[Laszlo-dev] presetting __lzobj for JavaRpc

[Alexander Wallace]

Hi All... I've made progress in my attempt to use Laszlo in portlets.

My plan has been to preset in _lzobj some initialized objects, for the  
Open Laszlo app to read. They need to be initialized with stuff not  
available to laszlo, so I'm instantiating them in the jsp that will  
contain the OL app and creating the __lzobj map in advance and setting  
it in the correct scope attribute, which in turn contains the objects  
i want laszlo to be able to use via JavaRpc.

Here are my findings.

1 - using session scope for JavaRpc:

a) If i create the __lzobj map in advance from the jsp (new  
org.openlaszlo.data.SessionBindingMap()), OL app WILL NOT read the  
map. I ignore where it'll put the objects i ask it to create, but it  
doesn't put it them in the __lzobj map i placed in the session.
b) If i let OL app create the map and place objects in it, i can see  
the map from the jsp and add stuff to it. This is not good enough to  
me unless i figure out a way to detect when OL app places stuff in the  
map so that i can place other stuff after for it to read.

2 - using webapp scope for JavaRpc.

a) if i create __lzobj map in advance from the jsp (new HashMap), OL  
app will read the map and use it for new objects it creates. I've yet  
to test if it'll use objects i place in the map in advance, but i  
guess it should.
b) I can also see in the jsp other objects added to the map by OL app,  
which is good.

As you can see, option 2 works for what I'm trying to do, except that  
I rather use session scoped variables since the objects i'm trying to  
initialize are different per user.

Can anyone shed some light as to why my attempts in point #1 don't  
work as expected? By looking at the JavaDataSource.java file, I can't  
see any reason why it would not work, except maybe the internal  
functionality of the SessionBindingMap, which i'll review first chance  
i get.

Thanks to all!