[pybsddb] How to update partial key parameter in get function!

[Sury Soni]

Following text snippet is from oracle website for bdb.

 

When partial keys are specified to Berkeley DB, interfaces which
retrieve data items based on a user-specified key (for example, DB->get
<http://www.oracle.com/technology/documentation/berkeley-db/db/api_c/db_
get.html>  and DBcursor->get
<http://www.oracle.com/technology/documentation/berkeley-db/db/api_c/dbc
_get.html>  with the DB_SET
<http://www.oracle.com/technology/documentation/berkeley-db/db/api_c/dbc
_get.html#DB_SET>  flag), [[ will modify the user-specified key by
returning the actual key stored in the database ]].

 

http://www.oracle.com/technology/documentation/berkeley-db/db/ref/am_con
f/bt_compare.html

 

My curiosity is that, how can we return data from DB_get function while
updating partial key with actual returned key.

 

How can we update the passed parameter for key (keyobj) rather than
re-assigning new object using BuildValue_* functions?

 

Function from _bsddb.c file is:

 

static PyObject*

DB_get(DBObject* self, PyObject* args, PyObject* kwargs);

 

____________________________________
Sury Prakash Soni
Developer
____________________________________

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