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</o:shapelayout></xml><![endif]--></head><body lang=EN-GB link="#0563C1" vlink="#954F72" style='word-wrap:break-word'><div class=WordSection1><p class=MsoNormal>I have tried to redraw one of the key hand-drawn diagrams, and explain what is meant.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>The COMMS I/F is a way to allow us, in version 2 of OAIS-IF, to use part of the CCSDS SM&C MAL – MAL allows one to use a variety of other comms protocols including Space Link. <o:p></o:p></p><p class=MsoNormal>The COMMS I/F also allows REST to be used between GA and GA, OR between the GA and SA – which would be useful for use of Cloud resources; however it should also allow, for efficiency’s sake, an “In memory” connection between SA and GA.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>The Switchboad and Registry Resources (RRORI is Regisrty/Repository Representation Information) are essentially properties files which contain the information required, but COULD also have the name of a specialised archive which can use the rest of OAIS-IF to obtain information needed.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Since dealing with the Switchboard and Registry can be done in a common way, these connect to the Generic Adapter (GA).<o:p></o:p></p><p class=MsoNormal>However the information is really dealt with in the SA – so we need an appropriate GA/SA interface.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>The Sprecific Adapter (SA) is the only thing which knows enough to serialise the various objects, so JSON is created or consumed in the SA, which is sent between SA and GA. JSON is shown here as the serialisation, but XML is an alternative serialisation – however then, to allow interoperability, the SA would need to be able to either transform between JSON and XML OR deal with them both.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>We show a limited set of methods “getDataObject” etc for the SA to communicate with the native (Archive or Consumer) software. However there must also be a native interface which we cannot/do not specify.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Steve/ Mike/ Roberta- is this right?<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>David<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><img width=1229 height=670 style='width:12.8055in;height:6.9791in' id="Picture_x0020_1" src="cid:image001.png@01D8E544.AF5DB340"><o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal><b><span lang=EN-US style='mso-fareast-language:EN-GB'>From:</span></b><span lang=EN-US style='mso-fareast-language:EN-GB'> david@giaretta.org <david@giaretta.org> <br><b>Sent:</b> 21 October 2022 09:21<br><b>To:</b> MOIMS-DAI List <moims-dai@mailman.ccsds.org><br><b>Subject:</b> Drawings and images from DIA meeting in Toulouse<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span lang=EN-US>See <a href="https://www.dropbox.com/sh/kf58el0dmexns28/AADpgOETO6P0fDEXU17bEVM4a?dl=0">https://www.dropbox.com/sh/kf58el0dmexns28/AADpgOETO6P0fDEXU17bEVM4a?dl=0</a><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>..David<o:p></o:p></span></p></div></body></html>