# Class ProcessDefinitionBuilder

OptimaJet.Workflow.Core.Model.Builder.ProcessDefinitionBuilder

Provides the fluent API for constructing or modifying the [ProcessDefinitionBuilder.ProcessDefinition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/ProcessDefinitionBuilder/) that represents a workflow scheme.

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

```csharp
public sealed class ProcessDefinitionBuilder : IProcessDefinitionBuilder
```

## Type Hierarchy

-   ProcessDefinitionBuilder Current type
    -   Implemented interfaces
        -   [IProcessDefinitionBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IProcessDefinitionBuilder/)

## Properties

`public ProcessDefinition ProcessDefinition { get; }` 

Gets the [IProcessDefinitionBuilder.ProcessDefinition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IProcessDefinitionBuilder/) that represents the workflow scheme being built.

## Methods

`public static IProcessDefinitionBuilder Create(string name)` 

Creates an [IProcessDefinitionBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IProcessDefinitionBuilder/) backed by a new [ProcessDefinitionBuilder.ProcessDefinition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/ProcessDefinitionBuilder/).

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `name` | `String` | The workflow scheme name. |

### Returns

| Type | Description |
| --- | --- |
| `IProcessDefinitionBuilder` | An [IProcessDefinitionBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IProcessDefinitionBuilder/) for the new [ProcessDefinitionBuilder.ProcessDefinition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/ProcessDefinitionBuilder/). |

`public static IProcessDefinitionBuilder WithProcessDefinition(ProcessDefinition processDefinition)` 

Creates an [IProcessDefinitionBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IProcessDefinitionBuilder/) backed by a clone of `processDefinition`.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `processDefinition` | `ProcessDefinition` | The [ProcessDefinitionBuilder.ProcessDefinition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/ProcessDefinitionBuilder/) to clone. |

### Returns

| Type | Description |
| --- | --- |
| `IProcessDefinitionBuilder` | An [IProcessDefinitionBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IProcessDefinitionBuilder/) backed by a clone of `processDefinition`. |

`public static IProcessDefinitionBuilder WithMutableProcessDefinition(ProcessDefinition processDefinition)` 

Creates an [IProcessDefinitionBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IProcessDefinitionBuilder/) backed directly by `processDefinition`.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `processDefinition` | `ProcessDefinition` | The [ProcessDefinitionBuilder.ProcessDefinition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/ProcessDefinitionBuilder/) to modify. |

### Returns

| Type | Description |
| --- | --- |
| `IProcessDefinitionBuilder` | An [IProcessDefinitionBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IProcessDefinitionBuilder/) backed by `processDefinition`. |

`public IActorBuilder CreateActor(string name, string rule)` 

Creates an [ActorDefinition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActorDefinition/) that references a workflow rule.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `name` | `String` | The actor name. |
| `rule` | `String` | The name of the workflow rule referenced by the actor. |

### Returns

| Type | Description |
| --- | --- |
| `IActorBuilder` | An [IActorBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IActorBuilder/) positioned at the created actor. |

### Exceptions

| Type | Description |
| --- | --- |
| `ActorAlreadyExistsException` | The process definition already contains an actor named `name`. |

`public IActorBuilder CreateOrUpdateActor(string name, string rule)` 

Creates an [ActorDefinition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActorDefinition/) or updates the [ActorDefinition.Rule](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActorDefinition/) of the existing actor named `name`.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `name` | `String` | The actor name. |
| `rule` | `String` | The name of the workflow rule referenced by the actor. |

### Returns

| Type | Description |
| --- | --- |
| `IActorBuilder` | An [IActorBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IActorBuilder/) positioned at the created or existing actor. |

`public IActorBuilder UpdateActor(string name)` 

Selects the existing [ActorDefinition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActorDefinition/) named `name` for modification.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `name` | `String` | The actor name. |

### Returns

| Type | Description |
| --- | --- |
| `IActorBuilder` | An [IActorBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IActorBuilder/) positioned at the selected actor. |

### Exceptions

| Type | Description |
| --- | --- |
| `ActorNotFoundException` | The process definition does not contain an actor named `name`. |

`public IProcessDefinitionBuilder DeleteActor(string name)` 

Deletes the actor named `name` from the process definition.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `name` | `String` | The actor name. |

### Returns

| Type | Description |
| --- | --- |
| `IProcessDefinitionBuilder` | This [IProcessDefinitionBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IProcessDefinitionBuilder/). |

### Remarks

When the actor exists, the method also removes every [TransitionDefinition.Restrictions](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/TransitionDefinition/) entry that references it. If no actor has the requested name, the process definition is unchanged.

