/**
* @param ModelMetadata $metadata The object metadata, where to find the object's
* source configuration.
* @param string|null $sourceIdent Optional. Custom source ident to load.
* If NULL, the default (from metadata) will be used.
* @throws Exception If the source is not defined in the model's metadata.
* @return SourceInterface
*/
private function createSource(ModelMetadata $metadata, $sourceIdent = null)
{
if ($sourceIdent === null) {
$sourceIdent = $metadata->defaultSource();
}
$sourceConfig = $metadata->source($sourceIdent);
if (!$sourceConfig) {
throw new Exception(sprintf('Can not create %s source: "%s" is not defined in metadata.', get_class($this), $sourceIdent));
}
$sourceType = isset($sourceConfig['type']) ? $sourceConfig['type'] : self::DEFAULT_SOURCE_TYPE;
$source = $this->sourceFactory->create($sourceType);
$source->setData($sourceConfig);
return $source;
}
