TileWidth Class Reference

Inheritance diagram for TileWidth:

Collaboration diagram for TileWidth:

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

Member Function Documentation

attribute()

Double attribute

(

GridCoverage

raster

)

Reimplemented from RasterAttributeFunction.

                                                     {
                return (double) raster.render(raster.getGridGeometry().getExtent()).getTileWidth();
        }

evaluate()

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

inherited

                                                                                                            {
                if (args.length != 1) {
                        throw new ValueExprEvaluationException(getURI() + " requires exactly 1 arguments, got " + args.length);
                }
                System.out.println(((Literal)args[0]).getDatatype().toString());
                System.out.println(LiteralRegistry.getLiteral(((Literal)args[0]).getDatatype().toString()));
                LiteralType l=LiteralRegistry.getLiteral(((Literal)args[0]).getDatatype().toString());
                System.out.println(l);
                if(l instanceof RasterLiteral) {
                        GridCoverage geom=((RasterLiteral)l).read(args[0].stringValue());
                        //System.out.println("Extracted GridCoverage: "+geom);
                        Double result = attribute(geom);
                        return valueFactory.createLiteral(result);
                }
                return null;
        }

References RasterAttributeFunction.attribute(), and LiteralRegistry.getLiteral().

Referenced by ScaleXTest.testMinScaleX(), ScaleYTest.testMinScaleY(), SkewXTest.testMinTileX(), SkewYTest.testMinTileX(), MinTileYTest.testMinTileY(), NumXTilesTest.testNumXTiles(), HeightTest.testRasterHeight(), IsEmptyTest.testRasterIsEmptyFalse(), IsEmptyTest.testRasterIsEmptyTrue(), WidthTest.testRasterWidth(), ShearXTest.testShearX(), ShearYTest.testShearY(), TileGridXOffsetTest.testTileGridXOffset(), TileHeightTest.testTileHeight(), TileWidthTest.testTileHeight(), TranslateXTest.testTranslateX(), TranslateYTest.testTranslateY(), UpperLeftXTest.testUpperLeftX(), and UpperLeftYTest.testUpperLeftY().

getURI()

String getURI

(

)

                               {
                return POSTGIS.st_tileWidth.stringValue();
        }

References POSTGIS.st_tileWidth.