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“ Web Application Maker”: the next 11 years Miguel Calejo Declarativa, Portugal 28-Apr-2011 Copyright Declarativa 1.

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Presentation on theme: "“ Web Application Maker”: the next 11 years Miguel Calejo Declarativa, Portugal 28-Apr-2011 Copyright Declarativa 1."— Presentation transcript:

1 “ Web Application Maker”: the next 11 years Miguel Calejo Declarativa, Portugal http://www.declarativa.com 28-Apr-2011 Copyright Declarativa 1

2 http://www.declarativa.com 28-Apr-2011 Copyright Declarativa 2 Agenda for today Web apps: a different perspective on DRY Web Application Maker –Architecture –The database is (almost) the app –Meta-model editing with WAMAdmin –What can WAM do for me? –Beyond models, into custom coding Conclusion, and an announcement

3 http://www.declarativa.com July 2010 Copyright Declarativa 3 Declarativa: apps... and tools For SQL developers: –Web Application Maker –RegionDoc For Prolog developers –InterProlog Desktop Mobile

4 http://www.declarativa.com 4 WAM in the real world > 40 web IS since 2000: CCDR-N CVRVV DoD/DLA (USA) Environment Agency Ministry of Economy RentingPoint Servisoft XSB, Inc. (USA)

5 http://www.declarativa.com 28-Apr-2011 Copyright Declarativa 5 Agenda for today Web apps: a different perspective on DRY Web Application Maker –Architecture –The database is (almost) the app –Meta-model editing with WAMAdmin –What can WAM do for me? –Beyond models, into custom coding Conclusion, and an announcement

6 http://www.declarativa.com 28-Apr-2011 Copyright Declarativa 6 Web software development Web application - a definition: –Software providing server responses to a set of HTTP URL requests from user browsers At least 3 software execution layers: –DB Transact-SQL, PL-SQL,... –Web (HTTP) server JavaScript, VBScript, PHP, Java, Ruby, Python... –Browser web HTML, JavaScript, Flash, Java, … DRY –Don’t Repeat Yourself…?

7 http://www.declarativa.com 7/9 Where is the essence of your app? SQL Java, VB, C#, Perl, Ruby......and what can this mean for your development? Declarative knowledge Redundancy hard to change Yet another model

8 http://www.declarativa.com 8/9 Boost your SQL layer! SQL Database changes not a problem Zero lines of code, customizable in JavaScript Project center is now here WAM Multiple user profiles

9 http://www.declarativa.com 28-Apr-2011 Copyright Declarativa 9 The WAM picture

10 http://www.declarativa.com 28-Apr-2011 Copyright Declarativa 10 Agenda for today Web apps: a different perspective on DRY Web Application Maker –Architecture –The database is (almost) the app –Meta-model editing with WAMAdmin –What can WAM do for me? –Beyond models, into custom coding Conclusion, and an announcement

11 http://www.declarativa.com 28-Apr-2011 Copyright Declarativa 11 Visiting the WAM showroom Two databases available for experimentation over the web –Northwind: food stores example –pubs: books and publishers example Developing a simple front-end application for the Northwind database, over three versions: –Northwind (we do nothing – single click and WAM makes it) –Northwind_B (no code, just WAMmodel editing) –Northwind_C (SQL user types plus some Javascript)

12 http://www.declarativa.com 28-Apr-2011 Copyright Declarativa 12 “Northwind” database

13 http://www.declarativa.com 28-Apr-2011 Copyright Declarativa 13 Single click: "vanilla" WAM app

14 http://www.declarativa.com 28-Apr-2011 Copyright Declarativa 14 Northwind_B, an hour later

15 http://www.declarativa.com 28-Apr-2011 Copyright Declarativa 15 About the WAMmodel Northwind->Northwind_B: no code –just WAMmodel editing (can be done over the web) The WAMmodel is information added to the database to specify a reasonable GUI: –WAM_PRESENTATION –WAM_LIST, WAM_LIST_COLUMN –WAM_LOOKUP_COLUMN –WAM_PROCEDURE_CALL –...a few more SQL tables Strongly tied to the relational meta-model, but non-redundant (DRY!)

