C++ BSONElement::embeddedObjectUserCheck方法代码示例

        BSONObj stats() {
            if ( _http ) {
                HttpClient c;
                HttpClient::Result r;

                string url;
                {
                    stringstream ss;
                    ss << "http://" << _host;
                    if ( _host.find( ":" ) == string::npos )
                        ss << ":28017";
                    ss << "/_status";
                    url = ss.str();
                }

                if ( c.get( url , &r ) != 200 ) {
                    cout << "error (http): " << r.getEntireResponse() << endl;
                    return BSONObj();
                }

                BSONObj x = fromjson( r.getBody() );
                BSONElement e = x["serverStatus"];
                if ( e.type() != Object ) {
                    cout << "BROKEN: " << x << endl;
                    return BSONObj();
                }
                return e.embeddedObjectUserCheck();
            }
            BSONObj out;
            if ( ! conn().simpleCommand( _db , &out , "serverStatus" ) ) {
                cout << "error: " << out << endl;
                return BSONObj();
            }
            return out.getOwned();
        }

 intrusive_ptr<DocumentSource> DocumentSourceGeoNear::createFromBson(
         BSONElement elem,
         const intrusive_ptr<ExpressionContext> &pCtx) {
     intrusive_ptr<DocumentSourceGeoNear> out = new DocumentSourceGeoNear(pCtx);
     out->parseOptions(elem.embeddedObjectUserCheck());
     return out;
 }

    BSONObj ShardedCursor::concatQuery( const BSONObj& query , const BSONObj& extraFilter ){
        if ( ! query.hasField( "query" ) )
            return _concatFilter( query , extraFilter );
        
        BSONObjBuilder b;
        BSONObjIterator i( query );
        while ( i.more() ){
            BSONElement e = i.next();

            if ( strcmp( e.fieldName() , "query" ) ){
                b.append( e );
                continue;
            }
            
            b.append( "query" , _concatFilter( e.embeddedObjectUserCheck() , extraFilter ) );
        }
        return b.obj();
    }

        virtual bool run(const string& dbname, BSONObj& cmdObj, int x, string& errmsg, BSONObjBuilder& result, bool y) {
            static DBDirectClient db;

            if ( cmdObj["sort"].eoo() )
                return runNoDirectClient( dbname , cmdObj , x, errmsg , result, y );

            string ns = dbname + '.' + cmdObj.firstElement().valuestr();

            BSONObj origQuery = cmdObj.getObjectField("query"); // defaults to {}
            Query q (origQuery);
            BSONElement sort = cmdObj["sort"];
            if (!sort.eoo())
                q.sort(sort.embeddedObjectUserCheck());

            bool upsert = cmdObj["upsert"].trueValue();

            BSONObj fieldsHolder (cmdObj.getObjectField("fields"));
            const BSONObj* fields = (fieldsHolder.isEmpty() ? NULL : &fieldsHolder);

            Projection projection;
            if (fields) {
                projection.init(fieldsHolder);
                if (!projection.includeID())
                    fields = NULL; // do projection in post-processing
            }

            BSONObj out = db.findOne(ns, q, fields);
            if (out.isEmpty()) {
                if (!upsert) {
                    result.appendNull("value");
                    return true;
                }

                BSONElement update = cmdObj["update"];
                uassert(13329, "upsert mode requires update field", !update.eoo());
                uassert(13330, "upsert mode requires query field", !origQuery.isEmpty());
                db.update(ns, origQuery, update.embeddedObjectUserCheck(), true);

                BSONObj gle = db.getLastErrorDetailed(dbname);
                result.append("lastErrorObject", gle);
                if (gle["err"].type() == String) {
                    errmsg = gle["err"].String();
                    return false;
                }

                if (cmdObj["new"].trueValue()) {
                    BSONElement _id = gle["upserted"];
                    if (_id.eoo())
                        _id = origQuery["_id"];

                    out = db.findOne(ns, QUERY("_id" << _id), fields);
                }

            }
            else {

                if (cmdObj["remove"].trueValue()) {
                    uassert(12515, "can't remove and update", cmdObj["update"].eoo());
                    db.remove(ns, QUERY("_id" << out["_id"]), 1);

