# Class WorkflowProcessInstancePersistence

OptimaJet.Workflow.PostgreSQL.WorkflowProcessInstancePersistence

Namespace: [OptimaJet.Workflow.PostgreSQL](https://api.workflowengine.io/postgresql/OptimaJet.Workflow.PostgreSQL/)

```csharp
public class WorkflowProcessInstancePersistence : DbObject<ProcessInstancePersistenceEntity>
```

## Type Hierarchy

-   [DbObject<ProcessInstancePersistenceEntity>](https://api.workflowengine.io/postgresql/OptimaJet.Workflow.PostgreSQL/DbObject-TEntity/)
    -   WorkflowProcessInstancePersistence Current type

## Constructors

`public WorkflowProcessInstancePersistence(string schemaName, int commandTimeout)` 

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `schemaName` | `String` |  |
| `commandTimeout` | `Int32` |  |

## Methods

`public Task<ProcessInstancePersistenceEntity[]> SelectByProcessIdAsync(NpgsqlConnection connection, Guid processId)` 

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `connection` | `NpgsqlConnection` |  |
| `processId` | `Guid` |  |

### Returns

| Type | Description |
| --- | --- |
| `Task<ProcessInstancePersistenceEntity[]>` |  |

`public Task<ProcessInstancePersistenceEntity> SelectByNameAsync(NpgsqlConnection connection, Guid processId, string parameterName)` 

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `connection` | `NpgsqlConnection` |  |
| `processId` | `Guid` |  |
| `parameterName` | `String` |  |

### Returns

| Type | Description |
| --- | --- |
| `Task<ProcessInstancePersistenceEntity>` |  |

`public Task<int> DeleteByProcessIdAsync(NpgsqlConnection connection, Guid processId, NpgsqlTransaction transaction = null)` 

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `connection` | `NpgsqlConnection` |  |
| `processId` | `Guid` |  |
| `transaction` | `NpgsqlTransaction` |  |

### Returns

| Type | Description |
| --- | --- |
| `Task<Int32>` |  |

`public Task<int> DeleteByNameAsync(NpgsqlConnection connection, Guid processId, string parameterName, NpgsqlTransaction transaction = null)` 

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `connection` | `NpgsqlConnection` |  |
| `processId` | `Guid` |  |
| `parameterName` | `String` |  |
| `transaction` | `NpgsqlTransaction` |  |

### Returns

| Type | Description |
| --- | --- |
| `Task<Int32>` |  |

`public Task UpsertAsync(NpgsqlConnection connection, ProcessInstancePersistenceEntity entity, bool preferUpdateFirst, NpgsqlTransaction transaction)` 

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `connection` | `NpgsqlConnection` |  |
| `entity` | `ProcessInstancePersistenceEntity` |  |
| `preferUpdateFirst` | `Boolean` |  |
| `transaction` | `NpgsqlTransaction` |  |

### Returns

| Type | Description |
| --- | --- |
| `Task` |  |

[Previous WorkflowProcessInstance](https://api.workflowengine.io/postgresql/OptimaJet.Workflow.PostgreSQL/WorkflowProcessInstance/) [Next WorkflowProcessInstanceStatus](https://api.workflowengine.io/postgresql/OptimaJet.Workflow.PostgreSQL/WorkflowProcessInstanceStatus/)