RowVal execSelect(DbExternalVariable dbev, Locator locator) throws SQLException, ExternalVariableModuleException {
RowKey rowkey = dbev.keyFromLocator(locator);
if (!rowkey.isComplete()) {
throw new IncompleteKeyException(rowkey.getMissing());
}
RowVal ret = dbev.new RowVal();
Connection conn = dbev.dataSource.getConnection();
try {