public function testSetOnce()
{
$page = new Page();
$page->title = 'Initial title';
$page->save();
$id = $page->id;
// Completely remove current instance
EntityPool::getInstance()->remove($page);
// Load fresh instance from database
$page = Page::findById($id);
// Disable update of 'title' attribute
$page->getAttribute('title')->setOnce()->setValue('New title');
$this->assertEquals('Initial title', $page->title);
$page->populate(['title' => 'Some title']);
$this->assertEquals('Initial title', $page->title);
// Try populating a null value attribute
$page->getAttribute('settings')->setOnce()->setValue([]);
$this->assertEquals([], $page->settings->val());
// Try updating an attribute that has a value already assigned to it
$page->settings = [1, 2, 3];
$this->assertEquals([], $page->settings->val());
// Enable update of 'title' attribute
$page->getAttribute('title')->setOnce(false)->setValue('New title');
$this->assertEquals('New title', $page->title);
}
/**
* (PHP 5 >= 5.0.0)<br/>
* Retrieve an external iterator
* @link http://php.net/manual/en/iteratoraggregate.getiterator.php
* @return Traversable An instance of an object implementing <b>Iterator</b> or
* <b>Traversable</b>
*/
public function getIterator()
{
if ($this->loaded) {
return new \ArrayIterator($this->value);
}
$dbItems = [];
foreach ($this->cursor as $data) {
$instance = new $this->entityClass();
$instance->populate($data)->setDirty(false);
/**
* Check if loaded instance is already in the pool and if yes - use the existing object
*/
if ($itemInPool = EntityPool::getInstance()->get($this->entityClass, $instance->getId()->getValue())) {
$dbItems[] = $itemInPool;
} else {
$dbItems[] = EntityPool::getInstance()->add($instance);
}
}
$this->value = array_merge($dbItems, $this->value);
$this->loaded = true;
return new \ArrayIterator($this->value);
}