Incorrect value for embedded LiteralInteger elements when using REST API

[abelhegedus]

We have found that MMS returns double value in case of LiteralInteger attributes if listing all elements in project ( GET ../elements operation ) but returns the correct value when retrieving only a single element (GET ../elements/{id} operation). This seems to happen only with LiteralInteger in our tests. The issue is reproducible with a project on the public OpenMBEE MMS (see API requests below).

Example

• Listing all element from the latest commit of IQS4MMS Demos / TMT / master project: https://mms.openmbee.org/alfresco/service/projects/PROJECT-0e791c0e-16fe-422f-8f85-462ab035ce99/refs/master/elements contains

  {
    "_appliedStereotypeIds": [],
    "documentation": "",
    "type": "Slot",
    "id": "_18_5_2_e64033a_1510706944742_970575_60595-slot-_18_0_5_c0402fd_1475170761179_993827_168566",
    "mdExtensionsIds": [],
    "ownerId": "_18_5_2_e64033a_1510706944742_970575_60595",
    "syncElementId": null,
    "appliedStereotypeInstanceId": null,
    "value": [
      {
        "_appliedStereotypeIds": [],
        "documentation": "",
        "type": "LiteralInteger",
        "id": "_18_5_2_e64033a_1510706944742_970575_60595-slot-_18_0_5_c0402fd_1475170761179_993827_168566-slotvalue-0-literalinteger",
        "mdExtensionsIds": [],
        "ownerId": "_18_5_2_e64033a_1510706944742_970575_60595-slot-_18_0_5_c0402fd_1475170761179_993827_168566",
        "syncElementId": null,
        "appliedStereotypeInstanceId": null,
        "clientDependencyIds": [],
        "supplierDependencyIds": [],
        "name": "",
        "nameExpression": null,
        "visibility": null,
        "templateParameterId": null,
        "typeId": null,
        "value": 1.0
      }
    ],
    "definingFeatureId": "_18_0_5_c0402fd_1475170761179_993827_168566",
    "_projectId": "PROJECT-0e791c0e-16fe-422f-8f85-462ab035ce99",
    "_refId": "master",
    "_inRefIds": [
      "master"
    ],
    "_creator": "ahegedus",
    "_created": "2019-06-06T11:41:13.310+0000",
    "_elasticId": "43cc5b6f-4274-4eeb-9302-3ff1b773b10c",
    "_commitId": "03afd6ed-8180-478d-a13c-2f45973519bc",
    "_modifier": "ahegedus",
    "_modified": "2019-06-06T11:41:13.310+0000",
    "_editable": false
  }

• Requesting only one of the problematic elements: https://mms.openmbee.org/alfresco/service/projects/PROJECT-0e791c0e-16fe-422f-8f85-462ab035ce99/refs/master/elements/_18_5_2_e64033a_1510706944742_970575_60595-slot-_18_0_5_c0402fd_1475170761179_993827_168566

  {
  "elements": [
  {
    "_appliedStereotypeIds": [],
    "documentation": "",
    "type": "Slot",
    "id": "_18_5_2_e64033a_1510706944742_970575_60595-slot-_18_0_5_c0402fd_1475170761179_993827_168566",
    "mdExtensionsIds": [],
    "ownerId": "_18_5_2_e64033a_1510706944742_970575_60595",
    "syncElementId": null,
    "appliedStereotypeInstanceId": null,
    "value": [
      {
        "_appliedStereotypeIds": [],
        "documentation": "",
        "type": "LiteralInteger",
        "id": "_18_5_2_e64033a_1510706944742_970575_60595-slot-_18_0_5_c0402fd_1475170761179_993827_168566-slotvalue-0-literalinteger",
        "mdExtensionsIds": [],
        "ownerId": "_18_5_2_e64033a_1510706944742_970575_60595-slot-_18_0_5_c0402fd_1475170761179_993827_168566",
        "syncElementId": null,
        "appliedStereotypeInstanceId": null,
        "clientDependencyIds": [],
        "supplierDependencyIds": [],
        "name": "",
        "nameExpression": null,
        "visibility": null,
        "templateParameterId": null,
        "typeId": null,
        "value": 1
      }
    ],
    "definingFeatureId": "_18_0_5_c0402fd_1475170761179_993827_168566",
    "_projectId": "PROJECT-0e791c0e-16fe-422f-8f85-462ab035ce99",
    "_refId": "master",
    "_inRefIds": [
      "master"
    ],
    "_creator": "ahegedus",
    "_created": "2019-06-06T11:41:13.310+0000",
    "_elasticId": "43cc5b6f-4274-4eeb-9302-3ff1b773b10c",
    "_commitId": "03afd6ed-8180-478d-a13c-2f45973519bc",
    "_modifier": "ahegedus",
    "_modified": "2019-06-06T11:41:13.310+0000",
    "_editable": false
  }
  ]
  }

• Comparing JSON representations of the same element: