# Class ConditionDefinition

OptimaJet.Workflow.Core.Model.ConditionDefinition

Represents a [bool](https://learn.microsoft.com/dotnet/api/system.boolean) guard in [TransitionDefinition.Conditions](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/TransitionDefinition/) that determines whether a transition can be selected.

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

```csharp
public sealed class ConditionDefinition
```

## Properties

`[JsonConverter(typeof(StringEnumConverter))] [JsonConverter(typeof(SystemStringEnumConverter<ConditionType>))] public ConditionType Type { get; set; }` 

Gets or sets the [ConditionType](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ConditionType/) that determines how the condition is evaluated.

`public ActionDefinitionReference Action { get; set; }` 

Gets or sets the [ActionDefinitionReference](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActionDefinitionReference/) that identifies the condition logic evaluated when [ConditionDefinition.Type](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ConditionDefinition/) is [ConditionType.Action](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ConditionType/).

`public string Expression { get; set; }` 

Gets or sets the C# [bool](https://learn.microsoft.com/dotnet/api/system.boolean) expression evaluated when [ConditionDefinition.Type](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ConditionDefinition/) is [ConditionType.Expression](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ConditionType/).

`public bool? ResultOnPreExecution { get; set; }` 

Gets or sets the condition result to use during pre-execution simulation.

`public bool ConditionInversion { get; set; }` 

Gets or sets a value indicating whether to negate the evaluated result of a [ConditionType.Action](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ConditionType/) or [ConditionType.Expression](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ConditionType/) condition.

`public static ConditionDefinition Always { get; }` 

Gets a new [ConditionDefinition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ConditionDefinition/) whose [ConditionDefinition.Type](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ConditionDefinition/) is [ConditionType.Always](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ConditionType/).

`public static ConditionDefinition Otherwise { get; }` 

Gets a new [ConditionDefinition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ConditionDefinition/) whose [ConditionDefinition.Type](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ConditionDefinition/) is [ConditionType.Otherwise](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ConditionType/).

## Methods

`public ConditionDefinition Clone()` 

Creates a copy of this condition and clones its [ConditionDefinition.Action](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ConditionDefinition/) reference when present.

### Returns

| Type | Description |
| --- | --- |
| `ConditionDefinition` | A new [ConditionDefinition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ConditionDefinition/) containing the copied condition data. |

`public static ConditionDefinition CreateAlwaysCondition()` 

Creates a condition whose [ConditionDefinition.Type](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ConditionDefinition/) is [ConditionType.Always](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ConditionType/).

### Returns

| Type | Description |
| --- | --- |
| `ConditionDefinition` | A new [ConditionDefinition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ConditionDefinition/) that is always satisfied. |

`public static ConditionDefinition CreateOtherwiseCondition()` 

Creates a condition whose [ConditionDefinition.Type](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ConditionDefinition/) is [ConditionType.Otherwise](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ConditionType/).

### Returns

| Type | Description |
| --- | --- |
| `ConditionDefinition` | A new fallback [ConditionDefinition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ConditionDefinition/). |

`public static ConditionDefinition CreateActionCondition(ActionDefinitionReference action, bool conditionInversion, bool? resultOnPreExecution)` 

Creates a [ConditionType.Action](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ConditionType/) condition that evaluates `action`.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `action` | `ActionDefinitionReference` | The [ActionDefinitionReference](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActionDefinitionReference/) to assign to [ConditionDefinition.Action](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ConditionDefinition/). It identifies the condition logic to evaluate. |
| `conditionInversion` | `Boolean` | The value to assign to [ConditionDefinition.ConditionInversion](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ConditionDefinition/). |
| `resultOnPreExecution` | `Nullable<Boolean>` | The value to assign to [ConditionDefinition.ResultOnPreExecution](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ConditionDefinition/): [true](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool) or [false](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool) for a fixed result, or [null](https://learn.microsoft.com/dotnet/csharp/language-reference/keywords/null) to evaluate the condition normally. |

### Returns

| Type | Description |
| --- | --- |
| `ConditionDefinition` | A new [ConditionDefinition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ConditionDefinition/) whose [ConditionDefinition.Type](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ConditionDefinition/) is [ConditionType.Action](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ConditionType/). |

`public static ConditionDefinition CreateExpressionCondition(string expression, bool conditionInversion, bool? resultOnPreExecution)` 

Creates a [ConditionType.Expression](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ConditionType/) condition that evaluates `expression`.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `expression` | `String` | The C# [bool](https://learn.microsoft.com/dotnet/api/system.boolean) expression to assign to [ConditionDefinition.Expression](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ConditionDefinition/). |
| `conditionInversion` | `Boolean` | The value to assign to [ConditionDefinition.ConditionInversion](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ConditionDefinition/). |
| `resultOnPreExecution` | `Nullable<Boolean>` | The value to assign to [ConditionDefinition.ResultOnPreExecution](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ConditionDefinition/): [true](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool) or [false](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool) for a fixed result, or [null](https://learn.microsoft.com/dotnet/csharp/language-reference/keywords/null) to evaluate the expression normally. |

### Returns

| Type | Description |
| --- | --- |
| `ConditionDefinition` | A new [ConditionDefinition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ConditionDefinition/) whose [ConditionDefinition.Type](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ConditionDefinition/) is [ConditionType.Expression](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ConditionType/). |

[Previous ConcatenationType](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ConcatenationType/) [Next ConditionType](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ConditionType/)