hasColumn('parent_id', 'integer'); $this->hasOne('TreeLeaf as Parent', 'TreeLeaf.parent_id', 'id'); $this->hasMany('TreeLeaf as Children', 'TreeLeaf.parent_id'); } } class Doctrine_TreeStructure_TestCase extends Doctrine_UnitTestCase { public function prepareTables() { } /* we don't need the standard tables here */ public function prepareData() { } /* we don't need the standard data here */ public function testSelfReferentialRelationship() { $component = new TreeLeaf(); try { $rel = $component->getTable()->getRelation('Parent'); $rel = $component->getTable()->getRelation('Children'); $this->pass(); } catch(Doctrine_Exception $e) { $this->fail(); } } public function testTreeLeafRelationships() { /* structure: * * o1 * -> o2 * -> o3 * * o4 * * thus it would be expected that o1 has 2 children and o4 is a * leaf with no parents or children. */ $o1 = new TreeLeaf(); $o1->Parent = null; $o1->save(); $o2 = new TreeLeaf(); $o2->Parent = $o1; $o2->save(); $o3 = new TreeLeaf(); $o3->Parent = $o1; $o3->save(); $o1->refresh(); $o4 = new TreeLeaf(); $o4->save(); $this->assertFalse(isset($o1->Parent)); $this->assertTrue(count($o1->Children) == 2); $this->assertTrue(count($o1->get('Children')) == 2); $this->assertTrue(isset($o2->Parent)); $this->assertTrue($o2->Parent == $o1); $this->assertTrue(count($o4->Children) == 0); $this->assertFalse(isset($o4->Parent)); } }