Retrieves an Activity Instance (Tree) for a given process instance by id.

Method

GET /process-instance/{id}/activity-instances

Parameters

Path Parameters

Name	Description
id	The id of the process instance for which the activity instance should be retrieved.

Result

A JSON object corresponding to the Activity Instance tree of the given process instance.

The properties of an activity instance are as follows:

Name	Type	Description
id	String	The id of the activity instance.
activityId	String	The id of the activity.
activityName	String	The name of the activity.
activityType	String	The type of activity (corresponds to the XML element name in the BPMN 2.0, e.g., 'userTask').
processInstanceId	String	The id of the process instance this activity instance is part of.
processDefinitionId	String	The id of the process definition.
childActivityInstances	List of activityInstance	A list of child activity instances.
childTransitionInstances	List of transitionInstance	A list of child transition instances. A transition instance represents an execution waiting in an asynchronous continuation.
executionIds	List of String	A list of execution ids.
incidentIds	List of String	A list of incident ids.
incidents	List of Objects	A list of JSON objects containing incident specific properties: id: the id of the incident activityId: the activity id in which the incident happened

The properties of a transition instance are as follows:

Name	Type	Description
id	String	The id of the transition instance.
activityId	String	The id of the activity that this instance enters (asyncBefore job) or leaves (asyncAfter job)
activityName	String	The name of the activity that this instance enters (asyncBefore job) or leaves (asyncAfter job)
activityType	String	The type of the activity that this instance enters (asyncBefore job) or leaves (asyncAfter job). Corresponds to the XML element name in the BPMN 2.0, e.g., 'userTask'.
processInstanceId	String	The id of the process instance.
processDefinitionId	String	The id of the process definition.
executionId	String	The id of the corresponding execution.
incidentIds	List of String	A list of incident ids.
incidents	List of Objects	A list of JSON objects containing incident specific properties: id: the id of the incident activityId: the activity id in which the incident happened

Response Codes

Code	Media type	Description
200	application/json	Request successful.
404	application/json	Process instance with given id does not exist. See the Introduction for the error response format.

Example

Request

GET /process-instance/aProcessInstanceId/activity-instances

Response

{
  "id": "eca75c6b-f70c-11e9-8777-e4a7a094a9d6",
  "parentActivityInstanceId": null,
  "activityId": "invoice:2:e9d77375-f70c-11e9-8777-e4a7a094a9d6",
  "activityType": "processDefinition",
  "processInstanceId": "eca75c6b-f70c-11e9-8777-e4a7a094a9d6",
  "processDefinitionId": "invoice:2:e9d77375-f70c-11e9-8777-e4a7a094a9d6",
  "childActivityInstances": [
    {
      "id": "approveInvoice:eca89509-f70c-11e9-8777-e4a7a094a9d6",
      "parentActivityInstanceId": "eca75c6b-f70c-11e9-8777-e4a7a094a9d6",
      "activityId": "approveInvoice",
      "activityType": "userTask",
      "processInstanceId": "eca75c6b-f70c-11e9-8777-e4a7a094a9d6",
      "processDefinitionId": "invoice:2:e9d77375-f70c-11e9-8777-e4a7a094a9d6",
      "childActivityInstances": [],
      "childTransitionInstances": [],
      "executionIds": [
        "eca75c6b-f70c-11e9-8777-e4a7a094a9d6"
      ],
      "activityName": "Approve Invoice",
      "incidentIds": [
        "648d7e21-f71c-11e9-a725-e4a7a094a9d6"
      ],
      "incidents": [
        {
          "id": "648d7e21-f71c-11e9-a725-e4a7a094a9d6",
          "activityId": "AttachedTimerBoundaryEvent"
        }
      ]
    }
  ],
  "childTransitionInstances": [],
  "executionIds": [
    "eca75c6b-f70c-11e9-8777-e4a7a094a9d6"
  ],
  "activityName": "Invoice Receipt",
  "incidentIds": null,
  "incidents": null
}