I have this object that has an array of hashes representing addresses.

See below:

> db.customers.find(

{"_id":"c098443ae4243643b189fc43e071a0a3"}

)
{ "_id" : "c098443ae4243643b189fc43e071a0a3", "addresses" : [

{ "address1" : "18 W 18th Street", "address2" : "Floor 9", "city" : "New York", "companyName" : "The OpenSky Project", "country" : "US", "firstName" : "Matthew", "lastName" : "Fitzgerald", "phone" : "201-406-1869", "postalCode" : "10016", "slug" : "2fghj2x", "state" : "NY", "subtype" : 2, "type" : "customer" }

,

{ "address1" : "101 Main Street", "city" : "Middle America", "country" : "us", "firstName" : "Matthew", "lastName" : "Fitzgerald", "phone" : "201-406-1869", "phoneExtension" : "111", "postalCode" : "55555", "slug" : "fm8x", "state" : "KS", "type" : "customer" }

] }

When I attempt to remove an address using "$pullAll" and unordered hash it does not remove it.

Ex: This fails
> db.customers.update(

{ "_id": "c098443ae4243643b189fc43e071a0a3" }

,
{ "$pullAll":
{ "addresses":
[

{ "slug": "fm8x", "type": "customer", "firstName": "Matthew", "lastName": "Fitzgerald", "address1": "101 Main Street", "city": "Middle America", "state": "KS", "postalCode": "55555", "country": "us", "phone": "201-406-1869", "phoneExtension": "111" }

]
}
}
)

Ex: This succeeds

> db.customers.update(

{ "_id": "c098443ae4243643b189fc43e071a0a3" }

,
{ "$pullAll":
{ "addresses":
[

{ "address1": "101 Main Street", "city": "Middle America", "country": "us", "firstName": "Matthew", "lastName": "Fitzgerald", "phone": "201-406-1869", "phoneExtension": "111", "postalCode": "55555", "slug": "fm8x", "state": "KS", "type": "customer" }

]
}
}
)

Question: Does the order of keys in javascript hash objects matter or is it a MongoDB specific limitation? And what are the rules for ordering of keys in hashes in MongoDB (is it alphabetical by key). Is it ordered at all?

Regards,
Matt