On 8/6/2016 4:41 AM, Andrea Aime wrote:
On Sat, Aug 6, 2016 at 9:01 AM, Jody Garnett <jody.garn...@gmail.com
<mailto:jody.garn...@gmail.com>> wrote:
The sad part / danger / risk is that that our Filter interface
would only be one kind of predicate, and I would expect normal
java developers to make a query quickly in java code - which is
something we cannot optimize.
No objections to having streams around, just make sure to properly
document them and give warning to people
about performance issues.
As a suggestion, maybe it make sense to have
FeatureSource.getFeatureStream() and
FeatureSource.getFeatureStream(Filter) right next to each other.
Having a method which can either push-down a query or pull back all your
data at runtime has me worried for large datasets.
Cheers,
Jim
From what I gathered in the discussion so far, it's a bit like
hibernate, it can simplify things, but in order to use it
efficiently one needs to understand how it works internally. Maybe
indicate the docs examples of what will
be efficiently sent down to the store for native translation, and what
cannot be.
Wondering, are there risks about properly closing feature iterators
here? If you are using visitor I guess not,
but in that case there are other potential issues with our current
interface, like inability to bail out of the iteration early.
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 di Montramito 3/A
55054 Massarosa (LU)
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.
-------------------------------------------------------
------------------------------------------------------------------------------
_______________________________________________
GeoTools-Devel mailing list
GeoTools-Devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/geotools-devel
