Class GroupOperation<T>

    • Constructor Detail

      • GroupOperation

        public GroupOperation​(MongoNamespace namespace,
                              BsonJavaScript reduceFunction,
                              BsonDocument initial,
                              Decoder<T> decoder)
        Deprecated. 
        Create an operation that will perform a Group on a given collection.
        Parameters:
        namespace - the database and collection namespace for the operation.
        reduceFunction - The aggregation function that operates on the documents during the grouping operation.
        initial - The initial the aggregation result document.
        decoder - the decoder for the result documents.
        MongoDB documentation
        Group Command
    • Method Detail

      • getNamespace

        public MongoNamespace getNamespace​()
        Deprecated. 
        Gets the namespace.
        Returns:
        the namespace
        Since:
        3.4
      • getDecoder

        public Decoder<T> getDecoder​()
        Deprecated. 
        Gets the decoder used to decode the result documents.
        Returns:
        the decoder
        Since:
        3.4
      • getKey

        public BsonDocument getKey​()
        Deprecated. 
        Gets the document containing the field or fields to group.
        Returns:
        the document containing the field or fields to group.
      • key

        public GroupOperation<T> key​(BsonDocument key)
        Deprecated. 
        Sets the document containing the field or fields to group.
        Parameters:
        key - the document containing the field or fields to group.
        Returns:
        this
      • getKeyFunction

        public BsonJavaScript getKeyFunction​()
        Deprecated. 
        Gets the function that creates a "key object" for use as the grouping key.
        Returns:
        the function that creates a "key object" for use as the grouping key.
      • keyFunction

        public GroupOperation<T> keyFunction​(BsonJavaScript keyFunction)
        Deprecated. 
        Sets the function that creates a "key object" for use as the grouping key.
        Parameters:
        keyFunction - the function that creates a "key object" for use as the grouping key.
        Returns:
        this
      • getInitial

        public BsonDocument getInitial​()
        Deprecated. 
        Gets the initial the aggregation result document.
        Returns:
        the initial the aggregation result document.
      • getReduceFunction

        public BsonJavaScript getReduceFunction​()
        Deprecated. 
        Gets the aggregation function that operates on the documents during the grouping operation.
        Returns:
        the aggregation function that operates on the documents during the grouping operation.
      • getFilter

        public BsonDocument getFilter​()
        Deprecated. 
        Gets the query filter to determine which documents in the collection to process.
        Returns:
        the query filter to determine which documents in the collection to process.
      • filter

        public GroupOperation<T> filter​(BsonDocument filter)
        Deprecated. 
        Sets the optional query filter to determine which documents in the collection to process.
        Parameters:
        filter - the query filter to determine which documents in the collection to process.
        Returns:
        this
      • getFinalizeFunction

        public BsonJavaScript getFinalizeFunction​()
        Deprecated. 
        Gets the function that runs each item in the result before returning the final value.
        Returns:
        the function that runs each item in the result set before returning the final value.
      • finalizeFunction

        public GroupOperation<T> finalizeFunction​(BsonJavaScript finalizeFunction)
        Deprecated. 
        Sets the function that runs each item in the result set before returning the final value.
        Parameters:
        finalizeFunction - the function that runs each item in the result set before returning the final value.
        Returns:
        this
      • getCollation

        public Collation getCollation​()
        Deprecated. 
        Returns the collation options
        Returns:
        the collation options
        Since:
        3.4
        Since server release
        3.4
      • collation

        public GroupOperation<T> collation​(Collation collation)
        Deprecated. 
        Sets the collation options

        A null value represents the server default.

        Parameters:
        collation - the collation options to use
        Returns:
        this
        Since:
        3.4
        Since server release
        3.4
      • execute

        public BatchCursor<T> execute​(ReadBinding binding)
        Deprecated. 
        Will return a cursor of Documents containing the results of the group operation.
        Specified by:
        execute in interface ReadOperation<T>
        Parameters:
        binding - the binding
        Returns:
        a MongoCursor of T, the results of the group operation in a form to be iterated over.