`public IParameterBuilder CreateParameter(string name, Type type, ParameterPurpose purpose = ParameterPurpose.Temporary)` 

Creates a user-defined [ParameterDefinition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ParameterDefinition/).

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `name` | `String` | The parameter name. |
| `type` | `Type` | The .NET [Type](https://learn.microsoft.com/dotnet/api/system.type) of the parameter value. |
| `purpose` | `ParameterPurpose` | The [ParameterPurpose](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ParameterPurpose/) that controls how the parameter is managed. |

### Returns

| Type | Description |
| --- | --- |
| `IParameterBuilder` | An [IParameterBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IParameterBuilder/) positioned at the created parameter. |

### Exceptions

| Type | Description |
| --- | --- |
| `ParameterAlreadyExistsException` | The process definition already contains a parameter named `name`. |
| `InvalidOperationException` | `purpose` is [ParameterPurpose.System](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ParameterPurpose/). |

`public IParameterBuilder CreateOrUpdateParameter(string name, Type type, ParameterPurpose purpose)` 

Creates a user-defined [ParameterDefinition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ParameterDefinition/) or updates the type and purpose of the existing parameter named `name`.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `name` | `String` | The parameter name. |
| `type` | `Type` | The .NET [Type](https://learn.microsoft.com/dotnet/api/system.type) of the parameter value. |
| `purpose` | `ParameterPurpose` | The [ParameterPurpose](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ParameterPurpose/) that controls how the parameter is managed. |

### Returns

| Type | Description |
| --- | --- |
| `IParameterBuilder` | An [IParameterBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IParameterBuilder/) positioned at the created or existing parameter. |

### Exceptions

| Type | Description |
| --- | --- |
| `InvalidOperationException` | `purpose` is [ParameterPurpose.System](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ParameterPurpose/); or `purpose` is [ParameterPurpose.Persistence](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ParameterPurpose/) and an existing parameter with an initial value would change its `type`. |

### Remarks

Setting `purpose` to [ParameterPurpose.Temporary](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ParameterPurpose/) clears [ParameterDefinition.InitialValue](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ParameterDefinition/).

`public IParameterBuilder UpdateParameter(string name)` 

Selects the existing [ParameterDefinition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ParameterDefinition/) named `name` for modification.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `name` | `String` | The parameter name. |

### Returns

| Type | Description |
| --- | --- |
| `IParameterBuilder` | An [IParameterBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IParameterBuilder/) positioned at the selected parameter. |

### Exceptions

| Type | Description |
| --- | --- |
| `ParameterNotFoundException` | The process definition does not contain a parameter named `name`. |

`public IProcessDefinitionBuilder DeleteParameter(string name)` 

Deletes the parameter named `name` from the process definition.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `name` | `String` | The parameter name. |

### Returns

| Type | Description |
| --- | --- |
| `IProcessDefinitionBuilder` | This [IProcessDefinitionBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IProcessDefinitionBuilder/). |

### Remarks

When the parameter exists, the method also removes references to it from [CommandDefinition.InputParameters](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/CommandDefinition/). If no parameter has the requested name, the process definition is unchanged.

