[Moims-dai] Architecture Description

David Giaretta david at giaretta.org
Wed Jun 12 17:38:20 UTC 2019


In OAIS terms PDI may be part of any Information Package. If the Information Package is an AIP then by implication the Information Object it will probably be Content Information.

 

..David

 

From: MOIMS-DAI <moims-dai-bounces at mailman.ccsds.org> On Behalf Of Mark Conrad
Sent: 12 June 2019 17:51
To: MOIMS-Data Archive Interoperability <moims-dai at mailman.ccsds.org>
Cc: Hughes, John S (398B) <john.s.hughes at jpl.nasa.gov>
Subject: Re: [Moims-dai] Architecture Description

 

" I cannot understand why Content_Information (a sub-type of Information_Object) shows methods get/putPreservationDescriptionInformation.  That would normally indicate that these are additional methods in addition to those which Information_Object has – but why? "

 

Because PDI does not apply to all Information_Objects - only Content_Information.

 


Mark Conrad
NARA Information Services

Systems Engineering Division (IT)
The National Archives and Records Administration
Erma Ora Byrd Conference and Learning Center
Building 494, Room 225
610 State Route 956
Rocket Center, WV  26726

Phone: 304-726-7820
Fax: 304-726-7802
Email: mark.conrad at nara.gov <mailto:mark.conrad at nara.gov>  

 

 

On Tue, Jun 11, 2019 at 9:17 AM David Giaretta <david at giaretta.org <mailto:david at giaretta.org> > wrote:

Hi Steve

 

I can understand why get/setDataObject and get/putRepresentationInformation are methods in Information_Object but I don’t understand why get/putInformationObjectMetadata is there. Also don’t understand the difference between get/setPID and get/putIdentificationInformation. Also what is the difference between put and set?

 

I cannot understand why Content_Information (a sub-type of Information_Object) shows methods get/putPreservationDescriptionInformation.  That would normally indicate that these are additional methods in addition to those which Information_Object has – but why?

 

Is there are mix-up between Information_Object and Information_Package?

 

I suspect that part of my confusion arises from using the ontology rather than a UML tool to create the diagrams etc. but that would not explain my questions/comments above.

 

Regards

 

..David

 

From: MOIMS-DAI <moims-dai-bounces at mailman.ccsds.org <mailto:moims-dai-bounces at mailman.ccsds.org> > On Behalf Of Hughes, John S (398B) via MOIMS-DAI
Sent: 11 June 2019 03:16
To: MOIMS-Data Archive Interoperability <moims-dai at mailman.ccsds.org <mailto:moims-dai at mailman.ccsds.org> >
Cc: Hughes, John S (398B) <john.s.hughes at jpl.nasa.gov <mailto:john.s.hughes at jpl.nasa.gov> >
Subject: [Moims-dai] Architecture Description

 

Hi all,

 

Attached please find the Model Specification Document (html format) and two diagrams with a few updates to some core classes. In particular the DPI get/put methods have been moved to the Content_Information class as per recent discussions.

 

Thanks,

Steve

 

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