[Fedora-directory-users] Paged Results support?

[Ben]

Pierangelo Masarati wrote:
> Masato Taruishi wrote:
>   
>>> Rich Megginson wrote:
>>>       
>>>> Ben wrote:
>>>>         
>>>>> Rich Megginson wrote:
>>>>>           
>>>>>> Ben wrote:
>>>>>>             
>>>>>>> Rich Megginson wrote:
>>>>>>>               
>>>>>>>> Ben wrote:
>>>>>>>>                 
>>>>>>>>> Does FDS support Paged Results?
>>>>>>>>>                   
>>>>>>>> Fedora DS does not support the LDAPv3 Paged Results feature.  
>>>>>>>> Fedora DS does support VLV (Virtual List View) which can be used 
>>>>>>>> to page through many entries.  This is what the console refers to 
>>>>>>>> as a "Browsing Index".
>>>>>>>>                 
>>>>>>> Thanks for the info.
>>>>>>>
>>>>>>> OK, so how would i go about using VLV in 'perl' and 'php'?
>>>>>>>               
>>>>>> You can use Net::LDAP to create and parse the VLV controls using the 
>>>>>> Convert::ASN1 package.  Not sure about php.
>>>>>>             
>>>>> There is a "Net::LDAP::Control::VLV" perl module.  i have not been 
>>>>> able to get it work.  Is there some preparation that needs to be done 
>>>>> on the FDS server to allow/support it?
>>>>>           
>>>> Yes.  Check the documentation.  Not sure where it is documented 
>>>> though.  You have to configure it then use the db_index command to 
>>>> create the index.
>>>>         
>>>>>>> And how does that affect 'nss_ldap' with "nss_paged_results yes" 
>>>>>>> and "pagesize 1000" set?
>>>>>>>               
>>>>>> If the paged results control is not marked critical, fedora ds will 
>>>>>> ignore it.  So it will have no effect.
>>>>>>             
>>>>> I assume you mean in bugzilla?
>>>>>           
>>>> ? bugzilla ?
>>>>         
>>> Sorry i thought you were referring to getting paged support added to 
>>> FDS, what do you mean "If the paged results control is not marked 
>>> critical, fedora ds will ignore it." with reference to 'nss_ldap'?
>>>       
>> nss_ldap doesn't seem to set the criticality of the paged result
>> control:
>>
>>   rc = ldap_carete_page_control(__session.ls_conn,
>>                                 __session.ls_config->ldc_pagesize,
>>                                 NULL, 0, &serverCtrls[0]);
>>
>> which means fedora-ds just ignore the control.
>>     
>
> I don't think any client really needs that control.  The only reason
> many were forced into at least __knowing__ about it is that Active
> Directory returns pagedResults response even if not requested, in
> blatant violation of LDAPv3.  So both the users and the developers of
> FDS can safely ignore its existence.  Only client developers need to
> know about it if they want their clients to be able to interoperate with AD.
>
> p.
>   
If i recall correctly the reason i started using paged results was to 
exceed the 'sizelimit' restriction when i was using OpenLDAP.  i.e. if 
"sizelimit = 100" you could get 300 results using paged results.

So in relation to 'nss_ldap' isn't that what the "nss_paged_results yes" 
and "pagesize 1000" options are good for?  So with a directory of >2000 
users nss_ldap could get them all when the server has sizelimit set to 
say 1000.

Ben