Databases
StackOverflow2013
Postsdbo
POhow to map to a SortedList in NHibernate
Body
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POhow to map to a SortedList in NHibernate
    text
    copied!<p>I have an nHibernate parent child table relationship. The parent class is currently pulling the children into a List but I want to put them in a SortedList based on an ordering column in the table. How do I change the NHibernate mapping file to let the system know which column I am ordering on?</p> <p>The current NHibernate mapping files are:</p> <pre><code>&lt;hibernate-mapping xmlns="urn:nhibernate-mapping-2.2" namespace="Model.Configuration.Pages" assembly="Model.Configuration"&gt; &lt;joined-subclass table="PageConfigurations" name="PageConfiguration" extends="Model.Configuration.Configuration.TargetedConfiguration" lazy="false"&gt; &lt;key column="TargetedConfigurationId" /&gt; &lt;property name="SchemaVersion" /&gt; &lt;property name="Template" type="System.String" length="50" /&gt; &lt;property name="PageKey" type="System.String" length="50" /&gt; &lt;property name="Percentage" /&gt; &lt;bag name="Controls" cascade="all-delete-orphan" lazy="false" &gt; &lt;key column="PageConfigurationId" /&gt; &lt;one-to-many class="WidgetConfiguration"/&gt; &lt;/bag&gt; &lt;/joined-subclass&gt; &lt;/hibernate-mapping&gt; </code></pre> <p>for the parent table and:</p> <pre><code>&lt;hibernate-mapping xmlns="urn:nhibernate-mapping-2.2" namespace="Model.Configuration.Pages" assembly="Model.Configuration"&gt; &lt;class name="WidgetConfiguration" lazy="false" table="PageConfiguration_Widgets" discriminator-value="Default"&gt; &lt;id name="Id" unsaved-value="0" type="int" &gt; &lt;generator class="identity" /&gt; &lt;/id&gt; &lt;discriminator column="ConfigurationType" /&gt; &lt;property name="Slot" type="System.String" length="100" /&gt; &lt;property name="WidgetTypeName" type="System.String" length="100"/&gt; &lt;property name="ViewName" type="System.String" length="50" /&gt; &lt;property name="SlotOrder" type="System.Int32" /&gt; &lt;/class&gt; &lt;/hibernate-mapping&gt; </code></pre> <p>for the child table.</p> <p>What do I need to add to the parent or child mappings to let them know that the new SlotOrder column should be used as the key field when fetching the WidgetConfiguration into a SortedList.</p> <p>EDIT: The class that the data is being read into is:</p> <pre><code>public class PageConfiguration : TargetedConfiguration { public PageConfiguration() { // replaced by SortedList //Controls = new List&lt;WidgetConfiguration&gt;(); Controls = new SortedList&lt;int, WidgetConfiguration&gt;(); } public string PageKey { get; set; } public string Template { get; set; } public int? Percentage { get; set; } // replaced by SortedList //public IList&lt;WidgetConfiguration&gt; Controls { get; set; } public IDictionary&lt;int, WidgetConfiguration&gt; Controls { get; set; } public int SchemaVersion { get; set; } } </code></pre> <p>Notice that the <code>List&lt;WidgetConfiguration&gt;</code> has been changed to <code>SortedList&lt;int, WidgetConfiguration&gt;</code>. How do I tell NHibernate that when a new item is added to the SortedList that the key value used should be WidgetConfiguration.SlotOrder?</p>
 

Querying!

 
Guidance
An individual column

Larger individual text columns get their own page to allow for proper reading.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload