# Namespace OptimaJet.Workflow.Core.Model.Builder

## Classes

-   [ProcessDefinitionBuilder](https://api.workflowengine.io/core/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.
    

## Interfaces

-   [IActivityBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IActivityBuilder/)
    
    Defines fluent operations for configuring an ordinary [ActivityDefinition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) in a process scheme.
    
-   [IActivityExceptionHandlerBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IActivityExceptionHandlerBuilder/)
    
    Provides operations for selecting how an [ActivityExceptionsHandler](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityExceptionsHandler/) responds to a matching [Exception](https://learn.microsoft.com/dotnet/api/system.exception) raised during normal activity execution.
    
-   [IActivityImplementationBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IActivityImplementationBuilder/)
    
    Defines fluent operations for setting the parameter of an [ActionDefinitionReference](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActionDefinitionReference/) stored in [ActivityDefinition.Implementation](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) or [ActivityDefinition.PreExecutionImplementation](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/).
    
-   [IActorBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IActorBuilder/)
    
    Provides fluent configuration for an [ActorDefinition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActorDefinition/) in a [ProcessDefinition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ProcessDefinition/).
    
-   [IBaseActivityBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IBaseActivityBuilder/)
    
    Defines the common activity context exposed by [IActivityBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IActivityBuilder/) and [IInlineActivityBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IInlineActivityBuilder/) while configuring a [ProcessDefinition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ProcessDefinition/).
    
-   [ICodeActionBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/ICodeActionBuilder/)
    
    Provides fluent configuration of a [CodeActionDefinition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/CodeActionDefinition/) created by the Programmatic Scheme Builder.
    
-   [ICommandBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/ICommandBuilder/)
    
    Provides fluent configuration for a [CommandDefinition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/CommandDefinition/), including its [CommandDefinition.InputParameters](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/CommandDefinition/), [CommandDefinition.Comment](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/CommandDefinition/), and localized names.
    
-   [ICommandParameterBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/ICommandParameterBuilder/)
    
    Provides fluent configuration for a [ParameterDefinitionReference](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ParameterDefinitionReference/) in [CommandDefinition.InputParameters](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/CommandDefinition/).
    
-   [IExecutionTimeoutBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IExecutionTimeoutBuilder/)
    
    Provides operations for configuring the response when an activity's [ActivityDefinition.ExecutionTimeout](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) elapses.
    
-   [IIdleTimeoutBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IIdleTimeoutBuilder/)
    
    Provides a fluent interface for selecting the destination reached when the [ActivityDefinition.IdleTimeout](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) for an activity elapses.
    
-   [IInlineActivityBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IInlineActivityBuilder/)
    
    Defines fluent operations for configuring an inline [ActivityDefinition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) that references a reusable process scheme.
    
-   [IParameterBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IParameterBuilder/)
    
    Provides fluent configuration for an explicit process parameter in a [ProcessDefinition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ProcessDefinition/).
    
-   [IProcessDefinitionBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IProcessDefinitionBuilder/)
    
    Defines fluent operations for constructing or modifying the [IProcessDefinitionBuilder.ProcessDefinition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/IProcessDefinitionBuilder/) that represents a workflow scheme.
    
-   [ITimerBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/ITimerBuilder/)
    
    Provides fluent configuration for a [TimerDefinition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/TimerDefinition/) in a process scheme.
    
-   [ITransitionBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/ITransitionBuilder/)
    
    Provides a fluent API for configuring a [TransitionDefinition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/TransitionDefinition/) within a process scheme.
    
-   [ITransitionCommandBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/ITransitionCommandBuilder/)
    
    Represents a builder for configuring the actor-based authorization restrictions in [TransitionDefinition.Restrictions](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/TransitionDefinition/) for a command-triggered transition.
    
-   [ITransitionConditionBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/ITransitionConditionBuilder/)
    
    Defines fluent operations for configuring a [ConditionType.Action](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ConditionType/) condition in [TransitionDefinition.Conditions](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/TransitionDefinition/).
    
-   [ITransitionConditionsBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/ITransitionConditionsBuilder/)
    
    Provides fluent operations for configuring the [ConditionType.Action](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ConditionType/) and [ConditionType.Expression](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ConditionType/) conditions in [TransitionDefinition.Conditions](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/TransitionDefinition/).
    
-   [ITransitionExpressionBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/ITransitionExpressionBuilder/)
    
    Defines fluent operations for configuring a [ConditionType.Expression](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ConditionType/) condition in [TransitionDefinition.Conditions](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/TransitionDefinition/).
    
-   [ITransitionParallelFinalizeBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/ITransitionParallelFinalizeBuilder/)
    
    Provides options for configuring how a [TransitionForkType.ForkEnd](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/TransitionForkType/) transition merges subprocess parameters into its parent process and continues the parent process after finalization.
    
-   [ITransitionParallelStartBuilder](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/ITransitionParallelStartBuilder/)
    
    Provides fluent subprocess-startup configuration after [ITransitionBuilder.ParallelStart()](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.Builder/ITransitionBuilder/) configures the current [TransitionDefinition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/TransitionDefinition/) with [SubprocessInOutDefinition.Start](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/SubprocessInOutDefinition/).