/**
* This method will query and validates for IMetadataProvider and IQueryProvider implementations, invokes
* BaseService::Initialize to initialize service specific policies.
*
*
* @throws ODataException
*/
protected function createProviders()
{
$metadataProvider = $this->getMetadataProvider();
if (is_null($metadataProvider)) {
throw ODataException::createInternalServerError(Messages::providersWrapperNull());
}
if (!is_object($metadataProvider) || !$metadataProvider instanceof IMetadataProvider) {
throw ODataException::createInternalServerError(Messages::invalidMetadataInstance());
}
$queryProvider = $this->getQueryProvider();
if (is_null($queryProvider)) {
throw ODataException::createInternalServerError(Messages::providersWrapperNull());
}
if (!is_object($queryProvider)) {
throw ODataException::createInternalServerError(Messages::invalidQueryInstance());
}
if (!$queryProvider instanceof IQueryProvider) {
throw ODataException::createInternalServerError(Messages::invalidQueryInstance());
}
$this->config = new ServiceConfiguration($metadataProvider);
$this->providersWrapper = new ProvidersWrapper($metadataProvider, $queryProvider, $this->config);
$this->initialize($this->config);
//TODO: this seems like a bad spot to do this
$this->writerRegistry = new ODataWriterRegistry();
$this->registerWriters();
}
