CONFIGURATION-ORIENTED PROGRAMMING Introduction into the new paradigm
Radovan Brečka Department of Computer Science, Comenius University, Mlynská dolina, 842 48 Bratislava, Slovakia email:
[email protected]
Content History Illustrative examples COP definition How it works Blox® Framework Advantages References
History of programming Imperative programming Simple computing definition Pseudo codes
Structured & procedural programming Data types, Control structures, Procedures PL/1, C, Pascal, …
Object-oriented programming Object (data + code), Inheritance, Dynamic method binding C++, Java, .NET, …
Configuration-oriented programming Configuration
From OOP to COP OOP Class Data Code
COP Module Data Setup (configuration form definition) Code
OOP Instance
COP Configuration Atributtes Submodules
Inheritance + Dynamic method binding
OOP vs. COP illustrative example OOP
COP
COP definition COP Module Data: constants & module configurations (COP configuration) Setup: definition how this module will be configured Code: imperative code with direct configuration support
COP Configuration Attributes: defined with respect to Setup part of Module Sub-modules: defined with respect to Setup definition
How it works: Example 1 – CMS CMS – Content Management System Modules: Portal, Page, Section, Text, Image
Configuration: Representation of Content
How it works: Example 1 – CMS
Illustrative video 1.
How it works: Example 2 – Form Form layer Modules: Data source, Data type, Data attributes Forms, Form attributes
Configuration: Data table type Form structure
Prerequisites: Created table example with columns: id, name, desc
How it works: Example 2 – Form
Illustrative video 2.
Programming with configuration patterns New programming technique Result is achieved by executing an altered configuration 1. Module / Data – contains the configuration pattern 2. Pattern is modified by code 3. Execution of pattern achieves desired result
Programming with configuration patterns Module Person: Method draw alters a configuration stored in Data part according to values of attributes Point X, Point Y and executes it.
Programming with configuration patterns Section + Text New module with attributes: userText: String userSkin: String
Draws the section with userSkin color with text with userText inside
Programming with configuration patterns
Illustrative video 3.
Blox® Framework Full framework for project development Core implemented in Java executable on J2EE application servers
Configuration tool implemented in COP Implemented in itself Modules are defined as configuration of special Setup modules
Configuration refactoring Over 1000 modules
Blox® Framework Architecture CMS Data Form Security View Extensions OLAP DMS WfMS
Blox® Framework Architecture
Illustrative video 4.
COP Advantages Simpler and faster IS building using configuration Splitting development: Code implementation & Configuration Better reusability of COP modules Setup function directly defines how to use the modules Complex configuration patterns can be hidden in special modules
New programming techniques Programming with configuration patterns (sub-problem abstraction) Power of configuration polymorphism (better level of domain decomposition)
Simpler IS maintenance Transparent architecture in configuration Configuration refactoring
New point of view on Rapid Application Development Prototypes can be build only by configuration Driven through configuration refactoring and module upgrading
Practical results Orange Slovensko, a.s. Major mobile operator in Slovakia Back-end of portal: www.orange.sk
Slovak Bar Association Independent professional organization, currently associating cca 4100 lawyers and 1220 trainee lawyers
Extranet system Intranet system
Železničná spoločnosť, a.s. Leader in providing services in rail passenger transport in Slovakia Intranet information system Document management system Workflow management system
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