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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/JPA" style="color: #3b73af; text-decoration: none">Java Persistence API</a> / <a href="https://hibernate.atlassian.net/browse/JPA-75" style="color: #3b73af; text-decoration: none"><img src="cid:jira-generated-image-avatar-b49314da-b685-4e58-988f-099015ee856e" height="16" width="16" border="0" align="absmiddle" alt="Bug" style="vertical-align: text-bottom"></a> <a href="https://hibernate.atlassian.net/browse/JPA-75" style="color: #3b73af; text-decoration: none">JPA-75</a> </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="steve" id="email_steve" href="https://hibernate.atlassian.net/secure/ViewProfile.jspa?name=steve" style="color:#6c797f;; color: #3b73af; text-decoration: none">Steve Ebersole</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"> <span class="diffcontext">JPA 2.1 specification, section 4.6.17.3, describes the support for FUNCTION construct that allows me to call any function from DB. I tried that, but Hibernate 5.1.0 failed in two ways. For my tests I mapped DUAL table from H2, but that should not matter. For:<br>{</span> <span class="diffremovedchars" style="background-color: #ffe7e7; text-decoration:line-through;">{{</span> <span class="diffaddedchars" style="background-color:#ddfade;">code}</span> <span class="diffcontext"><br>select FUNCTION('random_uuid') from org.hibernate.bugs.model.Dual dual<br></span> <span class="diffaddedchars" style="background-color:#ddfade;">{code</span> <span class="diffcontext">}</span> <span class="diffremovedchars" style="background-color: #ffe7e7; text-decoration:line-through;">}}</span> <span class="diffcontext"><br></span> <span class="diffaddedchars" style="background-color:#ddfade;"><br></span> <span class="diffcontext">It throws:<br>{</span> <span class="diffremovedchars" style="background-color: #ffe7e7; text-decoration:line-through;">{{</span> <span class="diffaddedchars" style="background-color:#ddfade;">noformat}</span> <span class="diffcontext"><br>java.lang.IllegalArgumentException: org.hibernate.hql.internal.ast.QuerySyntaxException: expecting COMMA, found ')' near line 1, column 30 [select FUNCTION('random_uuid') from org.hibernate.bugs.model.Dual dual]<br></span> <span class="diffaddedchars" style="background-color:#ddfade;">{noformat</span> <span class="diffcontext">}</span> <span class="diffremovedchars" style="background-color: #ffe7e7; text-decoration:line-through;">}}</span> <span class="diffcontext"><br>Seems it cannot even parse it for no-arg functions, that's a grammar/parse problem.<br><br>I tried something with an argument then:<br>{</span> <span class="diffremovedchars" style="background-color: #ffe7e7; text-decoration:line-through;">{{</span> <span class="diffaddedchars" style="background-color:#ddfade;">code}</span> <span class="diffcontext"><br>Object result = em.createQuery("select FUNCTION('random', 3) from Dual dual")<br> .getSingleResult();<br></span> <span class="diffaddedchars" style="background-color:#ddfade;">{code</span> <span class="diffcontext">}</span> <span class="diffremovedchars" style="background-color: #ffe7e7; text-decoration:line-through;">}}</span> <span class="diffcontext"><br></span> <span class="diffaddedchars" style="background-color:#ddfade;"><br></span> <span class="diffcontext">And this failed with:<br>{</span> <span class="diffremovedchars" style="background-color: #ffe7e7; text-decoration:line-through;">{{</span> <span class="diffaddedchars" style="background-color:#ddfade;">noformat}</span> <span class="diffcontext"><br>java.lang.IllegalStateException: No data type for node: org.hibernate.hql.internal.ast.tree.MethodNode <br> \-[METHOD_CALL] MethodNode: 'FUNCTION (random)'<br> +-[METHOD_NAME] IdentNode: 'random' {originalText=random}<br> \-[EXPR_LIST] SqlNode: 'exprList'<br> \-[NUM_INT] LiteralNode: '3'<br></span> <span class="diffaddedchars" style="background-color:#ddfade;">{noformat</span> <span class="diffcontext">}</span> <span class="diffremovedchars" style="background-color: #ffe7e7; text-decoration:line-through;">}}</span> <span class="diffcontext"><br></span> <span class="diffaddedchars" style="background-color:#ddfade;"><br></span> <span class="diffcontext">From the point of JPA 2.1 spec I have no idea what I should do with this.<br><br>I provide a Maven-based test case on https://github.com/virgo47/litterbin/tree/master/issues/hibernate-jpa21-function - this can be easily run from bash/cmd:<br>{</span> <span class="diffremovedchars" style="background-color: #ffe7e7; text-decoration:line-through;">{{</span> <span class="diffaddedchars" style="background-color:#ddfade;">noformat}</span> <span class="diffcontext"><br>svn export https://github.com/virgo47/litterbin/trunk/issues/hibernate-jpa21-function<br>cd hibernate-jpa21-function<br>mvn clear test<br></span> <span class="diffaddedchars" style="background-color:#ddfade;">{noformat</span> <span class="diffcontext">}</span> <span class="diffremovedchars" style="background-color: #ffe7e7; text-decoration:line-through;">}}</span> <span class="diffcontext"><br></span> <span class="diffaddedchars" style="background-color:#ddfade;"><br></span> <span class="diffcontext">Both test should pass. As a cross-reference, I added dependency on EclipseLink. Just switch commented lines in {{src/main/resources/META-INF/persistence.xml}} to enable EclipseLink and re-run mvn. Both tests pass.<br><br>I found nothing in the User docs (http://docs.jboss.org/hibernate/orm/5.0/userGuide/en-US/html_single). I believe section 13.4.8.3. Non-standardized functions is Hibernate specific and not JPA 2.1 standard. (From the rough check in the user doc, also JPA 2.1 TREAT seems to be unsupported, BTW.)</span> </td>
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