16 http://www.declarativa.com 28-Apr-2011 Copyright Declarativa 16 Editing the WAMmodel With SQL client tools and scripts, or... WAMAdmin –A WAM utility available in all user apps –Standard lists and rows for all WAMmodel tables –Some utilities WAMmodel/DB consistency checking, DB dependency extractor, Documenter, etc. –Complemented by runtime “edition mode”, adequate for administrators/power users –Can be tried on examples at http://showroom.declarativa.com

17 http://www.declarativa.com 28-Apr-2011 Copyright Declarativa 17 Editing the WAMmodel

18 http://www.declarativa.com 28-Apr-2011 Copyright Declarativa 18 Editing a WAMmodel tuple

19 http://www.declarativa.com 28-Apr-2011 Copyright Declarativa 19 Agenda for today Web apps: a different perspective on DRY Web Application Maker –Architecture –The database is (almost) the app –Meta-model editing with WAMAdmin –What can WAM do for me? –Beyond models, into custom coding Conclusion, and an announcement

20 http://www.declarativa.com 28-Apr-2011 Copyright Declarativa 20 Automated web fragment factory for... Application entry pages (Regular) Lists, List columns Detail lists –Stand-alone –Embbeded (in master rows) Search (SQL) Criteria Rows, Row fields, Smart Lookup fields Context path, procedure callers, error reporting Links to external applications or functionality

21 http://www.declarativa.com 28-Apr-2011 Copyright Declarativa 21 Fragment example: lookups

22 http://www.declarativa.com 28-Apr-2011 Copyright Declarativa 22 Entry pages A default entry page, with all lists plus direct navigation to “ interesting ” tables Uses WAM_TABLE_GROUP

23 http://www.declarativa.com 28-Apr-2011 Copyright Declarativa 23 A user-configurable list Automatic joins, both detail  master and master  detail Uses and maintains WAM_LIST, WAM_LIST_COLUMN, WAM_CRITERION

24 http://www.declarativa.com 28-Apr-2011 Copyright Declarativa 24 Row with list and 3 LKs

25 http://www.declarativa.com 28-Apr-2011 Copyright Declarativa 25 Relational navigation...DRY!

26 http://www.declarativa.com 28-Apr-2011 Copyright Declarativa 26 Agenda for today Web apps: a different perspective on DRY Web Application Maker –Architecture –The database is (almost) the app –Meta-model editing with WAMAdmin –What can WAM do for me? –Beyond models, into custom coding Conclusion, and an announcement

27 http://www.declarativa.com 28-Apr-2011 Copyright Declarativa 27 WAM interface "equations" Web interface URLs = WAM(DB Meta Information + WAMmodel) + Custom ASP pages using WAM objects + other pages Default web interface = WAM(DB Meta Inf. + Default WAMmodel)

28 http://www.declarativa.com August 2007 Copyright Declarativa 28 Development with WAM

29 http://www.declarativa.com 28-Apr-2011 Copyright Declarativa 29 Customized ASPs:WAM API Single DB dependence. Custom ASP “ unbreakable ” with DB changes

30 http://www.declarativa.com 28-Apr-2011 Copyright Declarativa 30 two SQL types and one ASP change later...: Northwind_C

31 http://www.declarativa.com 28-Apr-2011 Copyright Declarativa 31 Conclusion… www.declarativa.pt/wam –Online showroom –wamsupport@declarativa.ptwamsupport@declarativa.pt What's needed –DB layer SQL Server 2005/2008 or later –Web server layer: Windows Pro or Server IIS 6.0 or later running –Browser layer: IE, Firefox, Safari, …

32 http://www.declarativa.com...and the next 11 years... WAM will be OPEN SOURCE on May, 30! –Declarative Javascript framework refined over 11 years, +40 real world apps –DRY system; unique use of FK paths –SQL Server; Oracle and others possible Development services community –Declarativa, Centro de Computação Gráfica, XSB Inc., U.Minho students,... Consider using and contributing to it Suggestions welcome, mc@declarativa.pt 28-Apr-2011 Copyright Declarativa 32

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