`public ICommandBuilder CreateCommand(string name)` 

Creates a [CommandDefinition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/CommandDefinition/) for a named command trigger.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `name` | `String` | The command name. |

### Returns

| Type | Description |
| --- | --- |
| `ICommandBuilder` | An [ICommandBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/ICommandBuilder/) positioned at the created command. |

### Exceptions

| Type | Description |
| --- | --- |
| `CommandAlreadyExistsException` | The process definition already contains a command named `name`. |

`public ICommandBuilder CreateOrUpdateCommand(string name)` 

Creates a [CommandDefinition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/CommandDefinition/) or selects the existing command named `name`.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `name` | `String` | The command name. |

### Returns

| Type | Description |
| --- | --- |
| `ICommandBuilder` | An [ICommandBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/ICommandBuilder/) positioned at the created or existing command. |

`public ICommandBuilder UpdateCommand(string name)` 

Selects the existing [CommandDefinition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/CommandDefinition/) named `name` for modification.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `name` | `String` | The command name. |

### Returns

| Type | Description |
| --- | --- |
| `ICommandBuilder` | An [ICommandBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/ICommandBuilder/) positioned at the selected command. |

### Exceptions

| Type | Description |
| --- | --- |
| `CommandNotFoundException` | The process definition does not contain a command named `name`. |

`public IProcessDefinitionBuilder DeleteCommand(string name)` 

Deletes the command named `name` from the process definition.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `name` | `String` | The command name. |

### Returns

| Type | Description |
| --- | --- |
| `IProcessDefinitionBuilder` | This [IProcessDefinitionBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IProcessDefinitionBuilder/). |

### Remarks

When the command exists, transitions whose [TransitionDefinition.Trigger](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/TransitionDefinition/) references it are changed to use [TriggerDefinition.Auto](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/TriggerDefinition/), and their [TransitionDefinition.Restrictions](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/TransitionDefinition/) are cleared. If no command has the requested name, the process definition is unchanged.

`public ITimerBuilder CreateTimer(string name)` 

Creates a [TimerDefinition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/TimerDefinition/) whose [TimerDefinition.Type](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/TimerDefinition/) is [TimerType.Interval](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/TimerType/) and whose [TimerDefinition.Value](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/TimerDefinition/) is `0`.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `name` | `String` | The timer name. |

### Returns

| Type | Description |
| --- | --- |
| `ITimerBuilder` | An [ITimerBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/ITimerBuilder/) positioned at the created timer. |

### Exceptions

| Type | Description |
| --- | --- |
| `TimerAlreadyExistsException` | The process definition already contains a timer named `name`. |

`public ITimerBuilder CreateOrUpdateTimer(string name)` 

Creates a [TimerDefinition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/TimerDefinition/) whose [TimerDefinition.Type](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/TimerDefinition/) is [TimerType.Interval](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/TimerType/) and whose [TimerDefinition.Value](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/TimerDefinition/) is `0`, or selects the existing timer named `name`.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `name` | `String` | The timer name. |

### Returns

| Type | Description |
| --- | --- |
| `ITimerBuilder` | An [ITimerBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/ITimerBuilder/) positioned at the created or existing timer. |

`public ITimerBuilder UpdateTimer(string name)` 

Selects the existing [TimerDefinition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/TimerDefinition/) named `name` for modification.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `name` | `String` | The timer name. |

### Returns

| Type | Description |
| --- | --- |
| `ITimerBuilder` | An [ITimerBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/ITimerBuilder/) positioned at the selected timer. |

### Exceptions

| Type | Description |
| --- | --- |
| `TimerNotFoundException` | The process definition does not contain a timer named `name`. |

`public IProcessDefinitionBuilder DeleteTimer(string name)` 

Deletes the timer named `name` from the process definition.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `name` | `String` | The timer name. |

### Returns

| Type | Description |
| --- | --- |
| `IProcessDefinitionBuilder` | This [IProcessDefinitionBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IProcessDefinitionBuilder/). |

### Remarks

When the timer exists, transitions whose [TransitionDefinition.Trigger](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/TransitionDefinition/) references it are changed to use [TriggerDefinition.Auto](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/TriggerDefinition/). If no timer has the requested name, the process definition is unchanged.

`public IActivityBuilder CreateActivity(string name)` 

Creates an [ActivityDefinition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) whose [ActivityDefinition.ActivityType](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) is [ActivityType.Ordinary](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityType/).

