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mehmet tasar
Vaadin REFRESH
14. Dezember 2012 07:45
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mehmet tasar

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Hi All,
I started to switch from alloy to vaadin.

But i have got a trouble with Vaadin Form. I will tell an easy way.
I have two portlet. In first portlet, I populate a select component from database. it is working properly.
In second portlet, I get new data from user for first portlet's select component. But cannot repopulate the first portlet in current user session.

How can I refresh the first portlet's window?
David H Nebinger
RE: Vaadin REFRESH
14. Dezember 2012 10:38
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David H Nebinger

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Use the Liferay IPC plugin to send messages between your portlets.

You could send the data collected in portlet 2 to the listener on portlet 1, or you could send a simple message indicating that portlet 1 should refresh itself...

Alternatively you could use the Refresher plugin in portlet 1. It will invoke a method on portlet 1 to allow you to refresh automatically on a timed basis.
mehmet tasar
RE: Vaadin REFRESH
15. Dezember 2012 13:56
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mehmet tasar

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David H Nebinger:
Use the Liferay IPC plugin to send messages between your portlets.

You could send the data collected in portlet 2 to the listener on portlet 1, or you could send a simple message indicating that portlet 1 should refresh itself...

Alternatively you could use the Refresher plugin in portlet 1. It will invoke a method on portlet 1 to allow you to refresh automatically on a timed basis.


Thanks David,
I used the Liferay IPC. It is working if portlets are on the same page.
When i put separate pages, first portlet is not refreshing.
Jack Bakker
RE: Vaadin REFRESH
16. Dezember 2012 15:04
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Jack Bakker

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I think instead of 'Liferay IPC plugin' that David meant to write 'Vaadin IPC' plugin ? (https://vaadin.com/directory#addon/vaadin-ipc-for-liferay)

Vaadin IPC plugin uses Javascript so, yeah same page only

In contrast, and more generically Liferay IPC can do send/receive between portlets when placed on different pages ; Rick Sezov's "Liferay in Action" gives some detail on this I think
mehmet tasar
RE: Vaadin REFRESH
17. Dezember 2012 00:07
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mehmet tasar

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can you show me any example for Liferay IPC. is it working with vaadin?

Also I am searching a method like onload instead of init method.
so, if a user refresh the page, the window should be refresh too. because it is possible that another user can change this portlet's data.
Is there any a simple way for this issue?
Jack Bakker
RE: Vaadin REFRESH
17. Dezember 2012 08:57
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Jack Bakker

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mehmet tasar:
can you show me any example for Liferay IPC

I like Rich Sezov's Liferay in Action book example for Liferay IPC (inter-portlet communication). I think there is at least one wiki on this too somewhere here at www.liferay.com.

mehmet tasar:
is it working with vaadin?

I've used Vaadin IPC Plugin and I've used Liferay IPC with MVCPortlet but haven't tried Liferay IPC with Vaadin.

mehmet tasar:
Also I am searching a method like onload instead of init method.
so, if a user refresh the page, the window should be refresh too. because it is possible that another user can change this portlet's data.
Is there any a simple way for this issue?

I can't tell if you are asking about refreshing only the Vaadin portlet or the entire browser window. There are ways for each.
David H Nebinger
RE: Vaadin REFRESH
17. Dezember 2012 10:26
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David H Nebinger

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Jack Bakker:
I think instead of 'Liferay IPC plugin' that David meant to write 'Vaadin IPC' plugin ? (https://vaadin.com/directory#addon/vaadin-ipc-for-liferay)


Yeah, that's the right plugin but the Vaadin class that you end up using is LiferayIPC emoticon
David H Nebinger
RE: Vaadin REFRESH
17. Dezember 2012 10:43
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David H Nebinger

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mehmet tasar:
can you show me any example for Liferay IPC. is it working with vaadin?


Yes portlet events work with Vaadin. Here's a link for a basic implementation: http://demo.vaadin.com/6.2.0.pre1/docs/example-source/com/vaadin/demo/portlet/

Even though it says 6.2.0.pre1, the concepts are basically the same for all of Vaadin 6. May change under Vaadin 7, but since it's not out yet who knows?
mehmet tasar
RE: Vaadin REFRESH
17. Dezember 2012 10:56
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mehmet tasar

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Thank you David,
As i mention above, is there any other simple method to refresh the page?
Because A lot of function can impact the current page's data, so it does not make sense to use IPC for every transaction.
David H Nebinger
RE: Vaadin REFRESH
17. Dezember 2012 12:07
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David H Nebinger

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For that I'd use the refresher plugin.

It calls a method in your registered listener to refresh content.