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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" style="color: #3b73af; text-decoration: none">Hibernate ORM</a> / <a href="https://hibernate.atlassian.net/browse/HHH-11040" style="color: #3b73af; text-decoration: none"><img src="cid:jira-generated-image-avatar-871656f9-f42b-43e9-b8b7-59f5d67e7b71" height="16" width="16" border="0" align="absmiddle" alt="Improvement" style="vertical-align: text-bottom"></a> <a href="https://hibernate.atlassian.net/browse/HHH-11040" style="color: #3b73af; text-decoration: none">HHH-11040</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-11040" style="color: #3b73af; text-decoration: none">ClassCastException: Using a region shared by entity caching on a collection cache</a> </span> </td>
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<th style="color: #707070; font: normal 14px/20px Arial, sans-serif; text-align: left; vertical-align: top; padding: 2px 0">Change By:</th>
<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="strickjb" id="email_strickjb" href="https://hibernate.atlassian.net/secure/ViewProfile.jspa?name=strickjb" style="color:#6c797f;; color: #3b73af; text-decoration: none">John Strickler</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">If a region is specified as both an Entity region (class level) and a Collection region (on a @OneToMany association) then it will result in a ClassCastException on startup.<br><br>I originally used the same region name because I believed that they would pull from the same cache. <br><br></span> <span class="diffremovedchars" style="background-color: #ffe7e7; text-decoration:line-through;">+Possible solution?+</span> <span class="diffcontext"><br></span> <span class="diffremovedchars" style="background-color: #ffe7e7; text-decoration:line-through;">_I believe that SessionFactoryImpl#determineCollectionRegionAccessStrategy should pull and cast from cacheAccessStrategiesMap as RegionAccessStrategy. Then check if the accessStrategy is an instanceof CollectionRegionAccessStrategy._</span> <span class="diffcontext"><br><br></span> <span class="diffremovedchars" style="background-color: #ffe7e7; text-decoration:line-through;"><br><br></span> <span class="diffcontext">{code:java}<br>// shares a region with the collection cache<br>@Cache(region="com.test.EntityA")<br>public class EntityA {<br> <br>}<br><br>public class EntityB {<br> // Shares a region<br> @Cache(region="com.test.EntityA")<br> public List<EntityA> getEntities() {<br> return entities;<br> }<br>}<br>{code}<br><br><br><br><br>Caused by: java.lang.ClassCastException: org.hibernate.cache.ehcache.internal.nonstop.NonstopAwareEntityRegionAccessStrategy cannot be cast to org.hibernate.cache.spi.access.CollectionRegionAccessStrategy<br> at org.hibernate.internal.SessionFactoryImpl.determineCollectionRegionAccessStrategy(SessionFactoryImpl.java:624)<br> at org.hibernate.internal.SessionFactoryImpl.<init>(SessionFactoryImpl.java:389)<br> at org.hibernate.boot.internal.SessionFactoryBuilderImpl.build(SessionFactoryBuilderImpl.java:465)<br> at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:708)<br> at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:724)<br> at org.springframework.orm.hibernate4.LocalSessionFactoryBuilder.buildSessionFactory(LocalSessionFactoryBuilder.java:372)<br> at org.springframework.orm.hibernate4.LocalSessionFactoryBean.buildSessionFactory(LocalSessionFactoryBean.java:454)<br> at org.springframework.orm.hibernate4.LocalSessionFactoryBean.afterPropertiesSet(LocalSessionFactoryBean.java:439)<br> at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1637)<br> at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1574)<br> ... 59 more}}<br></span> </td>
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