adding multible objects parts to bson array

[javantamt]

Hey there!
there is a JSON file in a BSON Object looking like the following.
I'm going to add in the marked areas the same attribut. I'm having problems in my loops to get the number of elements from a array. so I can't navigate in it. Only possible way I see is to iterate through every single element of the array and check if the returned value is 0x00 or valid.
Is there a possebilety to get the number of elements in the array?

Any help would be awesome!

thx!

{
    "_id" : ObjectId("5705918cb6a7d12aea0525f1"),
//add: "status" : 0
    "targets" : {
        "fast" : [
            {
                "size" : "poster",
                "format" : "jpg",
                "count" : 5
        //add: "status" : 0
            },
            {
                "size" : "thumb",
                "format" : "jpg"
        //add: "status" : 0
            }
            // more fields of the array could follow here...          
        ],
        "slow" : [
            {
                "size" : "sd",
                "format" : "mp4"
        //add: "status" : 0
            },
            {
                "size" : "sd",
                "format" : "webm"
        //add: "status" : 0
            }
            // more fields of the array could follow here...              
        ]
}}  

[Andrew Morrow]

Hi -

What driver or API are you trying to use to accomplish this?

Thanks

Andrew

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