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<?php
namespace Kanboard\Model;
/**
* Metadata
*
* @package model
* @author Frederic Guillot
*/
abstract class Metadata extends Base
{
/**
* Define the entity key
*
* @abstract
* @access protected
* @return string
*/
abstract protected function getEntityKey();
/**
* Get all metadata for the entity
*
* @access public
* @param integer $entity_id
* @return array
*/
public function getAll($entity_id)
{
return $this->db
->hashtable(static::TABLE)
->eq($this->getEntityKey(), $entity_id)
->asc('name')
->getAll('name', 'value');
}
/**
* Get a metadata for the given entity
*
* @access public
* @param integer $entity_id
* @param string $name
* @param string $default
* @return mixed
*/
public function get($entity_id, $name, $default = '')
{
return $this->db
->table(static::TABLE)
->eq($this->getEntityKey(), $entity_id)
->eq('name', $name)
->findOneColumn('value') ?: $default;
}
/**
* Return true if a metadata exists
*
* @access public
* @param integer $entity_id
* @param string $name
* @return boolean
*/
public function exists($entity_id, $name)
{
return $this->db
->table(static::TABLE)
->eq($this->getEntityKey(), $entity_id)
->eq('name', $name)
->exists();
}
/**
* Update or insert new metadata
*
* @access public
* @param integer $entity_id
* @param array $values
*/
public function save($entity_id, array $values)
{
$results = array();
$this->db->startTransaction();
foreach ($values as $key => $value) {
if ($this->exists($entity_id, $key)) {
$results[] = $this->db->table(static::TABLE)->eq($this->getEntityKey(), $entity_id)->eq('name', $key)->update(array('value' => $value));
} else {
$results[] = $this->db->table(static::TABLE)->insert(array('name' => $key, 'value' => $value, $this->getEntityKey() => $entity_id));
}
}
$this->db->closeTransaction();
return ! in_array(false, $results, true);
}
/**
* Remove a metadata
*
* @access public
* @param integer $entity_id
* @param string $name
* @return bool
*/
public function remove($entity_id, $name)
{
$this->db->startTransaction();
if (! $this->db->table(static::TABLE)->eq($this->getEntityKey(), $entity_id)->eq('name', $name)->remove()) {
$this->db->cancelTransaction();
return false;
}
$this->db->closeTransaction();
return true;
}
}
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