RejectedSoftware Forums

Hello,

I have a JSON document read in from MongoDB and want to access some field that contains another Json object (as a child) and an array of Json objects as another child. The key for the field is called 'gtlayer' in my particular document. I can access this object in the Mongo client using the following:

db.projects.find( { }, { gtlayer: 1 } )

Inside my gtlayer json object there is an object called shape the value of which is an array describing various shapes. My ultimate goal is to read all the shape objects into an array of D classes representing the various shapes. Anyway I am stumped on how to properly get at this data. I currently do the following:

auto cur_proj = projects.find( Bson.EmptyObject, ["gtlayer": 1] ); \\Get a cursor to the database.
   
if( cur_proj.empty() ) {
    //write some error message.
} else {
    Json gtlayer = Json.EmptyObject;

    foreach( Bson bs; cur_proj ) {
        Json doc = bs.toJson();
	/* How do I check if current doc is "_id" or "gtlayer" ???
         * Alternately can I find the correct object/document without using the
         * foreach loop at all, as that would seem preferable. 
         */
         if( / *found it */ ) {
            gtlayer = doc;
            break;
          }
      }

      //Skips some sanity checks.
      auto shapes = gtlayer["shapes"].get!Json; //Is this how I get the 'Shapes' object?

Thanks for any help.

Craig