/**
* Perform a search and return record collection.
*
* @param AbstractQuery $query Search query
* @param integer $offset Search offset
* @param integer $limit Search limit
* @param ParamBag $params Search backend parameters
*
*@return \VuFindSearch\Response\RecordCollectionInterface
**/
public function search(AbstractQuery $query, $offset, $limit, ParamBag $params = null)
{
// process EDS API communication tokens.
$authenticationToken = $this->getAuthenticationToken();
$sessionToken = $this->getSessionToken();
$this->debugPrint("Authentication Token: {$authenticationToken}, SessionToken: {$sessionToken}");
// check to see if there is a parameter to only process this call as a setup
if (null !== $params && true == $params->get('setuponly')) {
return false;
}
// create query parameters from VuFind data
$queryString = !empty($query) ? $query->getAllTerms() : '';
$paramsStr = implode('&', null !== $params ? $params->request() : []);
$this->debugPrint("Query: {$queryString}, Limit: {$limit}, Offset: {$offset}, " . "Params: {$paramsStr}");
$baseParams = $this->getQueryBuilder()->build($query);
$paramsStr = implode('&', $baseParams->request());
$this->debugPrint("BaseParams: {$paramsStr} ");
if (null !== $params) {
$baseParams->mergeWith($params);
}
$baseParams->set('resultsPerPage', $limit);
$page = $limit > 0 ? floor($offset / $limit) + 1 : 1;
$baseParams->set('pageNumber', $page);
$searchModel = $this->paramBagToEBSCOSearchModel($baseParams);
$qs = $searchModel->convertToQueryString();
$this->debugPrint("Search Model query string: {$qs}");
try {
$response = $this->client->search($searchModel, $authenticationToken, $sessionToken);
} catch (\EbscoEdsApiException $e) {
// if the auth or session token was invalid, try once more
switch ($e->getApiErrorCode()) {
case 104:
case 108:
case 109:
try {
// For error 104, retry auth token; for 108/9, retry sess token:
if ($e->getApiErrorCode() == 104) {
$authenticationToken = $this->getAuthenticationToken(true);
} else {
$sessionToken = $this->getSessionToken(true);
}
$response = $this->client->search($searchModel, $authenticationToken, $sessionToken);
} catch (Exception $e) {
throw new BackendException($e->getMessage(), $e->getCode(), $e);
}
break;
default:
$response = [];
break;
}
} catch (Exception $e) {
$this->debugPrint("Exception found: " . $e->getMessage());
throw new BackendException($e->getMessage(), $e->getCode(), $e);
}
$collection = $this->createRecordCollection($response);
$this->injectSourceIdentifier($collection);
return $collection;
}
