DWithin Class Reference

Inheritance diagram for DWithin:

Collaboration diagram for DWithin:

Public Member Functions
String	getURI ()
Boolean	relation (Value v1, Value v2, Integer distance)
Value	evaluate (ValueFactory valueFactory, Value... args) throws ValueExprEvaluationException

Static Public Member Functions
static Boolean	vectorOrRaster (Literal lit)
static Literal	getLiteral (Function func, Value v) throws ValueExprEvaluationException

Static Public Attributes
static Set< String >	rasterLiteralURIs =new TreeSet<String>()
static Set< String >	vectorLiteralURIs =new TreeSet<String>()

Member Function Documentation

evaluate()

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

inherited

                                                                                                            {
                // TODO Auto-generated method stub
                return null;
        }

getLiteral()

static Literal getLiteral ( Function  func, Value  v  ) throws ValueExprEvaluationException

staticinherited

                                                                                                     {
                if (!(v instanceof Literal)) {
                        throw new ValueExprEvaluationException("Invalid argument for " + func.getURI() + ": " + v);
                }
                Literal lit = (Literal) v;
                return lit;
        }

Referenced by DFullyWithin.relation(), and DWithin.relation().

getURI()

String getURI

(

)

                               {
                return POSTGIS.st_rast_DWithin.stringValue();
        }

References POSTGIS.st_rast_DWithin.

relation()

Boolean relation	(	Value	v1,
		Value	v2,
		Integer	distance
	)

Reimplemented from RasterVectorRelationIntBinaryFunction.

                                                                     {
                Literal lit1=getLiteral(this, v1);
                Literal lit2=getLiteral(this, v2);
                Boolean type=vectorOrRaster(getLiteral(this, v1));
                Boolean type2=vectorOrRaster(getLiteral(this, v2));
                if(type==null || type2==null) {
                        return null;
                }else if(type && type2) {
                        VectorLiteral vec1=(VectorLiteral) LiteralRegistry.getLiteral(lit1.getDatatype().toString());
                        VectorLiteral vec2=(VectorLiteral) LiteralRegistry.getLiteral(lit2.getDatatype().toString());
                        return vec1.read(v1.stringValue()).isWithinDistance(vec2.read(v2.stringValue()), distance);
                }else if(type && !type2) {
                        VectorLiteral vec1=(VectorLiteral) LiteralRegistry.getLiteral(lit1.getDatatype().toString());
                        RasterLiteral vec2=(RasterLiteral) LiteralRegistry.getLiteral(lit2.getDatatype().toString());
                        return vec1.read(v1.stringValue()).isWithinDistance(LiteralUtils.toGeometry(vec2.read(v2.stringValue()).getGridGeometry().getEnvelope()), distance);
                }else if(!type && type2) {
                        RasterLiteral vec1=(RasterLiteral) LiteralRegistry.getLiteral(lit1.getDatatype().toString());
                        VectorLiteral vec2=(VectorLiteral) LiteralRegistry.getLiteral(lit2.getDatatype().toString());
                        return LiteralUtils.toGeometry(((GridCoverage)vec1.read(v1.stringValue())).getGridGeometry().getEnvelope()).isWithinDistance(vec2.read(v2.stringValue()),distance);
                }else {
                        RasterLiteral vec1=(RasterLiteral) LiteralRegistry.getLiteral(lit1.getDatatype().toString());
                        RasterLiteral vec2=(RasterLiteral) LiteralRegistry.getLiteral(lit2.getDatatype().toString());
                        return LiteralUtils.toGeometry(((GridCoverage)vec1.read(v1.stringValue())).getGridGeometry().getEnvelope())
                                        .isWithinDistance(LiteralUtils.toGeometry(vec2.read(v2.stringValue()).getGridGeometry().getEnvelope()),distance);
                }
        }

References RasterVectorRelationIntBinaryFunction.getLiteral(), LiteralRegistry.getLiteral(), RasterLiteral.read(), VectorLiteral.read(), LiteralUtils.toGeometry(), and RasterVectorRelationIntBinaryFunction.vectorOrRaster().

vectorOrRaster()

static Boolean vectorOrRaster ( Literal  lit )

staticinherited

                                                          {
                if(LiteralRegistry.literals.containsKey(lit.getDatatype().toString())) {
                        LiteralType lite=LiteralRegistry.literals.get(lit.getDatatype().toString());
                        if(lite instanceof VectorLiteral) {
                                return true;
                        }else if(lite instanceof RasterLiteral) {
                                return false;
                        }
                }
                return null;
        }

References LiteralRegistry.literals.

Referenced by DFullyWithin.relation(), and DWithin.relation().

Member Data Documentation

rasterLiteralURIs

Set<String> rasterLiteralURIs =new TreeSet<String>()

staticinherited

vectorLiteralURIs

Set<String> vectorLiteralURIs =new TreeSet<String>()

staticinherited