/**
* Find a model for a scheme and id combo, false on fail
*
* @param string $schemeName Scheme name
* @param mixed $identity Identity
* @return One_Model
*/
public static function find($schemeName, $identity)
{
$key = "model.{$schemeName}.{$identity}";
if (!self::$registry) {
self::$registry = new One_Registry();
return false;
}
return self::$registry->get($key);
}
/**
* Select a single instance.
*
* @param mixed $scheme Can be the name of a One_Scheme or the One_Scheme object itself
* @param mixed $identityValue
* @return One_Model
*/
public function selectOne(One_Scheme_Interface $scheme, $identityValue)
{
$cached = One_Model_IdentityMap::find($scheme->getName(), $identityValue);
if ($cached) {
return $cached;
}
$db = $this->db($scheme);
$renderer = $this->getRenderer();
$query = One_Repository::selectQuery($scheme->getName());
$idAttr = $scheme->getIdentityAttribute();
$column = $idAttr->getName();
$value = $idAttr->toString($identityValue);
$query->where($column, 'eq', $value);
$result = $this->executeSchemeQuery($query);
return count($result) > 0 ? $result[0] : NULL;
}
/**
* Select a single instance.
*
* @param mixed $scheme Can be the name of a One_Scheme or the One_Scheme object itself
* @param mixed $identityValue
* @return One_Model
*/
public function selectOne(One_Scheme $scheme, $identityValue)
{
$cached = One_Model_IdentityMap::find($scheme->getName(), $identityValue);
if ($cached) {
return $cached;
}
$db = $this->db($scheme);
$connectionMeta = $scheme->getResources();
$collection = $db->selectCollection($connectionMeta['collection']);
try {
$result = $collection->findOne(array('_id' => new MongoId($identityValue)));
} catch (Exception $e) {
throw new One_Exception('Query failed: ' . $e->getMessage());
}
if (null !== $result) {
$result = $this->arrayToInstance($scheme, $result);
}
return $result;
}
