[2.0] DDC-279 - Commit testcase that shows it works.

tests/Doctrine/Tests/ORM/Functional/Ticket/DDC279Test.php

+<?php
+
+namespace Doctrine\Tests\ORM\Functional\Ticket;
+
+require_once __DIR__ . '/../../../TestInit.php';
+
+class DDC279Test extends \Doctrine\Tests\OrmFunctionalTestCase
+{
+    protected function setUp()
+    {
+        parent::setUp();
+        $this->_schemaTool->createSchema(array(
+            $this->_em->getClassMetadata(__NAMESPACE__ . '\DDC279EntityX'),
+            $this->_em->getClassMetadata(__NAMESPACE__ . '\DDC279EntityY'),
+            $this->_em->getClassMetadata(__NAMESPACE__ . '\DDC279EntityZ')
+        ));
+    }
+
+    /**
+     * @group DDC-279
+     */
+    public function testDDC279()
+    {
+        $x = new DDC279EntityX();
+        $y = new DDC279EntityY();
+        $z = new DDC279EntityZ();
+
+        $x->data = 'X';
+        $y->data = 'Y';
+        $z->data = 'Z';
+
+        $x->y = $y;
+        $y->z = $z;
+
+        $this->_em->persist($x);
+        $this->_em->persist($y);
+        $this->_em->persist($z);
+
+        $this->_em->flush();
+        $this->_em->clear();
+
+        $result = $this->_em->createQuery(
+            'SELECT x, y, z FROM Doctrine\Tests\ORM\Functional\Ticket\DDC279EntityX x '.
+            'INNER JOIN x.y y INNER JOIN y.z z WHERE x.id = 1'
+        )->getArrayResult();
+
+        $expected = array(
+            0 => array(
+                'id' => 1,
+                'data' => 'X',
+                'y' => array(
+                    'id' => 1,
+                    'data' => 'Y',
+                    'z' => array(
+                        'id' => 1,
+                        'data' => 'Z',
+                    )
+                ),
+            ),
+        );
+
+        $this->assertEquals($expected, $result);
+    }
+}
+
+/**
+ * @Entity
+ */
+class DDC279EntityX
+{
+    /**
+     * @Id
+     * @generatedValue(strategy="AUTO")
+     * @Column(name="id", type="integer")
+     */
+    public $id;
+
+    /**
+     * @column(type="string")
+     */
+    public $data;
+
+    /**
+     * @OneToOne(targetEntity="Doctrine\Tests\ORM\Functional\Ticket\DDC279EntityY")
+     * @JoinColumn(name="y_id", referencedColumnName="id")
+     */
+    public $y;
+}
+
+/**
+ * @Entity
+ */
+class DDC279EntityY
+{
+    /**
+     * @Id
+     * @generatedValue(strategy="AUTO")
+     * @Column(name="id", type="integer")
+     */
+    public $id;
+
+    /**
+     * @column(type="string")
+     */
+    public $data;
+
+    /**
+     * @OneToOne(targetEntity="Doctrine\Tests\ORM\Functional\Ticket\DDC279EntityZ")
+     * @JoinColumn(name="z_id", referencedColumnName="id")
+     */
+    public $z;
+}
+
+/**
+ * @Entity
+ */
+class DDC279EntityZ
+{
+    /**
+     * @Id
+     * @generatedValue(strategy="AUTO")
+     * @Column(name="id", type="integer")
+     */
+    public $id;
+
+    /**
+     * @column(type="string")
+     */
+    public $data;
+}
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