On Sun, Aug 9, 2015 at 12:15 PM, Christian Mueller < christian.muel...@os-solutions.at> wrote:
> Different DB implementations provide support for temporal data. An > overview is here > > https://en.wikipedia.org/wiki/Temporal_database > > section > Implementations in relational databases > > Here is an example for the encoding of org.opengis.filter.temporal.During > > The default geotools encoding in org.geotools.data.jdbc.FilterToSQL > produces > > where ? between from and to (closed interval) > > DB2 would need > > where from <= ? and ? < to (semi closed interval) > > Oracle needs > > where from <= ? and (? < to or to is null) (semi closed interval > including null value as open end) > > Some time ago, we had a discussion about the topic. > http://sourceforge.net/p/geoserver/mailman/message/31706807/ > > My idea is to add a parameter USE_DB_TEMPORAL_MODEL to the datastore > factory. This param defaults to false. If the param is true, the specific > DB temporal support should be used. > One thing I'm not sure about... can you can have timestamp in tables, without enabling the "temporal database/interval of validity" mode on them? It seems that in Oracle at least some special instructions have to be run: http://www.oracle.com/webfolder/technetwork/tutorials/obe/db/12c/r1/ilm/temporal/temporal.html If this is the case, can't you have only some tables enabled that way, and thus, require a per table support, in other words, probably a hint? (althought... that might cause issues with transactions, if special write semantics/syntax are needed too). Cheers Andrea -- == GeoServer Professional Services from the experts! Visit http://goo.gl/it488V for more information. == Ing. Andrea Aime @geowolf Technical Lead GeoSolutions S.A.S. Via Poggio alle Viti 1187 55054 Massarosa (LU) Italy phone: +39 0584 962313 fax: +39 0584 1660272 mob: +39 339 8844549 http://www.geo-solutions.it http://twitter.com/geosolutions_it *AVVERTENZE AI SENSI DEL D.Lgs. 196/2003* Le informazioni contenute in questo messaggio di posta elettronica e/o nel/i file/s allegato/i sono da considerarsi strettamente riservate. Il loro utilizzo è consentito esclusivamente al destinatario del messaggio, per le finalità indicate nel messaggio stesso. Qualora riceviate questo messaggio senza esserne il destinatario, Vi preghiamo cortesemente di darcene notizia via e-mail e di procedere alla distruzione del messaggio stesso, cancellandolo dal Vostro sistema. Conservare il messaggio stesso, divulgarlo anche in parte, distribuirlo ad altri soggetti, copiarlo, od utilizzarlo per finalità diverse, costituisce comportamento contrario ai principi dettati dal D.Lgs. 196/2003. The information in this message and/or attachments, is intended solely for the attention and use of the named addressee(s) and may be confidential or proprietary in nature or covered by the provisions of privacy act (Legislative Decree June, 30 2003, no.196 - Italy's New Data Protection Code).Any use not in accord with its purpose, any disclosure, reproduction, copying, distribution, or either dissemination, either whole or partial, is strictly forbidden except previous formal approval of the named addressee(s). If you are not the intended recipient, please contact immediately the sender by telephone, fax or e-mail and delete the information in this message that has been received in error. The sender does not give any warranty or accept liability as the content, accuracy or completeness of sent messages and accepts no responsibility for changes made after they were sent or for other risks which arise as a result of e-mail transmission, viruses, etc. -------------------------------------------------------
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