public interface Feature extends ComplexAttribute
FeatureTyperepresenting a geographic feature composed of geometric and non-geometric properties.
Beyond being a complex attribute, a feature contains the following additional information:
|Modifier and Type||Method and Description|
The bounds of this Feature, if available.
The default geometric attribute of the feature.
A unique identifier for the feature.
Override and type narrow to FeatureType.
Sets the default geometric attribute of the feature.
getProperties, getProperties, getProperties, getProperty, getProperty, getValue, setValue, validate
getType().isIdentifiable() must return
so 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.
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
take precedence and the others should be reprojected accordingly.
This method returns
null in the case where no such
void setDefaultGeometryProperty(GeometryAttribute geometryAttribute)
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.
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