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From Kiran Ayyagari <kayyag...@apache.org>
Subject Re: API behavior questions
Date Fri, 26 Jul 2013 03:57:22 GMT
On Fri, Jul 26, 2013 at 8:57 AM, Richard Sand <rsand@idfconnect.com> wrote:

> Thanks Emmanuel! What is the criteria for isSchemaAware=true? Is it just
> that a schema (any schema) was loaded, or that the objectclass of the
> object has at least one value in one of the loaded schema?
>
> just loading the schema is enough(all received entries will become schema
aware then)

> -----Original Message-----
> From: Emmanuel Lécharny [mailto:elecharny@gmail.com]
> Sent: Thursday, July 25, 2013 7:11 PM
> To: api@directory.apache.org
> Subject: Re: API behavior questions
>
> Le 7/26/13 12:01 AM, Richard Sand a écrit :
> > Hi all - I've a couple of quick questions I wanted to bounce off the
> list here, being new to the API, about the API behavior. Just want to make
> sure I do the proper amount of defensive programming...
> >
> > 1) Does LdapConnection.search(..) ever return null? My understanding is
> that if there are no results it'll still return a Cursor, but then
> Cursor.next() will return false.
> it should never return null.
> >
> > 2) Is there ever a condition where Entry.containsAttribute would return
> true, but a call to Entry.get() returned null?
> No. The thwo methdos are working on the same internal data structure (a
> Map of Attributes)
> >
> > 3) Is there ever a condition where Entry.getAttributes() returns null,
> as opposed to an empty collection?
> When the AttributeType allows you to store null value, then you can get a
> Value containing a null value. So, no, you can't get null.
> >
> > 4) Ditto for Attribute.iterator() - is it ever null, or will it always
> exist but sometimes just be empty?
> it's never null. But you can have no attribute to iterate on.
> >
> > 5) What needs to happen to have the results of calls to
> LdapConnection.search(..) return entries for which isSchemaAware is true?
> The LdapConnection must be schema aware itself.
>
> For that to happen, you just have to call the loadSchema() method :
>
> LdapConnection connection = new LdapNetworkConnection( "localhost", 389 );
> connection.loadSchema();
>
> Here, we will load the default schemas.
>
> You can use some specific schema by using :
>
> connection.loadSchema();
> connection.addSchema( "MySchema.schema" );
>
> where the "MySchema.schema" is a schema in OpenLDAP format.
>
> You can also use a SchemaLoader, but this get a bit too complex atm (and
> sadly, the associated method is not yet in the LdapConnection interface)
> >
> > 6) I'm assuming that when an entry is schemaAware, calls to
> isHumanReadable and getAttributeType will be populated per the schema?
>
> Yes, and all the controls on the Attribute values are done on the client
> side. This is extremelly interesting for comparison of values, etc.
>
>
>
> Sorry if some of those response are not accurate, I'm giving them from the
> top of my head. I hope I'm not too far from what the API is doing.
> All those thing would need to be documented...
>
> --
> Regards,
> Cordialement,
> Emmanuel Lécharny
> www.iktek.com
>
>
>
>


-- 
Kiran Ayyagari
http://keydap.com

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