Re: [higgins-dev] PDPs for context providers

[David Kuehr-McLaren <dkuehrmc@xxxxxxxxxx>]

Tom, 

I work with Raj (we are on different
timezones, so we are tag-teaming the post). Thanks for the implementation.
I assumed that the PDP interfaces in org.eclipse.higgins.util.idas.cp are
not required to be implemented by an IdAS CP. The idas.util.cp PDP interfaces
and jscript implementation *may* be used by a CP.  Or is it that a
CP *must* use the idas.util.cp PDP interfaces for attribute mapping and
transformation? 

Thanks, 

David 

David Kuehr-McLaren 
IBM Tivoli
919.224.1960

"Tom Doman" <tdoman@xxxxxxxxxx>
Sent by: higgins-dev-bounces@xxxxxxxxxxx

04/30/2008 11:34 AM

Please respond to
"Higgins \(Trust Framework\) Project developer discussions"        <higgins-dev@xxxxxxxxxxx>

To	<higgins-dev@xxxxxxxxxxx>
cc
Subject	Re: [higgins-dev] PDPs for context providers

One more thing I should add, as Jim was saying yesterday,
some of IdAS
is being refactored and so that will effect this code as well (ie. Metadata
is changing to regular attributes).  So, you may want to wait to get
into
this stuff too deeply.

Tom
 
>>> "Tom Doman" <tdoman@xxxxxxxxxx> 04/30/08 9:03
AM >>> 
Raj,

Yes, there is.  I don't know how you discovered the IAttributePDPs
interface
but the JNDI CP code has example usages of all of the PDPs we've defined
in
the Higgins project so far.  Note that those PDPs are implemented
only with
_javascript_ implementations so far.  In other words, no other policy
languages
have yet been implemented.  We'll also want to create additional PDPs
in the
future as well but the basic set you'd need are there as exampled in the
JNDI
CP as long as you're happy to define your CPs policies in _javascript_.

Tom
 
>>> Rajalakshmi S Iyer <iyer_rajalakshmi@xxxxxxxxxx> 04/30/08
4:39 AM >>> 

Hello,

I am in the process of defining a context provider and need some guidance
with respect to mapping between the provider (my context) and consumer
(IdAS based context provider) IDs, types etc. I have come up with an
ontology for this context provider that derives from the base Higgins
ontology.

As I understand, I will need to implement the IAttributePDPs interface
for
my context provider which will do the conversion for attribute names, types
and their values between provider and the consumer.

However, conversion is also required between provider and consumer entity
IDs and entity types. For e.g. a 'Person' in the context provider ontology
could mean an 'ePerson' in the context's schema. Is there an interface
to
cover this kind of entity-  level policy decisions? If not, is it
worthwhile
coming up with one?

Thanks in advance,
Best regards,
Rajalakshmi Iyer

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