Application: gvSIG desktop

package org.gvsig.expressionevaluator.impl.converstocode;

import java.util.Map;

import java.util.Objects;

import org.cresques.cts.IProjection;

import org.gvsig.expressionevaluator.Code;

import org.gvsig.expressionevaluator.CodeBuilder;

import org.gvsig.expressionevaluator.ConverterToCode;

import org.gvsig.expressionevaluator.ExpressionEvaluatorLocator;

import org.gvsig.expressionevaluator.ExpressionEvaluatorManager;

import org.gvsig.expressionevaluator.MutableCodes;

import org.gvsig.fmap.geom.Geometry;

/**

 *

 * @author jjdelcerro

 */

public class GeometryToCode implements ConverterToCode {

    @Override

    public String getName() {

        return "Geometry";

    }

    @Override

    public boolean isApplicable(Object... os) {

        return os[0] instanceof Geometry;

    }

    @Override

    public Code toCode(CodeBuilder builder, Object obj, Map props) {

        //ST_GEOMFROMTEXT

        try {

            if(obj == null){

                return null;

            }

            Geometry geom = (Geometry) obj;

            IProjection proj = geom.getProjection();

            if(proj == null){

                MutableCodes args = builder.args();

                args.add(builder.constant(geom.convertToWKT()));

                return builder.function("ST_GEOMFROMTEXT", args);

            }

            String abrev = geom.getProjection().getAbrev();

            String srid = abrev.split(":")[1];

            MutableCodes args = builder.args();

            args.add(builder.constant(geom.convertToWKT()));

            Code.Callable geomFromText = builder.function("ST_GEOMFROMTEXT", args);

            MutableCodes args2 = builder.args();

            args2.add(geomFromText);

            args2.add(builder.constant(Integer.valueOf(srid)));

            return builder.function("ST_SETSRID", args2);

        } catch (Exception ex) {

            throw new IllegalArgumentException("Can't convert geometry to code", ex);

        }

    }

    public static void selfRegister() {

        ExpressionEvaluatorManager manager = ExpressionEvaluatorLocator.getExpressionEvaluatorManager();

        manager.registerCodeConverter(new GeometryToCode());

    }

}