<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Hi,<div class=""><br class=""><div><blockquote type="cite" class=""><div class="">On 14 Nov 2017, at 17:28, Mark Taylor <<a href="mailto:m.b.taylor@bristol.ac.uk" class="">m.b.taylor@bristol.ac.uk</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div class="">Hi DAL,<br class=""><br class="">I'm taking my first thorough look at DataLink with a view to writing<br class="">a client. It mostly makes sense, but I have a question about the<br class="">use of the PARAM elements in the inputParams GROUP within a<br class="">service descriptor RESOURCE.<br class=""><br class="">According to VOTable, PARAM elements must have a @value attribute.<br class="">But the @value doesn't seem to serve any purpose in an inputParams<br class="">GROUP, since the PARAM is just there to describe arguments that<br class="">are to be supplied, in some other way, to the described service.<br class=""><br class="">Is the idea that (in both the ref-to-column and no-ref cases)<br class="">services must just fill in any syntactically legal value for the<br class="">@value attribute, and that clients should ignore that value altogether?<br class="">As far as I can see this is not mentioned in the DataLink document.<br class="">Can one of the authors or some other DataLink expert comment?</div></div></blockquote><div><br class=""></div><div>I’m working on SPLAT’s Datalink code right now.</div>I don’t remember seeing any case where the value is not empty My code reads it and</div><div>(if not empty) would add it as a default value to the GUI, where the user can modify it.</div><div><br class=""><blockquote type="cite" class=""><div class=""><div class=""><br class="">One other point: at the end of Section 4.3, it says<br class=""><br class=""> 'This PARAM would be added to the GROUP name="input" of the service<br class=""> description.'<br class=""><br class="">I think that should read 'name="inputParams"' - is that right?<br class=""></div></div></blockquote><div><br class=""></div>I think so.</div><div><br class=""></div><div><br class=""></div><div>Margarida</div><div><br class=""></div><br class=""><div class="">
<div style="color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant-ligatures: normal; font-variant-position: normal; font-variant-caps: normal; font-variant-numeric: normal; font-variant-alternates: normal; font-variant-east-asian: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><span class="Apple-style-span" style="border-collapse: separate; font-variant-ligatures: normal; font-variant-position: normal; font-variant-numeric: normal; font-variant-alternates: normal; font-variant-east-asian: normal; line-height: normal; border-spacing: 0px;"><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">-- <br class="">Margarida Castro Neves</div><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><br class="">German Astrophysical Virtual Observatory (GAVO)<br class="">Astronomisches Rechen-Institut (ARI)<br class="">Zentrum für Astronomie, Universität Heidelberg (ZAH)<br class="">Mönchhofstr. 12 - 14, 69120 Heidelberg<br class="">phone +49-6221-54-1891 fax +49-6221-54-1888<br class=""><a href="mailto:mcneves@ari.uni-heidelberg.de" class="">mcneves@ari.uni-heidelberg.de</a><br class="">http://www.ari.uni-heidelberg.de<br class=""><br class=""></div></span></div>
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