May 2015
Beginner to intermediate
412 pages
8h 44m
English
Content preview from Primefaces Cookbook Second EditionBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Updating live data in charts with polling
The chart component nicely integrates with the <p:poll> component to update itself with an ever-changing data model.
How to do it…
A basic definition for a chart with live data is given here:
<p:poll interval="2" update="live" />
<p:chart id="live" type="pie" model="#{chartBean.livePieModel}"
style="height:250px" />The randomly generated model for the chart is implemented here:
public PieChartModel getLivePieModel() { int random1 = (int)(Math.random() * 1000); int random2 = (int)(Math.random() * 1000); liveChartModel.getData().put("Candidate 1", random1); liveChartModel.getData().put("Candidate 2", random2); liveChartModel.setLegendPosition("w"); liveChartModel.setShowDataLabels(true); return liveChartModel; ...Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.