<style>
/* Changing the layout to use less space for mobiles */
@media screen and (max-device-width: 480px), screen and (-webkit-min-device-pixel-ratio: 2) {
    #email-body { min-width: 30em !important; }
    #email-page { padding: 8px !important; }
    #email-banner { padding: 8px 8px 0 8px !important; }
    #email-avatar { margin: 1px 8px 8px 0 !important; padding: 0 !important; }
    #email-fields { padding: 0 8px 8px 8px !important; }
    #email-gutter { width: 0 !important; }
}
</style>
<div id="email-body">
<table id="email-wrap" align="center" border="0" cellpadding="0" cellspacing="0" style="background-color:#f0f0f0;color:#000000;width:100%;">
    <tr valign="top">
        <td id="email-page" style="padding:16px !important;">
            <table align="center" border="0" cellpadding="0" cellspacing="0" style="background-color:#ffffff;border:1px solid #bbbbbb;color:#000000;width:100%;">
                <tr valign="top">
                    <td bgcolor="#3e4c4e" style="background-color:#3e4c4e;color:#ffffff;font-family:Arial,FreeSans,Helvetica,sans-serif;font-size:12px;line-height:1;"><img src="https://www.jboss.org/dms/hibernate/images/jira/jiraheader_hibernate.png" alt="" style="vertical-align:top;" /></td>
                </tr><tr valign="top">
    <td id="email-banner" style="padding:32px 32px 0 32px;">

                
        
        
            <table align="left" border="0" cellpadding="0" cellspacing="0" width="100%" style="width:100%;">
    <tr valign="top">
        <td style="color:#505050;font-family:Arial,FreeSans,Helvetica,sans-serif;padding:0;">
                                        <img id="email-avatar" src="https://hibernate.onjira.com/secure/useravatar?avatarId=10162" alt="" height="48" width="48" border="0" align="left" style="padding:0;margin: 0 16px 16px 0;" />
                        <div id="email-action" style="padding: 0 0 8px 0;font-size:12px;line-height:18px;">
                                    <a class="user-hover" rel="djmj" id="email_djmj" href="https://hibernate.onjira.com/secure/ViewProfile.jspa?name=djmj" style="color:#6c797f;">Marco Janc</a>
     commented on <img src="https://hibernate.onjira.com/images/icons/improvement.gif" height="16" width="16" border="0" align="absmiddle" alt="Improvement"> <a style='color:#6c797f;text-decoration:none;' href='https://hibernate.onjira.com/browse/HHH-7235'>HHH-7235</a>
            </div>
                        <div id="email-summary" style="font-size:16px;line-height:20px;padding:2px 0 16px 0;">
                <a style='color:#6c797f;text-decoration:none;' href='https://hibernate.onjira.com/browse/HHH-7235'><strong>Support null NaturalId values in loadEntityIdByNaturalId query</strong></a>
            </div>
                    </td>
    </tr>
</table>
    </td>
</tr>
<tr valign="top">
    <td id="email-fields" style="padding:0 32px 32px 32px;">
        <table border="0" cellpadding="0" cellspacing="0" style="padding:0;text-align:left;width:100%;" width="100%">
            <tr valign="top">
                <td id="email-gutter" style="width:64px;white-space:nowrap;"></td>
                <td>
                    <table border="0" cellpadding="0" cellspacing="0" width="100%">
                        <tr valign="top">
    <td colspan="2" style="color:#000000;font-family:Arial,FreeSans,Helvetica,sans-serif;font-size:12px;padding:0 0 16px 0;width:100%;">
        <div class="comment-block" style="background-color:#edf5ff;border:1px solid #dddddd;color:#000000;padding:12px;"><p>Thanks for that quick reply:</p>

<p>I simplified my code to a working example that produces same error. </p>

<p>Log: INFO: HHH000412: Hibernate Core {4.1.4.Final}</p>

<p>Mapping:</p>

<p>&lt;hibernate-mapping&gt;<br/>
    &lt;class name="package.Node" table="node" catalog="database"&gt;<br/>
        &lt;id name="id" type="java.lang.Integer"&gt;<br/>
            &lt;column name="id" /&gt;<br/>
            &lt;generator class="identity" /&gt;<br/>
        &lt;/id&gt;<br/>
        &lt;natural-id mutable="true"&gt;<br/>
                &lt;property name="name" type="string"&gt;<br/>
                    &lt;column name="name" length="64" not-null="true" /&gt;<br/>
                &lt;/property&gt;<br/>
                &lt;many-to-one name="parent" class="package.Node" lazy="false" fetch="select" update="false"&gt;<br/>
                    &lt;column name="parent" /&gt;<br/>
                &lt;/many-to-one&gt;<br/>
        &lt;/natural-id&gt;<br/>
    &lt;/class&gt;<br/>
&lt;/hibernate-mapping&gt;</p>

<p>// check for existence<br/>
final NaturalIdLoadAccess nila = session.byNaturalId(Node.class);<br/>
nila.using("name", "test");<br/>
nila.using("parent", null);<br/>
Node node = (Node) nila.load(); // fires exception</p>

<p>if (node == null)<br/>
{<br/>
        node = new Node();<br/>
        node.setName("test");</p>

<p>        session.save(pc);<br/>
}</p>

</div>
        <div style="color:#505050;padding:4px 0 0 0;">                </div>
    </td>
</tr>
                    </table>
                </td>
            </tr>
        </table>
    </td>
</tr>













            </table>
        </td><!-- End #email-page -->
    </tr>
    <tr valign="top">
        <td style="color:#505050;font-family:Arial,FreeSans,Helvetica,sans-serif;font-size:10px;line-height:14px;padding: 0 16px 16px 16px;text-align:center;">
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        </td>
    </tr>
</table><!-- End #email-wrap -->
</div><!-- End #email-body -->