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Re: searching with back-sql (openldap-2.2.28) and mysql

On Mon, 2005-11-21 at 19:38 +0000, Seb James wrote:
> Here is the query which backsql_srch_query() contructs:
> SELECT DISTINCT ldap_entries.id,persons.id,'inetOrgPerson' AS objectClass,
> ldap_entries.dn AS dn FROM ldap_entries,persons 
> WHERE persons.id=ldap_entries.keyval 
> AND ldap_entries.oc_map_id=? 
> AND ldap_entries.dn LIKE ? 

this is NOT valid SQL, as far as I can tell.

> The problem is in the last line. I don't know enough sql to tell if this
> could be valid sql on another rdbms, but if I change the last line to
> AND (cn LIKE 'MITYA%')
> Then the query will run.

That's how it should be.

> I note that mysql isn't terribly well used with back-sql, or at least
> the maintainers of back-sql don't have enough time to test with mysql.
> Is there anything I can add to my metadata to have the 'cn' added to
> that search query, or do I need to hack backsql_srch_query() in search.c
> in the back-sql code?

I suggest you file an ITS.  You say (and it appears from the data) that
this happens with the examples that come with OpenLDAP; this definitely
looks like a bug, whether or not specific to (that version of) MySQL.

Unless you're using an "ancient" version (anything before 2.3.12 ;) you
should file an ITS <http://www.openldap.org/its/> and provide as many
details as possible about how to reproduce it (e.g. what search
parameters did you use?).

I'll note in advance that back-sql in OpenLDAP 2.2 is not maintained, as
it changed so much when moving to 2.3 that digging out issues would be a
real pain, unless they're really trivial.  OpenLDAP 2.3 comes with a
(yet limited) suite of tests that helps tracking issues and regessions;
you need to manually run it, as it requires some non-trivial work to
setup the RDBMS and the ODBC.


Ing. Pierangelo Masarati
Responsabile Open Solution

SysNet s.n.c.
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Email:    pierangelo.masarati@sys-net.it