Hi Esteban, Thanks a lot, I think I’ll try your History package, it seems to be a very good starting point (instead of hacking it myself). I’ll try it soon.
Thanks for all the information ;) Cheers, Cédrik > Le 23 avr. 2016 à 18:28, Esteban A. Maringolo <emaring...@gmail.com> a écrit : > > Maybe instead of having a Dictionary, you can use my History package [1]. > It allows you to add elements to "the history", and the History class > will provide certain "lookup" strategies depending on how you want to > query it. > > It is a trimmed down version of an utility class I used for years in > commercial products where the History contained thousands of elements. > This version uses linear search, my previous implementation used > binary search which was significantly faster with lots of elements in > the collection. > > Of course it doesn't solve your spatial queries needs, I don't know if > there is something in Smalltalk for that other than the distance > between two coordinates[2], PostgreSQL 9.2 has some support for > "temporal" data/tables which you could combine with PostGIS if you > need to combine a spatial query with a temporal one [3]. > > Regards, > > [1] http://www.smalltalkhub.com/#!/~emaringolo/History > [2] http://pastebin.com/ThKDXCKK > [3] > http://clarkdave.net/2015/02/historical-records-with-postgresql-and-temporal-tables-and-sql-2011/ > Esteban A. Maringolo > > > 2016-04-23 12:13 GMT-03:00 Cédrick Béler <cdric...@gmail.com>: >> >> >> Sure, but 1) that's not a lot >> >> 2) do you even know if you need interactive stuff or if batch processing is >> ok? >> >> >> interactive I would say… but hard to be certain right now as it depends on >> design choices… do we cache ? do we aggregate past data ? extra indexes ? >> I’ll see later. >> I want something simple, keep everything… and query according to time >> interval, areas (contexts)… >> >> But yes for now this is pointless to look for something optimal and I’ll use >> a dictionary as it will be small at start. >> >> Cheers, >> >> Cédrik >> >> >> >> >> -- >> Damien Pollet >> type less, do more [ | ] http://people.untyped.org/damien.pollet >> >> >
