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Bug #46000 » RootlineUtility.php

Andreas Lingott, 2013-03-04 09:16

 
<?php
namespace TYPO3\CMS\Core\Utility;

/***************************************************************
* Copyright notice
*
* (c) 2012 Steffen Ritter <steffen.ritter@typo3.org>
* All rights reserved
*
* This script is part of the TYPO3 project. The TYPO3 project is
* free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* The GNU General Public License can be found at
* http://www.gnu.org/copyleft/gpl.html.
*
* This script is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* This copyright notice MUST APPEAR in all copies of the script!
***************************************************************/
/**
* A utility resolving and Caching the Rootline generation
*
* @author Steffen Ritter <steffen.ritter@typo3.org>
*/
class RootlineUtility {

/**
* @var integer
*/
protected $pageUid;

/**
* @var string
*/
protected $mountPointParameter;

/**
* @var array
*/
protected $parsedMountPointParameters = array();

/**
* @var integer
*/
protected $languageUid = 0;

/**
* @var integer
*/
protected $workspaceUid = 0;

/**
* @var boolean
*/
protected $versionPreview = FALSE;

/**
* @var \TYPO3\CMS\Core\Cache\Frontend\FrontendInterface
*/
static protected $cache = NULL;

/**
* @var array
*/
static protected $localCache = array();

/**
* Fields to fetch when populating rootline data
*
* @var array
*/
static protected $rootlineFields = array(
'pid',
'uid',
't3ver_oid',
't3ver_wsid',
't3ver_state',
'title',
'alias',
'nav_title',
'media',
'layout',
'hidden',
'starttime',
'endtime',
'fe_group',
'extendToSubpages',
'doktype',
'TSconfig',
'storage_pid',
'is_siteroot',
'mount_pid',
'mount_pid_ol',
'fe_login_mode',
'backend_layout_next_level'
);

/**
* Rootline Context
*
* @var \TYPO3\CMS\Frontend\Page\PageRepository
*/
protected $pageContext;

/**
* @var array
*/
static protected $pageRecordCache = array();

/**
* @var \TYPO3\CMS\Core\Database\DatabaseConnection
*/
protected $databaseConnection;

/**
* @param int $uid
* @param string $mountPointParameter
* @param \TYPO3\CMS\Frontend\Page\PageRepository $context
* @throws \RuntimeException
*/
public function __construct($uid, $mountPointParameter = '', \TYPO3\CMS\Frontend\Page\PageRepository $context = NULL) {
$this->pageUid = intval($uid);
$this->mountPointParameter = trim($mountPointParameter);
if ($context === NULL) {
if (isset($GLOBALS['TSFE']) && is_object($GLOBALS['TSFE']) && is_object($GLOBALS['TSFE']->sys_page)) {
$this->pageContext = $GLOBALS['TSFE']->sys_page;
} else {
$this->pageContext = \TYPO3\CMS\Core\Utility\GeneralUtility::makeInstance('TYPO3\\CMS\\Frontend\\Page\\PageRepository');
}
} else {
$this->pageContext = $context;
}
$this->initializeObject();
}

/**
* Initialize a state to work with
*
* @throws \RuntimeException
* @return void
*/
protected function initializeObject() {
$this->languageUid = intval($this->pageContext->sys_language_uid);
$this->workspaceUid = intval($this->pageContext->versioningWorkspaceId);
$this->versionPreview = $this->pageContext->versioningPreview;
if ($this->mountPointParameter !== '') {
if (!$GLOBALS['TYPO3_CONF_VARS']['FE']['enable_mount_pids']) {
throw new \RuntimeException('Mount-Point Pages are disabled for this installation. Cannot resolve a Rootline for a page with Mount-Points', 1343462896);
} else {
$this->parseMountPointParameter();
}
}
if (self::$cache === NULL) {
self::$cache = $GLOBALS['typo3CacheManager']->getCache('cache_rootline');
}
self::$rootlineFields = array_merge(self::$rootlineFields, \TYPO3\CMS\Core\Utility\GeneralUtility::trimExplode(',', $GLOBALS['TYPO3_CONF_VARS']['FE']['addRootLineFields'], TRUE));
array_unique(self::$rootlineFields);
$this->databaseConnection = $GLOBALS['TYPO3_DB'];
}

/**
* Constructs the cache Identifier
*
* @param integer $otherUid
* @return string
*/
public function getCacheIdentifier($otherUid = NULL) {
return implode('_', array(
$otherUid !== NULL ? intval($otherUid) : $this->pageUid,
$this->mountPointParameter,
$this->languageUid,
$this->workspaceUid,
$this->versionPreview ? 1 : 0
));
}

