C++ BSONObj::removeField方法代码示例

OpMsgRequest upconvertRequest(StringData db, BSONObj cmdObj, int queryFlags) {
    cmdObj = cmdObj.getOwned();  // Usually this is a no-op since it is already owned.

    auto readPrefContainer = BSONObj();
    const StringData firstFieldName = cmdObj.firstElementFieldName();
    if (firstFieldName == "$query" || firstFieldName == "query") {
        // Commands sent over OP_QUERY specify read preference by putting it at the top level and
        // putting the command in a nested field called either query or $query.

        // Check if legacyCommand has an invalid $maxTimeMS option.
        uassert(ErrorCodes::InvalidOptions,
                "cannot use $maxTimeMS query option with commands; use maxTimeMS command option "
                "instead",
                !cmdObj.hasField("$maxTimeMS"));

        if (auto readPref = cmdObj["$readPreference"])
            readPrefContainer = readPref.wrap();

        cmdObj = cmdObj.firstElement().Obj().shareOwnershipWith(cmdObj);
    } else if (auto queryOptions = cmdObj["$queryOptions"]) {
        // Mongos rewrites commands with $readPreference to put it in a field nested inside of
        // $queryOptions. Its command implementations often forward commands in that format to
        // shards. This function is responsible for rewriting it to a format that the shards
        // understand.
        readPrefContainer = queryOptions.Obj().shareOwnershipWith(cmdObj);
        cmdObj = cmdObj.removeField("$queryOptions");
    }

    if (!readPrefContainer.isEmpty()) {
        cmdObj = BSONObjBuilder(std::move(cmdObj)).appendElements(readPrefContainer).obj();
    } else if (!cmdObj.hasField("$readPreference") && (queryFlags & QueryOption_SlaveOk)) {
        BSONObjBuilder bodyBuilder(std::move(cmdObj));
        ReadPreferenceSetting(ReadPreference::SecondaryPreferred).toContainingBSON(&bodyBuilder);
        cmdObj = bodyBuilder.obj();
    }

    // Try to move supported array fields into document sequences.
    auto docSequenceIt = docSequenceFieldsForCommands.find(cmdObj.firstElementFieldName());
    auto docSequenceElem = docSequenceIt == docSequenceFieldsForCommands.end()
        ? BSONElement()
        : cmdObj[docSequenceIt->second];
    if (!isArrayOfObjects(docSequenceElem))
        return OpMsgRequest::fromDBAndBody(db, std::move(cmdObj));

    auto docSequenceName = docSequenceElem.fieldNameStringData();

    // Note: removing field before adding "$db" to avoid the need to copy the potentially large
    // array.
    auto out = OpMsgRequest::fromDBAndBody(db, cmdObj.removeField(docSequenceName));
    out.sequences.push_back({docSequenceName.toString()});
    for (auto elem : docSequenceElem.Obj()) {
        out.sequences[0].objs.push_back(elem.Obj().shareOwnershipWith(cmdObj));
    }
    return out;
}

    void IndexRebuilder::retryIndexBuild(const std::string& dbName,
                                         NamespaceDetails* nsd,
                                         const int index) {
        // details.info is always a valid system.indexes entry because DataFileMgr::insert journals
        // creating the index doc and then insert_makeIndex durably assigns its DiskLoc to info.
        // indexBuildsInProgress is set after that, so if it is set, info must be set.
        IndexDetails& details = nsd->idx(index);

        // First, clean up the in progress index build.  Save the system.indexes entry so that we
        // can add it again afterwards.
        BSONObj indexObj = details.info.obj().getOwned();

        // Clean up the in-progress index build
        getDur().writingInt(nsd->indexBuildsInProgress) -= 1;
        details.kill_idx();
        // The index has now been removed from system.indexes, so the only record of it is in-
        // memory. If there is a journal commit between now and when insert() rewrites the entry and
        // the db crashes before the new system.indexes entry is journalled, the index will be lost
        // forever.  Thus, we're assuming no journaling will happen between now and the entry being
        // re-written.

