unsigned long long DBDirectClient::count(const string& ns,
const BSONObj& query,
int options,
int limit,
int skip) {
if (skip < 0) {
warning() << "setting negative skip value: " << skip
<< " to zero in query: " << query << endl;
skip = 0;
}
Lock::DBRead lk(_txn->lockState(), ns);
string errmsg;
int errCode;
long long res = runCount(_txn,
ns,
_countCmd(ns, query, options, limit, skip),
errmsg,
errCode);
if (res == -1) {
// namespace doesn't exist
return 0;
}
massert(errCode, str::stream() << "count failed in DBDirectClient: " << errmsg , res >= 0);
return (unsigned long long )res;
}
unsigned long long DBClientWithCommands::count(const string &myns, const BSONObj& query, int options, int limit, int skip ) {
NamespaceString ns(myns);
BSONObj cmd = _countCmd( myns , query , options , limit , skip );
BSONObj res;
if( !runCommand(ns.db.c_str(), cmd, res, options) )
uasserted(11010,string("count fails:") + res.toString());
return res["n"].numberLong();
}
unsigned long long DBDirectClient::count(const string &ns, const BSONObj& query, int options, int limit, int skip ) {
Lock::DBRead lk( ns );
string errmsg;
long long res = runCount( ns.c_str() , _countCmd( ns , query , options , limit , skip ) , errmsg );
if ( res == -1 )
return 0;
uassert( 13637 , str::stream() << "count failed in DBDirectClient: " << errmsg , res >= 0 );
return (unsigned long long )res;
}
unsigned long long DBDirectClient::count(const string &ns, const BSONObj& query, int options, int limit, int skip ) {
Lock::DBRead lk( ns );
string errmsg;
int errCode;
long long res = runCount( ns.c_str() , _countCmd( ns , query , options , limit , skip ) , errmsg, errCode );
if ( res == -1 ) {
// namespace doesn't exist
return 0;
}
massert( errCode , str::stream() << "count failed in DBDirectClient: " << errmsg , res >= 0 );
return (unsigned long long )res;
}
unsigned long long DBDirectClient::count(const string &ns, const BSONObj& query, int options, int limit, int skip ) {
if ( skip < 0 ) {
warning() << "setting negative skip value: " << skip
<< " to zero in query: " << query << endl;
skip = 0;
}
string errmsg;
int errCode;
LOCK_REASON(lockReason, "count");
Client::ReadContext ctx(ns, lockReason);
Client::Transaction transaction(DB_TXN_SNAPSHOT | DB_TXN_READ_ONLY);
long long res = runCount( ns.c_str() , _countCmd( ns , query , options , limit , skip ) , errmsg, errCode );
if ( res == -1 ) {
// namespace doesn't exist
return 0;
}
massert( errCode , str::stream() << "count failed in DBDirectClient: " << errmsg , res >= 0 );
transaction.commit();
return (unsigned long long )res;
}
