HasNoBand Class Reference

Inheritance diagram for HasNoBand:

Collaboration diagram for HasNoBand:

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

Member Function Documentation

attribute()

Boolean attribute	(	GridCoverage	raster,
		Integer	noband
	)

Reimplemented from RasterAttributeBooleanIntFunction.

                                                                      {
                if(noband>raster.getSampleDimensions().size()) {
                        return false;
                }
                return true;
        }

evaluate()

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

inherited

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

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

Referenced by HasNoBandTest.testHasNoBandFalse(), and HasNoBandTest.testHasNoBandTrue().

getURI()

String getURI

(

)

                               {
                return POSTGIS.st_hasNoBand.stringValue();
        }

References POSTGIS.st_hasNoBand.