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<td style="vertical-align: top;; padding: 0; border-collapse: collapse; padding-right: 5px; font-size: 20px; line-height: 30px; mso-line-height-rule: exactly" class="page-title-pattern-header-container"> <span class="page-title-pattern-header" style="font-family: Arial, sans-serif; padding: 0; font-size: 20px; line-height: 30px; mso-text-raise: 2px; mso-line-height-rule: exactly; vertical-align: middle"> <a href="https://hibernate.atlassian.net/browse/HHH-3917" style="color: #3b73af; text-decoration: none">Re: @NotFound(action=NotFoundAction.IGNORE) results in EAGER loading for @ManyToOne(fetch = FetchType.LAZY) field</a> </span> </td>
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<td class="text-paragraph-pattern-container mobile-resize-text " style="padding: 0; border-collapse: collapse; padding: 0 0 10px"> <p style="margin: 10px 0 0; margin-top: 0">Just reading the description though (correct me if I miss something) I'm not sure how this would work unless the application is using bytecode enhancement as opposed to proxies. When proxies are used we need to know where to create a reference for the association or to use null as soon as the owner is initialized. In the case of real/normal foreign keys this is simply a matter of seeing if the FK value is null. However, for a <tt>@NotFound</tt> mappping, that isn't the case because a not-null database value can result in a null association - its kind of the whole point of <tt>@NotFound</tt>. </p> <p style="margin: 10px 0 0">In a "normal" fk situation, you'd have, e.g.:</p>
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<th class="confluenceTh" style="border: 1px solid #cccccc; background: #f5f5f5; padding: 3px 4px; text-align: center; font: bold 14px/20px Arial, sans-serif">id</th>
<th class="confluenceTh" style="border: 1px solid #cccccc; background: #f5f5f5; padding: 3px 4px; text-align: center; font: bold 14px/20px Arial, sans-serif">...</th>
<th class="confluenceTh" style="border: 1px solid #cccccc; background: #f5f5f5; padding: 3px 4px; text-align: center; font: bold 14px/20px Arial, sans-serif">fk</th>
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<td class="confluenceTd" style="padding: 0; border-collapse: collapse; border: 1px solid #cccccc; padding: 3px 4px; font: normal 14px/20px Arial, sans-serif">1</td>
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<td class="confluenceTd" style="padding: 0; border-collapse: collapse; border: 1px solid #cccccc; padding: 3px 4px; font: normal 14px/20px Arial, sans-serif">null</td>
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<td class="confluenceTd" style="padding: 0; border-collapse: collapse; border: 1px solid #cccccc; padding: 3px 4px; font: normal 14px/20px Arial, sans-serif">2</td>
<td class="confluenceTd" style="padding: 0; border-collapse: collapse; border: 1px solid #cccccc; padding: 3px 4px; font: normal 14px/20px Arial, sans-serif">...</td>
<td class="confluenceTd" style="padding: 0; border-collapse: collapse; border: 1px solid #cccccc; padding: 3px 4px; font: normal 14px/20px Arial, sans-serif">1</td>
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</div> <p style="margin: 10px 0 0">where <tt>fk</tt> is a foreign key back to <tt>id</tt>. The row with <tt>pk = 1</tt> has <tt>fk = null</tt> which we know immediately is a null association in the object model.</p> <p style="margin: 10px 0 0">If instead we make <tt>fk</tt> not a "real" fk (no db constraint)... now say we have the following data:</p>
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<th class="confluenceTh" style="border: 1px solid #cccccc; background: #f5f5f5; padding: 3px 4px; text-align: center; font: bold 14px/20px Arial, sans-serif">id</th>
<th class="confluenceTh" style="border: 1px solid #cccccc; background: #f5f5f5; padding: 3px 4px; text-align: center; font: bold 14px/20px Arial, sans-serif">...</th>
<th class="confluenceTh" style="border: 1px solid #cccccc; background: #f5f5f5; padding: 3px 4px; text-align: center; font: bold 14px/20px Arial, sans-serif">fk</th>
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<td class="confluenceTd" style="padding: 0; border-collapse: collapse; border: 1px solid #cccccc; padding: 3px 4px; font: normal 14px/20px Arial, sans-serif">1</td>
<td class="confluenceTd" style="padding: 0; border-collapse: collapse; border: 1px solid #cccccc; padding: 3px 4px; font: normal 14px/20px Arial, sans-serif">...</td>
<td class="confluenceTd" style="padding: 0; border-collapse: collapse; border: 1px solid #cccccc; padding: 3px 4px; font: normal 14px/20px Arial, sans-serif">0</td>
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<td class="confluenceTd" style="padding: 0; border-collapse: collapse; border: 1px solid #cccccc; padding: 3px 4px; font: normal 14px/20px Arial, sans-serif">2</td>
<td class="confluenceTd" style="padding: 0; border-collapse: collapse; border: 1px solid #cccccc; padding: 3px 4px; font: normal 14px/20px Arial, sans-serif">...</td>
<td class="confluenceTd" style="padding: 0; border-collapse: collapse; border: 1px solid #cccccc; padding: 3px 4px; font: normal 14px/20px Arial, sans-serif">1</td>
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</div> <p style="margin: 10px 0 0">Now the row with <tt>pk = 1</tt> has <tt>fk = 0</tt> where 0 is not an existing pk value. But we have to "look to" the other side of the "foreign key" to know that</p> </td>
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