/**
* Returns the actual rootline
*
* @return array
*/
public function get() {
$cacheIdentifier = $this->getCacheIdentifier();
if (!isset(self::$localCache[$cacheIdentifier])) {
if (!self::$cache->has($cacheIdentifier)) {
$this->generateRootlineCache();
} else {
self::$localCache[$cacheIdentifier] = self::$cache->get($cacheIdentifier);
}
}
return self::$localCache[$cacheIdentifier];
}

/**
* Queries the database for the page record and returns it.
*
* @param integer $uid Page id
* @throws \RuntimeException
* @return array
*/
protected function getRecordArray($uid) {
if (!isset(self::$pageRecordCache[$this->getCacheIdentifier($uid)])) {
if (!is_array($GLOBALS['TCA']['pages']['columns'])) {
if (isset($GLOBALS['TSFE'])) {
$GLOBALS['TSFE']->includeTCA($GLOBALS['TSFE']->TCAloaded);
}
\TYPO3\CMS\Core\Utility\GeneralUtility::loadTCA('pages');
}
$row = $this->databaseConnection->exec_SELECTgetSingleRow(implode(',', self::$rootlineFields), 'pages', 'uid = ' . intval($uid) . ' AND pages.deleted = 0 AND pages.doktype <> ' . \TYPO3\CMS\Frontend\Page\PageRepository::DOKTYPE_RECYCLER);
if (empty($row)) {
throw new \RuntimeException('Could not fetch page data for uid ' . $uid . '.', 1343589451);
}
$this->pageContext->versionOL('pages', $row, FALSE, TRUE);
$this->pageContext->fixVersioningPid('pages', $row);
if (is_array($row)) {
if ($this->languageUid > 0) {
$row = $this->pageContext->getPageOverlay($row, $this->languageUid);
}
$row = $this->enrichWithRelationFields(isset($row['_PAGES_OVERLAY_UID']) ? $row['_PAGES_OVERLAY_UID'] : $uid, $row);
self::$pageRecordCache[$this->getCacheIdentifier($uid)] = $row;
}
}
if (!is_array(self::$pageRecordCache[$this->getCacheIdentifier($uid)])) {
throw new \RuntimeException('Broken rootline. Could not resolve page with uid ' . $uid . '.', 1343464101);
}
return self::$pageRecordCache[$this->getCacheIdentifier($uid)];
}

/**
* Resolve relations as defined in TCA and add them to the provided $pageRecord array.
*
* @param integer $uid Page id
* @param array $pageRecord Array with page data to add relation data to.
* @throws \RuntimeException
* @return array $pageRecord with additional relations
*/
protected function enrichWithRelationFields($uid, array $pageRecord) {
foreach ($GLOBALS['TCA']['pages']['columns'] as $column => $configuration) {
if ($this->columnHasRelationToResolve($configuration)) {
$configuration = $configuration['config'];
if ($configuration['MM']) {
/** @var $loadDBGroup \TYPO3\CMS\Core\Database\RelationHandler */
$loadDBGroup = \TYPO3\CMS\Core\Utility\GeneralUtility::makeInstance('TYPO3\\CMS\\Core\\Database\\RelationHandler');
$loadDBGroup->start($pageRecord[$column], $configuration['foreign_table'], $configuration['MM'], $uid, 'pages', $configuration);
$relatedUids = $loadDBGroup->tableArray[$configuration['foreign_table']];
} else {
$table = $configuration['foreign_table'];
$field = $configuration['foreign_field'];
$whereClauseParts = array($field . ' = ' . intval($uid));
if (isset($configuration['foreign_match_fields']) && is_array($configuration['foreign_match_fields'])) {
foreach ($configuration['foreign_match_fields'] as $field => $value) {
$whereClauseParts[] = $field . ' = ' . $this->databaseConnection->fullQuoteStr($value, $table);
}
}
if (isset($configuration['foreign_table_field'])) {
if (intval($this->languageUid) > 0) {
$whereClauseParts[] = trim($configuration['foreign_table_field']) . ' = \'pages_language_overlay\'';
} else {
$whereClauseParts[] = trim($configuration['foreign_table_field']) . ' = \'pages\'';
}
}
$whereClause = implode(' AND ', $whereClauseParts);
$whereClause .= $this->pageContext->deleteClause($table);
$rows = $this->databaseConnection->exec_SELECTgetRows('uid', $table, $whereClause);
if (!is_array($rows)) {
throw new \RuntimeException('Could to resolve related records for page ' . $uid . ' and foreign_table ' . htmlspecialchars($configuration['foreign_table']), 1343589452);
}
$relatedUids = array();
foreach ($rows as $row) {
$relatedUids[] = $row['uid'];
}
}
$pageRecord[$column] = implode(',', $relatedUids);
}
}
return $pageRecord;
}

