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<td class="page-title-pattern-first-line " style="padding: 0; border-collapse: collapse; font-family: Arial, sans-serif; font-size: 14px; padding-top: 10px"> <a href="https://hibernate.atlassian.net/browse/HHH?atlOrigin=eyJpIjoiYzBhZDFjYzBmM2U1NDI1MWFmYzAxODkyMWIwZWRiMTUiLCJwIjoiaiJ9" style="color: #3b73af; text-decoration: none">Hibernate ORM</a> / <a href="https://hibernate.atlassian.net/browse/HHH-13425?atlOrigin=eyJpIjoiYzBhZDFjYzBmM2U1NDI1MWFmYzAxODkyMWIwZWRiMTUiLCJwIjoiaiJ9" style="color: #3b73af; text-decoration: none"><img src="cid:jira-generated-image-avatar-00744c30-d392-4527-b8e3-b759969f4b8e" height="16" width="16" border="0" align="absmiddle" alt="Bug" style="vertical-align: text-bottom"></a> <a href="https://hibernate.atlassian.net/browse/HHH-13425?atlOrigin=eyJpIjoiYzBhZDFjYzBmM2U1NDI1MWFmYzAxODkyMWIwZWRiMTUiLCJwIjoiaiJ9" style="color: #3b73af; text-decoration: none">HHH-13425</a> </td>
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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-13425?atlOrigin=eyJpIjoiYzBhZDFjYzBmM2U1NDI1MWFmYzAxODkyMWIwZWRiMTUiLCJwIjoiaiJ9" style="color: #3b73af; text-decoration: none">The other side of an OneToOne association is not unset when one side invokes the setter with NULL as argument</a> </span> </td>
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<td style="padding: 0; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> <a class="user-hover" rel="niku.sirbu" style="color:#6c797f;; color: #3b73af; text-decoration: none" id="email_niku.sirbu" href="https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=557058%3A0af967fe-318d-4033-8b8e-6dd8c1a8d5e1"> Nicolae Sîrbu </a> </td>
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<td class="text-paragraph-pattern-container mobile-resize-text " style="padding: 0; border-collapse: collapse; padding: 0 0 10px"> <span class="diffcontext">Here's an interesting situation I discovered with the OneToOne associations and the bidirectional association management. Suppose there are two entities: {{StockAllocation}} and {{OrderLine}}.<br><br>Inside {{OrderLine}} entity I have:<br>{code:java}<br>@OneToOne(mappedBy = "orderLine", fetch = FetchType.LAZY, optional = true)<br>private StockAllocation stockAllocation;<br>{code}<br><br>And inside {{StockAllocation}} entity I have:<br>{code:java}<br>@OneToOne(fetch = LAZY, optional = false)<br>private OrderLine orderLine;<br>{code}<br><br>Now after these 2 classes have been enhanced, suppose at some point I want to unset the {{orderLine}} from the {{stockAllocation}}, I do it in the following way:<br>{code:java}<br>orderLine.setStockAllocation(</span> <span class="diffremovedchars" style="background-color: #ffe7e7; text-decoration:line-through;">stockAllocation</span> <span class="diffaddedchars" style="background-color:#ddfade;">null</span> <span class="diffcontext">);<br>{code}<br><br>This sets the {{orderLine}} to {{null}} on the {{stockAllocation}} entity, but is doesn’t set the {{stockAllocation}} to {{null}} on the {{orderLine}} entity. Wasn’t the bytecode enhancement supposed to do that?, by changing one side of a bi-directional relation, the other side gets updated as well?<br><br>If I look the the bytecode, I see the following:<br><br>{code:java}<br>public void setStockAllocation(StockAllocation stockAllocation) {<br> $$_hibernate_write_stockAllocation(stockAllocation);<br>}<br><br>public void $$_hibernate_write_stockAllocation(StockAllocation paramStockAllocation) {<br> if (this.stockAllocation != null && Hibernate.isPropertyInitialized(this.stockAllocation, "orderLine") && paramStockAllocation != null) {<br> null;<br> ((StockAllocation) this.stockAllocation).$$_hibernate_write_orderLine(null);<br> }<br> <br> OrderLine orderLine = this;<br> StockAllocation stockAllocation1 = paramStockAllocation;<br> <br> if (!Objects.deepEquals(stockAllocation1, orderLine.stockAllocation))<br> orderLine.$$_hibernate_trackChange("stockAllocation");<br> <br> orderLine.stockAllocation = stockAllocation1;<br> <br> if (paramStockAllocation != null && Hibernate.isPropertyInitialized(paramStockAllocation, "orderLine") && ((StockAllocation) paramStockAllocation).$$_hibernate_read_orderLine() != this) {<br> this;<br> ((StockAllocation) paramStockAllocation).$$_hibernate_write_orderLine(this);<br> }<br>}<br>{code}<br><br>The {{orderLine}} is indeed set to {{null}} (the argument of this method is {{null}}), but the {{stockAllocation}} from the {{orderLine}} isn’t set to {{null}}, because the first IF will be {{true}} only when the argument of the method will be not {{null}}.<br><br>Is this an expected behavior or a bug?<br><br>A test case has been attached. [^hibernate-orm-5.4.2-association-management.zip] </span> </td>
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