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PrimeFaces Beginner's Guide by K. Siva Prasad Reddy

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Understanding partial page rendering (PPR)

PrimeFaces provides a generic partial page rendering (PPR) mechanism to update specific JSF components with AJAX.

PrimeFaces provides process, update attributes to indicate which view components need to be processed or updated. Partial processing also provides some keywords which has some special meaning.

Keyword

Description

@this

Component that triggers the PPR is processed.

@parent

Parent of the PPR trigger is processed.

@form

Encapsulating form of the PPR trigger is processed.

@namingcontainer

Encapsulating naming container.

@none

No component is processed, useful to revert changes to form.

@all

Whole component tree is processed just like a regular request.

Sometimes, we may need to process ...

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