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `name` | `String` | The activity name. |

### Returns

| Type | Description |
| --- | --- |
| `IActivityBuilder` | An [IActivityBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IActivityBuilder/) positioned at the created activity. |

### Exceptions

| Type | Description |
| --- | --- |
| `ActivityAlreadyExistsException` | The process definition already contains an activity named `name`. |

`public IActivityBuilder AddActivity(ActivityDefinition activity)` 

Adds an existing [ActivityDefinition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) to the process definition if needed and selects it for modification.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `activity` | `ActivityDefinition` | The [ActivityDefinition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) to add or select. |

### Returns

| Type | Description |
| --- | --- |
| `IActivityBuilder` | An [IActivityBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IActivityBuilder/) positioned at `activity`. |

### Exceptions

| Type | Description |
| --- | --- |
| `ActivityAlreadyExistsException` | The process definition contains another activity with the same name as `activity`. |

`public IInlineActivityBuilder CreateInlineActivity(string name, string schemeCode)` 

Creates an inline [ActivityDefinition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) that references another process scheme.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `name` | `String` | The inline activity name. |
| `schemeCode` | `String` | The process scheme code assigned to [ActivityDefinition.SchemeCode](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/). |

### Returns

| Type | Description |
| --- | --- |
| `IInlineActivityBuilder` | An [IInlineActivityBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IInlineActivityBuilder/) positioned at the created inline activity. |

### Exceptions

| Type | Description |
| --- | --- |
| `ActivityAlreadyExistsException` | The process definition already contains an activity named `name`. |

`public IActivityBuilder CreateOrUpdateActivity(string name)` 

Creates an ordinary [ActivityDefinition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) or selects the existing ordinary activity named `name`.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `name` | `String` | The activity name. |

### Returns

| Type | Description |
| --- | --- |
| `IActivityBuilder` | An [IActivityBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IActivityBuilder/) positioned at the created or existing activity. |

### Exceptions

| Type | Description |
| --- | --- |
| `WrongActivityTypeException` | The process definition contains an activity named `name` whose [ActivityDefinition.ActivityType](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) is not [ActivityType.Ordinary](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityType/). |

`public IInlineActivityBuilder CreateOrUpdateInlineActivity(string name, string schemeCode)` 

Creates an inline [ActivityDefinition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) or updates the referenced process scheme of the existing inline activity named `name`.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `name` | `String` | The inline activity name. |
| `schemeCode` | `String` | The process scheme code assigned to [ActivityDefinition.SchemeCode](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/). |

### Returns

| Type | Description |
| --- | --- |
| `IInlineActivityBuilder` | An [IInlineActivityBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IInlineActivityBuilder/) positioned at the created or existing inline activity. |

### Exceptions

| Type | Description |
| --- | --- |
| `WrongActivityTypeException` | The process definition contains an activity named `name` whose [ActivityDefinition.ActivityType](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) is not [ActivityType.Inline](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityType/). |

`public IActivityBuilder UpdateActivity(string name)` 

Selects the existing ordinary [ActivityDefinition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) named `name` for modification.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `name` | `String` | The activity name. |

### Returns

| Type | Description |
| --- | --- |
| `IActivityBuilder` | An [IActivityBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IActivityBuilder/) positioned at the selected activity. |

### Exceptions

| Type | Description |
| --- | --- |
| `ActivityNotFoundException` | The process definition does not contain an activity named `name`. |
| `WrongActivityTypeException` | The activity named `name` has an [ActivityDefinition.ActivityType](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) other than [ActivityType.Ordinary](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityType/). |

`public IInlineActivityBuilder UpdateInlineActivity(string name)` 

Selects the existing inline [ActivityDefinition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) named `name` for modification.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `name` | `String` | The inline activity name. |

### Returns

| Type | Description |
| --- | --- |
| `IInlineActivityBuilder` | An [IInlineActivityBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IInlineActivityBuilder/) positioned at the selected inline activity. |

