public DbModel findDbModelFirst(DbModelSelector selector) throws DbException {
if (!tableIsExist(selector.getEntityType())) return null;
Cursor cursor = execQuery(selector.limit(1).toString());
if (cursor != null) {
try {
if (cursor.moveToNext()) {
return CursorUtils.getDbModel(cursor);
}
} catch (Throwable e) {
throw new DbException(e);
} finally {
IOUtils.closeQuietly(cursor);
}
}
return null;
}