        // We need to force a foreground index build to prevent replication from replaying an
        // incompatible op (like a drop) during a yield.
        // TODO: once commands can interrupt/wait for index builds, this can be removed.
        indexObj = indexObj.removeField("background");

        try {
            const std::string ns = dbName + ".system.indexes";
            theDataFileMgr.insert(ns.c_str(), indexObj.objdata(), indexObj.objsize(), false, true);
        }
        catch (const DBException& e) {
            log() << "Rebuilding index failed: " << e.what() << " (" << e.getCode() << ")"
                  << endl;
        }
    }

StatusWith<BSONObj> validateIndexSpecCollation(OperationContext* opCtx,
                                               const BSONObj& indexSpec,
                                               const CollatorInterface* defaultCollator) {
    if (auto collationElem = indexSpec[IndexDescriptor::kCollationFieldName]) {
        // validateIndexSpec() should have already verified that 'collationElem' is an object.
        invariant(collationElem.type() == BSONType::Object);

        auto collator = CollatorFactoryInterface::get(opCtx->getServiceContext())
                            ->makeFromBSON(collationElem.Obj());
        if (!collator.isOK()) {
            return collator.getStatus();
        }

        if (collator.getValue()) {
            // If the collator factory returned a non-null collator, then inject the entire
            // collation specification into the index specification. This is necessary to fill
            // in any options that the user omitted.
            BSONObjBuilder bob;

            for (auto&& indexSpecElem : indexSpec) {
                if (IndexDescriptor::kCollationFieldName != indexSpecElem.fieldNameStringData()) {
                    bob.append(indexSpecElem);
                }
            }
            bob.append(IndexDescriptor::kCollationFieldName,
                       collator.getValue()->getSpec().toBSON());

            return bob.obj();
        } else {
            // If the collator factory returned a null collator (representing the "simple"
            // collation), then we simply omit the "collation" from the index specification.
            // This is desirable to make the representation for the "simple" collation
            // consistent between v=1 and v=2 indexes.
            return indexSpec.removeField(IndexDescriptor::kCollationFieldName);
        }
    } else if (defaultCollator) {
        // validateIndexSpec() should have added the "v" field if it was not present and
        // verified that 'versionElem' is a number.
        auto versionElem = indexSpec[IndexDescriptor::kIndexVersionFieldName];
        invariant(versionElem.isNumber());

        if (IndexVersion::kV2 <= static_cast<IndexVersion>(versionElem.numberInt())) {
            // The user did not specify an explicit collation for this index and the collection
            // has a default collator. If we're building a v=2 index, then we should inherit the
            // collection default. However, if we're building a v=1 index, then we're implicitly
            // building an index that's using the "simple" collation.
            BSONObjBuilder bob;

            bob.appendElements(indexSpec);
            bob.append(IndexDescriptor::kCollationFieldName, defaultCollator->getSpec().toBSON());

            return bob.obj();
        }
    }
    return indexSpec;
}

void CDivisionController::SaveDivisionDefenseInfo(const string& strTableName, CDivisionDefenseInfoModel *pDivisionDefenseModel)
{
	BSONObj boDivisionDefenseInfo;
	BSONObj boCondition;

	boDivisionDefenseInfo = pDivisionDefenseModel->GetDivisionDefenseInfo();
	cout << "Save Data:" << boDivisionDefenseInfo.toString();
	boCondition = boDivisionDefenseInfo;
	boCondition = boCondition.removeField("clock");	
	Insert(strTableName, boDivisionDefenseInfo, boCondition);
}

std::list<mongo::BSONObj> TransformComputable::compute_transform(mongo::BSONObj query, std::string collection)
{
  //get positions in other frames
  BSONObjBuilder query_other_frames;
  query_other_frames.appendElements(query.removeField("frame").removeField("allow_tf"));
  query_other_frames.append("frame", fromjson("{$exists:true}"));
  QResCursor cur = robot_memory_->query(query_other_frames.obj(), collection);

