Sharing portlet preferences among users

Hello,
Is it possible to share portlet preferences among users? So that the
portlet preferences would be stored per portlet instance, and would be
the same for every user?
If this is not possible with Java portlets (JSR-168), can it be done
with other portlet types (JSP portlet, page flow portlet), using the
PortletPreferences API?
The JSR-168 specification says:
"Portlet Specification assumes preference attributes are user specific,
it does not make any provision at API level or at semantic level for
sharing preference attributes among users. If a portal/portlet-container
implementation provides an extension mechanism for sharing preference
attributes, it should be well documented how the sharing of preference
attributes works."

Betsy,
Does WLP provide a way to allow a user to store only a subset of all
his portlet preferences (using only JSR 168 api) ?
My aim is to try to create a JSR 168 compliant portlet where few of
the preferences are allowed to modified by the user (in the edit
mode), while all other preferences may be modified only by a portal
admin (thru admin view). However, the PortletPreferences.store()
method seems to store values of all current preferences for the
particular user, with the result that future changes by the admin are
not reflected for any user who has already customized his
preferences.You can let the admin propagate changes to the user via admin tools.
There is an option in admin tools to do that.
Setting the preference <read-only> attribute to 'true' does not help
either, as the store method still attempts to store the value and
then throws a ReadOnlyException.In this case, the setValue/setValues/reset and not the store will throw
the ReadOnlyException.
Why does WLP attempt to store all preference values; as opposed to
setting only those which have been explicitly set using
PortletPreferences.setValue(key, value)?The implementation does not keep track of changes explicitly in memory.
Even if it keeps track of changes, I'm not sure if this would solve your
use case.
Will BEA be changing this in future releases, and is there a
work-around for now?The suggested approach is to let admins propagate changes to users.
Subbu
>
Thanks, Betsy
Although WLP does not support the notion of sharing preferences,
WLP lets you manage preferences in a hierarchy via the admin tools.
When an admin sets preferences on a portlet, as long as users don't
customize their portlets, all users get the same portlet instances,
and hence share preferences.
Subbu
Bob said the following on 02/12/2004 04:08 AM:
Hello,
Is it possible to share portlet preferences amongusers? So that the
portlet preferences would be stored per portletinstance, and would be
the same for every user?
If this is not possible with Java portlets(JSR-168), can it be done
with other portlet types (JSP portlet, page flowportlet), using the
PortletPreferences API?
The JSR-168 specification says:
"Portlet Specification assumes preferenceattributes are user specific,
it does not make any provision at API level or atsemantic level for
sharing preference attributes among users. If aportal/portlet-container
implementation provides an extension mechanism forsharing preference
attributes, it should be well documented how thesharing of preference
attributes works."

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Thanks in advance.
Regards,
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Sharing portlet preferences among users

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