Interface to Geophile to implement Z-order geospatial index and spatial joins.
A geospatial index stores 1-D Z-order values for 2-D points / shapes. Such an index can be joined with another index or a constant shape using a special spatial join algorithm.
For example, given an index on two numeric fields of a record type representing a location as latitude and longitude, a query can return all the records whose location is within some distance of given point. The join part of this execution is allowed to return more records than actually match, so, in general, there is a runtime check of the predicate even after the index scan.
| Package | Description |
|---|---|
| com.apple.foundationdb.record.spatial.common |
Common classes for (geo-)spatial queries.
|
| com.apple.foundationdb.record.spatial.geophile |
Classes for doing geospatial queries with Geophile.
|