README.md

GDVF - Query Handler

This module is primarily for BFF (Backend For Frontend). This module is working as a bridge between Query processing engine and Frontend. It also publish result to the query history dispatcher module so that users can see other people's query at run time.

Development Strategy

flask-restful is used to build the api end points. As a data source Postgres is used as it is free.

This project needs on the following dependencies,

• Falsk
• Flask-RESTful
• psycopg2
• Flask-CORS

Api end-points

Api end point is stated below ,

• Url: http://169.45.107.190:5000/queryhandler/ ( Example endpoint; Deployed in Koding VM )
• Method: POST
• Example:

    tareqsust@tareq:query-handler$ curl -i -H "Content-Type: application/json" -X POST -d '{"text":"tour cost employee"}' http://169.45.107.190:5000/queryhandler/
    Content-Type: application/json
    Content-Length: 109708
    Server: Werkzeug/0.11.4 Python/2.7.6
    Date: Mon, 22 Feb 2016 06:19:01 GMT
    {
        "data": [
            {
                "age": 71,
                "costperperson": 6900.0,
            },
            ..........
        ]
    }

Here is an sample of the Ajax request,

    $.ajax({
        type: "POST",
        url: "http://169.45.107.190:5000/queryhandler/",
        contentType: "application/json",
        data: JSON.stringify({"text":"tour cost employee"}),
        dataType: "json",
        success: function(responseData) {
            console.log(responseData);
        },
        error: function(err) {
            console.log(err);
        }
    });