[GEODE-7259] Function Execution Through REST API Limitation

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.11.0
• Component/s: docs, rest (dev)
• Labels: pull-request-available
• Assignee: Alberto Bustamante Reyes
• Reporter: Juan Ramos
• Created: 01/Oct/19 08:15
• Updated: 30/Dec/19 18:49
• Resolved: 17/Oct/19 20:05

Description

Function execution through the REST API doesn't support nested collections as part of the parameters, this is an undocumented limitation.
We basically try to convert the JSON parameters into a Map and afterwards, based on the Map contents and the @type value within the JSON string, convert that into the actual Object[] parameters expected by the function. If any of those objects contain an inner collection ([] as JSON) or object ({} as JSON), the initial parsing will always fail:

AbstractBaseController.java

private Map<?, ?> convertJsonToMap(final String jsonString) {
    Map<String, String> map = new HashMap<String, String>();

    // convert JSON string to Map
    try {
      map = objectMapper.readValue(jsonString, new TypeReference<HashMap<String, String>>() {});
    } catch (JsonParseException e) {
      throw new MalformedJsonException(
          "Bind params specified as JSON document in the request is incorrect!", e);
    } catch (JsonMappingException e) {
      throw new MalformedJsonException(
          "Server unable to process bind params specified as JSON document in the request!", e);
    } catch (IOException e) {
      throw new GemfireRestException("Server has encountered error while process this request!", e);
    }
    return map;
  }

Issue Links

• links to: GitHub Pull Request #4154