  //transform them is possible
  std::list<mongo::BSONObj> res;
  std::string target_frame = query.getField("frame").String();
  while(cur->more())
  {
    BSONObj pos = cur->next();
    if(pos.hasField("frame") && pos.hasField("translation") && pos.hasField("rotation"))
    {
      std::string src_frame = pos.getField("frame").String();
      Time now(0, 0);
      if(tf_->can_transform(target_frame.c_str(), src_frame.c_str(), now))
      {
        BSONObjBuilder res_pos;
        std::vector<BSONElement> src_trans = pos.getField("translation").Array();
        std::vector<BSONElement> src_rot = pos.getField("rotation").Array();
        fawkes::tf::Transform pose_tf(fawkes::tf::Quaternion(src_rot[0].Double(), src_rot[1].Double(), src_rot[2].Double(), src_rot[3].Double()),
          fawkes::tf::Vector3(src_trans[0].Double(), src_trans[1].Double(), src_trans[2].Double()));
        fawkes::tf::Stamped<fawkes::tf::Pose> src_stamped_pose(pose_tf, Time(0, 0), src_frame.c_str());
        fawkes::tf::Stamped<fawkes::tf::Pose> res_stamped_pose;
        tf_->transform_pose(target_frame.c_str(), src_stamped_pose, res_stamped_pose);

        res_pos.appendElements(pos.removeField("frame").removeField("translation").removeField("rotation").removeField("_id"));
        res_pos.append("frame", target_frame);
        res_pos.append("allow_tf", true);
        BSONArrayBuilder arrb_trans;
        arrb_trans.append(res_stamped_pose.getOrigin().x());
        arrb_trans.append(res_stamped_pose.getOrigin().y());
        arrb_trans.append(res_stamped_pose.getOrigin().z());
        res_pos.append("translation", arrb_trans.arr());
        BSONArrayBuilder arrb_rot;
        arrb_rot.append(res_stamped_pose.getRotation().x());
        arrb_rot.append(res_stamped_pose.getRotation().y());
        arrb_rot.append(res_stamped_pose.getRotation().z());
        arrb_rot.append(res_stamped_pose.getRotation().w());
        res_pos.append("rotation", arrb_rot.arr());
        res.push_back(res_pos.obj());
      }
//      else
//      {
//        logger_->log_info(name_, "Cant transform %s to %s", src_frame.c_str(), target_frame.c_str());
//      }
    }
  }
  return res;
}

    bool run(OperationContext* txn,
             const string& dbname,
             BSONObj& jsobj,
             int,
             string& errmsg,
             BSONObjBuilder& result) {
        DBDirectClient db(txn);

        const NamespaceString toReIndexNs = parseNsCollectionRequired(dbname, jsobj);

        LOG(0) << "CMD: reIndex " << toReIndexNs;

        ScopedTransaction transaction(txn, MODE_IX);
        Lock::DBLock dbXLock(txn->lockState(), dbname, MODE_X);
        OldClientContext ctx(txn, toReIndexNs.ns());

        Collection* collection = ctx.db()->getCollection(toReIndexNs.ns());
        if (!collection) {
            if (ctx.db()->getViewCatalog()->lookup(txn, toReIndexNs.ns()))
                return appendCommandStatus(
                    result, {ErrorCodes::CommandNotSupportedOnView, "can't re-index a view"});
            else
                return appendCommandStatus(
                    result, {ErrorCodes::NamespaceNotFound, "collection does not exist"});
        }

        BackgroundOperation::assertNoBgOpInProgForNs(toReIndexNs.ns());

        vector<BSONObj> all;
        {
            vector<string> indexNames;
            collection->getCatalogEntry()->getAllIndexes(txn, &indexNames);
            for (size_t i = 0; i < indexNames.size(); i++) {
                const string& name = indexNames[i];
                BSONObj spec = collection->getCatalogEntry()->getIndexSpec(txn, name);
                all.push_back(spec.removeField("v").getOwned());

                const BSONObj key = spec.getObjectField("key");
                const Status keyStatus = validateKeyPattern(key);
                if (!keyStatus.isOK()) {
                    errmsg = str::stream()
                        << "Cannot rebuild index " << spec << ": " << keyStatus.reason()
                        << " For more info see http://dochub.mongodb.org/core/index-validation";
                    return false;
                }
            }
        }

        result.appendNumber("nIndexesWas", all.size());

        {
            WriteUnitOfWork wunit(txn);
            Status s = collection->getIndexCatalog()->dropAllIndexes(txn, true);
            if (!s.isOK()) {
                errmsg = "dropIndexes failed";
                return appendCommandStatus(result, s);
            }
            wunit.commit();
        }

        MultiIndexBlock indexer(txn, collection);
        // do not want interruption as that will leave us without indexes.

