Paging Models

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Added by Barbara Weinstein, last edited by Barbara Weinstein on Aug 11, 2009

The Matrix uses various paging models to improve overall rendering performance and simplify performance tuning tasks for the developer. Paging models determine how much and when data is displayed. The key paging models include the following types.

Property	Static Field	Description
No paging	`Matrix.PAGING_OFF`	Paging is turned off. All data is painted at once with the outer container.
2-pass	`Matrix.PAGING_2PASS`	The empty outer container is painted first. Then all data is painted in a second pass.
Chunked	`Matrix.PAGING_CHUNKED`	The outer container is painted first. Chunked sets of data are painted on-screen during repeated passes until all data is painted. The chunk size can be tuned for the use case. This is often determined by the number of records, screen size, column count, and so on.
Paged	`Matrix.PAGING_PAGED`	The outer container is painted first. The first and last panels are painted during a second pass. As the user scrolls, relevant panels are added and unused panels are collected. Note: Requires that row height be fixed.
Stepped (hierarchical)	`Matrix.PAGING_STEPPED`	This setting only applies to hierarchical models. When set, only expanded nodes are rendered. The data is fetched and painted on-screen when the user expands a given node in the hierarchy.

Rendering Models

Chapter 9 Using Matrix Components

Fine Tuning for Performance

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Paging Models

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