/**
* Checks whether the TCA Configuration array of a column
* describes a relation which is not stored as CSV in the record
*
* @param array $configuration TCA configuration to check
* @return boolean TRUE, if it describes a non-CSV relation
*/
protected function columnHasRelationToResolve(array $configuration) {
$configuration = $configuration['config'];
if (!empty($configuration['MM']) && !empty($configuration['type']) && in_array($configuration['type'], array('select', 'inline', 'group'))) {
return TRUE;
}
if (!empty($configuration['foreign_field']) && !empty($configuration['type']) && in_array($configuration['type'], array('select', 'inline'))) {
return TRUE;
}
return FALSE;
}

/**
* Actual function to generate the rootline and cache it
*
* @throws \RuntimeException
* @return void
*/
protected function generateRootlineCache() {
$page = $this->getRecordArray($this->pageUid);
// If the current page is a mounted (according to the MP parameter) handle the mount-point
if ($this->isMountedPage()) {
$mountPoint = $this->getRecordArray($this->parsedMountPointParameters[$this->pageUid]);
$page = $this->processMountedPage($page, $mountPoint);
$parentUid = $mountPoint['pid'];
// Anyhow after reaching the mount-point, we have to go up that rootline
unset($this->parsedMountPointParameters[$this->pageUid]);
} else {
$parentUid = $page['pid'];
}
$cacheTags = array('pageId_' . $page['uid']);
if ($parentUid > 0) {
// Get rootline of (and including) parent page
$mountPointParameter = count($this->parsedMountPointParameters) > 0 ? $this->mountPointParameter : '';
/** @var $rootline \TYPO3\CMS\Core\Utility\RootlineUtility */
$rootline = \TYPO3\CMS\Core\Utility\GeneralUtility::makeInstance('TYPO3\\CMS\\Core\\Utility\\RootlineUtility', $parentUid, $mountPointParameter, $this->pageContext);
$rootline = $rootline->get();
// retrieve cache tags of parent rootline
foreach ($rootline as $entry) {
$cacheTags[] = 'pageId_' . $entry['uid'];
if ($entry['uid'] == $this->pageUid) {
throw new \RuntimeException('Circular connection in rootline for page with uid ' . $this->pageUid . ' found. Check your mountpoint configuration.', 1343464103);
}
}
} else {
$rootline = array();
}
array_push($rootline, $page);
krsort($rootline);
self::$cache->set($this->getCacheIdentifier(), $rootline, $cacheTags);
self::$localCache[$this->getCacheIdentifier()] = $rootline;
}

/**
* Checks whether the current Page is a Mounted Page
* (according to the MP-URL-Parameter)
*
* @return boolean
*/
public function isMountedPage() {
return in_array($this->pageUid, array_keys($this->parsedMountPointParameters));
}

/**
* Enhances with mount point information or replaces the node if needed
*
* @param array $mountedPageData page record array of mounted page
* @param array $mountPointPageData page record array of mount point page
* @throws \RuntimeException
* @return array
*/
protected function processMountedPage(array $mountedPageData, array $mountPointPageData) {
if ($mountPointPageData['mount_pid'] != $mountedPageData['uid']) {
throw new \RuntimeException('Broken rootline. Mountpoint parameter does not match the actual rootline. mount_pid (' . $mountPointPageData['mount_pid'] . ') does not match page uid (' . $mountedPageData['uid'] . ').', 1343464100);
}
// Current page replaces the original mount-page
if ($mountPointPageData['mount_pid_ol']) {
$mountedPageData['_MOUNT_OL'] = TRUE;
$mountedPageData['_MOUNT_PAGE'] = array(
'uid' => $mountPointPageData['uid'],
'pid' => $mountPointPageData['pid'],
'title' => $mountPointPageData['title']
);
} else {
// The mount-page is not replaced, the mount-page itself has to be used
$mountedPageData = $mountPointPageData;
}
$mountedPageData['_MOUNTED_FROM'] = $this->pageUid;
$mountedPageData['_MP_PARAM'] = $this->pageUid . '-' . $mountPointPageData['uid'];
return $mountedPageData;
}

/**
* Parse the MountPoint Parameters
* Splits the MP-Param via "," for several nested mountpoints
* and afterwords registers the mountpoint configurations
*
* @return void
*/
protected function parseMountPointParameter() {
$mountPoints = \TYPO3\CMS\Core\Utility\GeneralUtility::trimExplode(',', $this->mountPointParameter);
foreach ($mountPoints as $mP) {
list($mountedPageUid, $mountPageUid) = \TYPO3\CMS\Core\Utility\GeneralUtility::intExplode('-', $mP);
$this->parsedMountPointParameters[$mountedPageUid] = $mountPageUid;
}
}

}


?>
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