RasterAttributeIntIntFunction Class Reference

Inheritance diagram for RasterAttributeIntIntFunction:

Collaboration diagram for RasterAttributeIntIntFunction:

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

Member Function Documentation

attribute()

abstract Integer attribute ( GridCoverage  geom, Integer  param  )

abstract

Reimplemented in ValidPixelCount, Band, and BandNoDataValue.

Referenced by RasterAttributeIntIntFunction.evaluate().

evaluate()

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

                                                                                                    {
        if (args.length != 2) {
                throw new ValueExprEvaluationException(getURI() + " requires exactly 2 arguments, 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 parameter = Integer.valueOf(args[1].stringValue());
                Integer result = attribute(geom,parameter);
                return valueFactory.createLiteral(result);
        }
        return null;
}

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

Referenced by BandTest.testBand(), and BandNoDataValueTest.testBandNoDataValue().