(r2) UDFcatalogue10RFC < IVOA

IVOA Web>IvoaDAL>UDFcatalogue10RFC (revision 2) (raw view)~~EditAttach~~
---++ UDF catalogue Proposed Endorsed Note: Request for Comments

This PEN proposes a mechanism for listing ADQL extension functions that are requried to work the same way across different data centers. It is a supplement to the ADQL standard, and currently there's text in ADQL 2.1 referencing it.

The latest version of the UDF catalogue can be found at: http://ivoa.net/documents/udf-catalogue/

Version control: https://volute.g-vo.org/svn/trunk/projects/dal/udf-catalogue

---+++ Reference Interoperable Implementations

As to the endorsed content, there should always be at least two services carrying the functions. Regrettably, the required !RegTAP res_detail table doesn't carry UDF names (there's always a use case exactly for the most exotic feature you can think of), so to find these services, you'll have to rely on volutary extra keys parsed by the services.

The !RegTAP service at http://dc.g-vo.org/tap parses the extra res_detail. Use a query like

<pre>select access_url
from rr.res_detail
natural join rr.interface
natural join rr.capability
where detail_xpath='/capability/language/languageFeatures/feature/form'
and detail_value like 'ivo_healpix_index%'
and standard_id='ivo://ivoa.net/std/tap'
</pre>

---+++ Implementations Validators

Not really applicable here. It might be nice to have a few standard queries per function with the intended results, but since ADQL doesn't have queries without from clauses and there is essentially no content in the underlying databases you can rely on, they're really hard to write.

Perhaps a case for an ADQL extension: Facilitate writing tests?

%TOC{depth="2"}%

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---++ Comments from the IVOA Community during RFC/TCG review period: 2020-02-15 .. 2020-03-30

The comments from the TCG members during the RFC/TCG review should be included in the next section.

In order to add a comment to the document, please edit this page and add your comment to the list below in the format used for the example (include your Wiki Name so that authors can contact you for further information). When the author(s) of the document have considered the comment, they will provide a response after the comment.

Additional discussion about any of the comments or responses can be conducted on the WG mailing list. However, please be sure to enter your initial comments here for full consideration in any future revisions of this document

   * Sample comment by TWiki.WikiName 
      * Response (by TWiki.WikiName)

---
---

---++ Comments from TCG member during the RFC/TCG Review Period: 2020-02-15 .. 2020-03-30

WG chairs or vice chairs must read the Document, provide comments if any (including on topics not directly linked to the Group matters) or indicate that they have no comment.

IG chairs or vice chairs are also encouraged to do the same, althought their inputs are not compulsory.

---+++ TCG Chair & Vice Chair

---+++ [[IvoaApplications][Applications Working Group]]

---+++ [[IvoaDAL][Data Access Layer Working Group]]

---+++ [[IvoaDataModel][Data Model Working Group]]

---+++ [[IvoaGridAndWebServices][Grid & Web Services Working Group]]

---+++ [[IvoaResReg][Registry Working Group]]

---+++ [[IvoaSemantics][Semantics Working Group]]

---+++ [[IvoaDCP][Data Curation & Preservation Interest Group]]

---+++ [[IvoaTheory][Education Interest Group]]

---+++ [[IvoaKDD][Knowledge Discovery Interest Group]]

---+++ [[IvoaSS][Solar System Interest Group]]

---+++ [[IvoaTheory][Theory Interest Group]]

---+++ [[IvoaVOEvent][Time Domain Interest Group]]

---+++ [[IvoaOps][Operations]]

---+++ [[IvoaStdsDocsProc][Standards and Processes Committee]]

---

---++ TCG Vote : %RED%Vote_start_date - Vote_end_date%ENDCOLOR%

If you have minor comments (typos) on the last version of the document please indicate it in the Comments column of the table and post them in the TCG comments section above with the date.

| Group | Yes | No | Abstain | Comments |
| TCG | | | | |
| Apps | | | | |
| DAL | | | | |
| DM | | | | |
| GWS | | | | |
| Registry | | | | |
| Semantics | | | | |
| DCP | | | | |
| KDIG | | | | |
| SSIG | | | | |
| Theory | | | | |
| TD | | | | |
| Ops | | | | |
| <nop>StdProc | | | | |

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<br /> <!--</p> <ul> <li> <ul> <li> Set ALLOWTOPICRENAME =<span class="WYSIWYG_PROTECTED"> IVOA.TWikiAdminGroup</span> </li> </ul></li> </ul>-->
Topic revision: r2 - 2020-02-12 - MarkusDemleitner
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