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<td class="page-title-pattern-first-line " style="padding: 0px; border-collapse: collapse; font-family: Arial, sans-serif; font-size: 14px; padding-top: 10px"> <a href="https://hibernate.atlassian.net/browse/HHH" style="color: #3b73af; text-decoration: none">Hibernate ORM</a> / <a href="https://hibernate.atlassian.net/browse/HHH-10862" style="color: #3b73af; text-decoration: none"><img src="cid:jira-generated-image-avatar-5da81eb3-4e4e-4f6e-ae49-c043077bb72b" height="16" width="16" border="0" align="absmiddle" alt="Bug" style="vertical-align: text-bottom"></a> <a href="https://hibernate.atlassian.net/browse/HHH-10862" style="color: #3b73af; text-decoration: none">HHH-10862</a> </td>
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<td style="vertical-align: top;; padding: 0px; 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-10862" style="color: #3b73af; text-decoration: none">Delete HQL does not work with @Formula-mapped column (NullPointerException)</a> </span> </td>
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<td style="padding: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> 5.1.0 </td>
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<td style="padding: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> 16/Jun/2016 09:01 AM </td>
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<td style="padding: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> <a class="user-hover" rel="antonio.anzivino" id="email_antonio.anzivino" href="https://hibernate.atlassian.net/secure/ViewProfile.jspa?name=antonio.anzivino" style="color:#6c797f;; color: #3b73af; text-decoration: none">Antonio Anzivino</a> </td>
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<td class="text-paragraph-pattern-container mobile-resize-text " style="padding: 0px; border-collapse: collapse; padding: 0 0 10px 0"> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0; margin-top: 0">Finding the cause of this problem took me a lot of time, because unfortunately Hibernate was not helping me find the problem in the HQL. Now I want to help you track this insidious issue</p> <h2 style="margin: 10px 0 0 0; font-size: 20px; font-weight: normal; line-height: 1.500; margin: 40px 0 0 0"><a name="Descriptionofcontext" style="color: #3b73af; text-decoration: none"></a>Description of context</h2> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">I need to bulk delete entities based on a where condition. Nothing esoteric. But the column I am querying is based on a formula expression.<br> In fact, for all of my linked entities I perform a double-mapping, as the handwritten example below.</p>
<div class="code panel" style="border-width: 1px;; border: 1px solid #cccccc; background: #f5f5f5; font-size: 12px; line-height: 1.333; font-family: monospace; border: 1px solid #cccccc; -moz-border-radius: 3px 3px 3px 3px; border-radius: 3px 3px 3px 3px; margin: 9px 0">
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<pre class="code-java" style="margin: 10px 0 0 0; margin-top: 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal">
class Entity{
@onetomany
@joincolumn(<span class="code-quote" style="color: #009100">"roleid"</span>)
<span class="code-keyword" style="color: #000091">private</span> Role role;
@formula(<span class="code-quote" style="color: #009100">"roleid"</span>)
@<span class="code-keyword" style="color: #000091">private</span> <span class="code-keyword" style="color: #000091">final</span> <span class="code-object" style="color: #910091">String</span> roleId = <span class="code-keyword" style="color: #000091">null</span>;
}
class Role {
@id@column(<span class="code-quote" style="color: #009100">"roleid"</span>)
<span class="code-keyword" style="color: #000091">private</span> <span class="code-object" style="color: #910091">String</span> id;
}
</pre>
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</div> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">The following HQL does not work:</p>
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<pre class="code-java" style="margin: 10px 0 0 0; margin-top: 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal">
delete from com.acme.Entity item where item.roleId in (...)
</pre>
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</div> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">However, navigating the relationship works</p>
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<pre class="code-java" style="margin: 10px 0 0 0; margin-top: 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal">
delete from com.acme.Entity item where item.role.id in (...)
