RasterAttributeIntFunction Class Reference

Inheritance diagram for RasterAttributeIntFunction:

Collaboration diagram for RasterAttributeIntFunction:

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

Member Function Documentation

attribute()

abstract Integer attribute ( GridCoverage  geom )

abstract

Reimplemented in TileGridYOffset, NumYTiles, NumBands, and MinTileX.

Referenced by RasterAttributeIntFunction.evaluate().

evaluate()

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

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

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

Referenced by MinTileXTest.testMinTileX(), NumBandsTest.testNumBands(), NumYTilesTest.testNumYTiles(), and TileGridYOffsetTest.testTileGridYOffset().