### Exceptions

| Type | Description |
| --- | --- |
| `ActivityNotFoundException` | The process definition does not contain an activity named `name`. |
| `WrongActivityTypeException` | The activity named `name` has an [ActivityDefinition.ActivityType](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) other than [ActivityType.Inline](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityType/). |

`public IActivityBuilder UpdateActivity(ActivityDefinition activity)` 

Selects an existing ordinary [ActivityDefinition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) for modification.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `activity` | `ActivityDefinition` | The [ActivityDefinition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) to select. |

### Returns

| Type | Description |
| --- | --- |
| `IActivityBuilder` | An [IActivityBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IActivityBuilder/) positioned at `activity`. |

### Exceptions

| Type | Description |
| --- | --- |
| `ActivityNotFoundException` | `activity` is not part of the process definition. |
| `WrongActivityTypeException` | `activity` has an [ActivityDefinition.ActivityType](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) other than [ActivityType.Ordinary](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityType/). |

`public IInlineActivityBuilder UpdateInlineActivity(ActivityDefinition activity)` 

Selects an existing inline [ActivityDefinition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) for modification.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `activity` | `ActivityDefinition` | The inline [ActivityDefinition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) to select. |

### Returns

| Type | Description |
| --- | --- |
| `IInlineActivityBuilder` | An [IInlineActivityBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IInlineActivityBuilder/) positioned at `activity`. |

### Exceptions

| Type | Description |
| --- | --- |
| `ActivityNotFoundException` | `activity` is not part of the process definition. |
| `WrongActivityTypeException` | `activity` has an [ActivityDefinition.ActivityType](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) other than [ActivityType.Inline](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityType/). |

`public IProcessDefinitionBuilder DeleteActivity(string name)` 

Deletes the activity named `name` from the process definition.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `name` | `String` | The activity name. |

### Returns

| Type | Description |
| --- | --- |
| `IProcessDefinitionBuilder` | This [IProcessDefinitionBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IProcessDefinitionBuilder/). |

### Remarks

When the activity exists, the method also deletes every [TransitionDefinition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/TransitionDefinition/) whose [TransitionDefinition.From](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/TransitionDefinition/) or [TransitionDefinition.To](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/TransitionDefinition/) references that activity. If no activity has the requested name, the process definition is unchanged.

`public IProcessDefinitionBuilder DeleteActivity(ActivityDefinition activity)` 

Deletes an [ActivityDefinition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) and every transition connected to it.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `activity` | `ActivityDefinition` | The [ActivityDefinition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) to delete. |

### Returns

| Type | Description |
| --- | --- |
| `IProcessDefinitionBuilder` | This [IProcessDefinitionBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IProcessDefinitionBuilder/). |

`public ITransitionBuilder CreateTransition(string name, ActivityDefinition from, ActivityDefinition to)` 

Creates a [TransitionDefinition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/TransitionDefinition/) that connects two activities in the process definition.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `name` | `String` | The transition name. |
| `from` | `ActivityDefinition` | The source [ActivityDefinition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/). |
| `to` | `ActivityDefinition` | The target [ActivityDefinition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/). |

### Returns

| Type | Description |
| --- | --- |
| `ITransitionBuilder` | An [ITransitionBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/ITransitionBuilder/) positioned at the created transition. |

### Exceptions

| Type | Description |
| --- | --- |
| `TransitionAlreadyExistsException` | The process definition already contains a transition named `name`. |
| `ActivityNotFoundException` | `from` or `to` is not part of the process definition. |

`public ITransitionBuilder CreateOrUpdateTransition(string name, ActivityDefinition from, ActivityDefinition to)` 

Creates a [TransitionDefinition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/TransitionDefinition/) or changes [TransitionDefinition.From](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/TransitionDefinition/) and [TransitionDefinition.To](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/TransitionDefinition/) on the existing transition named `name`.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `name` | `String` | The transition name. |
| `from` | `ActivityDefinition` | The source [ActivityDefinition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/). |
| `to` | `ActivityDefinition` | The target [ActivityDefinition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/). |

