How to parse json with multiple records using pljson - oracle

Question

I am having issues parsing this json data there is a total of 2 records in "orders" and I need to retrieve data based on
order 1 and order 2 with also of each item in "orders.order_items"
Any help would be great, it's stressing me out...
{
"status": "success",
"execution_time": "0.0304 seconds",
"total_records": 2,
"records_returned": 2,
"offset": 0,
"limit": 150,
"orders": [{
"id": "305954583",
"email": "email#gmail.com",
"date_added": "2022-03-16 20:42:44",
"date_updated": "2022-03-16 20:43:12",
"checkout_data": [],
"order_metadata": [],
"discount_list": [],
"order_notes": [],
"order_items": [{
"id": "163220786",
"name": "099922511015",
"price": 5,
"quantity": 3,
"weight": 0,
"code": "099922511015",
"delivery_type": "ship",
"category_code": "",
"fulfillment_method": "",
"variation_list": [],
"metadata": []
}],
"order_shipments": []
}, {
"id": "170951391",
"email": "email2#gmail.com",
"date_added": "2021-04-27 22:50:11",
"date_updated": "2022-03-17 02:38:43",
"checkout_data": [],
"order_metadata": [],
"discount_list": [],
"order_notes": [{
"date_added": "2022-03-17 02:38:43",
"username": "username",
"content": "testing notes"
}],
"order_items": [{
"id": "112184373",
"name": "COUNTER",
"price": 1,
"quantity": 1,
"weight": 0.25,
"code": "COUNTER",
"delivery_type": "ship",
"category_code": "",
"fulfillment_method": "",
"variation_list": [],
"metadata": []
}],
"order_shipments": []
}]
}
Currently, this is how I have it
for i in 1..2 loop
dbms_output.put_line('Order #: '||json_ext.get_string(l_json, 'orders['||i||'].id'));
temp := json_list(l_json.get('orders['||i||'].order_items'));
dbms_output.put_line(temp.get_string);
end loop;

Answer 1

You can use:
DECLARE
obj pljson := pljson(
'{
"status": "success",
"execution_time": "0.0304 seconds",
"total_records": 2,
"records_returned": 2,
"offset": 0,
"limit": 150,
"orders": [{
"id": "305954583",
"email": "email#gmail.com",
"date_added": "2022-03-16 20:42:44",
"date_updated": "2022-03-16 20:43:12",
"checkout_data": [],
"order_metadata": [],
"discount_list": [],
"order_notes": [],
"order_items": [{
"id": "163220786",
"name": "099922511015",
"price": 5,
"quantity": 3,
"weight": 0,
"code": "099922511015",
"delivery_type": "ship",
"category_code": "",
"fulfillment_method": "",
"variation_list": [],
"metadata": []
}],
"order_shipments": []
}, {
"id": "170951391",
"email": "email2#gmail.com",
"date_added": "2021-04-27 22:50:11",
"date_updated": "2022-03-17 02:38:43",
"checkout_data": [],
"order_metadata": [],
"discount_list": [],
"order_notes": [{
"date_added": "2022-03-17 02:38:43",
"username": "username",
"content": "testing notes"
}],
"order_items": [{
"id": "112184373",
"name": "COUNTER",
"price": 1,
"quantity": 1,
"weight": 0.25,
"code": "COUNTER",
"delivery_type": "ship",
"category_code": "",
"fulfillment_method": "",
"variation_list": [],
"metadata": []
}],
"order_shipments": []
}]
}'
);
v_order_list pljson_list;
v_order pljson;
v_order_items pljson_list;
v_item pljson;
BEGIN
v_order_list := pljson_ext.get_json_list( obj, 'orders');
FOR i IN 1 .. v_order_list.COUNT() LOOP
v_order := TREAT(v_order_list.get(i).get_element() AS pljson);
DBMS_OUTPUT.PUT_LINE('Order id: ' || v_order.get_string('id'));
v_order_items := TREAT(v_order.get('order_items').get_element() AS pljson_list);
FOR j IN 1 .. v_order_items.COUNT() LOOP
v_item := TREAT(v_order_items.get(j).get_element() AS pljson);
DBMS_OUTPUT.PUT_LINE(' Order item id: ' || v_item.get_string('id'));
END LOOP;
END LOOP;
END;
/
Which outputs:
Order id: 305954583
Order item id: 163220786
Order id: 170951391
Order item id: 112184373
db<>fiddle here