RasterAttributeFunction Class Reference

Inheritance diagram for RasterAttributeFunction:

Collaboration diagram for RasterAttributeFunction:

Public Member Functions
Value	evaluate (ValueFactory valueFactory, Value... args) throws ValueExprEvaluationException
abstract Double	attribute (GridCoverage geom)

Member Function Documentation

attribute()

abstract Double attribute ( GridCoverage  geom )

abstract

Reimplemented in Width, UpperLeftY, UpperLeftX, TranslateY, TranslateX, TileWidth, TileHeight, TileGridXOffset, SkewY, SkewX, ShearY, ShearX, ScaleY, ScaleX, NumXTiles, NumDataElements, NoDataPixelCount, MinTileY, Height, and MakeEmptyRaster.

Referenced by RasterAttributeFunction.evaluate().

evaluate()

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

                                                                                                            {
                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().