DXFDatatype Class Reference

WKTDatatype class allows the URI "geo:wktLiteral" to be used as a datatype and it will parse that datatype to a JTS Geometry. More...

Inheritance diagram for DXFDatatype:

Collaboration diagram for DXFDatatype:

Public Member Functions
String	unparse (Geometry geometry)
	This method Un-parses the JTS Geometry to the WKT literal. More...
Geometry	read (String geometryLiteral)
String	toString ()

Static Public Member Functions
static ArrayList< LineString >	readDXFLiteral (String literalContent) throws ParseException

Static Public Attributes
static final String	URI = POSTGIS.DXF
	The default WKT type URI. More...
static final DXFDatatype	INSTANCE = new DXFDatatype()
	A static instance of WKTDatatype. More...

Detailed Description

WKTDatatype class allows the URI "geo:wktLiteral" to be used as a datatype and it will parse that datatype to a JTS Geometry.

Req 10 All RDFS Literals of type geo:wktLiteral shall consist of an optional URI identifying the coordinate reference system followed by Simple Features Well Known Text (WKT) describing a geometric value. Valid geo:wktLiterals are formed by concatenating a valid, absolute URI as defined in [RFC 2396], one or more spaces (Unicode U+0020 character) as a separator, and a WKT string as defined in Simple Features [ISO 19125-1].

Req 11 The URI

<http://www.opengis.net/def/crs/OGC/1.3/CRS84> 

shall be assumed as the spatial reference system for geo:wktLiterals that do not * specify an explicit spatial reference system URI.

Member Function Documentation

read()

Geometry read

(

String

geometryLiteral

)

                                                 {
        return null;
            /*GeometryWrapper wrapper;
                try {
                        wrapper = GeometryWrapperFactory.createMultiLineString(readDXFLiteral(geometryLiteral), "<http://www.opengis.net/def/crs/EPSG/0/4326>", EncodedPolylineDatatype.URI);
                        return wrapper;
                } catch (ParseException e) {
                        // TODO Auto-generated catch block
                        throw new RuntimeException(e.getMessage());
                        
                }*/     
            
    }

readDXFLiteral()

static ArrayList<LineString> readDXFLiteral ( String  literalContent ) throws ParseException

static

                                                                                                     {
        ArrayList<LineString> lines = new ArrayList<>();
        Parser parser = ParserBuilder.createDefaultParser();
        InputStream targetStream = new ByteArrayInputStream(literalContent.getBytes());
        parser.parse(targetStream, DXFParser.DEFAULT_ENCODING);
        DXFDocument doc = parser.getDocument();
        List<DXFLine> lst = doc.getDXFLayer("layername").getDXFEntities(DXFConstants.ENTITY_TYPE_LINE);
        GeometryFactory fac=new GeometryFactory();
        for (int index = 0; index < lst.size(); index++) {
            Bounds bounds = lst.get(index).getBounds();
            Coordinate[] coords=new Coordinate[2];
            coords[0]=new Coordinate(bounds.getMinimumX(), bounds.getMinimumY());
            coords[1]=new Coordinate(bounds.getMaximumX(),bounds.getMaximumY());
            LineString ls=fac.createLineString(coords);
            lines.add(ls);
        }
        return lines;
    }

toString()

String toString

(

)

                             {
        return "DXFDatatype{" + URI + '}';
    }

unparse()

String unparse

(

Geometry

geometry

)

This method Un-parses the JTS Geometry to the WKT literal.

Parameters

geometry

- the JTS Geometry to be un-parsed

Returns

WKT - the returned WKT Literal.
Notice that the Spatial Reference System is not specified in returned WKT literal.

                                             {
            DXFDocument doc=new DXFDocument();
           return null;
            /*if(geom instanceof Point) {
                DXFPoint point=new DXFPoint();
                point.setX(((Point)geom).getX());
                point.setY(((Point)geom).getY());
                doc.add
            }else if(geom instanceof LineString) {
                DXFLine line=new DXFLine();
            }
            if(geometryWrapper.getXYGeometry().getGeometryType().equals("LineString")){
                return encodePolyline((LineString)geometryWrapper.getXYGeometry());             
            }else {
                throw new AssertionError("Object passed to EncodedPolylineDatatype is not a LineString: " + geometry);
            }
        } else {
            throw new AssertionError("Object passed to EncodedPolylineDatatype is not a GeometryWrapper: " + geometry);
        }*/
    }

Member Data Documentation

INSTANCE

final DXFDatatype INSTANCE = new DXFDatatype()

static

A static instance of WKTDatatype.

Referenced by LiteralRegistry.LiteralRegistry().

URI

final String URI = POSTGIS.DXF

static

The default WKT type URI.

Referenced by LiteralRegistry.LiteralRegistry().