# Class ProcessInstanceEntity

OptimaJet.Workflow.Core.Entities.ProcessInstanceEntity

Represents a persistence entity used to store system data for a [ProcessInstance](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ProcessInstance/).

Namespace: [OptimaJet.Workflow.Core.Entities](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Entities/)

```csharp
public class ProcessInstanceEntity : IEntity
```

## Type Hierarchy

-   ProcessInstanceEntity Current type
    -   Implemented interfaces
        -   [IEntity](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Entities/IEntity/)

## Properties

`public string ActivityName { get; set; }` 

Gets or sets the persisted value exposed by [ProcessInstance.CurrentActivityName](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ProcessInstance/).

`public Guid Id { get; set; }` 

Gets or sets the persisted value exposed by [ProcessInstance.ProcessId](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ProcessInstance/).

`public string PreviousActivity { get; set; }` 

Gets or sets the persisted value exposed by [ProcessInstance.PreviousActivityName](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ProcessInstance/).

`public string PreviousActivityForDirect { get; set; }` 

Gets or sets the persisted value exposed by [ProcessInstance.PreviousActivityForDirectName](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ProcessInstance/), which records the source activity of the most recent transition classified as [TransitionClassifier.Direct](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/TransitionClassifier/).

`public string PreviousActivityForReverse { get; set; }` 

Gets or sets the persisted value exposed by [ProcessInstance.PreviousActivityForReverseName](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ProcessInstance/), which records the source activity of the most recent transition classified as [TransitionClassifier.Reverse](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/TransitionClassifier/).

`public string PreviousState { get; set; }` 

Gets or sets the persisted value exposed by [ProcessInstance.PreviousState](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ProcessInstance/).

`public string PreviousStateForDirect { get; set; }` 

Gets or sets the persisted value exposed by [ProcessInstance.PreviousStateForDirect](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ProcessInstance/), which records the source state of the most recent transition classified as [TransitionClassifier.Direct](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/TransitionClassifier/).

`public string PreviousStateForReverse { get; set; }` 

Gets or sets the persisted value exposed by [ProcessInstance.PreviousStateForReverse](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ProcessInstance/), which records the source state of the most recent transition classified as [TransitionClassifier.Reverse](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/TransitionClassifier/).

`public Guid? SchemeId { get; set; }` 

Gets or sets the process scheme identifier exposed by [ProcessInstance.SchemeId](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ProcessInstance/).

`public string StateName { get; set; }` 

Gets or sets the persisted value exposed by [ProcessInstance.CurrentState](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ProcessInstance/).

`public Guid? ParentProcessId { get; set; }` 

Gets or sets the identifier of the parent process instance exposed by [ProcessInstance.ParentProcessId](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ProcessInstance/).

`public Guid RootProcessId { get; set; }` 

Gets or sets the identifier of the root process instance exposed by [ProcessInstance.RootProcessId](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ProcessInstance/).

`public string TenantId { get; set; }` 

Gets or sets the tenant identifier exposed by [ProcessInstance.TenantId](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ProcessInstance/).

`public string StartingTransition { get; set; }` 

Gets or sets the name of the transition that started the subprocess, as recorded by [ProcessDefinition.StartingTransition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ProcessDefinition/).

`public string SubprocessName { get; set; }` 

Gets or sets the persisted value exposed by [ProcessInstance.SubprocessName](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ProcessInstance/).

`public DateTime CreationDate { get; set; }` 

Gets or sets the persisted value exposed by [ProcessInstance.CreationDate](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ProcessInstance/).

`public DateTime? LastTransitionDate { get; set; }` 

Gets or sets the persisted value exposed by [ProcessInstance.LastTransitionDate](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ProcessInstance/).

`public string CalendarName { get; set; }` 

Gets or sets the name of the work calendar exposed by [ProcessInstance.CalendarName](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ProcessInstance/).

## Methods

`public object GetValue(string key)` 

Gets the value of the property identified by the specified key.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `key` | `String` | The name of a supported public property declared by [ProcessInstanceEntity](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Entities/ProcessInstanceEntity/). |

### Returns

| Type | Description |
| --- | --- |
| `Object` | The property value identified by `key`. |

### Exceptions

| Type | Description |
| --- | --- |
| `ColumnNotExistsException` | `key` does not identify a supported property. |

`public void SetValue(string key, object value)` 

Sets the value of the property identified by the specified key.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `key` | `String` | The name of a supported public property declared by [ProcessInstanceEntity](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Entities/ProcessInstanceEntity/). |
| `value` | `Object` | The value to assign to the property identified by `key`. |

### Exceptions

| Type | Description |
| --- | --- |
| `ColumnNotExistsException` | `key` does not identify a supported property. |

[Previous ProcessAssignmentEntity](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Entities/ProcessAssignmentEntity/) [Next ProcessInstancePersistenceEntity](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Entities/ProcessInstancePersistenceEntity/)