/**
* @see FileInterface::delete_version()
* @param integer $internal_revision
* @return bool
*/
public function delete_version($internal_revision)
{
global $transaction;
if ($this->file_id and $this->file and $this->file_version) {
if (is_numeric($internal_revision)) {
$transaction_id = $transaction->begin();
$folder_id = $this->get_parent_folder_id();
$folder = Folder::get_instance($folder_id);
$this->open_internal_revision($internal_revision);
$number_of_root_major_versions = FileVersion_Access::get_number_of_root_major_versions_by_toid($this->file_id);
if ($number_of_root_major_versions > 1) {
$file_version_id = FileVersion_Access::get_entry_by_toid_and_internal_revision($this->file_id, $internal_revision);
$file_delete_event = new FileVersionDeleteEvent($file_version_id, $folder_id, $this->file_version->get_size());
$event_handler = new EventHandler($file_delete_event);
if ($event_handler->get_success() == false) {
if ($transaction_id != null) {
$transaction->rollback($transaction_id);
}
return 0;
}
$minor_file_array = FileVersion_Access::list_entries_by_previous_version_id($file_version_id);
if (is_array($minor_file_array) and count($minor_file_array) >= 1) {
foreach ($minor_file_array as $key => $value) {
$file = new File($this->file_id);
$file->open_file_version_id($value);
if ($file->delete_version($file->get_internal_revision()) == false) {
if ($transaction_id != null) {
$transaction->rollback($transaction_id);
}
return 0;
}
}
}
if ($this->file_version->get_current() == true) {
$next_current_file_version_id = FileVersion_Access::get_last_uploaded_version_entry_by_toid($this->file_id, $internal_revision);
$file_version_access = new FileVersion_Access($next_current_file_version_id);
$file_version_access->set_current(true);
}
// Minimise Filesize
$folder->decrease_filesize($this->file_version->get_owner_id(), $this->file_version->get_size());
// Datei L�schen
$extension_array = explode(".", $this->file_version->get_name());
$extension_array_length = substr_count($this->file_version->get_name(), ".");
if ($extension_array_length == 0) {
$extension = "";
} else {
$extension = "." . $extension_array[$extension_array_length];
}
$path = constant("BASE_DIR") . "/" . $folder->get_path() . "/" . $this->date_entity_id . "-" . $this->file_version->get_internal_revision() . "" . $extension . "";
if ($this->file_version->delete()) {
if (is_file($path)) {
if (is_writable($path)) {
$delete_success = unlink($path);
if ($delete_success == false) {
if ($transaction_id != null) {
$transaction->rollback($transaction_id);
}
$this->file->set_flag(-1);
// Corrupt
return 0;
}
} else {
if ($transaction_id != null) {
$transaction->rollback($transaction_id);
}
$this->file->set_flag(-1);
// Corrupt
return 0;
}
} else {
if ($transaction_id != null) {
$transaction->rollback($transaction_id);
}
$this->file->set_flag(-1);
// Corrupt
return 0;
}
} else {
if ($transaction_id != null) {
$transaction->rollback($transaction_id);
}
return 0;
}
if ($transaction_id != null) {
$transaction->commit($transaction_id);
}
return 1;
} else {
if ($this->delete()) {
if ($transaction_id != null) {
$transaction->commit($transaction_id);
}
return 2;
} else {
if ($transaction_id != null) {
$transaction->rollback($transaction_id);
}
return 0;
}
}
} else {
return 0;
}
} else {
return 0;
}
}
