[Legal-general] Do we need an extra server at all...?

[Kari Pihkala]

Currently, we have two/three options to get the PD database running. I've
listed pros and cons for these.

1. One database, which holds PD and SA objects, some objects may belong to
both. Contributors can decide which set of objects they are modifying.
 + tightly integrated into OSM infrastructure
 + easy to apply map changes to PD and SA objects at the same time (?)
- requires changes to the server and client software (to manage different
object versions)
 - takes a long time to implement (we don't even have the design for it)
 - setting up requires support by OSM administrators

2. Two databases, one for SA objects and one for PD objects. Manual copying
of objects from PD to SA.
 + possible to set up right now
 + can be done without support from OSM admins
 - may drift apart from OSM
 - manual work to copy PD objects to SA database

There is one issue with the two database system. If we have a completely own
server and database, it means that the users need to create a new login id
for it. Also, the GPS track repository will be separate from the current
OSM. This could be prevented by creating only way/nodes tables and accessing
the current OSM/SA users tables/GPS tables. But this requires support from
OSM admins. So this option looks like:

3. Two databases, one for SA objects and one for PD objects. Manual copying
of objects from PD to SA. Shares users/GPS tracks with the current OSM/SA.
 + is tightly within OSM
 - requires some work to create new tables for nodes/ways, but not as
demanding as option #1.
 - setting up requires support from OSM admins
 - manual work to copy PD objects to SA database

I think the option #3 is the best - it can be set up fairly quickly and it
is still tightly within OSM. The downside is that the OSM admins need to
approve the changes. It can be challenging, if you think how difficult it
was to  get a mailing list..

How do we proceed? Should we contact the admins and ask if #3 is doable or
should we just go on with #2??

- Kari

2008/11/10 Joseph Gentle <josephg at gmail.com>

> On Fri, Nov 7, 2008 at 1:35 AM, Sebastian Spaeth <sebastian at sspaeth.de>
> wrote:
> > Sunburned Surveyor wrote:
> >> I'm interested in a PD map for my portion of the world. I cruise over
> >> to the OSMPD data repository and see what is available. If there isn't
> >> enough data for my map, I break out my GPS receiver, if there is
> >> enough data: Woohoo!
> >> I really don't see a practical way to suck OSM SA data back into the
> >> public domain. Really the data flow can only go one direction:
> >
> >> OSM PD Mapper > PD Repository > OSM
> >
> > Yep, I think this is the only realistic expectation.
>
> We need a good map merging system. It may need to be human-assisted to
> resolve conflicts.
>
> -J
>
> > spaetz
> >
> > _______________________________________________
> > Legal-general mailing list
> > Legal-general at openstreetmap.org
> > http://lists.openstreetmap.org/listinfo/legal-general
> >
>
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