SetGeometry Class Reference

Inheritance diagram for SetGeometry:

Collaboration diagram for SetGeometry:

Public Member Functions
String	getURI ()
Value	evaluate (ValueFactory valueFactory, Value... args) throws ValueExprEvaluationException

Protected Member Functions
Geometry	relation (Geometry g1, Geometry geom2, Integer value)

Member Function Documentation

evaluate()

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

inherited

                                                                                                            {
                if (args.length != 3) {
                        throw new ValueExprEvaluationException(getURI() + " requires exactly 3 arguments, got " + args.length);
                }
 
                Integer value=Integer.valueOf(args[2].stringValue());
                LiteralType l=LiteralRegistry.getLiteral(((Literal)args[0]).getDatatype().toString());
                LiteralType l2=LiteralRegistry.getLiteral(((Literal)args[1]).getDatatype().toString());
                if(l instanceof VectorLiteral && l2 instanceof VectorLiteral) {
                        Geometry geom=((VectorLiteral)l).read(args[0].stringValue());
                        Geometry geom2=((VectorLiteral)l2).read(args[1].stringValue());
                        Geometry transformed=LiteralUtils.transform(geom2, geom);
                        Geometry result = relation(geom,transformed,value);
                        return valueFactory.createLiteral(((VectorLiteral) l).unparse(result),((Literal)args[0]).getDatatype());
                }
                throw new ValueExprEvaluationException("Arguments given are not geometry literals");
        }

References LiteralRegistry.getLiteral(), GeometricModifierGeometryIntegerFunction.relation(), and LiteralUtils.transform().

Referenced by SetGeometryTest.testSetGeometry(), SetGeometryTest.testSetGeometryZ(), and SetRingTest.testSetRing().

getURI()

String getURI

(

)

                               {
                return POSTGIS.st_setGeometry.stringValue();
        }

References POSTGIS.st_setGeometry.

relation()

Geometry relation ( Geometry  g1, Geometry  geom2, Integer  value  )

protected

Reimplemented from GeometricModifierGeometryIntegerFunction.

                                                                                {
                GeometryFactory fac=new GeometryFactory();
                List<Geometry> geometries=new LinkedList<Geometry>();
                for(int i=0;i<g1.getNumGeometries();i++) {
                        if(value==i) {
                                geometries.add(geom2);
                        }else {
                                geometries.add(g1.getGeometryN(i));
                        }
                }
                return fac.createGeometryCollection(geometries.toArray(new Geometry[0]));
        }