Module org.opengis.geoapi

Package org.opengis.filter

Interface SpatialOperator<R>

Type Parameters:

R - the type of resources (e.g. Feature) to filter.

All Superinterfaces:

Filter<R>, Predicate<R>

All Known Subinterfaces:

BinarySpatialOperator<R>, DistanceOperator<R>

@Classifier(ABSTRACT)
@UML(identifier="SpatialOperator",
     specification=ISO_19143)
public interface SpatialOperator<R>
extends Filter<R>

Operator that determines whether its geometric arguments satisfy the stated spatial relationship. The operator evaluates to true if the spatial relationship is satisfied. Otherwise, the operator evaluates to false. The nature of the comparison is dependent on the operator type.

This code list does not include the relationships involving a distance parameter. See DistanceOperatorName for "within" and "beyond a distance" operations.

Null operand

For all spatial operators in a filter expression, except

invalid @link

#DISJOINT

and

invalid @link

#BEYOND

, testing a pair of geometric values where one of the values evaluates to null, shall result in the expression evaluating to false indicating that the two geometries are disjoint. In the case of the

invalid @link

#DISJOINT

and

invalid @link

#BEYOND

operators, which test for disjointness, the expression shall evaluate to true.

Since:

3.1

Method Summary

Modifier and Type	Method	Description
CodeList<?>	getOperatorType()	Returns the nature of the operator.

Methods inherited from interface Filter

getExpressions, test

Methods inherited from interface Predicate

and, negate, or

Method Details

getOperatorType

CodeList<?> getOperatorType()

Returns the nature of the operator. The code list can be SpatialOperatorName or DistanceOperatorName, depending on the sub-interface.

Specified by:

getOperatorType in interface Filter<R>

Returns:

the nature of the operator.