Salesforce Data Integration Certification | Pt 8

VisualForce

This page is part of Data Integration Certification Notes

VisualForce Pages

Create & Edit Visualforce Pages Unit | Salesforce Trailhead

Visualforce_in_Practice.pdf (developerforce.com)

Basic building blocks for application developers. Similar to a standard web page but includes powerful features to access, display, and update your organization’s data. Pages can be referenced and invoked via a unique URL, just as they would be on a traditional web server.

Action Region and Poller in VisualForce

apex:actionRegion | Visualforce Developer Guide | Salesforce Developers

apex:actionPoller | Visualforce Developer Guide | Salesforce Developers

apex:ActionRegion

Use to submit form data from specific sections of the VF page.

An area of the VisualForce page that demarcates which components should be processed by the Force.com server when an AJAX request is generated. Only the components in the body of the <apex:actionRegion> are processed by the server, thereby increasing the performance of the page.

Apex:ActionPoller

A timer that sends an AJAX request to the server according to a time interval that you specify. Each request can result in a full or partial page update.

Instead of holding up the initial page load, you can render the initial information right away, then check periodically for updates.

Ensure action is lightweight. The constant querying with ActionPoller generates more distraction than results, consider utilizing streaming API to refactor it, effectively just getting the final result when it’s ready.

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