Internal guts of retrieve, q.v. x can be anything; s must be a walkmap superstructure. TODO: recursive, quite likely to blow the fragile Clojure stack. Probably better to do this with walk, but I don’t yet understand that.

Return an id -> object map of every object within o. Internal to in-store, q.v. Use at your own peril.

Return a copy of o in which each reified walkmap object within o has been replaced with the :walkmap.id/id of that object. Internal to in-store, q.v. Use at your own peril.

Return a superstructure like s in which object o is indexed by vertex v. It is an error (and an exception may be thrown) if

1. s is not a map;
2. o is not a map;
3. o does not have a value for the key :walkmap.id/id;
4. v is not a vertex.

Return a superstructure like s in which object o is indexed by its vertices. It is an error (and an exception may be thrown) if

1. s is not a map;
2. o is not a map;
3. o does not have a value for the key :walkmap.id/id.

Search superstructure s for the nearest object matching filter-fn to the target vertex. Searches only with radius (slight misnomer, area actually searched is a cube). Returns one object, or nil if no matching object found.

WARNING: currently only returns objects which have a defined :centre (but most of the significant objects we have do).

Return a sequence of the ids all those objects in superstructure s which share at least one vertex with target, and which are matched by filter-fn if supplied.

Return a sequence of all those objects in superstructure s which share at least one vertex with target, and which are matched by filter-fn if supplied.

Retrieve the canonical representation of the object with this id from the superstructure s.

Search superstructure s for vertices within the box defined by vertices minv and maxv. Every coordinate in minv must have a lower value than the equivalent coordinate in maxv. If d2? is supplied and not false, search only in the x,y projection.

NOTE THAT this depends on the fact that vertices do not currently have properties which will be denormalised by store, and therefore do not have to restored with retrieve. If properties are added to vertices whose values are objects, then this will have to be rewritten.

Return a superstructure like s with object o added. If only one argument is supplied it will be assumed to represent o and a new superstructure will be returned.

It is an error (and an exception may be thrown) if

1. s is not a map;
2. o is not a recognisable walkmap object

Return a sequence of all objects in superstructure s which are indexed as touching the vertex v.

TODO: write docs

If o is an object with vertices, return those vertices, else nil.