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Get Variable Instances (POST)

Query for variable instances that fulfill given parameters through a JSON object. This method is slightly more powerful than the Get Variable Instances method because it allows filtering by multiple variable instances of types String, Number or Boolean.

Method

POST /variable-instance

Parameters

Query Parameters

Name	Description
firstResult	Pagination of results. Specifies the index of the first result to return.
maxResults	Pagination of results. Specifies the maximum number of results to return. Will return less results if there are no more results left.
deserializeValues	Determines whether serializable variable values (typically variables that store custom Java objects) should be deserialized on server side (default `true`). 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 `true` 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.

Request Body

A JSON object with the following properties:

Name Description

variableName Filter by variable instance name.

variableNameLike Filter by the variable instance name. The parameter can include the wildcard % to express like-strategy such as: starts with (%name), ends with (name%) or contains (%name%).

processInstanceIdIn Only include variable instances which belong to one of the passed process instance ids.

executionIdIn Only include variable instances which belong to one of the passed execution ids.

caseInstanceIdIn Only include variable instances which belong to one of the passed case instance ids.

caseExecutionIdIn Only include variable instances which belong to one of the passed case execution ids.

taskIdIn Only include variable instances which belong to one of the passed task ids.

batchIdIn Only include variable instances which belong to one of the passed batch ids.

activityInstanceIdIn Only include variable instances which belong to one of the passed activity instance ids.

tenantIdIn Only include variable instances which belong to one of the passed tenant ids.

variableValues A JSON array to only include variable instances that have the certain values.
The array consists of objects with the three properties name, operator and value. name (String) is the variable name, operator (String) is the comparison operator to be used and value the variable value.
value may be String, Number or Boolean.
Valid operator values are: eq - equal to; neq - not equal to; gt - greater than; gteq - greater than or equal to; lt - lower than; lteq - lower than or equal to; like.

variableNamesIgnoreCase Match all variable names provided in variableValues case-insensitively. If set to true variableName and variablename are treated as equal.

variableValuesIgnoreCase Match all variable values provided in variableValues case-insensitively. If set to true variableValue and variablevalue are treated as equal.

sorting

A JSON array of criteria to sort the result by. Each element of the array is a JSON object that specifies one ordering. The position in the array identifies the rank of an ordering, i.e., whether it is primary, secondary, etc. The ordering objects have the following properties:

Name	Description
sortBy	Mandatory. Sort the results lexicographically by a given criterion. Valid values are `variableName`, `variableType`, `activityInstanceId` and `tenantId`.
sortOrder	Mandatory. Sort the results in a given order. Values may be `asc` for ascending order or `desc` for descending order.

Result

A JSON array of variable instance objects. Each variable instance object has the following properties:

Name	Value	Description
id	String	The id of the variable instance.
name	String	The name of the variable instance.
type	String	The value type of the variable.
value	String/Number/Boolean/Object	The variable's value. Value differs depending on the variable's type and on the `deserializeValues` parameter.
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.
processDefinitionId	String	The id of the process definition that this variable instance belongs to.
processInstanceId	String	The id of the process instance that this variable instance belongs to.
executionId	String	The id of the execution that this variable instance belongs to.
caseInstanceId	String	The id of the case instance that this variable instance belongs to.
caseExecutionId	String	The id of the case execution that this variable instance belongs to.
taskId	String	The id of the task that this variable instance belongs to.
batchId	String	The id of the batch that this variable instance belongs to.
activityInstanceId	String	The id of the activity instance that this 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.

Response Codes

Code	Media type	Description
200	application/json	Request successful.
400	application/json	Returned if some of the query parameters are invalid, for example if a `sortOrder` parameter is supplied, but no `sortBy`, or if an invalid operator for variable comparison is used. See the Introduction for the error response format.

Example

Request