protected function _preStore()
{
$type = $this->getType();
$value = $this->getValue();
if (isset($type) and isset($value) and $type === 'urn') {
$finder = new Opus_DocumentFinder();
$docIds = $finder->setIdentifierTypeValue('urn', $value)->ids();
$errorMsg = "urn collision (documents " . implode(",", $docIds) . ")";
if ($this->isNewRecord() and count($docIds) > 0) {
throw new Opus_Identifier_UrnAlreadyExistsException($errorMsg);
}
if (count($docIds) > 1) {
throw new Opus_Identifier_UrnAlreadyExistsException($errorMsg);
}
if (count($docIds) == 1 and !in_array($this->getParentId(), $docIds)) {
throw new Opus_Identifier_UrnAlreadyExistsException($errorMsg);
}
}
return parent::_preStore();
}
/**
* Return the primary key of the Link Model if it has been persisted.
*
* @return array|null Primary key or Null if the Linked Model has not been persisted.
*/
public function getId()
{
// The given id consists of the ids of the referenced linked models,
// but there is no evidence that the LinkModel itself has been persisted yet.
// We so have to validate, if the LinkModel is persistent or still transient.
if (true === $this->isNewRecord()) {
// its a new record, so return null
return null;
}
// its not a new record, so we can hand over to the parent method
return parent::getId();
}
/**
* This model is valid IFF both link model *and* linked model are valid.
*
* @return boolean
*/
public function isValid()
{
return $this->_model->isValid() && parent::isValid();
}
/**
* Deletes a file from filespace and if directory are empty it will be deleted too.
*
* @see library/Opus/Model/Opus_Model_AbstractDb#doDelete()
* @throws Opus_Storage_Exception if not a file, or empty directory could not be deleted
* @throws Opus_Storage_FileNotFoundException if file does not exist
* @throws Opus_Storage_FileAccessException if file could not be deleted
* @return void
*/
public function doDelete($token)
{
parent::doDelete($token);
$this->getStorage()->deleteFile($this->getPathName());
// TODO: Check return value of removeEmptyDirectory()?
$this->getStorage()->removeEmptyDirectory();
}