                    BSONObj gle = db.getLastErrorDetailed(dbname);
                    result.append("lastErrorObject", gle);
                    if (gle["err"].type() == String) {
                        errmsg = gle["err"].String();
                        return false;
                    }

                }
                else {   // update

                    BSONElement queryId = origQuery["_id"];
                    if (queryId.eoo() || getGtLtOp(queryId) != BSONObj::Equality) {
                        // need to include original query for $ positional operator

                        BSONObjBuilder b;
                        b.append(out["_id"]);
                        BSONObjIterator it(origQuery);
                        while (it.more()) {
                            BSONElement e = it.next();
                            if (strcmp(e.fieldName(), "_id"))
                                b.append(e);
                        }
                        q = Query(b.obj());
                    }

                    if (q.isComplex()) // update doesn't work with complex queries
                        q = Query(q.getFilter().getOwned());

                    BSONElement update = cmdObj["update"];
                    uassert(12516, "must specify remove or update", !update.eoo());
                    db.update(ns, q, update.embeddedObjectUserCheck());

                    BSONObj gle = db.getLastErrorDetailed(dbname);
                    result.append("lastErrorObject", gle);
                    if (gle["err"].type() == String) {
                        errmsg = gle["err"].String();
                        return false;
                    }

                    if (cmdObj["new"].trueValue())
//.........这里部分代码省略.........

        Config::Config( const string& _dbname , const BSONObj& cmdObj ) {

            dbname = _dbname;
            ns = dbname + "." + cmdObj.firstElement().valuestr();

            verbose = cmdObj["verbose"].trueValue();

            uassert( 13602 , "outType is no longer a valid option" , cmdObj["outType"].eoo() );

            if ( cmdObj["out"].type() == String ) {
                finalShort = cmdObj["out"].String();
                outType = REPLACE;
            }
            else if ( cmdObj["out"].type() == Object ) {
                BSONObj o = cmdObj["out"].embeddedObject();

                BSONElement e = o.firstElement();
                string t = e.fieldName();

                if ( t == "normal" || t == "replace" ) {
                    outType = REPLACE;
                    finalShort = e.String();
                }
                else if ( t == "merge" ) {
                    outType = MERGE;
                    finalShort = e.String();
                }
                else if ( t == "reduce" ) {
                    outType = REDUCE;
                    finalShort = e.String();
                }
                else if ( t == "inline" ) {
                    outType = INMEMORY;
                }
                else {
                    uasserted( 13522 , str::stream() << "unknown out specifier [" << t << "]" );
                }

                if (o.hasElement("db")) {
                    outDB = o["db"].String();
                }
            }
            else {
                uasserted( 13606 , "'out' has to be a string or an object" );
            }

            if ( outType != INMEMORY ) { // setup names
                tempLong = str::stream() << (outDB.empty() ? dbname : outDB) << ".tmp.mr." << cmdObj.firstElement().String() << "_" << finalShort << "_" << JOB_NUMBER++;

                incLong = tempLong + "_inc";

                finalLong = str::stream() << (outDB.empty() ? dbname : outDB) << "." << finalShort;
            }

            {
                // scope and code

                if ( cmdObj["scope"].type() == Object )
                    scopeSetup = cmdObj["scope"].embeddedObjectUserCheck();

                mapper.reset( new JSMapper( cmdObj["map"] ) );
                reducer.reset( new JSReducer( cmdObj["reduce"] ) );
                if ( cmdObj["finalize"].type() && cmdObj["finalize"].trueValue() )
                    finalizer.reset( new JSFinalizer( cmdObj["finalize"] ) );

                if ( cmdObj["mapparams"].type() == Array ) {
                    mapParams = cmdObj["mapparams"].embeddedObjectUserCheck();
                }

