org.deegree_impl.services.wfs.filterencoding
Class SpatialOperation

java.lang.Object
  org.deegree_impl.services.wfs.filterencoding.AbstractOperation
      org.deegree_impl.services.wfs.filterencoding.SpatialOperation

All Implemented Interfaces:

Operation

public class SpatialOperation

extends AbstractOperation

Encapsulates the information of a spatial_ops entity (as defined in the Filter DTD).

Version:

$Id: SpatialOperation.java,v 1.23 2004/03/12 15:56:48 poth Exp $

Author:

Markus Schneider, Luigi Marinucci

Field Summary

private double	distance
private GM_Object	geometryLiteral
private GMLGeometry	gmlGeometry
private PropertyName	propertyName

Fields inherited from class org.deegree_impl.services.wfs.filterencoding.AbstractOperation

operatorId

Constructor Summary

SpatialOperation(int operatorId, PropertyName propertyName, GMLGeometry gmlGeometry)
Constructs a new SpatialOperation.

SpatialOperation(int operatorId, PropertyName propertyName, GMLGeometry gmlGeometry, double d)
Constructs a new SpatialOperation.

Method Summary

static Operation	buildFromDOM(org.w3c.dom.Element element) Given a DOM-fragment, a corresponding Operation-object is built.
boolean	evaluate(Feature feature) Calculates the SpatialOperation's logical value based on the property values of the given Feature.
GM_Envelope	getBoundingBox() Deprecated. replaced by getGeometry()
double	getDistance() returns the distance for geo spatial comparsions such as DWithin or Beyond
GMLGeometry	getGeometry() Returns the geometry literal used in the operation.
GM_Object	getGeometryLiteral() Returns the geometry literal used in the operation.
GM_Object	getGeometryProperty(Feature feature) Returns the geometry property used in the operation and one concrete feature.
PropertyName	getPropertyName() returns the name of the (spatial) property that shall be use for geo spatial comparsions
java.lang.StringBuffer	toXML() Produces an indented XML representation of this object.

Methods inherited from class org.deegree_impl.services.wfs.filterencoding.AbstractOperation

getOperatorId, getOperatorName

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

gmlGeometry

private GMLGeometry gmlGeometry

geometryLiteral

private GM_Object geometryLiteral

propertyName

private PropertyName propertyName

distance

private double distance

Constructor Detail

SpatialOperation

public SpatialOperation(int operatorId,
                        PropertyName propertyName,
                        GMLGeometry gmlGeometry)

Constructs a new SpatialOperation.

See Also:

OperationDefines

SpatialOperation

public SpatialOperation(int operatorId,
                        PropertyName propertyName,
                        GMLGeometry gmlGeometry,
                        double d)

Constructs a new SpatialOperation.

See Also:

Calvin added on 10/21/2003

Method Detail

getDistance

public double getDistance()

returns the distance for geo spatial comparsions such as DWithin or Beyond

Returns:

the distance for geo spatial comparsions such as DWithin or Beyond

buildFromDOM

public static Operation buildFromDOM(org.w3c.dom.Element element)
                              throws FilterConstructionException

Given a DOM-fragment, a corresponding Operation-object is built. This method recursively calls other buildFromDOM () - methods to validate the structure of the DOM-fragment.

Throws:

FilterConstructionException - if the structure of the DOM-fragment is invalid

getGeometryProperty

public GM_Object getGeometryProperty(Feature feature)
                              throws FilterEvaluationException

Returns the geometry property used in the operation and one concrete feature.

Parameters:

feature -

Returns:

the property as a GM_Object-object.

Throws:

FilterEvaluationException - if the PropertyName does not denote a GM_Object

getGeometryLiteral

public GM_Object getGeometryLiteral()
                             throws FilterEvaluationException

Returns the geometry literal used in the operation.

Returns:

the literal as a GM_Object-object.

Throws:

FilterEvaluationException - if the Literal can not be converted to a GM_Object

getGeometry

public GMLGeometry getGeometry()

Returns the geometry literal used in the operation.

Returns:

the literal as a GMLGeometry-object.

getBoundingBox

public GM_Envelope getBoundingBox()

Deprecated. replaced by getGeometry()

Returns the (bounding) box of a BBOX operation.

getPropertyName

public PropertyName getPropertyName()

returns the name of the (spatial) property that shall be use for geo spatial comparsions

toXML

public java.lang.StringBuffer toXML()

Produces an indented XML representation of this object.

evaluate

public boolean evaluate(Feature feature)
                 throws FilterEvaluationException

Calculates the SpatialOperation's logical value based on the property values of the given Feature.

TODO: Implement operations: CROSSES, BEYOND, OVERLAPS AND TOUCHES.

Parameters:

feature - that determines the property values

Returns:

true, if the SpatialOperation evaluates to true, else false

Throws:

FilterEvaluationException - if the evaluation fails