Migration: How to Migrate Spatial from 3.x
Spatial functionality has been merged into RQL. To reflect that change, the Client API has integrated this feature into the session.Query and session.Advanced.DocumentQuery. The following migration samples will focus on the session.Query - the most common and recommended way of interaction with querying capabilities on RavenDB.
Namespaces
| 3.x |
using Raven.Abstractions.Indexing;
using Raven.Client.Document;
|
| 4.0 |
using Raven.Client.Documents;
using Raven.Client.Documents.Indexes.Spatial;
|
Example I - Index
The following changes have been applied:
- All spatial fields must be created using the
CreateSpatialField method
- No support for GeoJSON and other non-standard formats
- No support for spatial clustering
| 3.x |
private class SpatialDoc_ByShapeAndPoint : AbstractIndexCreationTask<SpatialDoc>
{
public SpatialDoc_ByShapeAndPoint()
{
Map = docs => from spatial in docs
select new
{
Shape = spatial.Shape,
Point = spatial.Point,
_ = SpatialGenerate("Coordinates", spatial.Point.Latitude, spatial.Point.Longitude),
_ = SpatialClustering("Clustering", spatial.Point.Latitude, spatial.Point.Longitude)
};
Spatial(x => x.Shape, options => options.Geography.Default());
Spatial(x => x.Point, options => options.Cartesian.BoundingBoxIndex());
}
}
|
| 4.0 |
private class SpatialDoc_ByShapeAndPoint : AbstractIndexCreationTask<SpatialDoc>
{
public SpatialDoc_ByShapeAndPoint()
{
Map = docs => from spatial in docs
select new
{
Shape = CreateSpatialField(spatial.Shape.Wkt),
Point = CreateSpatialField(spatial.Point.Latitude, spatial.Point.Longitude),
Coordinates = CreateSpatialField(spatial.Point.Latitude, spatial.Point.Longitude)
};
Spatial(x => x.Shape, options => options.Geography.Default());
Spatial(x => x.Point, options => options.Cartesian.BoundingBoxIndex());
}
}
|
Example II - RelatesToShape
| 3.x |
List<SpatialDoc> results = session
.Query<SpatialDoc, SpatialDoc_ByShapeAndPoint>()
.Customize(x => x
.RelatesToShape(
"Shape",
"Circle(32.1234 23.4321 d=10.0000)",
SpatialRelation.Within))
.ToList();
|
| 4.0 |
List<SpatialDoc> results = session
.Query<SpatialDoc, SpatialDoc_ByShapeAndPoint>()
.Spatial(
x => x.Shape,
criteria => criteria
.RelatesToShape(
"Circle(32.1234 23.4321 d=10.0000)",
SpatialRelation.Within))
.ToList();
|
Example III - WithinRadiusOf
| 3.x |
List<SpatialDoc> results = session
.Query<SpatialDoc, SpatialDoc_ByShapeAndPoint>()
.Customize(x => x
.WithinRadiusOf("Shape", 10, 32.1234, 23.4321))
.ToList();
|
| 4.0 |
List<SpatialDoc> results = session
.Query<SpatialDoc, SpatialDoc_ByShapeAndPoint>()
.Spatial(
x => x.Shape,
criteria => criteria
.WithinRadius(10, 32.1234, 23.4321))
.ToList();
|
Example IV - SortByDistance
| 3.x |
List<SpatialDoc> results = session
.Query<SpatialDoc, SpatialDoc_ByShapeAndPoint>()
.Customize(x => x.SortByDistance())
.Spatial(
x => x.Shape,
criteria => criteria
.WithinRadiusOf(10, 32.1234, 23.4321))
.ToList();
|
| 4.0 |
List<SpatialDoc> results = session
.Query<SpatialDoc, SpatialDoc_ByShapeAndPoint>()
.Spatial(
x => x.Shape,
criteria => criteria
.WithinRadius(10, 32.1234, 23.4321))
.OrderByDistance(x => x.Shape, 32.1234, 23.4321)
.ToList();
|