IsInCRSAreaOfValidity Class Reference

Inheritance diagram for IsInCRSAreaOfValidity:

Collaboration diagram for IsInCRSAreaOfValidity:

Public Member Functions
String	getURI ()
boolean	operation (Geometry geom, CoordinateReferenceSystem crs)
Value	evaluate (ValueFactory valueFactory, Value... args) throws ValueExprEvaluationException

Member Function Documentation

evaluate()

Value evaluate ( ValueFactory  valueFactory, Value...  args  ) throws ValueExprEvaluationException

inherited

                                                                                                            {
                if (args.length != 2) {
                        throw new ValueExprEvaluationException(getURI() + " requires exactly 2 arguments, got " + args.length);
                }
                
                LiteralType l=LiteralRegistry.getLiteral(((Literal)args[0]).getDatatype().toString());
                Integer srid=Integer.valueOf(args[1].stringValue());
                if(l instanceof VectorLiteral) {
                        Geometry geom=((VectorLiteral)l).read(args[0].stringValue());
                        boolean result;
                        try {
                                result = operation(geom,CRS.forCode("EPSG:"+srid));
                                return valueFactory.createLiteral(result);
                        } catch (FactoryException e) {
                                // TODO Auto-generated catch block
                                e.printStackTrace();
                                return null;
                        }
        
                }
                throw new ValueExprEvaluationException("Arguments given are not geometry literals");
        }

References LiteralRegistry.getLiteral(), and GeometricBinaryCRSAttributeFunction.operation().

Referenced by IsInCRSAreaOfValidityTest.testIsInCRSAreaOfValidityFalse(), and IsInCRSAreaOfValidityTest.testIsInCRSAreaOfValidityTrue().

getURI()

String getURI

(

)

                               {
                return POSTGIS.st_isInCRSAreaOfValidity.stringValue();
        }

References POSTGIS.st_isInCRSAreaOfValidity.

operation()

boolean operation	(	Geometry	geom,
		CoordinateReferenceSystem	crs
	)

Reimplemented from GeometricBinaryCRSAttributeFunction.

                                                                               {
                CoordinateSystemAxis x = crs.getCoordinateSystem().getAxis(0);
            CoordinateSystemAxis y = crs.getCoordinateSystem().getAxis(1);
            boolean xUnbounded = Double.isInfinite(x.getMinimumValue()) && Double.isInfinite(x.getMaximumValue());
        boolean yUnbounded = Double.isInfinite(y.getMinimumValue()) && Double.isInfinite(y.getMaximumValue());
        if (xUnbounded && yUnbounded) {
            return false;
        }
        Coordinate[] c = geom.getCoordinates();
        for (int i = 0; i < c.length; i++) {
            if (!xUnbounded && ((c[i].x < x.getMinimumValue()) || (c[i].x > x.getMaximumValue()))) {
                return false;
            }
            if (!yUnbounded && ((c[i].y < y.getMinimumValue()) || (c[i].y > y.getMaximumValue()))) {
                return false;
            }
        }
                return true;
        }