Application: gvSIG desktop

/**

 * Every geometry operation that is registered dynamically must extend this class.<br>

 *

 * The following example shows how to implement and register a custom operation:

 *  

 * <pre>

 * public class MyOperation extends GeometryOperation {

 * 

 *   // Check GeometryManager for alternative methods to register an operation  

 *   public static final int OPERATION_INDEX = 

 *     GeometryManager.getInstance()

 *        .registerGeometryOperation("MyOperation", new MyOperation(), geomType);

 *   

 *   public Object invoke(Geometry geom, GeometryOperationContext ctx) throws GeometryOperationException {

 *        // Operation logic goes here

 *   }     

 *   

 *   public int getOperationIndex() {

 *      return OPERATION_INDEX;

 *   }

 *   

 * }

 * </pre>

 *

 * @author jiyarza

 *

 */

	/**

	 * Invokes this operation given the geometry and context 

	 * @param geom Geometry to which apply this operation

	 * @param ctx Parameter container

	 * @return Place-holder object that may contain any specific return value. 

	 * @throws GeometryOperationException The implementation is responsible to throw this exception when needed.

	 */

	/**

	 * Returns the constant value that identifies this operation and that was obtained upon registering it. 

	 * @return operation unique index 

	 */