- All Known Subinterfaces:
- All Known Implementing Classes:
public interface Feature extends ComplexAttributeAn instance of
FeatureTyperepresenting a geographic feature composed of geometric and non-geometric properties.
Beyond being a complex attribute, a feature contains the following additional information:
- A default geometry. To be used when drawing when nothing more specific has been provided.
- The bounds of all the geometric attributes of the feature
- GeoAPI 2.2
- Jody Garnett (Refractions Research), Justin Deoliveira (The Open Planning Project)
- See Also:
All Methods Instance Methods Abstract Methods Modifier and Type Method Description
getBounds()The bounds of this Feature, if available.
getDefaultGeometryProperty()The default geometric attribute of the feature.
getIdentifier()A unique identifier for the feature.
getType()Override and type narrow to FeatureType.
setDefaultGeometryProperty(GeometryAttribute geometryAttribute)Sets the default geometric attribute of the feature.
Methods inherited from interface ComplexAttribute
getProperties, getProperties, getProperties, getProperty, getProperty, getValue, setValue, validate
FeatureType getType()Override and type narrow to FeatureType.
FeatureId getIdentifier()A unique identifier for the feature.
trueso this value must not return
Generation of the identifier is dependent on the underlying data storage medium. Often this identifier is not persistent. Mediums such shapefiles and database tables have "keys" built in which map naturally to persistent feature identifiers. But other mediums do not have such keys and may have to generate feature identifiers "on-the-fly". This means that client code being able to depend on this value as a persistent entity is dependent on which storage medium or data source is being used.
BoundingBox getBounds()The bounds of this Feature, if available.
This value is derived from any geometric attributes that the feature is composed of.
In the case that the feature has no geometric attributes this method should return an empty bounds, ie,
bounds.isEmpty() == true. This method should never return
The coordinate reference system of the returned bounds is derived from the geometric attributes which were used to compute the bounds. In the event that the feature contains multiple geometric attributes which have different crs's, the one defined by
#getGeometryDescriptor()should take precedence and the others should be reprojected accordingly.
- the feature bounds, possibly empty.
GeometryAttribute getDefaultGeometryProperty()The default geometric attribute of the feature.
This method returns
nullin the case where no such attribute exists.
- The default geometry attribute, or
void setDefaultGeometryProperty(GeometryAttribute geometryAttribute)Sets the default geometric attribute of the feature.
This value must be an attribute which is already defined for the feature. In other words, this method can not be used to add a new attribute to the feature.
geometryAttribute- The new geomtric attribute.
IllegalArgumentException- If the specified attribute is not already an attribute of the feature.