/**
* <p>
* Attempts to resolve a reference to an identified object, by the passed
* <tt>$id</tt> from the internal data source's index of objects first. If
* this data source does not contain the object reference, the data source
* will fall back to the populator in an attempt to lookup the object from
* other data sources.
* </p>
*
* @param string $name the name identifying the object to look up.
* @throws \Exception
*/
public function getReference($name)
{
$ref = null;
// ** Look for the object first within this data sources.
if ($this->contains($name)) {
$ref = $this->findObject($name);
if ($ref !== null) {
return $ref;
}
}
// ** Look for the object within other data sources.
$ref = $this->populator->lookup($name);
if ($ref === null) {
$this->getLog()->debug('Unable to find a object by reference: ' . $name . '. Please check your data sources. ' . 'If the object has already been persisted by another populator use the "query" attribute instead of "ref".');
throw new \NullPointerException('Unable to find reference: ' . $name . '. Does this object exist in your included data sources?');
}
return $ref;
}
/**
*
* @param IPopulator $populator
* @param InputInterface $input
* @param OutputInterface $output
*/
private function overrideFiles(IPopulator $populator, InputInterface $input, OutputInterface $output)
{
$option->writeln('Overriding populator files...');
$files = $this->getFilesOverride($input, $output);
if ($files !== null) {
if ($output->getVerbosity() == OutputInterface::VERBOSITY_VERBOSE) {
$option->writeln('Setting populator data source files to: ' . print_r($files));
}
$populator->setFiles($files);
}
}
