silverstripe-framework/tests/php/ORM/DataObjectTest/TreeNode.php

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<?php
namespace SilverStripe\ORM\Tests\DataObjectTest;
use SilverStripe\Dev\TestOnly;
use SilverStripe\ORM\Connect\Query;
use SilverStripe\ORM\DataObject;
use SilverStripe\ORM\DB;
use SilverStripe\ORM\HasManyList;
use SilverStripe\ORM\Hierarchy\Hierarchy;
use SilverStripe\ORM\ManyManyList;
use SilverStripe\ORM\Queries\SQLUpdate;
/**
* The purpose of this test class is to test recursive writes and make sure we don't get stuck in an infinite loop.
* @property int $WriteCount Number of times this object was written sine the last call of `resetCount`
*/
class TreeNode extends DataObject implements TestOnly
{
private static $table_name = 'DataObjectTest_TreeNode';
private static $db = [
'Title' => 'Varchar',
'WriteCount' => 'Int'
];
private static $has_one = [
'Parent' => self::class,
'Cycle' => self::class,
];
private static $has_many = [
'Children' => self::class,
];
public function write($showDebug = false, $forceInsert = false, $forceWrite = false, $writeComponents = false)
{
// Force the component to fetch its Parent and Cycle relation so we have components to recursively write
$this->Parent;
$this->Cycle;
// Count a write attempts
$this->WriteCount++;
return parent::write($showDebug, $forceInsert, $forceWrite, $writeComponents);
}
/**
* Reset the WriteCount on all TreeNodes
*/
public function resetCounts()
{
$update = new SQLUpdate(
sprintf('"%s"', self::baseTable()),
['"WriteCount"' => 0]
);
$results = $update->execute();
}
}