</pre>
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</div> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">Stack trace:</p>
<div class="code panel" style="border-width: 1px;; border: 1px solid #cccccc; background: #f5f5f5; font-size: 12px; line-height: 1.333; font-family: monospace; border: 1px solid #cccccc; -moz-border-radius: 3px 3px 3px 3px; border-radius: 3px 3px 3px 3px; margin: 9px 0">
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<pre class="code-java" style="margin: 10px 0 0 0; margin-top: 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal">
java.lang.NullPointerException
at org.hibernate.internal.util.StringHelper.join(StringHelper.java:49) ~[hibernate-core-5.1.0.Final.jar:5.1.0.Final]
at org.hibernate.hql.internal.ast.tree.DotNode.initText(DotNode.java:251) ~[hibernate-core-5.1.0.Final.jar:5.1.0.Final]
at org.hibernate.hql.internal.ast.tree.DotNode.resolve(DotNode.java:244) ~[hibernate-core-5.1.0.Final.jar:5.1.0.Final]
at org.hibernate.hql.internal.ast.tree.FromReferenceNode.resolve(FromReferenceNode.java:109) ~[hibernate-core-5.1.0.Final.jar:5.1.0.Final]
at org.hibernate.hql.internal.ast.tree.FromReferenceNode.resolve(FromReferenceNode.java:104) ~[hibernate-core-5.1.0.Final.jar:5.1.0.Final]
at org.hibernate.hql.internal.ast.HqlSqlWalker.resolve(HqlSqlWalker.java:1013) ~[hibernate-core-5.1.0.Final.jar:5.1.0.Final]
at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.expr(HqlSqlBaseWalker.java:1286) ~[hibernate-core-5.1.0.Final.jar:5.1.0.Final]
at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.exprOrSubquery(HqlSqlBaseWalker.java:4713) ~[hibernate-core-5.1.0.Final.jar:5.1.0.Final]
at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.comparisonExpr(HqlSqlBaseWalker.java:4497) ~[hibernate-core-5.1.0.Final.jar:5.1.0.Final]
at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.logicalExpr(HqlSqlBaseWalker.java:2130) ~[hibernate-core-5.1.0.Final.jar:5.1.0.Final]
at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.logicalExpr(HqlSqlBaseWalker.java:2055) ~[hibernate-core-5.1.0.Final.jar:5.1.0.Final]
at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.whereClause(HqlSqlBaseWalker.java:813) ~[hibernate-core-5.1.0.Final.jar:5.1.0.Final]
at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.deleteStatement(HqlSqlBaseWalker.java:455) ~[hibernate-core-5.1.0.Final.jar:5.1.0.Final]
at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.statement(HqlSqlBaseWalker.java:275) ~[hibernate-core-5.1.0.Final.jar:5.1.0.Final]
at org.hibernate.hql.internal.ast.QueryTranslatorImpl.analyze(QueryTranslatorImpl.java:262) ~[hibernate-core-5.1.0.Final.jar:5.1.0.Final]
at org.hibernate.hql.internal.ast.QueryTranslatorImpl.doCompile(QueryTranslatorImpl.java:190) ~[hibernate-core-5.1.0.Final.jar:5.1.0.Final]
at org.hibernate.hql.internal.ast.QueryTranslatorImpl.compile(QueryTranslatorImpl.java:142) ~[hibernate-core-5.1.0.Final.jar:5.1.0.Final]
at org.hibernate.engine.query.spi.HQLQueryPlan.<init>(HQLQueryPlan.java:115) ~[hibernate-core-5.1.0.Final.jar:5.1.0.Final]
at org.hibernate.engine.query.spi.HQLQueryPlan.<init>(HQLQueryPlan.java:76) ~[hibernate-core-5.1.0.Final.jar:5.1.0.Final]
at org.hibernate.engine.query.spi.QueryPlanCache.getHQLQueryPlan(QueryPlanCache.java:150) ~[hibernate-core-5.1.0.Final.jar:5.1.0.Final]
at org.hibernate.internal.AbstractSessionImpl.getHQLQueryPlan(AbstractSessionImpl.java:302) ~[hibernate-core-5.1.0.Final.jar:5.1.0.Final]
at org.hibernate.internal.AbstractSessionImpl.createQuery(AbstractSessionImpl.java:240) ~[hibernate-core-5.1.0.Final.jar:5.1.0.Final]
at org.hibernate.internal.SessionImpl.createQuery(SessionImpl.java:1907) ~[hibernate-core-5.1.0.Final.jar:5.1.0.Final]
at com.acme.Dao.deleteAll
</pre>
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</div> <h2 style="margin: 10px 0 0 0; font-size: 20px; font-weight: normal; line-height: 1.500; margin: 40px 0 0 0"><a name="Comment" style="color: #3b73af; text-decoration: none"></a>Comment</h2> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">I want to report this as a bug because IMO the behaviour between select and delete is inconsistent (just replace "delete" with "from" keyword in the HQL and you get a query) AND because NPE is really really nasty, doesn't help you understand why the code failed, only that it failed for some reason.</p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">I don't see any reason to reject DELETEs based on the value of a Formula, especially if the formula reduces itself to a column and not a "real" formula.</p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">I would like to provide a test case but I am still new in reporting issues to Hibernate</p> </td>
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