### Returns

| Type | Description |
| --- | --- |
| `ITransitionBuilder` | An [ITransitionBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/ITransitionBuilder/) positioned at the created or existing transition. |

`public ITransitionBuilder UpdateTransition(string name)` 

Selects the existing [TransitionDefinition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/TransitionDefinition/) named `name` for modification.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `name` | `String` | The transition name. |

### Returns

| Type | Description |
| --- | --- |
| `ITransitionBuilder` | An [ITransitionBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/ITransitionBuilder/) positioned at the selected transition. |

### Exceptions

| Type | Description |
| --- | --- |
| `TransitionNotFoundException` | The process definition does not contain a transition named `name`. |

`public ITransitionBuilder UpdateTransition(TransitionDefinition transition)` 

Selects an existing [TransitionDefinition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/TransitionDefinition/) for modification.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `transition` | `TransitionDefinition` | The [TransitionDefinition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/TransitionDefinition/) to select. |

### Returns

| Type | Description |
| --- | --- |
| `ITransitionBuilder` | An [ITransitionBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/ITransitionBuilder/) positioned at `transition`. |

### Exceptions

| Type | Description |
| --- | --- |
| `TransitionNotFoundException` | `transition` is not part of the process definition. |

`public IProcessDefinitionBuilder DeleteTransition(TransitionDefinition transition)` 

Deletes a [TransitionDefinition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/TransitionDefinition/) from the process definition.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `transition` | `TransitionDefinition` | The [TransitionDefinition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/TransitionDefinition/) to delete. |

### Returns

| Type | Description |
| --- | --- |
| `IProcessDefinitionBuilder` | This [IProcessDefinitionBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IProcessDefinitionBuilder/). |

`public IProcessDefinitionBuilder DeleteTransition(string name)` 

Deletes the transition named `name` from the process definition.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `name` | `String` | The transition name. |

### Returns

| Type | Description |
| --- | --- |
| `IProcessDefinitionBuilder` | This [IProcessDefinitionBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IProcessDefinitionBuilder/). |

### Remarks

If no transition has the requested name, the process definition is unchanged.

`public ICodeActionBuilder CreateCodeAction(string name)` 

Creates a [CodeActionDefinition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/CodeActionDefinition/) that implements an action and has the [CodeActionType.Action](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/CodeActionType/) runtime contract.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `name` | `String` | The code action name. |

### Returns

| Type | Description |
| --- | --- |
| `ICodeActionBuilder` | An [ICodeActionBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/ICodeActionBuilder/) positioned at the created code action. |

### Exceptions

| Type | Description |
| --- | --- |
| `CodeActionAlreadyExistsException` | The process definition already contains a [CodeActionType.Action](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/CodeActionType/) code action named `name`. |

`public ICodeActionBuilder CreateCodeCondition(string name)` 

Creates a [CodeActionDefinition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/CodeActionDefinition/) that evaluates a transition condition and has the [CodeActionType.Condition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/CodeActionType/) runtime contract.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `name` | `String` | The code condition name. |

### Returns

| Type | Description |
| --- | --- |
| `ICodeActionBuilder` | An [ICodeActionBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/ICodeActionBuilder/) positioned at the created code condition. |

### Exceptions

| Type | Description |
| --- | --- |
| `CodeActionAlreadyExistsException` | The process definition already contains a [CodeActionType.Condition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/CodeActionType/) code action named `name`. |

`public ICodeActionBuilder CreateCodeRuleGet(string name)` 

Creates a [CodeActionDefinition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/CodeActionDefinition/) that gets workflow participant identities for a rule and has the [CodeActionType.RuleGet](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/CodeActionType/) runtime contract.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `name` | `String` | The code rule name. |

### Returns

| Type | Description |
| --- | --- |
| `ICodeActionBuilder` | An [ICodeActionBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/ICodeActionBuilder/) positioned at the created code rule. |

### Exceptions

| Type | Description |
| --- | --- |
| `CodeActionAlreadyExistsException` | The process definition already contains a [CodeActionType.RuleGet](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/CodeActionType/) code action named `name`. |

