/*
* GeoTools - The Open Source Java GIS Toolkit
* http://geotools.org
*
* (C) 2011, Open Source Geospatial Foundation (OSGeo)
* (C) 2005, Open Geospatial Consortium Inc.
*
* All Rights Reserved. http://www.opengis.org/legal/
*/
package org.opengis.filter.spatial;
// Annotations
import org.opengis.annotation.XmlElement;
/**
* Abstract superclass for spatial operators that check that one shape satisfies
* some relation to a buffer around another shape. This could be used to find,
* for example, all the geometries that come within 10 meters of a river.
*
*
* @source $URL: http://svn.osgeo.org/geotools/branches/2.7.x/modules/library/opengis/src/main/java/org/opengis/filter/spatial/DistanceBufferOperator.java $
* @version <A HREF="http://www.opengis.org/docs/02-059.pdf">Implementation specification 1.0</A>
* @author Chris Dillard (SYS Technologies)
* @since GeoAPI 2.0
*/
@XmlElement("DistanceBufferType")
public interface DistanceBufferOperator extends BinarySpatialOperator {
/**
* Returns the buffer distance around the geometry that will be used when
* comparing features' geometries.
*/
@XmlElement("Distance")
double getDistance();
/**
* Gets the units of measure that can be used to interpret the distance
* value held by this object. An implementation may throw an exception if
* these units differ from the units of the coordinate system of its
* geometry or the feature's geometry.
*/
String getDistanceUnits();
}