/**
* Gets an array of BlogTagArticle 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 BlogArticle has previously been saved, it will retrieve
* related BlogTagArticles from storage. If this BlogArticle 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 $criteria
* @return array BlogTagArticle[]
* @throws PropelException
*/
public function getBlogTagArticles($criteria = null, PropelPDO $con = null)
{
if ($criteria === null) {
$criteria = new Criteria(BlogArticlePeer::DATABASE_NAME);
} elseif ($criteria instanceof Criteria) {
$criteria = clone $criteria;
}
if ($this->collBlogTagArticles === null) {
if ($this->isNew()) {
$this->collBlogTagArticles = array();
} else {
$criteria->add(BlogTagArticlePeer::ARTICLE_ID, $this->id);
BlogTagArticlePeer::addSelectColumns($criteria);
$this->collBlogTagArticles = BlogTagArticlePeer::doSelect($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(BlogTagArticlePeer::ARTICLE_ID, $this->id);
BlogTagArticlePeer::addSelectColumns($criteria);
if (!isset($this->lastBlogTagArticleCriteria) || !$this->lastBlogTagArticleCriteria->equals($criteria)) {
$this->collBlogTagArticles = BlogTagArticlePeer::doSelect($criteria, $con);
}
}
}
$this->lastBlogTagArticleCriteria = $criteria;
return $this->collBlogTagArticles;
}
/**
* Retrieve object using using composite pkey values.
* @param int $tag_id
@param int $article_id
* @param PropelPDO $con
* @return BlogTagArticle
*/
public static function retrieveByPK($tag_id, $article_id, PropelPDO $con = null)
{
$key = serialize(array((string) $tag_id, (string) $article_id));
if (null !== ($obj = BlogTagArticlePeer::getInstanceFromPool($key))) {
return $obj;
}
if ($con === null) {
$con = Propel::getConnection(BlogTagArticlePeer::DATABASE_NAME, Propel::CONNECTION_READ);
}
$criteria = new Criteria(BlogTagArticlePeer::DATABASE_NAME);
$criteria->add(BlogTagArticlePeer::TAG_ID, $tag_id);
$criteria->add(BlogTagArticlePeer::ARTICLE_ID, $article_id);
$v = BlogTagArticlePeer::doSelect($criteria, $con);
return !empty($v) ? $v[0] : null;
}