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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-12999?atlOrigin=eyJpIjoiYWE4OGNhOTY5MGRmNGMyOWJhZTFlZmMyNzE5ZDAxMGYiLCJwIjoiaiJ9" style="color: #3b73af; text-decoration: none">Re: Projected criteria query: Useless and problematic inner join on optional referenced entity</a> </span> </td>
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<td class="text-paragraph-pattern-container mobile-resize-text " style="padding: 0; border-collapse: collapse; padding: 0 0 10px"> <p style="margin: 10px 0 0; margin-top: 0"><a href="https://hibernate.atlassian.net/secure/ViewProfile.jspa?name=jschauder" class="user-hover" rel="jschauder" style="color: #3b73af; text-decoration: none">Jens Schauder</a> USe the following test to see how to use the <tt>Tuple</tt> and fetch the entity:</p>
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<pre class="code-java" style="margin: 10px 0 0; margin-top: 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal">
<span class="code-keyword" style="color: #000091">public</span> <span class="code-keyword" style="color: #000091">class </span>ORMUnitTestCase <span class="code-keyword" style="color: #000091">extends</span> BaseCoreFunctionalTestCase {
<span class="code-comment" style="color: #808080">// Add your entities here.
</span> @Override
<span class="code-keyword" style="color: #000091">protected</span> <span class="code-object" style="color: #910091">Class</span>[] getAnnotatedClasses() {
<span class="code-keyword" style="color: #000091">return</span> <span class="code-keyword" style="color: #000091">new</span> <span class="code-object" style="color: #910091">Class</span>[]{
Parent.class,
Child.class
};
}
<span class="code-comment" style="color: #808080">// Add in any settings that are specific to your test. See resources/hibernate.properties <span class="code-keyword" style="color: #000091; color: #808080">for</span> the defaults.
</span> @Override
<span class="code-keyword" style="color: #000091">protected</span> void configure(Configuration configuration) {
<span class="code-keyword" style="color: #000091">super</span>.configure(configuration);
configuration.setProperty(AvailableSettings.SHOW_SQL, <span class="code-object" style="color: #910091">Boolean</span>.TRUE.toString());
configuration.setProperty(AvailableSettings.FORMAT_SQL, <span class="code-object" style="color: #910091">Boolean</span>.TRUE.toString());
<span class="code-comment" style="color: #808080">//configuration.setProperty( AvailableSettings.GENERATE_STATISTICS, <span class="code-quote" style="color: #009100; color: #808080">"<span class="code-keyword" style="color: #000091; color: #009100; color: #808080">true</span>"</span> );
</span> }
@Test
<span class="code-keyword" style="color: #000091">public</span> void hhh12999Tuple() <span class="code-keyword" style="color: #000091">throws</span> Exception {
<span class="code-comment" style="color: #808080">// BaseCoreFunctionalTestCase automatically creates the SessionFactory and provides the Session.
</span> Session s = openSession();
Transaction tx = s.beginTransaction();
Parent parentWithoutChild = <span class="code-keyword" style="color: #000091">new</span> Parent();
parentWithoutChild.setId( 1L );
Parent parentWithChild = <span class="code-keyword" style="color: #000091">new</span> Parent();
parentWithChild.setId( 2L );
Child child = <span class="code-keyword" style="color: #000091">new</span> Child();
child.id = 123L;
parentWithChild.setChild(child);
s.persist(parentWithChild.getChild());
s.persist(parentWithChild);
s.persist(parentWithoutChild);
s.flush();
CriteriaBuilder cb = s.getCriteriaBuilder();
CriteriaQuery<Tuple> cq = cb.createQuery( Tuple.class );
Root<Parent> parentRoot = cq.from( Parent.class );
cq.multiselect( parentRoot.get( <span class="code-quote" style="color: #009100">"id"</span> ), parentRoot.get( <span class="code-quote" style="color: #009100">"child"</span> ) );
TypedQuery<Tuple> typedQuery = s.createQuery( cq );
List<Tuple> result = typedQuery.getResultList();
assertEquals(2L, result.get( 0 ).get( 0 ));
Child childEntity = (Child) result.get( 0 ).get( 1 );
assertEquals(123L, (<span class="code-object" style="color: #910091">long</span>) childEntity.id);
tx.rollback();
s.close();
}
@Entity(name = <span class="code-quote" style="color: #009100">"Child"</span>)
<span class="code-keyword" style="color: #000091">public</span> <span class="code-keyword" style="color: #000091">static</span> <span class="code-keyword" style="color: #000091">class </span>Child {
@Id
<span class="code-object" style="color: #910091">Long</span> id;
}
@Entity(name = <span class="code-quote" style="color: #009100">"Parent"</span>)
<span class="code-keyword" style="color: #000091">public</span> <span class="code-keyword" style="color: #000091">static</span> <span class="code-keyword" style="color: #000091">class </span>Parent {
@Id
<span class="code-keyword" style="color: #000091">private</span> <span class="code-object" style="color: #910091">Long</span> id;
@OneToOne(fetch = FetchType.LAZY)
<span class="code-keyword" style="color: #000091">private</span> Child child;
<span class="code-keyword" style="color: #000091">public</span> Child getChild() {
<span class="code-keyword" style="color: #000091">return</span> child;
}
<span class="code-keyword" style="color: #000091">public</span> void setChild(Child child) {
<span class="code-keyword" style="color: #000091">this</span>.child = child;
}
<span class="code-keyword" style="color: #000091">public</span> <span class="code-object" style="color: #910091">Long</span> getId() {
<span class="code-keyword" style="color: #000091">return</span> id;
}
<span class="code-keyword" style="color: #000091">public</span> void setId(<span class="code-object" style="color: #910091">Long</span> id) {
<span class="code-keyword" style="color: #000091">this</span>.id = id;
}
}
}
</pre>
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