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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-11526" style="color: #3b73af; text-decoration: none"><img src="cid:jira-generated-image-avatar-1a546197-c2ba-4de5-b4ee-6cf95492404c" height="16" width="16" border="0" align="absmiddle" alt="Bug" style="vertical-align: text-bottom"></a> <a href="https://hibernate.atlassian.net/browse/HHH-11526" style="color: #3b73af; text-decoration: none">HHH-11526</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-11526" style="color: #3b73af; text-decoration: none">Custom collection types was introduced in 5.2.x</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="stephen.fikes" id="email_stephen.fikes" href="https://hibernate.atlassian.net/secure/ViewProfile.jspa?name=stephen.fikes" style="color:#6c797f;; color: #3b73af; text-decoration: none">Stephen Fikes</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">{quote}Hibernate uses its own collection implementations which are enriched with lazy-loading, caching or state change detection semantics. For this reason, persistent collections must be declared as an interface type. The actual interface might be java.util.Collection, java.util.List, java.util.Set, java.util.Map, java.util.SortedSet, java.util.SortedMap or even other object types (meaning you will have to write an implementation of org.hibernate.usertype.UserCollectionType).{quote}<br><br>[Hibernate 5.2 User Guide section 2.8|http://docs.jboss.org/hibernate/orm/5.2/userguide/html_single/Hibernate_User_Guide.html#collections]<br><br>{quote}The reason why the Queue interface is not used for the entity attribute is because Hibernate only allows the following types:<br><br> java.util.List<br><br> java.util.Set<br><br> java.util.Map<br><br> java.util.SortedSet<br><br> java.util.SortedMap<br>{quote}<br></span> <span class="diffaddedchars" style="background-color:#ddfade;"><br>"</span> <span class="diffcontext">Example 192. Custom collection mapping example</span> <span class="diffaddedchars" style="background-color:#ddfade;">" omits an example of getters and setters.</span> <span class="diffcontext"><br><br>[Hibernate 5.2 User Guide section 2.8.12|http://docs.jboss.org/hibernate/orm/5.2/userguide/html_single/Hibernate_User_Guide.html#collections-custom]</span> <span class="diffaddedchars" style="background-color:#ddfade;"><br><br>It is possible to use alternative interfaces (e.g. Queue) for the getter/setter provided annotations are on the field rather than the methods. For instance, the following should work.<br><br>{code}<br>@Entity(name = "Person")<br>public static class Person {<br> ...<br> @OneToMany(cascade = CascadeType.ALL)<br> @CollectionType( type = "org.hibernate.userguide.collections.type.QueueType")<br> private Collection<Phone> phones = new LinkedList<>();<br><br> public Queue<Phone> getPhones() {<br> return (Queue<Phone>) phones;<br> }<br>}<br>{code}<br><br>If the getter is annotated, it must be marked with one of the types mentioned in above but can be cast by code using the entity.</span> </td>
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