C++ DBClientConnection::update方法代码示例

void 
mime::Mongo::updateTFIDF(mongo::DBClientConnection &c, std::string &ns, const mongo::OID &oid, std::map<std::string, std::pair<float, float> > &tokens)
{
    c.update(ns, BSON("_id"<<oid), BSON("$unset"<<BSON("tf"<<1)));
    mongo::BSONArrayBuilder arrb;
    for(std::map<std::string, std::pair<float, float> >::iterator it=tokens.begin();it!=tokens.end();++it) 
    {
        std::pair<float, float> p = it->second;
        arrb.append(BSON("w"<<it->first<<"f"<<p.first<<"idf"<<p.second));
    }
    c.update(ns, BSON("_id"<<oid), BSON("$set"<<BSON("tf"<<arrb.arr())));
}

/**********************************************************
 *convert FileRec to bson, then write to db
 * 
***********************************************************/
void FileRec::writeToDB(mongo::DBClientConnection &conn) {
    BSONObjBuilder record; //build BSONObj
    record.append("filename", this->filename);
    record.append("Tempname", this->tempname);
    record.append("curhash", this->recentHash);
    record.append("ovhash", this->origHash);
    record.append("length", this->length);
    record.append("nversions", this->versionCount);
    /* love you */ long long time = this->modifytime.tv_nsec;
    record.append("Mtnsec", time);
    time = this->modifytime.tv_sec;
    record.append("mtsec", time);
    record.append("currentversion", this->refNum);

    mongo::BSONArrayBuilder bArr; //arrays to store multiple objects inside main object
    mongo::BSONArrayBuilder Comments;
    for (vector<string>::iterator it = blockhashes.begin(); it != blockhashes.end(); ++it) {
        bArr.append(*it);
    }

    for (vector<comment>::iterator it = comments.begin(); it != comments.end(); ++it) {
        BSONObjBuilder comment;
        comment.append("version", it->version); //
        comment.append("comment", it->comment);
        Comments.append(comment.obj());
    }

    if (!versions.empty()) { //if there are id's in the versions collection
        mongo::BSONArrayBuilder Version; //store the id's in an BSONarray
        for (vector<string>::iterator it = versions.begin(); it != versions.end(); ++it) {
            BSONObjBuilder version;
            version.append("id", (*it));
            Version.append(version.obj());
        }
        record.append("versionrec", Version.arr());
    }
    record.append("FileBlkHashes", bArr.arr()); //adding arrays to main record
    record.append("comments", Comments.arr());

    BSONObj result = record.obj();
    auto_ptr<mongo::DBClientCursor> cursor = conn.query("fileRecords.Filerec", MONGO_QUERY("filename" << filename));
    if (cursor->more()) {//already file rec in db so update
        conn.update("fileRecords.Filerec", MONGO_QUERY("filename" << filename), result);
    } else {
        conn.insert("fileRecords.Filerec", result); //must be new record 
    }
    string e = conn.getLastError();
    if (!e.empty()) {
        cout << "something failed failed: " << e << std::endl;
        sleep(1);
        exit(1);
    }
    else{
        cout << "record " << this->refNum << " successfully written to database" << endl;
    }
}

/**********************************************************
 *similar to writetodb in FileRec
 * 
***********************************************************/
void VersionRec::writeToDB(mongo::DBClientConnection& conn) {

    BSONObjBuilder record;

    if (this->versionid.empty()) { //if no id has been read in because it is a new version
        record.genOID();//create one
    } else {
        mongo::OID theoid(this->versionid); //use current id
        record.append("_id", theoid);
    }
    //convert to BSON
    record.append("Tempname", this->tmpname);
    record.append("filehash", this->filehash);
    record.append("length", this->length);
    record.append("Version", this->versionnumber);
    /* love you */ long long time = this->modifytime.tv_nsec;
    record.append("Mtnsec", time);
    time = this->modifytime.tv_sec;
    record.append("mtsec", time);

    mongo::BSONArrayBuilder Version;
    for (vector<VersionDiffBlock>::iterator it = changes.begin(); it != changes.end(); ++it) {
        BSONObjBuilder version;
        version.append("Blknum", (*it).blockNo);
        version.append("hash", (*it).blockHash);
        Version.append(version.obj());
    }
    record.append("Blktable", Version.arr());

    BSONObj result = record.obj();
    if (this->versionid.empty()) {
        mongo::BSONElement thing;
        result.getObjectID(thing);
        mongo::OID anoid = thing.OID();
        this->versionid = anoid.toString();
    }

    auto_ptr<mongo::DBClientCursor> cursor = conn.query("fileRecords.FileVersion", MONGO_QUERY("_id" << mongo::OID(this->versionid)));
    if (cursor->more()) {//already a version with same id, update
        conn.update("fileRecords.FileVersion", MONGO_QUERY("_id" << mongo::OID(this->versionid)), result);
    } else { //new version
        conn.insert("fileRecords.FileVersion", result);
    }

    string e = conn.getLastError();
    if (!e.empty()) {
        cout << "something failed failed: " << e << std::endl;
        sleep(1);
        exit(1);
    }
    else{
        cout << "Version " << this->versionnumber << " successfully written to database" << endl;
    }
}

void
ubcallback(void *mydata, int err, struct ub_result *result)
{
    if (err < 0)
        return;

    int *resolving = (int*)mydata;

    (*resolving)--;

    cout << *resolving << endl;

    if (result->havedata) {
        cdpi_dns dns_decoder;

        if (dns_decoder.decode((char*)result->answer_packet, result->answer_len)) {
            const std::list<cdpi_dns_rr> &answer = dns_decoder.get_answer();
            std::list<cdpi_dns_rr>::const_iterator it_ans;

            for (it_ans = answer.begin(); it_ans != answer.end(); ++it_ans) {
                // TODO: handle CNAME
                if (ntohs(it_ans->m_type) == 6 && ntohs(it_ans->m_class) == 1) {
                    ptr_cdpi_dns_soa p_soa = DNS_RDATA_TO_SOA(it_ans->m_rdata);

                    mongo::BSONObjBuilder b1, b2;
                    mongo::BSONObj obj;
                    mongo::Date_t  date;

                    get_epoch_millis(date);

                    b2.append("_id", it_ans->m_name);
                    b2.append("mname", p_soa->m_mname);
                    b2.append("rname", p_soa->m_rname);
                    b2.append("serial", p_soa->m_serial);
                    b2.append("refresh", p_soa->m_refresh);
                    b2.append("retry", p_soa->m_retry);
                    b2.append("expire", p_soa->m_expire);
                    b2.append("minimum", p_soa->m_minimum);
                    b2.append("date", date);

                    obj = b2.obj();

                    cout << obj.toString() << endl;

                    b1.append("_id", it_ans->m_name);

                    mongo_conn.update(http_soa, b1.obj(), obj, true);
                }
            }
        }
    }

    ub_resolve_free(result);
}