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Clark - did you ever find a solution to this? I have a similar use case, and before I post a new question I'm hoping you might've found an answer

Hi,

I used portlet schedulers back in 5.2.3 and if it wasn't changed, you don't have access to such objects. The scheduler is run only once, not per portlet instance, right?

If I remember, the scheduler is defined for the portlet as a whole (you define one scheduler class in liferay-portlet.xml per portlet), that means one scheduler for all instances of the portlet in the whole portal, on all pages.

I'm not sure how this works with more companies in portal, but I assume this is not your case and you have only one company.

If you want to do some portlet preferences update for one portlet instance located on some page, you have to define plid (page's id, e.g. 10520) and portletId (instance id, e.g. _mybusinessapplicationportlet_WAR_myportlet_INSTANCE_FqL4) in some properties file and read this file from scheduler. Then you can load portlet preferences of such portlet instance via:

Layout layout = LayoutLocalServiceUtil.getLayout(plid);

javax.portlet.PortletPreferences prefs = PortletPreferencesFactoryUtil.getLayoutPortletSetup(layout, portletId);