/**
* 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(12, $con);
* </code>
*
* @param mixed $key Primary key to use for the query
* @param ConnectionInterface $con an optional connection object
*
* @return ChildCourse|array|mixed the result, formatted by the current formatter
*/
public function findPk($key, ConnectionInterface $con = null)
{
if ($key === null) {
return null;
}
if (null !== ($obj = CourseTableMap::getInstanceFromPool((string) $key)) && !$this->formatter) {
// the object is already in the instance pool
return $obj;
}
if ($con === null) {
$con = Propel::getServiceContainer()->getReadConnection(CourseTableMap::DATABASE_NAME);
}
$this->basePreSelect($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);
}
}
/**
* The returned array will contain objects of the default type or
* objects that inherit from the default.
*
* @param DataFetcherInterface $dataFetcher
* @return array
* @throws PropelException Any exceptions caught during processing will be
* rethrown wrapped into a PropelException.
*/
public static function populateObjects(DataFetcherInterface $dataFetcher)
{
$results = array();
// set the class once to avoid overhead in the loop
$cls = static::getOMClass(false);
// populate the object(s)
while ($row = $dataFetcher->fetch()) {
$key = CourseTableMap::getPrimaryKeyHashFromRow($row, 0, $dataFetcher->getIndexType());
if (null !== ($obj = CourseTableMap::getInstanceFromPool($key))) {
// We no longer rehydrate the object, since this can cause data loss.
// See http://www.propelorm.org/ticket/509
// $obj->hydrate($row, 0, true); // rehydrate
$results[] = $obj;
} else {
/** @var Course $obj */
$obj = new $cls();
$obj->hydrate($row);
$results[] = $obj;
CourseTableMap::addInstanceToPool($obj, $key);
}
// if key exists
}
return $results;
}