`public ICodeActionBuilder CreateCodeRuleCheck(string name)` 

Creates a [CodeActionDefinition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/CodeActionDefinition/) that determines whether a workflow participant identity satisfies a rule and has the [CodeActionType.RuleCheck](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/CodeActionType/) runtime contract.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `name` | `String` | The code rule name. |

### Returns

| Type | Description |
| --- | --- |
| `ICodeActionBuilder` | An [ICodeActionBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/ICodeActionBuilder/) positioned at the created code rule. |

### Exceptions

| Type | Description |
| --- | --- |
| `CodeActionAlreadyExistsException` | The process definition already contains a [CodeActionType.RuleCheck](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/CodeActionType/) code action named `name`. |

`public IProcessDefinitionBuilder SetCommonUsings(params string[] usings)` 

Replaces the namespace imports in [ProcessDefinition.CodeActionsCommonUsings](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ProcessDefinition/) that are shared by compiled code actions.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `usings` | `String[]` | The namespace imports to store. Empty and white-space entries are ignored, and duplicates are removed. |

### Returns

| Type | Description |
| --- | --- |
| `IProcessDefinitionBuilder` | This [IProcessDefinitionBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IProcessDefinitionBuilder/). |

### Exceptions

| Type | Description |
| --- | --- |
| `ArgumentException` | An entry in `usings` contains a semicolon. |

`public IProcessDefinitionBuilder AddCommonUsings(params string[] usings)` 

Adds namespace imports to [ProcessDefinition.CodeActionsCommonUsings](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ProcessDefinition/) for compiled code actions.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `usings` | `String[]` | The namespace imports to add. Empty and white-space entries are ignored, and duplicates are removed. |

### Returns

| Type | Description |
| --- | --- |
| `IProcessDefinitionBuilder` | This [IProcessDefinitionBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IProcessDefinitionBuilder/). |

### Exceptions

| Type | Description |
| --- | --- |
| `ArgumentException` | An entry in `usings` contains a semicolon. |

`public IProcessDefinitionBuilder RemoveCommonUsings(params string[] usings)` 

Removes namespace imports from [ProcessDefinition.CodeActionsCommonUsings](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ProcessDefinition/) for compiled code actions.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `usings` | `String[]` | The namespace imports to remove. |

### Returns

| Type | Description |
| --- | --- |
| `IProcessDefinitionBuilder` | This [IProcessDefinitionBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IProcessDefinitionBuilder/). |

`public IProcessDefinitionBuilder ClearCommonUsings()` 

Clears [ProcessDefinition.CodeActionsCommonUsings](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ProcessDefinition/), which contains namespace imports shared by compiled code actions.

### Returns

| Type | Description |
| --- | --- |
| `IProcessDefinitionBuilder` | This [IProcessDefinitionBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IProcessDefinitionBuilder/). |

`public IProcessDefinitionBuilder ForEachActivity(Action<IActivityBuilder> action)` 

Invokes `action` for each activity in the process definition.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `action` | `Action<IActivityBuilder>` | The callback to invoke with an [IActivityBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IActivityBuilder/) positioned at each activity. |

### Returns

| Type | Description |
| --- | --- |
| `IProcessDefinitionBuilder` | This [IProcessDefinitionBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IProcessDefinitionBuilder/). |

`public IProcessDefinitionBuilder ForEachTransition(Action<ITransitionBuilder> action)` 

Invokes `action` for each transition in the process definition.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `action` | `Action<ITransitionBuilder>` | The callback to invoke with an [ITransitionBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/ITransitionBuilder/) positioned at each transition. |

### Returns

| Type | Description |
| --- | --- |
| `IProcessDefinitionBuilder` | This [IProcessDefinitionBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IProcessDefinitionBuilder/). |

`public IProcessDefinitionBuilder Inlined()` 

Sets [ProcessDefinition.CanBeInlined](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ProcessDefinition/) so that this process scheme can be inlined into another process scheme.

