---
title: "SQL-184: Retrieve Employee"
summary: Read operation against Employee via NHibernate ORM.
status: draft
owner: SAIF Doc Gen
last_reviewed: 2026-09-25
library: SAIF.Services
reference_type: package
---

# SQL-184: Retrieve Employee

This covers two `Employee` reads called from `SubpoenaService`: `GetInboxItems` retrieves a single `Employee` by `Id` inside a `foreach` loop (an N+1 pattern, one query per inbox item), and `InitiateEmployeeList` retrieves a projected list of employees whose `Id` is in a captured id list, ordered by `LastName`. The `Employee` entity's `ClassMap` lives in the external `SAIF.Framework.Data.NHibernate` package; the backing table resolves to `ADP_EMPLOYEE`, but its column mappings are unresolved beyond the `RPT_MGR_EMPLID` self-reference.

## Classification

| Field | Value |
| --- | --- |
| **SQL ID** | SQL-184 |
| **Operation type** | Read |
| **Execution method** | ORM (NHibernate LINQ) |
| **Database** | Oracle |
| **Schema** | [unqualified]** |
| **Command type** | N/A (ORM-generated) |
| **Business object** | `SubpoenaService` |
| **Criteria property** | N/A — ORM |
| **Lifecycle method** | `GetInboxItems, InitiateEmployeeList` |

## Parameters

| Parameter | Direction | Type | Max length | Description |
| --- | --- | --- | --- | --- |
| `:requestedById` | Input | String | N/A | `inboxItem.RequestedById` — filters `Employee.Id` (unresolved mapping) |
| `:ids` | Input | String[] | N/A | Captured `string[]` expanded to an `IN` list (`ids.Contains(x.Id)`) — filters `Employee.Id` (unresolved mapping) |

## Tables

| Table | Access | Columns used |
| --- | --- | --- |
| ADP_EMPLOYEE** | SELECT | `Id`, `UserId`, `LastName`, `FirstName`, `PreferredName` (+ full entity in statement 1) — C# property names, column mapping unresolved |

## LINQ statement

Source: `Services/SAIF.Services/Legal/Subpoenas/SubpoenaService.cs:122`, with a second fragment at line 321.

```csharp
// Services/SAIF.Services/Legal/Subpoenas/SubpoenaService.cs:122
var firstOrDefault = _unitOfWork.GetRepository<Employee>()
    .Query()
    .FirstOrDefault(x => x.Id == inboxItem.RequestedById);

// Services/SAIF.Services/Legal/Subpoenas/SubpoenaService.cs:321
return _unitOfWork.GetRepository<Employee>().Query()
    .Where(x => ids.Contains(x.Id))
    .OrderBy(x => x.LastName)
    .Select(
        x =>
            new LegalEmployee
            {
                Id = x.Id,
                UserId = x.UserId,
                Name =
                    x.LastName + ", " +
                    (x.PreferredName.IsNullOrWhiteSpace() ? x.FirstName : x.PreferredName),
                IsSelectedUser = (_currentUser == x.UserId ? true : false)
            }).ToList();
```

## 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) L122 — GetInboxItems (once per inbox item in the foreach at L119)
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 = :requestedById                       -- unresolved mapping: Employee.Id
) WHERE ROWNUM <= 1;

-- (2) L321 — InitiateEmployeeList (projection; see notes)
SELECT E.Id, E.UserId, E.LastName, E.PreferredName, E.FirstName   -- unresolved mapping: Employee.*
FROM   ADP_EMPLOYEE E
WHERE  E.Id IN (:ids)                                             -- unresolved mapping: Employee.Id
ORDER BY E.LastName;
```

Translation notes:
- `**` = unresolved column mapping (C# property names shown). Table name `ADP_EMPLOYEE` is resolved from Legends documentation of `SAIF.Framework.Data.NHibernate`.
- `FirstOrDefault` uses the Oracle10 dialect wrapper `SELECT * FROM (...) WHERE ROWNUM <= 1`.
- Statement (1) is an N+1 pattern — one query per inbox item.
- Statement (2)'s projection uses the `IsNullOrWhiteSpace()` extension, which is evaluated client-side; the SQL selects only the referenced columns.
- `CL_CLAIM_EMP_BUS_FUNC_LIMIT` is not accessed here: the L313 limits query that produces `ids` is a separate, already-materialized statement (SQL-187); `ids` is an in-memory array by the time this statement runs.

## Operations and processes
- SubpoenaService.GetInboxItems — see [Operations and processes](../operations-processes.md)
- SubpoenaService.InitiateEmployeeList — see [Operations and processes](../operations-processes.md)

## Sources
- `Services/SAIF.Services/Legal/Subpoenas/SubpoenaService.cs (L122, L321)`