On Thu, Oct 1, 2015 at 6:33 PM, Roel De Nijs <[email protected]> wrote:
> *Conclusion:* so it seems for SQL Server 2008 R2 it would be a good > thing to get rid of the additional Filter condition if you have an > Intersects in the CQL_FILTER (and probably for the other spatial functions > as well). > Hum... a simple "forget the rest if there is a intersect" cannot be applied, because of code genericity. In particular: * Doing so at the WMS level would incur in quite a bit of overhead for more intellingent databases, especially if the intersection is covering a larger area * Doing so at the store level would make WFS responses invalid, because all filters need to be applied There is however a way, if you want to venture in some logic filtering simplification, which is to modify the SimplifyingFilterVisitor ( https://github.com/geotools/geotools/blob/master/modules/library/main/src/main/java/org/geotools/filter/visitor/SimplifyingFilterVisitor.java ) so that it recognizes the case of multiple spatial filters and-ed toghether, and simplifies them into a single equivalent spatial expression (e.g. you take all bboxes and polygons and intersect them) If you can make a pull request with that kind of change, plus tests in SimplifyingFilterVisitorTest ( https://github.com/geotools/geotools/blob/master/modules/library/main/src/test/java/org/geotools/filter/visitor/SimplifyingFilterVisitorTest.java ) to cover the new simplification paths, there is a good chance the pull request is going to be accepted. Also do check the contribution guidelines here: -- == 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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