GeodeticDatum *GeodeticDatum::clone() const
{
GeodeticDatum *datum = new GeodeticDatum();
datum->name(name()) ;
datum->code(code());
datum->setDescription(description());
datum->_area = _area;
datum->_authority = _authority;
datum->_datumParams = _datumParams;
datum->_mode = _mode;
datum->_isValid = _isValid;
datum->_wkt = _wkt;
return datum;
}
GeodeticDatum *InternalIlwisObjectFactory::createDatum(const Resource& resource, const IOOptions &options) const {
QString query;
if ( resource.code() != sUNDEF) {
QString code = resource.code();
if ( code != "") {
query = QString("Select * from datum where code = '%1'").arg(code);
}
}
if ( resource["area"] != sUNDEF) {
QString name = resource.name();
QString area = resource["area"].toString();
query = QString("Select * from datum where name='%1' and area='%1'").arg(name, area);
}
if ( query == "")
return 0;
InternalDatabaseConnection db;
if (db.exec(query) && db.next()) {
GeodeticDatum *datum = new GeodeticDatum();
QSqlRecord rec = db.record();
datum->name(rec.field("name").value().toString());
datum->setDescription(rec.field("description").value().toString());
datum->setAuthority(rec.field("authority").value().toString());
datum->setArea(rec.field("area").value().toString());
datum->code(rec.field("code").value().toString());
QString ellips = rec.field("code").value().toString();
IEllipsoid ell;
QString ellres = QString("code=ellipsoid:%1").arg(ellips);
ell.prepare(ellres);
datum->set3TransformationParameters(rec.field("dx").value().toDouble(),
rec.field("dy").value().toDouble(),
rec.field("dz").value().toDouble(),
ell);
return datum;
}
return 0;
}