/**
* Create an info and digital object tree for multi-page assets
*
* For digital objects that describe a multi-page digital asset (e.g. a
* multi-page tif image), create a derived asset for each page, create a child
* information object and linked child digital object and move the derived
* asset to the appropriate directory for the new (child) info object
*
* NOTE: Requires the Imagemagick library for creating derivative assets
*
* @return QubitDigitalObject this object
*/
public function createCompoundChildren()
{
// Bail out if the imagemagick library is not installed
if (false === self::hasImageMagick()) {
return $this;
}
$pages = $this->explodeMultiPageAsset();
foreach ($pages as $i => $filepath) {
// Create a new information object
$newInfoObject = new QubitInformationObject();
$newInfoObject->parentId = $this->getInformationObject()->id;
$newInfoObject->setTitle($this->getInformationObject()->getTitle() . ' (' . ($i + 1) . ')');
$newInfoObject->save();
// Create and link a new digital object
$newDigiObject = new QubitDigitalObject();
$newDigiObject->parentId = $this->id;
$newDigiObject->setInformationObjectId($newInfoObject->id);
$newDigiObject->save();
// Derive new file path based on newInfoObject
$assetPath = $newDigiObject->getAssetPath();
$createPath = '';
foreach (explode('/', $assetPath) as $d) {
$createPath .= '/' . $d;
if (!is_dir(sfConfig::get('sf_web_dir') . $createPath)) {
mkdir(sfConfig::get('sf_web_dir') . $createPath, 0755);
}
chmod(sfConfig::get('sf_web_dir') . $createPath, 0755);
}
// Derive new name for file based on original file name + newDigitalObject
// id
$filename = basename($filepath);
$newFilepath = sfConfig::get('sf_web_dir') . $assetPath . '/' . $filename;
// Move asset to new name and path
rename($filepath, $newFilepath);
chmod($newFilepath, 0644);
// Save new file information
$newDigiObject->setPath("{$assetPath}/");
$newDigiObject->setName($filename);
$newDigiObject->setByteSize(filesize($newFilepath));
$newDigiObject->usageId = QubitTerm::MASTER_ID;
$newDigiObject->setMimeType(QubitDigitalObject::deriveMimeType($filename));
$newDigiObject->mediaTypeId = $this->mediaTypeId;
$newDigiObject->setPageCount();
$newDigiObject->setSequence($i + 1);
$newDigiObject->save();
// And finally create reference and thumb images for child asssets
$newDigiObject->createRepresentations($newDigiObject->getUsageId(), $connection);
}
return $this;
}