# Class ProcessInstanceTree OptimaJet.Workflow.DbPersistence.ProcessInstanceTree Namespace: [OptimaJet.Workflow.DbPersistence](https://api.workflowengine.io/sql-server/OptimaJet.Workflow.DbPersistence/) ```csharp public class ProcessInstanceTree : DbObject ``` ## Type Hierarchy - [DbObject](https://api.workflowengine.io/sql-server/OptimaJet.Workflow.DbPersistence/DbObject-TEntity/) - ProcessInstanceTree Current type ## Constructors `public ProcessInstanceTree(string schemaName, int commandTimeout)` ### Parameters | Name | Type | Description | | --- | --- | --- | | `schemaName` | `String` | | | `commandTimeout` | `Int32` | | ## Methods `public Task> GetProcessTreeItemsByRootProcessIdAsync(SqlConnection connection, Guid rootProcessId)` ### Parameters | Name | Type | Description | | --- | --- | --- | | `connection` | `SqlConnection` | | | `rootProcessId` | `Guid` | | ### Returns | Type | Description | | --- | --- | | `Task` | | [Previous MSSQLProvider](https://api.workflowengine.io/sql-server/OptimaJet.Workflow.DbPersistence/MSSQLProvider/) [Next WorkflowApprovalHistory](https://api.workflowengine.io/sql-server/OptimaJet.Workflow.DbPersistence/WorkflowApprovalHistory/)