### Returns

| Type | Description |
| --- | --- |
| `IProcessDefinitionBuilder` | This [IProcessDefinitionBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IProcessDefinitionBuilder/). |

`public IProcessDefinitionBuilder NotInlined()` 

Clears [ProcessDefinition.CanBeInlined](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ProcessDefinition/) so that this process scheme cannot be inlined into another process scheme.

### Returns

| Type | Description |
| --- | --- |
| `IProcessDefinitionBuilder` | This [IProcessDefinitionBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IProcessDefinitionBuilder/). |

`public IProcessDefinitionBuilder SetTenantId(string? tenantId)` 

Sets [ProcessDefinition.TenantId](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ProcessDefinition/) for the process scheme.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `tenantId` | `String` | The tenant identifier, or [null](https://learn.microsoft.com/dotnet/csharp/language-reference/keywords/null) for a shared process scheme. |

### Returns

| Type | Description |
| --- | --- |
| `IProcessDefinitionBuilder` | This [IProcessDefinitionBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IProcessDefinitionBuilder/). |

`public IProcessDefinitionBuilder GetActivity(string name, out ActivityDefinition activity)` 

Finds the [ActivityDefinition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) named `name` in the process definition.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `name` | `String` | The activity name. |
| `activity` | `ActivityDefinition` | When the method returns, the matching [ActivityDefinition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/). |

### Returns

| Type | Description |
| --- | --- |
| `IProcessDefinitionBuilder` | This [IProcessDefinitionBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IProcessDefinitionBuilder/). |

### Exceptions

| Type | Description |
| --- | --- |
| `ActivityNotFoundException` | The process definition does not contain an activity named `name`. |

`public IProcessDefinitionBuilder GetTransition(string name, out TransitionDefinition transition)` 

Finds the [TransitionDefinition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/TransitionDefinition/) named `name` in the process definition.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `name` | `String` | The transition name. |
| `transition` | `TransitionDefinition` | When the method returns, the matching [TransitionDefinition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/TransitionDefinition/). |

### Returns

| Type | Description |
| --- | --- |
| `IProcessDefinitionBuilder` | This [IProcessDefinitionBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IProcessDefinitionBuilder/). |

### Exceptions

| Type | Description |
| --- | --- |
| `TransitionNotFoundException` | The process definition does not contain a transition named `name`. |

`public IProcessDefinitionBuilder CreateOrUpdateLocalizationForState(string stateName, CultureInfo culture, string value, bool isDefault = false)` 

Creates or updates a business state name translation for a culture.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `stateName` | `String` | The internal business state name. |
| `culture` | `CultureInfo` | The [CultureInfo](https://learn.microsoft.com/dotnet/api/system.globalization.cultureinfo) for the translation. |
| `value` | `String` | The translated business state name. |
| `isDefault` | `Boolean` | [true](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool) to use the translation as a fallback when the requested culture has no translation; otherwise, [false](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool). |

### Returns

| Type | Description |
| --- | --- |
| `IProcessDefinitionBuilder` | This [IProcessDefinitionBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IProcessDefinitionBuilder/). |

`public IProcessDefinitionBuilder DeleteLocalizationForState(string stateName, CultureInfo culture)` 

Deletes the business state name translation for a culture.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `stateName` | `String` | The internal business state name. |
| `culture` | `CultureInfo` | The [CultureInfo](https://learn.microsoft.com/dotnet/api/system.globalization.cultureinfo) whose translation is deleted. |

### Returns

| Type | Description |
| --- | --- |
| `IProcessDefinitionBuilder` | This [IProcessDefinitionBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IProcessDefinitionBuilder/). |

`public IProcessDefinitionBuilder DeleteAllLocalizationsForState(string stateName)` 

Deletes all translations for a business state name.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `stateName` | `String` | The internal business state name. |

### Returns

| Type | Description |
| --- | --- |
| `IProcessDefinitionBuilder` | This [IProcessDefinitionBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IProcessDefinitionBuilder/). |

[Previous ITransitionParallelStartBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/ITransitionParallelStartBuilder/) [Next IWorkflowParser<TSchemeMedium>](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Parser/IWorkflowParser-TSchemeMedium/)