JSONfile-to-Global #1

The similarity between JSON objects + arrays and Globals in IRIS or Caché is evident.
With small and medium size JSON objects navigation across %Dynamic Objects is comfortable.
But with large and/or deep cascaded objects it becomes a challenge.

The presented tool offers 3 variants

• loading an already existing %Dyamic object or Array into a global of your choice
• loading a %Stream containing a JSON object into a global of your choice
• loading an external File containing a JSON object into a global of your choice

How to use it

USER>read str
{"id":306904,"last_star_ts":0,"completion_day_level":{},"global_score":0,"local_score":0,"stars":0,"name":"name_1"}
USER>set jsn={}.%FromJSON(str)
USER>write ##class(rcc.jstog).toglobal(jsn,"^jsn")
1
USER>zwrite ^jsn
^jsn("global_score")=0
^jsn("id")=306904
^jsn("last_star_ts")=0
^jsn("local_score")=0
^jsn("name")="name_1"
^jsn("stars")=0

USER>zzjson jsn
{
  "id":306904,
  "last_star_ts":0,
  "completion_day_level":{
  },
  "global_score":0,
  "local_score":0,
  "stars":0,
  "name":"name_1"
}
USER>

from an already existing Stream, it's like this

USER>write ##class(rcc.jstog).stream(jsonstream,"^jsstr")
1

and from a file it is this method:

USER>set filename="/opt/irisbuild/src/data/demo.json"
USER>write ##class(rcc.jstog).file(filename)  ; using default gloabel ^jsom
1
USER>

File content:
 

Global content:

This might not look so spectacular.
But see and try the difference with a 6 MB sized JSON Object.

Video

GitHub