Apex Developer Guide
jNote: This release is in preview. Features described here don’t become generally available until the latest general availability date that Salesforce announces for this release. Before then, and where features are noted as beta, pilot, or developer preview, we can’t guarantee general availability within any particular time frame or at all. Make your purchase decisions only on the basis of generally available products and features.
Visualforce Classes
- A custom controller is a class written in Apex that implements all of a page's
logic, without leveraging a standard controller. If you use a custom controller, you
can define new navigation elements or behaviors, but you must also reimplement any
functionality that was already provided in a standard controller.
Like other Apex classes, both standard and custom controllers execute entirely in user mode, in which the object and field-level permissions of the current user are enforced.
- A controller extension is a class written in Apex that adds to or overrides behavior in a standard or custom controller. Extensions allow you to leverage the functionality of another controller while adding your own custom logic.
- Action
- Dynamic Component
- IdeaStandardController
- IdeaStandardSetController
- KnowledgeArticleVersionStandardController
- Message
- PageReference
- SelectOption
- StandardController
- StandardSetController
In addition to these classes, the transient keyword can be used when declaring methods in controllers and controller extensions. For more information, see Using the transient Keyword.
For more information on Visualforce, see the Visualforce Developer Guide.