        Status status = indexer.init(all);
        if (!status.isOK())
            return appendCommandStatus(result, status);

        status = indexer.insertAllDocumentsInCollection();
        if (!status.isOK())
            return appendCommandStatus(result, status);

        {
            WriteUnitOfWork wunit(txn);
            indexer.commit();
            wunit.commit();
        }

        // Do not allow majority reads from this collection until all original indexes are visible.
        // This was also done when dropAllIndexes() committed, but we need to ensure that no one
        // tries to read in the intermediate state where all indexes are newer than the current
        // snapshot so are unable to be used.
        auto replCoord = repl::ReplicationCoordinator::get(txn);
        auto snapshotName = replCoord->reserveSnapshotName(txn);
        replCoord->forceSnapshotCreation();  // Ensures a newer snapshot gets created even if idle.
        collection->setMinimumVisibleSnapshot(snapshotName);

        result.append("nIndexes", (int)all.size());
        result.append("indexes", all);

        return true;
    }

        bool run(OperationContext* txn, const string& dbname , BSONObj& jsobj, int, string& errmsg, BSONObjBuilder& result, bool /*fromRepl*/) {
            DBDirectClient db(txn);

            BSONElement e = jsobj.firstElement();
            string toDeleteNs = dbname + '.' + e.valuestr();

            LOG(0) << "CMD: reIndex " << toDeleteNs << endl;

            Lock::DBLock dbXLock(txn->lockState(), dbname, MODE_X);
            Client::Context ctx(txn, toDeleteNs);

            Collection* collection = ctx.db()->getCollection( txn, toDeleteNs );

            if ( !collection ) {
                errmsg = "ns not found";
                return false;
            }

            BackgroundOperation::assertNoBgOpInProgForNs( toDeleteNs );

            std::vector<BSONObj> indexesInProg = stopIndexBuilds(txn, ctx.db(), jsobj);

            vector<BSONObj> all;
            {
                vector<string> indexNames;
                collection->getCatalogEntry()->getAllIndexes( txn, &indexNames );
                for ( size_t i = 0; i < indexNames.size(); i++ ) {
                    const string& name = indexNames[i];
                    BSONObj spec = collection->getCatalogEntry()->getIndexSpec( txn, name );
                    all.push_back(spec.removeField("v").getOwned());

                    const BSONObj key = spec.getObjectField("key");
                    const Status keyStatus = validateKeyPattern(key);
                    if (!keyStatus.isOK()) {
                        errmsg = str::stream()
                            << "Cannot rebuild index " << spec << ": " << keyStatus.reason()
                            << " For more info see http://dochub.mongodb.org/core/index-validation";
                        return false;
                    }
                }
            }

            result.appendNumber( "nIndexesWas", all.size() );

            {
                WriteUnitOfWork wunit(txn);
                Status s = collection->getIndexCatalog()->dropAllIndexes(txn, true);
                if ( !s.isOK() ) {
                    errmsg = "dropIndexes failed";
                    return appendCommandStatus( result, s );
                }
                wunit.commit();
            }

            MultiIndexBlock indexer(txn, collection);
            // do not want interruption as that will leave us without indexes.

            Status status = indexer.init(all);
            if (!status.isOK())
                return appendCommandStatus( result, status );

            status = indexer.insertAllDocumentsInCollection();
            if (!status.isOK())
                return appendCommandStatus( result, status );

            {
                WriteUnitOfWork wunit(txn);
                indexer.commit();
                wunit.commit();
            }

            result.append( "nIndexes", (int)all.size() );
            result.append( "indexes", all );

            IndexBuilder::restoreIndexes(indexesInProg);
            return true;
        }