可选authdb可选auto可选bsonreturn BSON regular expressions as BSONRegExp instances.
可选cappedCreate a capped collection
可选changeIf set, enables pre-update and post-update document events to be included for any change streams that listen on this collection.
可选checkthe serializer will check if keys are valid.
可选clusteredA document specifying configuration options for clustered collections. For MongoDB 5.3 and above.
可选collationCollation
可选commentComment to apply to the operation.
In server versions pre-4.4, 'comment' must be string. A server error will be thrown if any other type is provided.
In server versions 4.4 and above, 'comment' can be any valid BSON type.
可选db可选enableEnable utf8 validation when deserializing BSON documents. Defaults to true.
可选 实验性encrypted可选expireThe number of seconds after which a document in a timeseries or clustered collection expires.
可选explainSpecifies the verbosity mode for the explain output.
可选fieldsallow to specify if there what fields we wish to return as unserialized raw buffer.
可选flagsAvailable for the MMAPv1 storage engine only to set the usePowerOf2Sizes and the noPadding flag
可选ignoreserialize will not emit undefined fields (default:true)
可选indexAllows users to specify a default configuration for indexes when creating a collection
可选maxThe maximum number of documents in the capped collection
可选max可选no可选omit可选pipelineAn array that consists of the aggregation pipeline stage. Creates the view by applying the specified pipeline to the viewOn collection or view
可选pkA primary key factory function for generation of custom _id keys.
可选promotewhen deserializing a Binary will return it as a node.js Buffer instance.
可选promotewhen deserializing a Long will fit it into a Number if it's smaller than 53 bits.
可选promotewhen deserializing will promote BSON values to their Node.js closest equivalent types.
可选rawEnabling the raw option will return a Node.js Buffer which is allocated using allocUnsafe API. See this section from the Node.js Docs here for more detail about what "unsafe" refers to in this context. If you need to maintain your own editable clone of the bytes returned for an extended life time of the process, it is recommended you allocate your own buffer and clone the contents:
const raw = await collection.findOne({}, { raw: true });
const myBuffer = Buffer.alloc(raw.byteLength);
myBuffer.set(raw, 0);
// Only save and use `myBuffer` beyond this point
Please note there is a known limitation where this option cannot be used at the MongoClient level (see NODE-3946).
It does correctly work at Db, Collection, and per operation the same as other BSON options work.
可选readSpecify a read concern and level for the collection. (only MongoDB 3.2 or higher supported)
可选readThe preferred read preference (ReadPreference.primary, ReadPreference.primary_preferred, ReadPreference.secondary, ReadPreference.secondary_preferred, ReadPreference.nearest).
可选retryShould retry failed writes
可选serializeserialize the javascript functions (default:false).
可选sessionSpecify ClientSession for this command
可选sizeThe size of the capped collection in bytes
可选storageAllows users to specify configuration to the storage engine on a per-collection basis when creating a collection
可选strictReturns an error if the collection does not exist
可选timeseriesA document specifying configuration options for timeseries collections.
可选usewhen deserializing a Long will return as a BigInt.
可选validationDetermines whether to error on invalid documents or just warn about the violations but allow invalid documents to be inserted
可选validationDetermines how strictly MongoDB applies the validation rules to existing documents during an update
可选validatorAllows users to specify validation rules or expressions for the collection. For more information, see Document Validation
可选viewThe name of the source collection or view from which to create the view. The name is not the full namespace of the collection or view (i.e., does not include the database name and implies the same database as the view to create)
可选will可选writeWrite Concern as an object
BSON Serialization options.