/**
  * Find object by primary key
  * Use instance pooling to avoid a database query if the object exists
  * <code>
  * $obj  = $c->findPk(12, $con);
  * </code>
  * @param     mixed $key Primary key to use for the query
  * @param     PropelPDO $con an optional connection object
  *
  * @return    GroupRelTutor|array|mixed the result, formatted by the current formatter
  */
 public function findPk($key, $con = null)
 {
     if (null !== ($obj = GroupRelTutorPeer::getInstanceFromPool((string) $key)) && $this->getFormatter()->isObjectFormatter()) {
         // the object is alredy in the instance pool
         return $obj;
     } else {
         // the object has not been requested yet, or the formatter is not an object formatter
         $criteria = $this->isKeepQuery() ? clone $this : $this;
         $stmt = $criteria->filterByPrimaryKey($key)->getSelectStatement($con);
         return $criteria->getFormatter()->init($criteria)->formatOne($stmt);
     }
 }
 /**
  * Retrieve multiple objects by pkey.
  *
  * @param      array $pks List of primary keys
  * @param      PropelPDO $con the connection to use
  * @throws     PropelException Any exceptions caught during processing will be
  *		 rethrown wrapped into a PropelException.
  */
 public static function retrieveByPKs($pks, PropelPDO $con = null)
 {
     if ($con === null) {
         $con = Propel::getConnection(GroupRelTutorPeer::DATABASE_NAME, Propel::CONNECTION_READ);
     }
     $objs = null;
     if (empty($pks)) {
         $objs = array();
     } else {
         $criteria = new Criteria(GroupRelTutorPeer::DATABASE_NAME);
         $criteria->add(GroupRelTutorPeer::ID, $pks, Criteria::IN);
         $objs = GroupRelTutorPeer::doSelect($criteria, $con);
     }
     return $objs;
 }
 /**
  * Populates the object using an array.
  *
  * This is particularly useful when populating an object from one of the
  * request arrays (e.g. $_POST).  This method goes through the column
  * names, checking to see whether a matching key exists in populated
  * array. If so the setByName() method is called for that column.
  *
  * You can specify the key type of the array by additionally passing one
  * of the class type constants BasePeer::TYPE_PHPNAME, BasePeer::TYPE_STUDLYPHPNAME,
  * BasePeer::TYPE_COLNAME, BasePeer::TYPE_FIELDNAME, BasePeer::TYPE_NUM.
  * The default key type is the column's phpname (e.g. 'AuthorId')
  *
  * @param      array  $arr     An array to populate the object from.
  * @param      string $keyType The type of keys the array uses.
  * @return     void
  */
 public function fromArray($arr, $keyType = BasePeer::TYPE_PHPNAME)
 {
     $keys = GroupRelTutorPeer::getFieldNames($keyType);
     if (array_key_exists($keys[0], $arr)) {
         $this->setId($arr[$keys[0]]);
     }
     if (array_key_exists($keys[1], $arr)) {
         $this->setUserId($arr[$keys[1]]);
     }
     if (array_key_exists($keys[2], $arr)) {
         $this->setGroupId($arr[$keys[2]]);
     }
 }