Hi, I have writen a proposal wiki page for this new feature.
https://github.com/geotools/geotools/wiki/Implement-a-pure-java-Dbase-indexing-to-optimize-shapefile-access
Best regardsAlvaro
De: A Huarte <ahuart...@yahoo.es>
Para: Andrea Aime <andrea.a...@geo-solutions.it>
CC: "geotools-devel@lists.sourceforge.net"
<geotools-devel@lists.sourceforge.net>
Enviado: Lunes 9 de noviembre de 2015 2:21
Asunto: Re: [Geotools-devel] [NEW FEATURE] Implement a pure java Dbase indexing
Hi, in order to avoid confusion, I would like to mention that I modified the
definition of the classes inheriting IndexManager of a new DbaseIndexManager as
previsous step to integrate fully the spatial and dbase indexing managers.
https://github.com/geotools/geotools/compare/master...ahuarte47:GEOS-6842_CdxDbaseIndex#diff-92177fcbab0ca3e01c1a3b7314142838R44
Sorry for the inconvenience.
Best regardsAlvaro
De: Andrea Aime <andrea.a...@geo-solutions.it>
Para: A Huarte <ahuart...@yahoo.es>
CC: Jody Garnett <jody.garn...@gmail.com>;
"geotools-devel@lists.sourceforge.net" <geotools-devel@lists.sourceforge.net>
Enviado: Sábado 7 de noviembre de 2015 11:48
Asunto: Re: [Geotools-devel] [NEW FEATURE] Implement a pure java Dbase indexing
On Sat, Nov 7, 2015 at 9:44 AM, A Huarte <ahuart...@yahoo.es> wrote:
Hi Jody, if with qnx files you refer to spatial index files, actually the
response is no.
The code only resolves pure alphanumeric filters, and it is cheched before
execute this indexing. When an spatial or fid filter is present, then the
current behavior in the shapefile provider is respected and the other filters
are executed.
Merging fid from both the spatial and alphanumeric part would indeed be a plus,
it's just a bit tricky to perform a correctextraction of the two parts from the
whole filter.
See:https://github.com/geotools/geotools/compare/master...ahuarte47:GEOS-6842_CdxDbaseIndex#diff-06c0794a50eeb31f89a201b87d5ca19cR363
https://github.com/geotools/geotools/compare/master...ahuarte47:GEOS-6842_CdxDbaseIndex#diff-a88ff865d43d7e251586c8e2231cbaa1R64
https://github.com/geotools/geotools/compare/master...ahuarte47:GEOS-6842_CdxDbaseIndex#diff-a88ff865d43d7e251586c8e2231cbaa1R120
But if it is desired, it is feasible mix the spatial and atribute indexing. We
can add easily the spatial operators to the filter evaluation and call to the
current spatial index managers.
Yes, this would be nice.
I just glanced over the diff (a proper review is going to take hours), why did
you need to add a complex property accessor? We already have xpath
basedaccessors, but what's more confusing, is that shapefiles only provide flat
expressions.Property accessors once registered apply system wide, not just to a
particular store, so one should be quite carefulwhen adding them.
CheersAndrea
--
==GeoServer Professional Services from the experts! Visithttp://goo.gl/it488V
for more information.==
Ing. Andrea Aime
@geowolfTechnical Lead
GeoSolutions S.A.S.Via Poggio alle Viti 118755054 Massarosa (LU)Italyphone:
+39 0584 962313fax: +39 0584 1660272mob: +39 339 8844549
http://www.geo-solutions.ithttp://twitter.com/geosolutions_it
AVVERTENZE AI SENSI DEL D.Lgs. 196/2003Le 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.
-------------------------------------------------------
------------------------------------------------------------------------------
Presto, an open source distributed SQL query engine for big data, initially
developed by Facebook, enables you to easily query your data on Hadoop in a
more interactive manner. Teradata is also now providing full enterprise
support for Presto. Download a free open source copy now.
http://pubads.g.doubleclick.net/gampad/clk?id=250295911&iu=/4140
_______________________________________________
GeoTools-Devel mailing list
GeoTools-Devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/geotools-devel
------------------------------------------------------------------------------
_______________________________________________
GeoTools-Devel mailing list
GeoTools-Devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/geotools-devel
