/**
* Validates the version is a LinkedVersion and returns the class name of its migration
*
* @param VersionInterface $version
*
* @return string
*
* @throws InvalidArgumentException
*/
protected final function getMigrationClass(VersionInterface $version)
{
if (!$version instanceof LinkedVersionInterface) {
throw new InvalidArgumentException(sprintf("Expected version %s to be linked to a migration", $version->getId()));
}
return get_class($version->getMigration());
}
/**
* Adds a new version to the collection if it doesn't exist or replaces it if it does.
*
* @param VersionInterface $version
*/
public function addOrReplace(VersionInterface $version)
{
$index = $this->indexOfId($version->getId());
if (null !== $index) {
$this->remove($index);
}
$this->add($version);
}
/**
* The internal compare function. Should return less than zero (0), zero or greater than zero if the first item is
* respectively less than, equal to, or greater than the second item.
*
* @param VersionInterface $version1
* @param VersionInterface $version2
*
* @return mixed
*/
protected function compare(VersionInterface $version1, VersionInterface $version2)
{
return strcmp($version1->getId(), $version2->getId());
}
/**
* @{inheritdoc}
* @param VersionInterface $version
* @return bool|int
* @throws StorageException
*/
public function delete(VersionInterface $version)
{
$result = false;
$stored = $this->fetchAll();
$element = $stored->getById($version->getId());
if ($element) {
$stored->removeElement($element);
$result = $this->saveCollection($stored);
}
return $result;
}