public class GeometryEditor
extends Object

A class which supports creating new Geometrys which are modifications of existing ones, maintaining the same type structure. Geometry objects are intended to be treated as immutable. This class "modifies" Geometrys by traversing them, applying a user-defined GeometryEditor.GeometryEditorOperation, GeometryEditor.CoordinateSequenceOperation or GeometryEditor.CoordinateOperation and creating new Geometrys with the same structure but (possibly) modified components.

Examples of the kinds of modifications which can be made are:

• the values of the coordinates may be changed. The editor does not check whether changing coordinate values makes the result Geometry invalid
• the coordinate lists may be changed (e.g. by adding, deleting or modifying coordinates). The modifed coordinate lists must be consistent with their original parent component (e.g. a LinearRing must always have at least 4 coordinates, and the first and last coordinate must be equal)
• components of the original geometry may be deleted (e.g. holes may be removed from a Polygon, or LineStrings removed from a MultiLineString). Deletions will be propagated up the component tree appropriately.

All changes must be consistent with the original Geometry's structure (e.g. a Polygon cannot be collapsed into a LineString). If changing the structure is required, use a GeometryTransformer.

This class supports creating an edited Geometry using a different GeometryFactory via the GeometryEditor(GeometryFactory) constructor. Examples of situations where this is required is if the geometry is transformed to a new SRID and/or a new PrecisionModel.

Usage Notes

• The resulting Geometry is not checked for validity. If validity needs to be enforced, the new Geometry's Geometry.isValid() method should be called.
• By default the UserData of the input geometry is not copied to the result.