Add  Columns
===========

This node allows adding new columns with certain values

Input
--------------
This type of node takes in a DataFrame and transforms it to another DataFrame

Output
--------------
This node adds the user specified columns to the DataFrame

Type
--------- 

transform

Class
--------- 

fire.nodes.etl.NodeAddColumns

Fields
--------- 

.. list-table::
      :widths: 10 5 10
      :header-rows: 1

      * - Name
        - Title
        - Description
      * - addCurrentDateCol
        - Add Current Date Column
        - Whether to add the current date as a new column
      * - currentDateColName
        - Current Date Column Name
        - Name of the new Current Date Column Created
      * - addCurrentTimeCol
        - Add Current Time Column
        - Whether to add the current time as a new column
      * - currentTimeColName
        - Current Time Column Name
        - Name of the new Current Time Column Created
      * - addConstantStringCol1
        - Add Constant String Column
        - Whether to add a new columns with constant string value
      * - constantStringColName1
        - Constant String Column Name
        - Constant String Name
      * - constantStringColValue1
        - Constant String Column Value
        - Constant String Value
      * - addConstantIntCol1
        - Add Constant Integer Column
        - Whether to add a new columns with constant integer value
      * - constantIntColName1
        - Constant Integer Column Name
        - Constant Integer Column Name
      * - constantIntColValue1
        - Constant Integer Column Value
        - Constant Integer Value
      * - addConstantDoubleCol1
        - Add Constant Double Column
        - Whether to add a new columns with constant double value
      * - constantDoubleColName1
        - Constant Double Column Name
        - Constant Double Column Name
      * - constantDoubleColValue1
        - Constant Double Column Value
        - Constant Double Value


Details
-------
It creates a new DataFrame by adding new columns to the input Dataframe. 


New columns can be created for Current Date value, Current Datetime value, a Constant String value or a Constant Integer value.


Names for new columns along with values can be provided.


Examples
-------
If option for adding new columns is selected as below with new column names specified in bracket



* CURRENT DATE (Column Name CURRENT_DATE)
* CURRENT TIME (Column Name CURRENT_TIME)
* STRING Column with a value DrillMachine (Column Name MACHINE_NAME)
* INTEGER column with a value 100 (Column Name MACHINE_WEIGHT)


then following columns would be added to the output Dataframe with mentioned values:



* CURRENT_DATE : 2021-10-22
* CURRENT_TIME : 2021-10-22 04:34:00.532
* MACHINE_NAME : DrillMachine
* MACHINE_WEIGHT : 100