6.1. GeoTools Feature Types¶
A SimpleFeatureType defines a GeoTools schema, and consists of an array of well-known attributes. GeoMesa
supports all of the standard GeoTools attribute types, as well as some additional ones. When creating
a SimpleFeatureType for use in GeoMesa, be sure to use the provided classes, instead of the standard
GeoTools DataUtilities:
import org.locationtech.geomesa.utils.interop.SimpleFeatureTypes;
SimpleFeatureTypes.createType("example", "name:String,dtg:Date,*geom:Point:srid=4326");
import org.locationtech.geomesa.utils.geotools.SimpleFeatureTypes
SimpleFeatureTypes.createType("example", "name:String,dtg:Date,*geom:Point:srid=4326")
6.1.1. Available Types¶
| Attribute Type | Binding | Indexable |
|---|---|---|
| String | java.lang.String | Yes |
| Integer | java.lang.Integer | Yes |
| Double | java.lang.Double | Yes |
| Long | java.lang.Long | Yes |
| Float | java.lang.Float | Yes |
| Boolean | java.lang.Boolean | Yes |
| UUID | java.util.UUID | Yes |
| Date | java.util.Date | Yes |
| Timestamp | java.sql.Timestamp | Yes |
| Point | org.locationtech.jts.geom.Point | Yes |
| LineString | org.locationtech.jts.geom.LineString | Yes |
| Polygon | org.locationtech.jts.geom.Polygon | Yes |
| MultiPoint | org.locationtech.jts.geom.MultiPoint | Yes |
| MultiLineString | org.locationtech.jts.geom.MultiLineString | Yes |
| MultiPolygon | org.locationtech.jts.geom.MultiPolygon | Yes |
| GeometryCollection | org.locationtech.jts.geom.GeometryCollection | Yes |
| Geometry | org.locationtech.jts.geom.Geometry | Yes |
| List[A] | java.util.List<A> | Yes |
| Map[A,B] | java.util.Map<A, B> | No |
| Bytes | byte[] | No |
6.1.1.1. Notes¶
- Only a single geometry-type attribute may be indexed. It will be included in the primary spatial and spatio-temporal indices.
- The primary date-type attribute will be used in the spatio-temporal index. It may also be indexed separately in an attribute index.
- Non-geometry types (including dates) may be indexed as separate attribute indices. For details, see Attribute Index.
- Container types (List and Map) must be parameterized with non-container types from the above table.
- List types may be indexed, but querying a list type may be slow due to deduplication.