Application: gvSIG desktop

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

import org.apache.commons.lang3.Range;

import org.cresques.cts.IProjection;

import org.gvsig.expressionevaluator.Interpreter;

import org.gvsig.expressionevaluator.spi.AbstractFunction;

import org.gvsig.fmap.crs.CRSFactory;

import org.gvsig.fmap.geom.Geometry;

import org.gvsig.fmap.geom.GeometryLocator;

import org.gvsig.fmap.geom.GeometryManager;

public class STGeomFromWKBFunction extends AbstractFunction {

    public STGeomFromWKBFunction() {

        super("OGC", "ST_GeomFromWKB", Range.between(1,2));

    }

    @Override

    public boolean allowConstantFolding() {

        return true;

    }

    @Override

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

        GeometryManager geomManager = GeometryLocator.getGeometryManager();

        byte[] wkb = (byte[]) getObject(args, 0);

        Geometry r = geomManager.createFrom(wkb);

        if( args.length==2 ) {

            int code = getInt(args, 1);

            IProjection proj = CRSFactory.getCRS("EPSG:"+code);

            r.setProjection(proj);

        }

        return r;

    }

}