Cytoscape Wiki|
← Revision 7 as of 2008-07-03 21:37:14
Size: 2225
Comment:
|
← Revision 8 as of 2008-07-03 21:38:30 →
Size: 2264
Comment:
|
| Deletions are marked like this. | Additions are marked like this. |
| Line 25: | Line 25: |
| Aspect Oriented Programming (AOP) is a technique to manage cross-cutting concerns shared by multiple objects (and AOP and object oriented programming are not mutually exclusive.) | Aspect Oriented Programming (AOP) is a technique to manage cross-cutting concerns shared by multiple objects (note: AOP and object oriented programming are not mutually exclusive!) |
| Line 40: | Line 40: |
| === Aspect Oriented Programming === |
Spring Dynamic Modules for Cytoscape
(Under construction) TableOfContents
Introduction
From Cytoscape 3.0, the entire system is based on OSGi, and this modularizes Cytoscape into a collection of bundles. OSGi bundles are just regular jar files plus a simple metadata file (MANIFEST.MF) and they can be used in other non-OSGi systems. However, once we use raw OSGi API, the bundle is coupled with OSGi environment, and it is not easy to port the bundle to non-OSGi environments. [http://www.springframework.org/osgi Spring Dynamic Modules (Spring DM)] is one of the solutions to achive maximum modulality.
Spring DM is a part of [http://www.springframework.org/ Spring Framework], which is a defacto standard framework for enterprise-level systems. Because of its populality, lots of documents and tools are available.
Usecases
The core feature/concept of Spring Framework is Inversion of Control (IoC) or Dependency Injection (DI). The point is, keep objects independent from specific framework (those objects are called POJO, Plain Old Java Objects), and use metadata to configure system. There are many usecases of Spring DM for Cytoscape:
Service Management
In an OSGi environment, objects shared by multiple bundles are usually managed by [http://www.knopflerfish.org/osgi_service_tutorial.html OSGi Service Registory]. There are lots of Cytoscape objects which should be managed by a central registory, such as layout algorithms, commands, etc.
Testing
Good starting point to use Spring for Cytoscape. We can use DI to make mock objects to do integration test.
Integration Test
Mock Object
Interface-Based Programming
Aspect Oriented Programming
Aspect Oriented Programming (AOP) is a technique to manage cross-cutting concerns shared by multiple objects (note: AOP and object oriented programming are not mutually exclusive!)
Logging
Benchmarking
Example: Command Parameter Intercepter
Managing Instances by Setter Injection
Open Issues / Problems
- Inter-bundle aspect management.
References
Spring Framework
OSGi