Method

GET

Parameters

If set to true, a serializable variable will be deserialized on server side and transformed to JSON using Jackson's POJO/bean property introspection feature. Note that this requires the Java classes of the variable value to be on the REST API's classpath.

If set to false, a serializable variable will be returned in its serialized format. For example, a variable that is serialized as XML will be returned as a JSON string containing XML.

Note: While is the default value for reasons of backward compatibility, we recommend setting this parameter to false when developing web applications that are independent of the Java process applications deployed to the engine.

Result

A user object with the following properties:


|value|String / Number / Boolean / Object| The variable's value. Value differs depending on the variable's type and on the parameter.|type|String|The value type of the variable.|valueInfo|Object| A JSON object containing additional, value-type-dependent properties.
For variables of type Object, the following properties are returned:

  • objectTypeName: A string representation of the object's type name.

  • serializationDataFormat: The serialization format used to store the variable.
    |Name|Value|Description
    |——-
    |value|String / Number / Boolean / Object| The variable's value. Value differs depending on the variable's type and on the deserializeValue parameter.
    |type|String|The value type of the variable.
    |valueInfo|Object| A JSON object containing additional, value-type-dependent properties.
    For variables of type Object, the following properties are returned:

  • serializationDataFormat: The serialization format used to store the variable.
    |valueInfo|Object|A JSON object containing additional, value-type-dependent properties.
    For variables of type , the following properties are returned:

  • serializationDataFormat: The serialization format used to store the variable.
    |processDefinitionKey|String|The key of the process definition the variable instance belongs to.
    |processDefinitionId|String|The id of the process definition the variable instance belongs to.
    |processInstanceId|String|The id the process instance belongs to.
    |executionId|String|The execution id the variable instance belongs to.
    |activityInstanceId|String|The id of the activity instance in which the variable is valid.
    |caseDefinitionKey|String|The key of the case definition the variable instance belongs to.
    |caseDefinitionId|String|The id of the case definition the variable instance belongs to.
    |caseInstanceId|String|The case instance id the variable instance belongs to.
    |caseExecutionId|String|The case execution id the variable instance belongs to.
    |taskId|String|The id of the task the variable instance belongs to.
    |tenantId|String|The id of the tenant that this variable instance belongs to.
    |errorMessage|String|An error message in case a Java Serialized Object could not be de-serialized.
    |state|String|The current state of the variable. Can be 'CREATED' or 'DELETED'.

    • Response Codes

    Example

    GET /history/variable-instance/someId

    Status 200.