# Class WorkflowProcessInstance

OptimaJet.Workflow.SQLite.WorkflowProcessInstance

Database object for workflow process instance operations.

Namespace: [OptimaJet.Workflow.SQLite](https://api.workflowengine.io/sqlite/OptimaJet.Workflow.SQLite/)

```csharp
public class WorkflowProcessInstance : DbObject<ProcessInstanceEntity>
```

## Type Hierarchy

-   [DbObject<ProcessInstanceEntity>](https://api.workflowengine.io/sqlite/OptimaJet.Workflow.SQLite/DbObject-TEntity/)
    -   WorkflowProcessInstance Current type

## Constructors

`public WorkflowProcessInstance(string schemaName, int commandTimeout)` 

Initializes a new instance of [WorkflowProcessInstance](https://api.workflowengine.io/sqlite/OptimaJet.Workflow.SQLite/WorkflowProcessInstance/).

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `schemaName` | `String` | The database schema name. |
| `commandTimeout` | `Int32` | The command timeout in seconds. |

## Methods

`public Task<ProcessInstanceEntity[]> GetInstancesAsync(SqliteConnection connection, IEnumerable<Guid> ids)` 

Selects process instances by a collection of identifiers.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `connection` | `SqliteConnection` | The SQLite connection. |
| `ids` | `IEnumerable<Guid>` | The process identifiers to select. |

### Returns

| Type | Description |
| --- | --- |
| `Task<ProcessInstanceEntity[]>` | An array of matching process instance entities. |

`public Task<bool> IsProcessExistsAsync(SqliteConnection connection, Guid processId, string tenantId)` 

Checks whether a process with the specified identifier exists in the given tenant scope.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `connection` | `SqliteConnection` | The SQLite connection. |
| `processId` | `Guid` | The process identifier. |
| `tenantId` | `String` | The tenant identifier, or `null` for shared processes. |

### Returns

| Type | Description |
| --- | --- |
| `Task<Boolean>` | `true` if the process exists; otherwise, `false`. |

[Previous WorkflowInbox](https://api.workflowengine.io/sqlite/OptimaJet.Workflow.SQLite/WorkflowInbox/) [Next WorkflowProcessInstancePersistence](https://api.workflowengine.io/sqlite/OptimaJet.Workflow.SQLite/WorkflowProcessInstancePersistence/)