Howto; String to ObjectID

[sc28]

I have a process that is inserting a struct into a table:

    type Info struct {

ID     bson.ObjectId `json:"id,omitempty" bson:"_id,omitempty"`

        ... other

    }

    data := &Info{}

    data.ID := bson.NewObjectID()

    ...

    // do the insert - all OK

    I now need to pass the ObjectId to another process that will extract the record and do other work - here's where I'm running into problems/misunderstanding something fundamental:

    cmd := exec.Command("./otherProcess" "-id=", data.ID.Hex())

    cmd.Start()

In the otherProcess, I'm doing this:

    recordId := bson.ObjectIdHex(*examID) // *examID is read (works) from the commandline arg "-id"

    session.DB("myDB").C("MyCollection").FindId(bson.M{"_id": recordId}).One(&result)

    No records are found (the ObjectId *is* in the mongo collection).  So the issue I'm having is how to properly pass the ObjectId as a String to another process, and properly convert the string to a bson.ObjectId for lookup.

TIA!

[sc28]

Ok, figured it out - I needed to do this:

     session.DB("myDB").C("MyCollection").FindId(bson.ObjectIdHex(*examID)).One(&result)

instead of creating a bson.M{"_id", ...} struct.