node-etl :

Extract, Transform and Load (ETL) Data from between homogeneous or heterogeneous data sources.

Install :

npm install node-etl --save;

Extract Process :

Assume , we have data.txt file with the following content :

1 Metouia Gabes TN
2 Laban Riyadh SA
3 Annaba Annaba ALG
9 Mina Mecca SA

1. Simple Extract :

   var ETL = require('node-etl');
   var extracted=ETL.extract("./data.txt",
   {delimitor:" ",headers:["id","town","city","country"]});

Returns an array of objects like below :

 [
    {id:"1",town:"Metouia",city:"Gabes",country:"TN"},
    {id:"2",town:"Laban",city:"Riyadh",country:"SA"},
    ...
 ]

2. Custom Extract :

In the previous example , we have the row like {id:1,town:"A",city:"B",country:C} .

What about if we want an output that:

• joins 2nd and 3rd attributes .
• delete id

The solution is to use the following options :

• cols : [[1,2],3]
• cols_headers: ["town_city","country"]
• cols_join "|"

ETL.extract("./data.txt",{
                    delimitor:" ",
                    headers:["id","town","city","country"],
                    cols:[[1,2],3],
                    cols_headers:["town_city","country"],
                    cols_join:"|"

});

Now, output will be :

 [
    {town_city:"Metouia|Gabes",country:"TN"},
    {town_city:"Laban|Riyadh",country:"SA"},
    ...
 ]

Load Process :

TODO : implemtation & documentation.

Transfer Process :

TODO : implemtation & documentation.

License :

 Copyright (c) 2016 Abdennour TOUMI <http://abdennoor.com>

 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
 in the Software without restriction, including without limitation the rights
 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 copies of the Software, and to permit persons to whom the Software is
 furnished to do so, subject to the following conditions:

 The above copyright notice and this permission notice shall be included in
 all copies or substantial portions of the Software.

 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 THE SOFTWARE.