So far the SQL logic used the information from the address field
to determine if an address is attached to a street or place.
This changes the logic to use the information provided in the
token_info. This allows sanitizers to enforce a certain parenting
without changing the visible address information.
Snapping a line to a point before splitting was meant to ensure
that the split point is really on the line. However, ST_Snap() does
not always behave well for this case. It may shorten the interpolation
line in some cases with the result that two points housenumbers
suddenly fall on the same point. It might also shorten the line down
to a single point which then makes ST_Split() crash.
Switch to a combination of ST_LineLocatePoint and ST_LineSubString
instead, which guarantees to keep the original geometry. Explicitly
handle the corner cases, where the split point falls on the beginning
or end of the line.
Add a special index that contains the place nodes buffered by their
respective area according to their search rank. This replaces the
maximum area search for place nodes and reduces drastically the number
of place nodes that need to be retrieved.
When a associatedStreet relation has multiple street members
always take the closest one. Avoid geometry operations for
the frequent case that there is only one street.
This makes Nominatim compatible with osm2pgsql's default update
modus operandi of deleting and reinserting data. Deletes are diverted
into a TODO table instead of executing them. When data is reinserted,
the corresponding entry in the TODO table is deleted. After updates are
finished, the remaining entries in the TODO table are executed, doing
the same work as the delete trigger did before.
The new behaviour also works against the gazetteer output with its
insert-only mechanism.
The values in the raster are already normalized between 0 and 2**16,
so a simple conversion to [0, 1] will do.
Check for existance of secondary_importance table statically when
creating the SQL function. For that to work importance tables need
to be created before the functions.
Adds partial indexes for all geometry queries used during import.
A full index is not necessary anymore at that point. Still create
the index afterwards for use in queries.
Also adds documentation for all indexes on where they are used.
The index over geometry_sectors are mainly used for ordering
the places which need indexing. That means they function effectively
as a TODO list. Consolodate them so that they always only contain
the places which are still to do. Also add the appropriate index
for the boundary indexing phase.
When deciding if an address interpolation has address information, only
look for addr:street and addr:place. If they are not there go looking
for the address on the address nodes. Ignores irrelevant tags like
addr:inclusion.
Fixes#2797.
When a boundary or place changes its address rank, all places where
it participates as address need to be potentially reindexed.
Also use the computed rank when testing place nodes against
boundaries. Boundaries are computed earlier.
Fixes#2794.
When shifting address ranks, the evaluation is always done against
unshifted address ranks on import because the objects we compare against
have not been indexed yet. This changes for updates when the object have
been touched in the meantime. To ensure consistent behaviour across
imports and updates, always use the unshifted address ranks.
Resolves a couple of situations where a mixed use of places areas and
administrative boundaries would result in a hierarchy that did not
properly respect the contains relation.
When taking over the address rank from a linked place, it needs
to be the originally computed rank, not the one that might have
been adjusted in the meantime. The adjustment was made under the
assumption that the node is not linked.
When moving the finding of linked places to the precomputation stage,
it was also moved before the statement where the linked_place_id was
removed from the linkee. The result was that the current linkee was
excluded when looking for a linked place on updates because it was
still linked to the boundary to be updated.
Fixed by allowing to either keep the linkage or change to an unlinked
place.
The fallback country boundaries already contain a sufficiently large
part of the water area, so there is no need to extend the country
assignment even more. Features outside countries should not show a
country in their address.
This is needed for pedestrian areas mapped as multipolygons
and consequently as relations. The lookup in placex guarantees
that the referenced OSM object is indeed a street.
Fixes#2669.
The inherited housenumber is needed for display output. We can't
take the one from the housenumber field because it is already
normalized. Remove the inherited address only when reindexing.
Fixes#2683.
For point features, keep using the distance to centroid.
For area features, add a tie breaker for the case where the
center point falls on the boundary.
Instead of computing the distance to the centroid of the area
compute the distance of the area to the centroid of the feature.
This means we give preference to the area that covers the centroid.
It's still a heuristics but one that is a bit less random.
