# Class OfflineApi

OptimaJet.Workflow.Core.Runtime.OfflineApi

Provides API operations for building approval maps and executing ordered batches of workflow commands.

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

```csharp
public sealed class OfflineApi
```

## Constructors

`public OfflineApi(WorkflowRuntime runtimeOwner)` 

Initializes a new [OfflineApi](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Runtime/OfflineApi/) instance for the specified [WorkflowRuntime](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Runtime/WorkflowRuntime/).

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `runtimeOwner` | `WorkflowRuntime` | Runtime used to query process state and execute commands. |

## Methods

`public Task<Dictionary<string, ActivityDto>> GetApprovalMapAsync(ProcessDefinition scheme, Func<TransitionDefinition, Task<bool>> predicate = null, bool ignoreSubprocesses = false)` 

Gets the possible approval transitions for a process scheme.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `scheme` | `ProcessDefinition` | Process scheme containing transitions to evaluate. |
| `predicate` | `Func<TransitionDefinition, Boolean>` | Optional asynchronous validation callback executed for each transition before it is added to the map. If omitted, all applicable transitions are included. |
| `ignoreSubprocesses` | `Boolean` | [true](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool) to skip transitions where either end of the transition has a nesting level greater than zero. |

### Returns

| Type | Description |
| --- | --- |
| `Task<String, ActivityDto>` | A dictionary of activity names and corresponding [ActivityDto](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.ApprovalMap/ActivityDto/) objects with their possible approval transitions. |

`public Task<Dictionary<string, ActivityDto>> GetApprovalMapAsync(ProcessInstance pi, string identityId)` 

Gets the approval map for a running process instance and marks activities that are currently active.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `pi` | `ProcessInstance` | Process instance to analyze. |
| `identityId` | `String` | The workflow participant identity evaluated against actor restrictions on transitions. |

### Returns

| Type | Description |
| --- | --- |
| `Task<String, ActivityDto>` | A dictionary of activity names and corresponding [ActivityDto](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.ApprovalMap/ActivityDto/) objects where matching activities are marked with [ActivityDto.IsCurrent](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.ApprovalMap/ActivityDto/) when they are active in the process tree. |

`public Task<List<CommandExecutionResult>> ExecuteSomeCommandsAsync(IEnumerable<Command> commands)` 

Executes multiple commands, grouping them by process identifier and ordering each group by command date.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `commands` | `IEnumerable<Command>` | Commands to execute. |

### Returns

| Type | Description |
| --- | --- |
| `Task<CommandExecutionResult>` | One execution result per input command, returned in the original input order. An exception while executing a command interrupts only the remaining commands in the same process group. |

`public Task<List<CommandExecutionResult>> ExecuteSomeCommandsAsync(Guid processId, IEnumerable<Command> commands)` 

Executes several commands for one process, in command date order.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `processId` | `Guid` | Identifier of the process for which all commands are executed. |
| `commands` | `IEnumerable<Command>` | Commands to execute. Their [Command.ProcessId](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model.ApprovalMap/Command/) values are ignored. |

### Returns

| Type | Description |
| --- | --- |
| `Task<CommandExecutionResult>` | Execution results in the original input order. If executing a command throws, later commands by date are not executed and are marked as interrupted. |

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