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PONHibernate Criteria query building
 

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    <p>I'm having some trouble understanding a bit of code. I've got 2 classes Company and CompanyLocation. Mapped as:</p> <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;hibernate-mapping xmlns="urn:nhibernate-mapping-2.2"&gt; &lt;class name="Core.DataTransfer.CompanyLocation,Core.DataTransfer" table="`CompanyLocation`" lazy="true"&gt; &lt;id name="CompanyLocationId" column="`CompanyLocationID`" type="int"&gt; &lt;generator class="native" /&gt; &lt;/id&gt; &lt;many-to-one name="Company" cascade="none" column="`CompanyID`" not-null="true" /&gt; &lt;/class&gt; &lt;/hibernate-mapping&gt; &lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;hibernate-mapping xmlns="urn:nhibernate-mapping-2.2"&gt; &lt;class name="Core.DataTransfer.Company,Core.DataTransfer" table="`Company`" lazy="true"&gt; &lt;id name="CompanyId" column="`CompanyID`" type="int"&gt; &lt;generator class="native" /&gt; &lt;/id&gt; &lt;property type="string" not-null="true" length="100" name="CompanyName" column="`CompanyName`" /&gt; &lt;bag name="CompanyLocations" inverse="true" lazy="true" cascade="all"&gt; &lt;key column="`CompanyID`" /&gt; &lt;one-to-many class="Core.DataTransfer.CompanyLocation,Core.DataTransfer" /&gt; &lt;/bag&gt; &lt;/class&gt; &lt;/hibernate-mapping&gt; </code></pre> <p>I'm trying to query using a Criteria query as follows:</p> <pre><code> public IList&lt;CompanyLocation&gt; GetCompanyLocations(string sortExpression) { ICriteria criteria = _session.CreateCriteria(typeof(CompanyLocation)); if (!string.IsNullOrEmpty(sortExpression)) { Sort sort = new Sort(sortExpression); if (!string.IsNullOrEmpty(sort.AssociationPath)) { criteria.CreateCriteria(sort.AssociationPath).AddOrder(new Order(sort.SortColumn, sort.IsAscending)); } // if (!string.IsNullOrEmpty(sort.AssociationPath)) // { // criteria.CreateCriteria(sort.AssociationPath); // } // criteria.AddOrder(new Order(sort.SortColumn, sort.IsAscending)); } return criteria.List&lt;CompanyLocation&gt;(); } </code></pre> <p>When I call the method and pass in a sortExpression of "Company.CompanyName DESC" the Sort class will parse it so that: AssociationPath = "Company" SortColumn = "CompanyName" IsAscending = false</p> <p>The if block in the method that is not commented out works. If I change to the one that is commented out it fails with: could not resolve property: CompanyName </p> <p>I'm having trouble understanding why.</p>
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