/**
	 * Find object by primary key.
	 * Propel uses the instance pool to skip the database if the object exists.
	 * Go fast if the query is untouched.
	 *
	 * <code>
	 * $obj = $c->findPk(array(12, 34), $con);
	 * </code>
	 *
	 * @param     array[$id, $version] $key Primary key to use for the query
	 * @param     PropelPDO $con an optional connection object
	 *
	 * @return    AbsenceEleveSaisieVersion|array|mixed the result, formatted by the current formatter
	 */
	public function findPk($key, $con = null)
	{
		if ($key === null) {
			return null;
		}
		if ((null !== ($obj = AbsenceEleveSaisieVersionPeer::getInstanceFromPool(serialize(array((string) $key[0], (string) $key[1]))))) && !$this->formatter) {
			// the object is alredy in the instance pool
			return $obj;
		}
		if ($con === null) {
			$con = Propel::getConnection(AbsenceEleveSaisieVersionPeer::DATABASE_NAME, Propel::CONNECTION_READ);
		}
		$this->basePreSelect($con);
		if ($this->formatter || $this->modelAlias || $this->with || $this->select
		 || $this->selectColumns || $this->asColumns || $this->selectModifiers
		 || $this->map || $this->having || $this->joins) {
			return $this->findPkComplex($key, $con);
		} else {
			return $this->findPkSimple($key, $con);
		}
	}
	/**
	 * Retrieve object using using composite pkey values.
	 * @param      int $id
	 * @param      int $version
	 * @param      PropelPDO $con
	 * @return     AbsenceEleveSaisieVersion
	 */
	public static function retrieveByPK($id, $version, PropelPDO $con = null) {
		$_instancePoolKey = serialize(array((string) $id, (string) $version));
 		if (null !== ($obj = AbsenceEleveSaisieVersionPeer::getInstanceFromPool($_instancePoolKey))) {
 			return $obj;
		}

		if ($con === null) {
			$con = Propel::getConnection(AbsenceEleveSaisieVersionPeer::DATABASE_NAME, Propel::CONNECTION_READ);
		}
		$criteria = new Criteria(AbsenceEleveSaisieVersionPeer::DATABASE_NAME);
		$criteria->add(AbsenceEleveSaisieVersionPeer::ID, $id);
		$criteria->add(AbsenceEleveSaisieVersionPeer::VERSION, $version);
		$v = AbsenceEleveSaisieVersionPeer::doSelect($criteria, $con);

		return !empty($v) ? $v[0] : null;
	}