[OSM-dev] Edit question with respect to JOSM changeset representation

[Thomas Emge]

Let's assume I have the following situation:


   Node1 X----------X Node 2                                 -- > way 1 sidewalk
   Node1 X----------X Node 2     Node3 X-----------X Node 4  -- > relation 1 route (way1, way2)
             (way1)                         (way2)


Which could be written in the following pseudo osm representation:

<node id=1>
<node id=2>
<node id=3>
<node id=4>
<way id=1>
  <nd ref=1>
  <nd ref=2>
  <tag sidewalk>
<way id=2>
  <nd ref=3>
  <nd ref=4>
<relation id=1>
  <member type=way ref=1>
  <member type=way ref=2>
  <tag scenic route>

Then the user goes ahead and deletes the sidewalk feature meaning deleting way1. What happens to the relation1 and how is the modification expressed in the changeset of the JOSM file format?

Is it:

<way id=1 action=delete>

Or

<way id=1 action=delete>
<relation id=1 action=modify>
  <member type=way ref=2>
  <tag scenic route>

Or

<node id=1 action=delete>
<node id=2 action=delete> (which would make way1 being deleted but what about relation1?)

Or

???

At what level (node/way/relation) do I need to apply the action and how does it affect other connected entities?

Thanks,


-   Thomas







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