populate.ipynb

{
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   "cell_type": "code",
   "execution_count": 1,
   "id": "af5731eb-3173-46bc-9507-9fb9d3daf138",
   "metadata": {},
   "outputs": [],
   "source": [
    "from fhirpathpy import evaluate as fhirpath"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "id": "0041cabd-d980-4669-affc-c8746eb6d86d",
   "metadata": {},
   "outputs": [],
   "source": [
    "patient = {\n",
    "    \"resourceType\": \"Patient\",\n",
    "    \"address\": [{}],\n",
    "}"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "id": "fd40aace-9970-4a50-841f-e72e9da2fcaf",
   "metadata": {},
   "outputs": [],
   "source": [
    "address_nodes = fhirpath(patient,\"Patient.address.first()\")\n",
    "address_node = address_nodes[0]\n",
    "#FHIRPathpy returns elements of the original object, so you can mutate them to update the original resource\n",
    "address_node[\"postalCode\"] = \"9999\""
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "id": "7a4ae1df-9a02-4a51-af8e-1d92bb0e159b",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "{'resourceType': 'Patient', 'address': [{'postalCode': '9999'}]}\n"
     ]
    }
   ],
   "source": [
    "print(patient)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
   "id": "720558b9-569f-44eb-8fe1-0fab851fedf9",
   "metadata": {},
   "outputs": [],
   "source": [
    "# For more convenient results you can create the resource on the fly\n",
    "# But in this case you will need to create/generate a lazy model structure for FHIR resources\n",
    "\n",
    "class defaultlist(list):\n",
    "    def __init__(self, fx):\n",
    "        self._fx = fx\n",
    "        self.append(fx())\n",
    "    def _fill(self, index):\n",
    "        while len(self) <= index:\n",
    "            self.append(self._fx())\n",
    "    def __setitem__(self, index, value):\n",
    "        self._fill(index)\n",
    "        list.__setitem__(self, index, value)\n",
    "    def __getitem__(self, index):\n",
    "        self._fill(index)\n",
    "        return list.__getitem__(self, index)\n",
    "\n",
    "class PatientFactory(dict):\n",
    "    primitive = [\"_address\"]\n",
    "    list_keys = [\"address\", \"name\"]\n",
    "    \n",
    "    def __init__(self):\n",
    "        self.resource = {\n",
    "            \"resourceType\": \"Patient\"\n",
    "        }\n",
    "    def __getitem__(self, key):\n",
    "        return self.get(key)\n",
    "        \n",
    "    def get(self, key): \n",
    "        if key in self.primitive:\n",
    "            return None\n",
    "        if key not in self.resource:\n",
    "            if key in self.list_keys:\n",
    "                self.resource[key] = defaultlist(dict)\n",
    "            else:\n",
    "                self.resource[key] = {}\n",
    "        \n",
    "        return self.resource[key]      "
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 6,
   "id": "45c80a03-9661-4161-a7d8-16663469ee5c",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "{'resourceType': 'Patient'}\n"
     ]
    }
   ],
   "source": [
    "patient = PatientFactory()\n",
    "print(patient.resource)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 7,
   "id": "3b888249-ef33-4db2-ad7b-805a7cfa5162",
   "metadata": {},
   "outputs": [],
   "source": [
    "address_nodes = fhirpath(patient,\"Patient.address.first()\")\n",
    "address_node = address_nodes[0]\n",
    "#FHIRPathpy returns elements of the original object, so you can mutate them to update the original resource\n",
    "address_node[\"postalCode\"] = \"9999\""
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 8,
   "id": "767400e0-26aa-40d3-9292-63871438986f",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "{'resourceType': 'Patient', 'address': [{'postalCode': '9999'}]}\n"
     ]
    }
   ],
   "source": [
    "print(patient.resource)"
   ]
  }
 ],
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