            }

            {
                // query options
                BSONElement q = cmdObj["query"];
                if ( q.type() == Object )
                    filter = q.embeddedObjectUserCheck();
                else
                    uassert( 13608 , "query has to be blank or an Object" , ! q.trueValue() );


                BSONElement s = cmdObj["sort"];
                if ( s.type() == Object )
                    sort = s.embeddedObjectUserCheck();
                else
                    uassert( 13609 , "sort has to be blank or an Object" , ! s.trueValue() );

                if ( cmdObj["limit"].isNumber() )
                    limit = cmdObj["limit"].numberLong();
                else
                    limit = 0;
            }
        }

            bool run(const char *ns, BSONObj& cmdObj, string& errmsg, BSONObjBuilder& result, bool){
                string dbname = cc().database()->name; // this has to come before dbtemprelease
                dbtemprelease temprelease; // we don't touch the db directly

                string shardedOutputCollection = cmdObj["shardedOutputCollection"].valuestrsafe();

                MRSetup mr( dbname , cmdObj.firstElement().embeddedObjectUserCheck() , false );
                
                set<ServerAndQuery> servers;
                
                BSONObjBuilder shardCounts;
                map<string,long long> counts;
                
                BSONObj shards = cmdObj["shards"].embeddedObjectUserCheck();
                vector< auto_ptr<DBClientCursor> > shardCursors;
                BSONObjIterator i( shards );
                while ( i.more() ){
                    BSONElement e = i.next();
                    string shard = e.fieldName();

                    BSONObj res = e.embeddedObjectUserCheck();
                    
                    uassert( 10078 ,  "something bad happened" , shardedOutputCollection == res["result"].valuestrsafe() );
                    servers.insert( shard );
                    shardCounts.appendAs( res["counts"] , shard.c_str() );

                    BSONObjIterator j( res["counts"].embeddedObjectUserCheck() );
                    while ( j.more() ){
                        BSONElement temp = j.next();
                        counts[temp.fieldName()] += temp.numberLong();
                    }

                }

                BSONObj sortKey = BSON( "_id" << 1 );

                ParallelSortClusteredCursor cursor( servers , dbname + "." + shardedOutputCollection ,
                                                    Query().sort( sortKey ) );
                
                
                auto_ptr<Scope> s = globalScriptEngine->getPooledScope( ns );
                ScriptingFunction reduceFunction = s->createFunction( mr.reduceCode.c_str() );
                ScriptingFunction finalizeFunction = 0;
                if ( mr.finalizeCode.size() )
                    finalizeFunction = s->createFunction( mr.finalizeCode.c_str() );

                BSONList values;

                result.append( "result" , mr.finalShort );

                DBDirectClient db;
                
                while ( cursor.more() ){
                    BSONObj t = cursor.next().getOwned();
                                        
                    if ( values.size() == 0 ){
                        values.push_back( t );
                        continue;
                    }
                    
                    if ( t.woSortOrder( *(values.begin()) , sortKey ) == 0 ){
                        values.push_back( t );
                        continue;
                    }
                    

                    db.insert( mr.tempLong , reduceValues( values , s.get() , reduceFunction , 1 , finalizeFunction ) );
                    values.clear();
                    values.push_back( t );
                }
                
                if ( values.size() )
                    db.insert( mr.tempLong , reduceValues( values , s.get() , reduceFunction , 1 , finalizeFunction ) );
                
                long long finalCount = mr.renameIfNeeded( db );
                log(0) << " mapreducefinishcommand " << mr.finalLong << " " << finalCount << endl;

                for ( set<ServerAndQuery>::iterator i=servers.begin(); i!=servers.end(); i++ ){
                    ScopedDbConnection conn( i->_server );
                    conn->dropCollection( dbname + "." + shardedOutputCollection );
                }
                
                result.append( "shardCounts" , shardCounts.obj() );
                
                {
                    BSONObjBuilder c;
                    for ( map<string,long long>::iterator i=counts.begin(); i!=counts.end(); i++ ){
                        c.append( i->first , i->second );
                    }
                    result.append( "counts" , c.obj() );
                }

                return 1;
            }