Application: gvSIG desktop

package org.gvsig.expressionevaluator.impl.function.spatial;

import org.apache.commons.lang3.Range;

import static org.gvsig.expressionevaluator.GeometryExpressionBuilderHelper.FUNCTION_ST_MAKEPOINT;

import org.gvsig.expressionevaluator.Interpreter;

import org.gvsig.expressionevaluator.spi.AbstractGeometryFunction;

import org.gvsig.fmap.geom.Geometry;

import org.gvsig.fmap.geom.GeometryUtils;

public class STMakePointFunction extends AbstractGeometryFunction {

    public STMakePointFunction() {

        super("OGC", FUNCTION_ST_MAKEPOINT, Range.between(2,4));

    }

    @Override

    public boolean allowConstantFolding() {

        return true;

    }

    @Override

    public Object call(Interpreter interpreter, Object[] args) throws Exception {

        double x = this.getDouble(args, 0);

        double y = this.getDouble(args, 1);

        Geometry geom;

        switch(args.length) {

            default:

            case 2:

                geom = GeometryUtils.createPoint(x, y);

                break;

            case 3:

                double z = this.getDouble(args, 2);

                geom = GeometryUtils.createPoint(x, y, z);

                break;

            case 4:

                z = this.getDouble(args, 2);

                double m = this.getDouble(args, 3);

                geom = GeometryUtils.createPoint(x, y, z, m);

                break;

        }

        return geom;

    }

}