Re: [OSGeo-Discuss] git like for geodata management
Just to add another option to the discussion, OGC has a Geosynchronization specification getting close to being finalize. It uses XML requests from the Web Feature Service - Transactional spec to describe actions on a spatial database such as add, modify, delete. Like CouchDB, it also doesn't specify what to do about conflict resolution. This has to be done with your software smarts. OGC® Loosely Coupled Synchronization of Geographic Databases in the Canadian Geospatial Data Infrastructure Pilot http://portal.opengeospatial.org/files/?artifact_id=26609 --- Raj On Sep 20, at 7:46 PM, Volker Mische wrote: On 20.09.2010 11:48, maning sambale wrote: Hi, Just something for brainstorming. Use case: 1. I get a subset of the data for field work for a couple of days. Coming back from field work, I sync the edits to the main data server. An application takes care of the merge like git does. 2. Two field workers, edit the same data on a different area. An application manages the conflict before merging to main data server. Hi, for the sync part you should have a look at CouchDB [1]. Though it doesn't do the hard part of resolving conflicts. This part would need to be coded. [1] http://couchdb.apache.org/ Cheers, Volker ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
Re: [OSGeo-Discuss] git like for geodata management
Any real world cases for this? Use case: 1. I get a subset of the data for field work for a couple of days. Coming back from field work, I sync the edits to the main data server. An application takes care of the merge like git does. 2. Two field workers, edit the same data on a different area. An application manages the conflict before merging to main data server. Hi, for the sync part you should have a look at CouchDB [1]. Though it doesn't do the hard part of resolving conflicts. This part would need to be coded. [1] http://couchdb.apache.org/ Cheers, Volker ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss -- cheers, maning -- Freedom is still the most radical idea of all -N.Branden wiki: http://esambale.wikispaces.com/ blog: http://epsg4253.wordpress.com/ -- ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
[OSGeo-Discuss] git like for geodata management
Hi, Just something for brainstorming. Use case: 1. I get a subset of the data for field work for a couple of days. Coming back from field work, I sync the edits to the main data server. An application takes care of the merge like git does. 2. Two field workers, edit the same data on a different area. An application manages the conflict before merging to main data server. -- cheers, maning -- Freedom is still the most radical idea of all -N.Branden wiki: http://esambale.wikispaces.com/ blog: http://epsg4253.wordpress.com/ -- ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
Re: [OSGeo-Discuss] git like for geodata management
Quite possible. What you want there is operation transformation (OT) - the same system google wave uses to do concurrent editing. Its an active research area, though to my knowledge nobody has implemented OT for geospacial data. (Though I haven't looked). Should be very doable - couple months if you know what you're doing and already had a map data editor. -J On Mon, Sep 20, 2010 at 7:48 PM, maning sambale emmanuel.samb...@gmail.com wrote: Hi, Just something for brainstorming. Use case: 1. I get a subset of the data for field work for a couple of days. Coming back from field work, I sync the edits to the main data server. An application takes care of the merge like git does. 2. Two field workers, edit the same data on a different area. An application manages the conflict before merging to main data server. -- cheers, maning -- Freedom is still the most radical idea of all -N.Branden wiki: http://esambale.wikispaces.com/ blog: http://epsg4253.wordpress.com/ -- ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
Re: [OSGeo-Discuss] git like for geodata management
On 20.09.2010 11:48, maning sambale wrote: Hi, Just something for brainstorming. Use case: 1. I get a subset of the data for field work for a couple of days. Coming back from field work, I sync the edits to the main data server. An application takes care of the merge like git does. 2. Two field workers, edit the same data on a different area. An application manages the conflict before merging to main data server. Hi, for the sync part you should have a look at CouchDB [1]. Though it doesn't do the hard part of resolving conflicts. This part would need to be coded. [1] http://couchdb.apache.org/ Cheers, Volker ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
Re: [OSGeo-Discuss] git like for geodata management
Use case: 1. I get a subset of the data for field work for a couple of days. Coming back from field work, I sync the edits to the main data server. An application takes care of the merge like git does. 2. Two field workers, edit the same data on a different area. An application manages the conflict before merging to main data server. Hi not sure about foss4g software, but Esri implemented since many years both this 2 features with disconnected editing [1] and versioning [2] best regards P [1] http://resources.esri.com/help/9.3/arcgisdesktop/com/gp_toolref/data_management_toolbox/an_overview_of_the_disconnected_editing_toolset.htm [2] http://webhelp.esri.com/arcgisdesktop/9.2/index.cfm?TopicName=Understanding_versioning -- Paolo Corti GIS specialist and web developer web: http://www.paolocorti.net twitter: @paolo_corti ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
Re: [OSGeo-Discuss] git like for geodata management
There is also discussion in Spatialite google group about synchronizing - Interaction and syncing between PostGIS and SpatiaLite. http://groups.google.com/group/spatialite-users/browse_thread/thread/737ba2c600b0a204 Noli On 9/21/10, Paolo Corti pco...@gmail.com wrote: Use case: 1. I get a subset of the data for field work for a couple of days. Coming back from field work, I sync the edits to the main data server. An application takes care of the merge like git does.in 2. Two field workers, edit the same data on a different area. An application manages the conflict before merging to main data server. Hi not sure about foss4g software, but Esri implemented since many years both this 2 features with disconnected editing [1] and versioning [2] best regards P [1] http://resources.esri.com/help/9.3/arcgisdesktop/com/gp_toolref/data_management_toolbox/an_overview_of_the_disconnected_editing_toolset.htm [2] http://webhelp.esri.com/arcgisdesktop/9.2/index.cfm?TopicName=Understanding_versioning ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
