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POFluent NHibernate and Stored Procedures
 

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    <p>I have a basic Customer/Order/OrderItem/Product object graph. Customer has Many Orders, Order has Many Order Items, Product has many Order Items. These are successfully mapped using FNH.</p> <p>I've hit a snag with configuring a stored procedure &amp; fluent-nhibernate. There is not a native way to map stored procedures in fluent-hibernate FNH (version 1.0 RTM). There was a solution <a href="http://maonet.wordpress.com/2009/05/06/create-your-own-parts-to-merge-stored-procedure-into-fluent-nhibernate-mappings/" rel="nofollow noreferrer">here</a> about adding parts to class mappings but the AddPart call has been taken out of the release of FNH.</p> <p>The stored procedure is simple: </p> <pre><code>CREATE PROCEDURE [dbo].[OrderCountByCustomer] AS BEGIN SET NOCOUNT ON; SELECT c.name as [Customer.Name], CAST(count(o.id) as NVARCHAR) as [Customer.OrderCount] FROM customer c LEFT OUTER JOIN [order] o ON o.customer_id = c.id GROUP BY c.name END </code></pre> <p>There's a CustomerOrderSummary.hbm.xml in </p> <pre><code>&lt;?xml version="1.0" encoding="utf-8" ?&gt; &lt;hibernate-mapping xmlns="urn:nhibernate-mapping-2.2" assembly="NVAble.Orders.Core" namespace="NVAble.Orders.Core"&gt; &lt;sql-query name="OrderSummary"&gt; &lt;return class="CustomerOrderSummary"&gt; &lt;return-property column="Customer.Name" name="CustomerName" /&gt; &lt;return-property column="Customer.OrderCount" name="OrderCount" /&gt; &lt;/return&gt; EXEC [OrderCountByCustomer] &lt;/sql-query&gt; &lt;/hibernate-mapping&gt; </code></pre> <p>Here is the CustomerOrderSummary class def:</p> <pre><code>namespace NVAble.Orders.Core { public class CustomerOrderSummary { virtual public string CustomerName { get; set; } virtual public string OrderCount { get; set; } public override string ToString() { return string.Format("{0} {1}", CustomerName, OrderCount); } } } </code></pre> <p>However, when try to start a NH session i get error in named query <code>OrderSummary</code> with no other details.</p> <p>I'm probably missing something really simple that maps the <code>CustomerOrderSummary</code> class to the procedure, I don't know. That domain object obviously doesn't map directly to a table in the data base so I'm unsure if having a normal <code>&lt;class /&gt;</code> HBM mapping would work?</p> <p>Thanks in advance!</p>
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