TileGridYOffset Class Reference

Inheritance diagram for TileGridYOffset:

Collaboration diagram for TileGridYOffset:

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

Member Function Documentation

attribute()

Integer attribute

(

GridCoverage

raster

)

Reimplemented from RasterAttributeIntFunction.

                                                      {
                return raster.render(raster.getGridGeometry().getExtent()).getTileGridYOffset();
        }

evaluate()

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

inherited

                                                                                                    {
        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().

getURI()

String getURI

(

)

                               {
                return POSTGIS.st_tileGridYOffset.stringValue();
        }

References POSTGIS.st_tileGridYOffset.