for all
messages of type reply, it is always zero when using the listCollections command and must be retrieved from the cursor document itself.
@return [ Integer ] The cursor id.
@since 2.0.0
Calls superclass method
Mongo::Operation::Result#cursor_id
# File lib/mongo/operation/commands/list_collections/result.rb, line 39 def cursor_id cursor_document ? cursor_document[CURSOR_ID] : super end
documents()
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Get the documents for the listCollections result. It is the 'firstBatch'
field in the 'cursor' field of the first document returned.
@example Get the documents.
result.documents
@return [ Array<BSON::Document> ] The documents.
@since 2.0.0
# File lib/mongo/operation/commands/list_collections/result.rb, line 64 def documents cursor_document[FIRST_BATCH] end
namespace()
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Get the namespace for the cursor.
@example Get the namespace.
result.namespace
@return [ String ] The namespace.
@since 2.0.0
Calls superclass method
Mongo::Operation::Result#namespace
# File lib/mongo/operation/commands/list_collections/result.rb, line 51 def namespace cursor_document ? cursor_document[NAMESPACE] : super end
validate!()
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Validate the result. In the case where an unauthorized client tries to run the command we need to generate the proper error.
@example Validate the result.
result.validate!
@return [ Result ] Self if successful.
@since 2.0.0
# File lib/mongo/operation/commands/list_collections/result.rb, line 77 def validate! !successful? ? raise(Error::OperationFailure.new(parser.message)) : self end
Private Instance Methods
cursor_document()
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# File lib/mongo/operation/commands/list_collections/result.rb, line 83 def cursor_document @cursor_document ||= first_document[CURSOR] end
first_document()
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# File lib/mongo/operation/commands/list_collections/result.rb, line 87 def first_document @first_document ||= reply.documents[0] end