/**
@param $url String
@return $item OmekaItem || null
Tries to fetch an OmekaItem given its URL.
Obeys Omeka->$dbUsage.
*/
public static function getItemFromUrl($url)
{
if (Config::getOmeka()->getDbUsage()) {
return self::getItemFromDbByUrl($url);
} else {
if (self::$urlItemMap === null) {
self::$urlItemMap = array();
foreach (Config::getOmeka()->getItems() as $item) {
self::$urlItemMap[$item->getUrl()] = $item;
}
}
if (array_key_exists($url, self::$urlItemMap)) {
return self::$urlItemMap[$url];
}
return null;
}
}
/**
@param $urn String urn of an OmekaItem
@return $item OmekaItem||null
This method obeys $dbUsage.
In case of $dbUsage getItem doesn't trigger all items to be fetched.
*/
public function getItem($urn)
{
if ($this->items === null) {
if ($this->getDbUsage()) {
return OmekaItem::getItemFromDb($urn);
} else {
$this->getItems();
}
}
if (array_key_exists($urn, $this->items)) {
return $this->items[$urn];
}
return null;
}
/**
@return $item OmekaItem || null
Tries to return the OmekaItem that this file belongs to.
Obeys Omeka->$dbUsage.
*/
public function getItem()
{
return OmekaItem::getItemFromUrl($this->getItemUrl());
}