---
title: "SQL-179: Retrieve Employee"
summary: Read operation against Employee via NHibernate ORM.
status: draft
owner: SAIF Doc Gen
last_reviewed: 2026-09-24
library: SAIF.Services
reference_type: package
---

# SQL-179: Retrieve Employee

This ORM statement performs a read lookup on `Employee` via `IUnitOfWork.GetRepository<T>()`, executed twice from `Services/SAIF.Services/Claims/SecurityOverride/SecurityOverrideService.cs` — once keyed on `Id` (L65, `SetAdditionalProperties`) and once keyed on `UserId` (L103, `CreateOverride`). The `Employee` entity's `ClassMap` lives in the external `SAIF.Framework.Data.NHibernate` package; Legends resolved only the table name (`ADP_EMPLOYEE`) and the `RPT_MGR_EMPLID` self-reference, so the remaining columns used here are shown as C# property names.

## Classification

| Field | Value |
| --- | --- |
| **SQL ID** | SQL-179 |
| **Operation type** | Read |
| **Execution method** | ORM (NHibernate LINQ) |
| **Database** | Oracle |
| **Schema** | [unqualified]** |
| **Command type** | N/A (ORM-generated) |
| **Business object** | `Employee` |
| **Criteria property** | N/A — ORM |
| **Lifecycle method** | `SetAdditionalProperties, CreateOverride` |

## Parameters

| Parameter | Direction | Type | Max length | Description |
| --- | --- | --- | --- | --- |
| `:entryUserId` | Input | Guid/string | N/A | `= entry.UserId`, used in `x.Id == entry.UserId` (L65) |
| `:userIdUpper` | Input | string | N/A | `= securityOverrideEdit.UserId.ToUpper()`, used in `x.UserId == ...` (L103) |

## Tables

| Table | Access | Columns used |
| --- | --- | --- |
| [ADP_EMPLOYEE](../database-tables.md#adp_employee)** | SELECT | Full entity; filter columns Id, UserId (C# property names — column mapping unresolved) |

## LINQ statement

Source: `Services/SAIF.Services/Claims/SecurityOverride/SecurityOverrideService.cs:65`. A second, separate statement is issued from the same file at L103.

```csharp
// Services/SAIF.Services/Claims/SecurityOverride/SecurityOverrideService.cs:65
var employeeData = unitOfWork.GetRepository<Data.Model.Employees.Employee>().Query().FirstOrDefault(x => x.Id == entry.UserId);

// Services/SAIF.Services/Claims/SecurityOverride/SecurityOverrideService.cs:103
var employeeData = unitOfWork.GetRepository<Data.Model.Employees.Employee>().Query().FirstOrDefault(x => x.UserId == securityOverrideEdit.UserId.ToUpper());
```

## Sample SQL

> **Inferred SQL:** This SQL was inferred from the LINQ statement above and the NHibernate mappings. It is not concrete SQL from source code; NHibernate generates the executed statement at runtime, so aliases, column order, join syntax, and bind-parameter names may differ.

```sql
-- Inferred from LINQ (NHibernate mapping translation); not concrete SQL
-- (1) L65 — SetAdditionalProperties
SELECT * FROM (
    SELECT E.Id, E.UserId, E.EmployeeStatusCode, E.FirstName, E.LastName, E.PreferredName,
           E.EmailAddress, E.Phone, E.Department, E.JobTitle /* , ...remaining EmployeeMap columns */
           -- unresolved mapping: Employee.* (C# property names; physical columns not resolvable)
    FROM   ADP_EMPLOYEE E
    WHERE  E.Id = :entryUserId                        -- unresolved mapping: Employee.Id
) WHERE ROWNUM <= 1;

-- (2) L103 — CreateOverride
SELECT * FROM (
    SELECT E.Id, E.UserId, E.EmployeeStatusCode, E.FirstName, E.LastName, E.PreferredName,
           E.EmailAddress, E.Phone, E.Department, E.JobTitle /* , ...remaining EmployeeMap columns */
           -- unresolved mapping: Employee.* (C# property names; physical columns not resolvable)
    FROM   ADP_EMPLOYEE E
    WHERE  E.UserId = :userIdUpper                    -- unresolved mapping: Employee.UserId
) WHERE ROWNUM <= 1;
```

Translation notes:
- ** = unresolved column mapping (C# property names shown). Table name `ADP_EMPLOYEE` is from Legends documentation of `SAIF.Framework.Data.NHibernate`; no `ClassMap<Employee>` exists in this repo.
- `FirstOrDefault` → Oracle10 dialect wraps each query in `SELECT * FROM (...) WHERE ROWNUM <= 1`.

## Operations and processes
- SecurityOverrideService.CreateOverride — see [Operations and processes](../operations-processes.md)
- SecurityOverrideService.SetAdditionalProperties — see [Operations and processes](../operations-processes.md)

## Sources
- `Services/SAIF.Services/Claims/SecurityOverride/SecurityOverrideService.cs (L65, L103)`