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Questions tagged [bson]

BSON stands for "Binary JSON". It is a computer data interchange format used mainly as a data storage and network transfer format in the MongoDB database.

BSON [bee · sahn], short for Bin­ary JSON, is a bin­ary-en­coded seri­al­iz­a­tion of JSON-like doc­u­ments. Like JSON, BSON sup­ports the em­bed­ding of doc­u­ments and ar­rays with­in oth­er doc­u­ments and ar­rays. BSON also con­tains ex­ten­sions that al­low rep­res­ent­a­tion of data types that are not part of the JSON spec. For ex­ample, BSON has a Date type and a BinData type.

BSON can be com­pared to bin­ary inter­change for­mats, like Proto­col Buf­fers. BSON is more "schema-less" than Proto­col Buf­fers, which can give it an ad­vant­age in flex­ib­il­ity but also a slight dis­ad­vant­age in space ef­fi­ciency (BSON has over­head for field names with­in the seri­al­ized data).

BSON was de­signed to have the fol­low­ing three char­ac­ter­ist­ics:

  1. Lightweight

    Keep­ing spa­tial over­head to a min­im­um is im­port­ant for any data rep­res­ent­a­tion format, es­pe­cially when used over the net­work.

  2. Traversable

    BSON is de­signed to be tra­versed eas­ily. This is a vi­tal prop­erty in its role as the primary data rep­res­ent­a­tion for Mon­goDB.

  3. Efficient

    En­cod­ing data to BSON and de­cod­ing from BSON can be per­formed very quickly in most lan­guages due to the use of C data types.

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mongodb with rails, find by id in array

I can fetch an element by BSON id from Mongodb with db.my_collection.find({_id: ObjectId("567bc95ab62c732243123450")}) And it works. But how can I get an array of ids? something like db.my_collection.find({_id:…
valk
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How to convert string to BSON using MongoDB C++ driver?

Similar to toString is there a way we can convert a string to BSON object? I need to remove a document using C++ driver the the remove function expects the query to have BSON object.
user837208
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Properly parse a Mongo cursor to PHP

When converting a MongoCursor to PHP I use this script. Which was presented here StackOverflowSO using the upper method, the structure is same but _id is whereas using the lower script which yields the below included result. Unfortunately, this…
user1094824
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How to get ObjectID as String from mongo-go-driver cursor?

I would like to get ObjectID as a string because I have other storage types, so I want to avoid to use primitive.ObjectID in my struct to keep the layers independent. I'm new to Golang, thanks. package listing type Card struct { ID …
Bruno Canongia
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Migration Spring Boot 1.X to 2.X remove _class field from BSON Document

I recently migrated the Spring Boot version of a project, upgrading from version 1.X to 2.X. However, this caused problems in recovering persisted objects using the org.bson.Document (using PojoCodecProvider), because they did not have the _class…
falvojr
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How to ignore nulls while unmarshalling a MongoDB document?

I would like to know if there's any approach that would allow me to ignore null types while unmarshalling a MongoDB document into a Go struct. Right now I have some auto-generate Go structs, something like this: type User struct { Name string…
Andrew
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How to read and write BSON documents in Android

Dear All, Can anyone tell me that how to read and write BSON document in Android. Thanks in Advance. Irfan
Irfan
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PHP DateTime with TimeZone to MongoDB\BSON\UTCDateTime

I need help with PHP DateTime with TimeZone converting to MongoDB\BSON\UTCDateTime. If I have string "2015-10-20T04:02:00.608000+01:00" it gives me a DateTime $date = DateTime::createFromFormat( 'Y-m-d\TH:i:s.uT', $string ); DateTime date =>…
Čamo
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How to flatten out a nested json structure in go

I am getting nested data from mongo and I want to flatten that out in a structure to store it in a csv file. The data looks like this: { "_id" : "bec7bfaa-7a47-4f61-a463-5966a2b5c8ce", "data" : { "driver" : { "etaToStore"…
Naguib Ihab
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Store files under 16MB in MongoDB using GridFs is a good idea?

I know MongoDB documents only supports up to 16MB. If I want to store files bigger than this value, I should use GridFs. Lower than that, they suggest to use BSON instead. I have made a test, saving 33000 files with 10MB each, 16500 using BSON and…
Gabriel
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How to Convert List to BsonArray to save a MongoDB Document

I'm having an Model Class, I need to Save it in a MongoDB Collection. My Model Class: public Class Employee { public string EmpID { get; set; } public string EmpName { get; set; } public List EmpMobile { get; set; } } public…
user6060080
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How do I generate a Mongo DB ObjectID in Swift?

I need to generate a timestamped object id of BSON format in Swift. The ObjectID is for Mongo DB. How can this be accomplished?
Andrew Johnson
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Golang Bson sort parameters in mgo

I am trying to pass a multiple sort query to the "Sort" parameter of the mgo package (see https://godoc.org/labix.org/v2/mgo#Query.Sort). If the parameters are dynamic (currently held in a slice), how can I translate that into a valid sort string. A…
Glenn Walker
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Bson - How to convert JSON to List and List to JSON?

I'm using Java Driver 3.0 with MongoDB in order to send JSONs through a webservice. When I want to convert a Document object (org.bson.Document) to JSON, I use obj.toJson(), and when I want to convert a JSON to a Document object, I use…
Thematrixme
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BSON::Binary::InvalidType "my file content" is not a valid binary type. Please use one of :generic, :function, :old, :uuid_old, :uuid, :md5, :user.):

I am trying to save files into gridfs using carrierwave mongoid in rails. I am unable to do this process due to this error: BSON::Binary::InvalidType ("my file content" is not a valid binary type. Please use one of :generic, :function, :old,…
Ratnakar Vanapalli
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