Re: [h2] TableEngine DBase

2013-08-02 Thread Thomas Mueller
Hi, > It should be good to find a generic interface that file drivers must implements What about something similar to MVRTreeMap? We could define an interface. Then, I guess we might be able to create an "adapter" that internally uses both DBF/SHP files and the MVRTreeMap, overlaid, like UnionFS

Re: [h2] TableEngine DBase

2013-07-30 Thread Nicolas Fortin (OrbisGIS)
> Yes. That's a good idea. My idea was, if the files are small, then the duplication wouldn't be such a big problem. How large are the files in general? It can also be related to data management. Those files size are from hundreds of kilobytes to hundred of megabytes, but some applications ar

Re: [h2] TableEngine DBase

2013-07-29 Thread Thomas Mueller
Hi, > I wrote a TableEngine because the link is done immediately and it avoids data duplication Yes. That's a good idea. My idea was, if the files are small, then the duplication wouldn't be such a big problem. How large are the files in general? > moreover it enable the use of index and update

Re: [h2] TableEngine DBase

2013-07-25 Thread Nicolas Fortin (OrbisGIS)
Hi, I wrote a TableEngine because the link is done immediately and it avoids data duplication, moreover it enable the use of index and updates. H2GIS will be used later by a rendering engine in OrbisGIS. In the GUI the user will select the shape files to link into the database then see theses i

[h2] TableEngine DBase

2013-07-24 Thread Thomas Mueller
Hi, Very cool! I would like to know a bit more about the use case. How large are those files? Do they need to be updated or are they just read-only? If the files could be imported, I would probably try to go in this direction (possibly combined with export). Regards, Thomas On Wed, Jul 24, 2

Re: [h2] TableEngine DBase

2013-07-24 Thread Noel Grandin
On 2013-07-24 11:39, Nicolas Fortin (OrbisGIS) wrote: I'm using the H2 Api in order to add a TableEngine linked with .dbf files and .shp files . The dbf TableEngine is here https://github.com/nicolas-f/H2GIS/tree/shapeDriver/h2drivers/src/main/java/org/

[h2] TableEngine DBase

2013-07-24 Thread Nicolas Fortin (OrbisGIS)
Hi, I'm using the H2 Api in order to add a TableEngine linked with .dbf files and .shp files . The dbf TableEngine is here https://github.com/nicolas-f/H2GIS/tree/shapeDriver/h2drivers/src/main/java/org/h2gis/drivers/dbf Currently it is a read only table