Adding Support for XML

[ErfanThinker]

Hey there,
I crossed a problem and I guess a new feature should be added to realm. consider this XML:

   "Content":{
      "ContentDetail":[
         {
            "FileName":"test.mp3",
            "ContentTypeID":3,
            "ContentDetailMetadata":{
               "Metadata":[
                  {
                     "ID":2,
                     "Value":"2017-08-02 09:40:30"
                  },
                  {
                     "ID":1,
                     "Value":"35.73876557934912,51.50785446166992"
                  }
               ]
            }
         },
         {
            "FileName":"2.jpg",
            "ContentTypeID":2,
            "ContentDetailMetadata":[
               {
                  "Metadata":{
                     "ID":2,
                     "Value":"2017-08-02 09:40:30"
                  }
               },
               {
                  "Metadata":{
                     "ID":1,
                     "Value":"35.73876557934912,51.50785446166992"
                  }
               }
            ]
         }
      ]
   }
}

in which all nodes except Content can exist or be 1 of them or more than one of them. mapping this to Json and createObjectFromJson() won't work since it produces JsonObject or JsonArray base on number of sub-nodes. if there was a method like createObjectFromXML() which would handle this problem would be very nice.

Related SO Question.

[cmelchior]

That sounds like a problem with your XML -> JSON parser? If the parser creates object when there is only 1 item, but array if multiple exists. Ideally, any parser should follow the XSD if such a one exists for your XML?

We have talked about adding XML support to Realm, but the use case comes up so infrequently that I don't think we can give it a high priority any time soon.

[cmelchior]

However, It is a use case we are considering and it is included in our general thoughts for an import/export API: #3758

I'll fold this issue into that, but you can follow #3758 for updates