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<?php
/**
* @defgroup oai_ojs
*/
/**
* @file classes/oai/ojs/JournalOAI.inc.php
*
* Copyright (c) 2013-2019 Simon Fraser University
* Copyright (c) 2003-2019 John Willinsky
* Distributed under the GNU GPL v2. For full terms see the file docs/COPYING.
*
* @class JournalOAI
* @ingroup oai_ojs
* @see OAIDAO
*
* @brief OJS-specific OAI interface.
* Designed to support both a site-wide and journal-specific OAI interface
* (based on where the request is directed).
*/
import('lib.pkp.classes.oai.OAI');
import('classes.oai.ojs.OAIDAO');
class JournalOAI extends OAI {
/** @var $site Site associated site object */
var $site;
/** @var $journal Journal associated journal object */
var $journal;
/** @var $journalId int null if no journal */
var $journalId;
/** @var $dao OAIDAO DAO for retrieving OAI records/tokens from database */
var $dao;
/**
* @see OAI#OAI
*/
function JournalOAI($config) {
parent::OAI($config);
$this->site =& Request::getSite();
$this->journal =& Request::getJournal();
$this->journalId = isset($this->journal) ? $this->journal->getId() : null;
$this->dao =& DAORegistry::getDAO('OAIDAO');
$this->dao->setOAI($this);
}
/**
* Return a list of ignorable GET parameters.
* @return array
*/
function getNonPathInfoParams() {
return array('journal', 'page');
}
/**
* Convert article ID to OAI identifier.
* @param $articleId int
* @return string
*/
function articleIdToIdentifier($articleId) {
return 'oai:' . $this->config->repositoryId . ':' . 'article/' . $articleId;
}
/**
* Convert OAI identifier to article ID.
* @param $identifier string
* @return int
*/
function identifierToArticleId($identifier) {
$prefix = 'oai:' . $this->config->repositoryId . ':' . 'article/';
if (strstr($identifier, $prefix)) {
return (int) str_replace($prefix, '', $identifier);
} else {
return false;
}
}
/**
* Get the journal ID and section ID corresponding to a set specifier.
* @return int
*/
function setSpecToSectionId($setSpec, $journalId = null) {
$tmpArray = explode(':', $setSpec);
if (count($tmpArray) == 1) {
list($journalSpec) = $tmpArray;
$journalSpec = urldecode($journalSpec);
$sectionSpec = null;
} else if (count($tmpArray) == 2) {
list($journalSpec, $sectionSpec) = $tmpArray;
$journalSpec = urldecode($journalSpec);
$sectionSpec = urldecode($sectionSpec);
} else {
return array(0, 0);
}
return $this->dao->getSetJournalSectionId($journalSpec, $sectionSpec, $this->journalId);
}
//
// OAI interface functions
//
/**
* @see OAI#repositoryInfo
*/
function &repositoryInfo() {
$info = new OAIRepository();
if (isset($this->journal)) {
$info->repositoryName = $this->journal->getLocalizedTitle();
$info->adminEmail = $this->journal->getSetting('contactEmail');
} else {
$info->repositoryName = $this->site->getLocalizedTitle();
$info->adminEmail = $this->site->getLocalizedContactEmail();
}
$info->sampleIdentifier = $this->articleIdToIdentifier(1);
$info->earliestDatestamp = $this->dao->getEarliestDatestamp(array($this->journalId));
$info->toolkitTitle = 'Open Journal Systems';
$versionDao =& DAORegistry::getDAO('VersionDAO');
$currentVersion =& $versionDao->getCurrentVersion();
$info->toolkitVersion = $currentVersion->getVersionString();
$info->toolkitURL = 'http://pkp.sfu.ca/ojs/';
return $info;
}
/**
* @see OAI#validIdentifier
*/
function validIdentifier($identifier) {
return $this->identifierToArticleId($identifier) !== false;
}
/**
* @see OAI#identifierExists
*/
function identifierExists($identifier) {
$recordExists = false;
$articleId = $this->identifierToArticleId($identifier);
if ($articleId) {
$recordExists = $this->dao->recordExists($articleId, array($this->journalId));
}
return $recordExists;
}
/**
* @see OAI#record
*/
function &record($identifier) {
$articleId = $this->identifierToArticleId($identifier);
if ($articleId) {
$record =& $this->dao->getRecord($articleId, array($this->journalId));
}
if (!isset($record)) {
$record = false;
}
return $record;
}
/**
* @see OAI#records
*/
function &records($metadataPrefix, $from, $until, $set, $offset, $limit, &$total) {
$records = null;
if (!HookRegistry::call('JournalOAI::records', array(&$this, $from, $until, $set, $offset, $limit, $total, &$records))) {
$sectionId = null;
if (isset($set)) {
list($journalId, $sectionId) = $this->setSpecToSectionId($set);
} else {
$journalId = $this->journalId;
}
$records =& $this->dao->getRecords(array($journalId, $sectionId), $from, $until, $set, $offset, $limit, $total);
}
return $records;
}
/**
* @see OAI#identifiers
*/
function &identifiers($metadataPrefix, $from, $until, $set, $offset, $limit, &$total) {
$records = null;
if (!HookRegistry::call('JournalOAI::identifiers', array(&$this, $from, $until, $set, $offset, $limit, $total, &$records))) {
$sectionId = null;
if (isset($set)) {
list($journalId, $sectionId) = $this->setSpecToSectionId($set);
} else {
$journalId = $this->journalId;
}
$records =& $this->dao->getIdentifiers(array($journalId, $sectionId), $from, $until, $set, $offset, $limit, $total);
}
return $records;
}
/**
* @see OAI#sets
*/
function &sets($offset, $limit, &$total) {
$sets = null;
if (!HookRegistry::call('JournalOAI::sets', array(&$this, $offset, $limit, $total, &$sets))) {
$sets =& $this->dao->getJournalSets($this->journalId, $offset, $limit, $total);
}
return $sets;
}
/**
* @see OAI#resumptionToken
*/
function &resumptionToken($tokenId) {
$this->dao->clearTokens();
$token = $this->dao->getToken($tokenId);
if (!isset($token)) {
$token = false;
}
return $token;
}
/**
* @see OAI#saveResumptionToken
*/
function &saveResumptionToken($offset, $params) {
$token = new OAIResumptionToken(null, $offset, $params, time() + $this->config->tokenLifetime);
$this->dao->insertToken($token);
return $token;
}
}
?>