Sharing objects in iViews

Question

Hi,
I am new in the development of iView. I want to access a JavaBean from many iViews. I tried to store it in the IPortalComponentSession with no success. I know the JSR 18 specific way....there I store it in the PortletSession. Where have to be the JavaBean stored in SAP Portal ? And with which Scope (SCOPE_UNIQUE, SCOPE_CONTEXT or SCOPE_COMPONENT).
I programmed a test case in which 2 iView instantiate a bean and store it to the IPortalComponentSession. But each iView creates its own JavaBean, not one shared.
Do I have to store the JavaBean in the HTTPSession ?
Thanks
Oliver

Answer 1

Hi Oliver,
> it was my fault...
For sure it was
> PortletSession with APPLICATION_SCOPE (share objects
> between portlets) or PORTLET_SCOPE (only access from
> the portlet which stored the object)...
Yes, the SAP specific sessions and scopes are something which confuses everybody.
Just to make it clear in the background:
For each PortalComponentSession a Hashtable is stored within the HttpSession under the name "PCSESSION_<username>@<componentname>", for example: [email protected]
It is obvious that you cannot access data for other components from this, even if they belong to the same application. There is no store between the whole HttpSession and the PortalComponentSession (this is quite bad, for the PortalComponentSession for example having the good feature to differentiate between users for security reasons, this is missing if you don't add something by hand when using HttpSession to share for example application wide data).
Within this Hashtable, the objects are stored in the PortalComponentSession, in the following way:
For scope UNIQUE, under the key UNIQUE:pcd:portal_content/com.btexx/com.btexx.JSPDynPageExample|pcd%3aportal_content%2fcom%2ebtexx%2fcom%2ebtexx%2eJSPDynPageExample|myKeyForScopeUnique,
for scope CONTEXT, under the key CONTEXT:pcd:portal_content/com.btexx/com.btexx.JSPDynPageExample|myKeyForScopeContext
for scope COMPONENT, under the key COMPONENT:myKeyForScopeComponent
where pcd:portal_content/com.btexx/com.btexx.JSPDynPageExample is the PCD path of the concrete iView. I cannot see or explain the difference between UNIQUE and CONTEXT. For both, you can only access data which is valid for the same iView (within the PCD), when for scope COMPONENT you can share data among the same component (but called via different contexts / iView / PCD paths).
One more remark: The scopes are not surrounding each other! If you put something into the PCS with scope CONTEXT, you cannot access this object from scope COMPONENT.
Hope this sheds some light on this... (could be the beginning of a weblog I wanted to write since some months).
Best regards
Detlev