Update PrimeFaces dataTable from backing bean

Question

I use schedule(Timer) in bean which update variable when employees enrolling which get data from fingerprint device. I need to update component in jsf from backing bean when variable in bean updated. I try to use primefaces poll component but it update component every time.

score 17 · Accepted Answer · answered Oct 03 '13 at 13:52

17

Assuming you'll be calling a Java method using Listener from Fingerprint device API, and from ManagedBean you can update any Primefaces Component using RequestContext.

RequestContext.getCurrentInstance().update("ID_OF_YOUR_DATATABLE")

answered Oct 03 '13 at 13:52

Kishor Prakash

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In Primefaces 7.0 (2019) is import org.primefaces.PrimeFaces; PrimeFaces.current().ajax().update("Element ID"); – Hernaldo Gonzalez Sep 03 '19 at 13:49

score 2 · Answer 2 · edited May 23 '17 at 11:54

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There's already a component in Primefaces, as you can see : here.

RequestContext is a feature with various handy utilities.

Update component(s) programmatically. Execute javascript from beans. Add ajax callback parameters. ScrollTo a specific component after ajax update.

Have a look here for an example.

edited May 23 '17 at 11:54

Community

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answered Oct 03 '13 at 14:56

Ioan

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score 2 · Answer 3 · answered Feb 10 '20 at 10:51

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It has changed from primefaces 7.0

PrimeFaces.current().ajax().update("elementJS");

answered Feb 10 '20 at 10:51

manelseo

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score 1 · Answer 4 · answered Oct 04 '13 at 10:01

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I resolved my problem with primefaces push component.

java code is:

 PushContext pushContext = PushContextFactory.getDefault().getPushContext();
  pushContext.push("/finger", "Pressed");

in jsf:

<p:socket channel="/finger" onMessage="clearCookies" />

"clearCookies" is remoteCommand function which update my dataTable.

answered Oct 04 '13 at 10:01

Guwanch

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I had also followed this approach. Invoking `remoteCommand`'s javascript function on `onMessage` of `p:socket`. – Parkash Kumar Aug 15 '17 at 12:26

Update PrimeFaces dataTable from backing bean

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