How to retrieve vCard in xmpp , which delegate method and flow is use for get vCard in cocoa os x app? - objective-c

Question

I have implement xmpp framework in my cocoa os x application. currently am working on vCard. i have done work on set all required field's data of login user and it stored successfully, but i have no proper solution for how to get login user's stored vcard and am not aware of it. Please give me solution for this problem. i have been suffering for this from last 3 days. help me as soon as
Thanx in advance
i have used below code to set vCard field
dispatch_queue_t queue = dispatch_queue_create("queue", DISPATCH_QUEUE_PRIORITY_DEFAULT);
dispatch_async(queue, ^
{
XMPPvCardCoreDataStorage *xmppvCardStorage = [XMPPvCardCoreDataStorage sharedInstance];
XMPPvCardTempModule *xmppvCardTempModule = [[XMPPvCardTempModule alloc] initWithvCardStorage:xmppvCardStorage];
[xmppvCardTempModule activate:[self xmppStream]];
XMPPvCardTemp *myvCardTemp = [xmppvCardTempModule myvCardTemp];
if (!myvCardTemp)
{
NSXMLElement *vCardXML = [NSXMLElement elementWithName:#"vCard" xmlns:#"vcard-temp"];
XMPPvCardTemp *newvCardTemp = [XMPPvCardTemp vCardTempFromElement:vCardXML];
[newvCardTemp setName:#"vCard"];
[newvCardTemp setNickname:lbl.stringValue];
[newvCardTemp setFormattedName:#"abc"];
[newvCardTemp setDesc:lbl_abt.stringValue];
[xmppvCardTempModule updateMyvCardTemp:newvCardTemp];
}
else
{
[myvCardTemp setName:#"vCard"];
[myvCardTemp setNickname:lbl.stringValue];
[myvCardTemp setFormattedName:#"abc"];
[myvCardTemp setDesc:lbl_abt.stringValue];
[xmppvCardTempModule updateMyvCardTemp:myvCardTemp];
}
});
}
And i also tried below code to retrieve vCard
/* XMPPvCardTempModule *xmppvCardTempModule;
XMPPvCardTemp *vCard =[xmppvCardTempModule vCardTempForJID:[XMPPJID jidWithString:#"xxxx"] shouldFetch:YES];
NSLog(#"V CARD :%#",vCard.nickname);*/
XMPPvCardCoreDataStorage* xmppvCardStorage = [XMPPvCardCoreDataStorage sharedInstance];
XMPPvCardTempModule* m = [[XMPPvCardTempModule alloc]initWithvCardStorage:xmppvCardStorage];
[m fetchvCardTempForJID:[XMPPJID jidWithString:#"xxxx"]ignoreStorage:YES];
NSLog(#"%#",xmppvCardStorage.description);
Please suggest me proper way to solve this problem :