Sunday, 22 February 2015

Design Patterns in Saleforce.com

Design Patterns in Saleforce.com:

1. Singleton - minimizing object instantiation for improved performance and to mitigate impact of governor limits

2. Strategy - defining a family of algorithms, enscapsulating each one and making them interchangeable and selectable at runtime

3. Decorator - extending the functionality of an sObject in Apex

4. Facade - simplifying the execution of classes with complex interfaces (e.g. web service callouts)

5. Composite - treating a group of objects in a similar manner to a single instance of that object

6. Bulk State Transition - efficiently tracking the change of a field value in a trigger and executing functionality based on this change

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