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PONhibernate - why is it trying to insert existing parent row when inserting child
 

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    <p>I don't understand why NHibernate is trying to insert the parent object - when the row already exists in the db - when I'm inserting the child row.</p> <p>Parent mapping:</p> <pre><code>&lt;hibernate-mapping xmlns="urn:nhibernate-mapping-2.2" auto-import="true"&gt; &lt;class name="ReportDistribution.Client.ReportMgr.Model.ClientReport, ReportDistribution.Client.ReportMgr.Model" table="ClientReport" lazy="false" dynamic-update="true"&gt; &lt;id name="Id" access="property" column="ReportID"&gt; &lt;generator class="assigned"&gt;&lt;/generator&gt; &lt;/id&gt; &lt;property name="MaxAge" access="property" /&gt; &lt;property name="DeleteUnread" access="property" /&gt; &lt;property name="Description" access="property" /&gt; &lt;property name="Name" access="property" /&gt; &lt;bag name="ClientPublications" cascade="all" lazy="false"&gt; &lt;key column="ReportID" /&gt; &lt;one-to-many class="ReportDistribution.Client.ReportMgr.Model.ClientPublication, ReportDistribution.Client.ReportMgr.Model" /&gt; &lt;/bag&gt; &lt;/class&gt; &lt;/hibernate-mapping&gt; </code></pre> <p>Child mapping:</p> <pre><code>&lt;hibernate-mapping xmlns="urn:nhibernate-mapping-2.2" auto-import="true"&gt; &lt;class name="ReportDistribution.Client.ReportMgr.Model.ClientPublication, ReportDistribution.Client.ReportMgr.Model" table="ClientPublication" lazy="false" dynamic-update="true"&gt; &lt;id name="Id" access="property" column="PublicationID"&gt; &lt;generator class="assigned"&gt;&lt;/generator&gt; &lt;/id&gt; &lt;property name="CreatedOn" access="property" type="DateTime"&gt;&lt;/property&gt; &lt;property name="IsMarkedForDeletion" access="property"&gt;&lt;/property&gt; &lt;property name="IsDeleted" access="property"&gt;&lt;/property&gt; &lt;property name="HasBeenRead" access="property"&gt;&lt;/property&gt; &lt;property name="ReceivedOn" access="property" type="DateTime"&gt;&lt;/property&gt; &lt;property name="FileExtension" access="property"&gt;&lt;/property&gt; &lt;property name="IsDownloaded" access="property"&gt;&lt;/property&gt; &lt;property name="MustRead" access="property"&gt;&lt;/property&gt; &lt;many-to-one name="Report" class="ReportDistribution.Client.ReportMgr.Model.ClientReport, ReportDistribution.Client.ReportMgr.Model" lazy="false" column="ReportID"&gt; &lt;/many-to-one&gt; &lt;/class&gt; &lt;/hibernate-mapping&gt; </code></pre> <p>The Parent class (Report) has property which is a collection of child classes. The Child class (Publication) has property which is the parent object.</p> <p>Thanks in advance....</p>
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    1. COHave you tried putting inverse=true on ClientPublications bag?
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    2. COI get an ADOException because its inserting NULL into the PublicationId column.
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    3. COsorry ignore that last comment was because I'd change id generator to "native".
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