<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"></head><body dir="auto"><div dir="auto">Hi Steve</div><div dir="auto"><br></div><div dir="auto">We probably will soon need to look also at other types of UML diagrams such as Component and Sequence to show different aspects of the system.</div><div dir="auto"><br></div><div dir="auto">One additional consideration is that OAIS has messages such as queries and requests which are not SIPs, which is why I focussed on IPs. In other words I am advocating that we treat even requests and queries as IPs.</div><div dir="auto"><br></div><div dir="auto">Finally, my diagrams are in terms of Interfaces (the programming use of that word) rather than Classes because Interfaces allow multiple inheritance for objects, and emphasise the essential methods required while avoiding implementation issues at this stage although these have to be addressed in due course.</div><div dir="auto"><br></div><div dir="auto">Regards</div><div dir="auto"><br></div><div dir="auto">David</div><div dir="auto"><br></div><div dir="auto"><br></div><div dir="auto"><br></div><div id="composer_signature" dir="auto"><div style="font-size:85%;color:#575757" dir="auto">Sent from my Samsung Galaxy smartphone.</div></div><div dir="auto"><br></div><div><br></div><div style="font-size:100%;color:#000000" dir="auto"><!-- originalMessage --><div>-------- Original message --------</div><div>From: "Hughes, John S (US 398B) via MOIMS-DAI" <moims-dai@mailman.ccsds.org> </div><div>Date: 17/03/2020 03:58 (GMT+00:00) </div><div>To: MOIMS-Data Archive Interoperability <moims-dai@mailman.ccsds.org> </div><div>Cc: "Hughes, John S (US 398B)" <john.s.hughes@jpl.nasa.gov> </div><div>Subject: [Moims-dai] OAIS Interoperability Framework </div><div><br></div></div>
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<p class="MsoNormal"><span style="color:#1F497D">Hi all,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Attached are the latest set of UML diagrams. The diagram previously distributed has been partitioned into three diagrams to simplify discussion. The “mapping” class diagram in particular is similar to the UML
interface diagram distributed by David. </span><span lang="EN-GB"><a href="https://docs.google.com/document/d/14V0wN6nEnG2MaSMmNClRzuDrTxcB0zjv0XNw2pdYDI8/edit?usp=sharing">https://docs.google.com/document/d/14V0wN6nEnG2MaSMmNClRzuDrTxcB0zjv0XNw2pdYDI8/edit?usp=sharing</a>
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<p class="MsoNormal"><span style="color:#1F497D">David’s InformationSender and InformationRequester are very interesting and seem to resolve a couple of issues. I would also appreciate more discussion on the abstraction layer, plugins, etc.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Thanks,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Steve<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
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