noradle

A NodeJS and Oracle DB integration, NodeJS act as http gateway for plsql server pages

Want to build solid information system solely on PL/SQL and javascript easily, no rely on any other programming language or technical stack? develop with NORADLE.

![NORADLE](noradle_span_960.png)

What's NORADLE?

The word NORADLE is combination of node.js and oracle, It aims at

  1. write http servlet in PL/SQL with extremely concise code
  2. with node.js as http gateway, give full http protocol support for oracle environment
  3. node.js accessibility to oracle, give node.js ecosystem a real thustworthy db backend

take a first glance at pl/sql servlet code

procedure bind_data is
  cursor c_packages is
    select *
      from user_objects a
     where a.object_type = 'PACKAGE'
       and rownum <= 5
     order by a.object_name asc;
begin
  b.l('<!DOCTYPE html>');
  o.t('<html>');
  o.t('<body>');
  o.t('<table rules=all cellspacing=0 cellpadding=5 style="border:1px solid silver;">');
  o.t(' <caption>', 'bind sql data to table example');
  o.t(' <thead>', o.t('<tr>', m.w('<th>@</th>', 'package name,created')));
  o.t(' <tbody>');
  for i in c_packages loop
    o.t('<tr>');
    o.t(' <td>', i.object_name);
    o.t(' <td>', t.d2s(i.created));
    o.t('</tr>');
  end loop;
  o.t(' </tbody>');
  o.t('</table>');
  o.t('</body>');
  o.t('</html>');
end;
create or replace package body chart_b is
 
procedure common_preface(default_type varchar2) is
v_chart_type varchar2(30) := r.getc('chart_type', default_type);
begin
src_b.header;
o.u('<link rel=stylesheet/>', '[animate.css]');
o.u('<script>', '[chart.js]', '');
o.u('<script>', '[zepto.js]', '');
o.u('<script>', '[underscore.js]', '');
o.t('<canvas#cc width=600 height=400>', '');
o.t('<script>',
t.ps('
var ctx = document.getElementById("cc").getContext("2d")
 , demoChart = new Chart(ctx)
 , chartType=":1"
 ;',
 st(v_chart_type)));
end;
 
procedure salary_min_max_by_job_id is
cur sys_refcursor;
begin
if r.is_xhr then
open cur for
select a.job_id, count(*) cnt, avg(a.salary) avg, min(a.salary) min, max(a.salary) max
from employees a
 group by a.job_id
 order by avg asc;
rs.print(cur);
return;
end if;
common_preface('Bar');
o.t('<div#links>');
o.u(' <a>', r.prog || '?chart_type=Line', 'Line');
o.u(' <a>', r.prog || '?chart_type=Bar', 'Bar');
o.u(' <a>', r.prog || '?chart_type=Radar', 'Rader');
o.t('</div>');
b.l('<script>
$.getJSON(location.pathname+"?data", function(data){
var salaries = data.$DATA.rows;
var chartData = {
labels : _.pluck(salaries, "job_id"),
datasets : [
{
fillColor : "rgba(220,220,220,0.5)",
strokeColor : "rgba(220,220,220,1)",
pointColor : "rgba(220,220,220,1)",
pointStrokeColor : "#fff",
data : _.pluck(salaries, "min")
},
{
fillColor : "rgba(151,187,205,0.5)",
strokeColor : "rgba(151,187,205,1)",
pointColor : "rgba(151,187,205,1)",
pointStrokeColor : "#fff",
data : _.pluck(salaries, "max")
}
]
};
demoChart[chartType](chartData);
});</script>');
end;
  
end chart_b;

What NORADLE provide?

  • NORADLE support full dynamic(data driving) web development(whether for html page service or json data service), but more concise than PHP, J2EE, ...
  • NORADLE NDBC make node ecosystem embracing oracle, expand node's realm to serious enterprise information systems
  • NORADLE call out feature extend oracle PL/SQL to access external service/resource, break restrictions

Core thinking

  • use pl/sql stored procedure to implement application/business logic
    • servlet code that access data should be as close as the data, avoid complexity and develop-time and runtime overhead
    • all SQL should be in PL/SQL stored procedure, no string concat, no network transfer
    • no triditional templating, print html/json with concise API, just use pl/sql, introduce no excessive templating language
    • give all function that a triditional servlet tech can provide, but be more concise and easier to master
    • be aware of that middle layer JAVA/PHP/.NET/PYTHON/RUBY... is superfluous, except adding comlexity
    • enjoy the good of oracle, advanced SQL, availility, stability, performance, scalability, tunable...
  • node.js can access oracle, and vice versa, they can aid each other
    • node.js give oracle a http servlet container environment
    • pl/sql can call out by node.js, extending oracle
    • by node.js, oracle became a full servlet container, integrate code and data seamlessly
    • by connectivity to oracle, node.js ecosysetm will extend to the area of enterprise information system

the resource for NORADLE

document site http://docs.noradle.com

demo site http://demo.noradle.com