/**
  * Gets an array of CourseCommentDig objects which contain a foreign key that references this object.
  *
  * If this collection has already been initialized with an identical Criteria, it returns the collection.
  * Otherwise if this CourseComment has previously been saved, it will retrieve
  * related CourseCommentDigs from storage. If this CourseComment is new, it will return
  * an empty collection or the current collection, the criteria is ignored on a new object.
  *
  * @param      PropelPDO $con
  * @param      Criteria $criteria
  * @return     array CourseCommentDig[]
  * @throws     PropelException
  */
 public function getCourseCommentDigs($criteria = null, PropelPDO $con = null)
 {
     if ($criteria === null) {
         $criteria = new Criteria(CourseCommentPeer::DATABASE_NAME);
     } elseif ($criteria instanceof Criteria) {
         $criteria = clone $criteria;
     }
     if ($this->collCourseCommentDigs === null) {
         if ($this->isNew()) {
             $this->collCourseCommentDigs = array();
         } else {
             $criteria->add(CourseCommentDigPeer::COMMENT_ID, $this->id);
             CourseCommentDigPeer::addSelectColumns($criteria);
             $this->collCourseCommentDigs = CourseCommentDigPeer::doSelect($criteria, $con);
         }
     } else {
         // criteria has no effect for a new object
         if (!$this->isNew()) {
             // the following code is to determine if a new query is
             // called for.  If the criteria is the same as the last
             // one, just return the collection.
             $criteria->add(CourseCommentDigPeer::COMMENT_ID, $this->id);
             CourseCommentDigPeer::addSelectColumns($criteria);
             if (!isset($this->lastCourseCommentDigCriteria) || !$this->lastCourseCommentDigCriteria->equals($criteria)) {
                 $this->collCourseCommentDigs = CourseCommentDigPeer::doSelect($criteria, $con);
             }
         }
     }
     $this->lastCourseCommentDigCriteria = $criteria;
     return $this->collCourseCommentDigs;
 }
 /**
  * Selects a collection of CourseCommentDig objects pre-filled with all related objects.
  *
  * @param      Criteria  $c
  * @param      PropelPDO $con
  * @param      String    $join_behavior the type of joins to use, defaults to Criteria::LEFT_JOIN
  * @return     array Array of CourseCommentDig objects.
  * @throws     PropelException Any exceptions caught during processing will be
  *		 rethrown wrapped into a PropelException.
  */
 public static function doSelectJoinAll(Criteria $c, $con = null, $join_behavior = Criteria::LEFT_JOIN)
 {
     foreach (sfMixer::getCallables('BaseCourseCommentDigPeer:doSelectJoinAll:doSelectJoinAll') as $callable) {
         call_user_func($callable, 'BaseCourseCommentDigPeer', $c, $con);
     }
     $c = clone $c;
     // Set the correct dbName if it has not been overridden
     if ($c->getDbName() == Propel::getDefaultDB()) {
         $c->setDbName(self::DATABASE_NAME);
     }
     CourseCommentDigPeer::addSelectColumns($c);
     $startcol2 = CourseCommentDigPeer::NUM_COLUMNS - CourseCommentDigPeer::NUM_LAZY_LOAD_COLUMNS;
     CourseCommentPeer::addSelectColumns($c);
     $startcol3 = $startcol2 + (CourseCommentPeer::NUM_COLUMNS - CourseCommentPeer::NUM_LAZY_LOAD_COLUMNS);
     $c->addJoin(array(CourseCommentDigPeer::COMMENT_ID), array(CourseCommentPeer::ID), $join_behavior);
     $stmt = BasePeer::doSelect($c, $con);
     $results = array();
     while ($row = $stmt->fetch(PDO::FETCH_NUM)) {
         $key1 = CourseCommentDigPeer::getPrimaryKeyHashFromRow($row, 0);
         if (null !== ($obj1 = CourseCommentDigPeer::getInstanceFromPool($key1))) {
             // We no longer rehydrate the object, since this can cause data loss.
             // See http://propel.phpdb.org/trac/ticket/509
             // $obj1->hydrate($row, 0, true); // rehydrate
         } else {
             $omClass = CourseCommentDigPeer::getOMClass();
             $cls = substr('.' . $omClass, strrpos('.' . $omClass, '.') + 1);
             $obj1 = new $cls();
             $obj1->hydrate($row);
             CourseCommentDigPeer::addInstanceToPool($obj1, $key1);
         }
         // if obj1 already loaded
         // Add objects for joined CourseComment rows
         $key2 = CourseCommentPeer::getPrimaryKeyHashFromRow($row, $startcol2);
         if ($key2 !== null) {
             $obj2 = CourseCommentPeer::getInstanceFromPool($key2);
             if (!$obj2) {
                 $omClass = CourseCommentPeer::getOMClass();
                 $cls = substr('.' . $omClass, strrpos('.' . $omClass, '.') + 1);
                 $obj2 = new $cls();
                 $obj2->hydrate($row, $startcol2);
                 CourseCommentPeer::addInstanceToPool($obj2, $key2);
             }
             // if obj2 loaded
             // Add the $obj1 (CourseCommentDig) to the collection in $obj2 (CourseComment)
             $obj2->addCourseCommentDig($obj1);
         }
         // if joined row not null
         $results[] = $obj1;
     }
     $stmt->closeCursor();
     return $results;
 }