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<?php |
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declare(strict_types=1); |
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/* For licensing terms, see /license.txt */ |
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namespace Chamilo\CoreBundle\Search\Xapian; |
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use Chamilo\CoreBundle\Entity\ResourceLink; |
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use Chamilo\CoreBundle\Entity\ResourceNode; |
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use Chamilo\CoreBundle\Entity\SearchEngineRef; |
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use Chamilo\CoreBundle\Settings\SettingsManager; |
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use Chamilo\CourseBundle\Entity\CLp; |
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use Doctrine\ORM\EntityManagerInterface; |
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/** |
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* Handles Xapian indexing for learning paths (CLp). |
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*/ |
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final class LpXapianIndexer |
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{ |
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public function __construct( |
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private readonly XapianIndexService $xapianIndexService, |
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private readonly EntityManagerInterface $em, |
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private readonly SettingsManager $settingsManager, |
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) { |
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} |
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/** |
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* Index or reindex a learning path. |
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* |
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* @return int|null Xapian document id or null when indexing is skipped |
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*/ |
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public function indexLp(CLp $lp): ?int |
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{ |
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// Global feature toggle (same style as QuestionXapianIndexer) |
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$enabled = (string) $this->settingsManager->getSetting('search.search_enabled', true); |
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if ($enabled !== 'true') { |
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return null; |
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} |
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$resourceNode = $lp->getResourceNode(); |
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if (!$resourceNode instanceof ResourceNode) { |
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// Learning path without a resource node cannot be indexed |
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return null; |
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} |
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// Resolve course and session from resource links |
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[$courseId, $sessionId] = $this->resolveCourseAndSession($resourceNode); |
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$title = (string) $lp->getTitle(); |
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$description = (string) ($lp->getDescription() ?? ''); |
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$content = \trim($title.' '.$description); |
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// Keep field names consistent across indexers |
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$fields = [ |
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'kind' => 'learnpath', |
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'tool' => 'learnpath', |
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'title' => $title, |
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'description' => $description, |
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'content' => $content, |
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'filetype' => 'learnpath', |
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'resource_node_id' => (string) $resourceNode->getId(), |
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'lp_id' => $lp->getIid() !== null ? (string) $lp->getIid() : '', |
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'course_id' => $courseId !== null ? (string) $courseId : '', |
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'session_id' => $sessionId !== null ? (string) $sessionId : '', |
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'full_path' => (string) $lp->getPath(), |
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'xapian_data' => json_encode([ |
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'type' => 'learnpath', |
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'lp_id' => $lp->getIid(), |
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'course_id' => $courseId, |
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'session_id' => $sessionId, |
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]), |
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]; |
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// Terms for filtering |
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$terms = ['Tlearnpath', 'Tlp']; |
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if ($courseId !== null) { |
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$terms[] = 'C'.$courseId; |
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} |
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if ($sessionId !== null) { |
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$terms[] = 'S'.$sessionId; |
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} |
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if ($lp->getIid() !== null) { |
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$terms[] = 'L'.$lp->getIid(); |
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} |
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// Reuse SearchEngineRef per resource node (same pattern as questions) |
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/** @var SearchEngineRef|null $existingRef */ |
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$existingRef = $this->em |
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->getRepository(SearchEngineRef::class) |
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->findOneBy(['resourceNodeId' => $resourceNode->getId()]); |
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$existingDocId = $existingRef?->getSearchDid(); |
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if ($existingDocId !== null) { |
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try { |
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$this->xapianIndexService->deleteDocument($existingDocId); |
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} catch (\Throwable) { |
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// Best-effort delete: ignore errors |
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} |
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} |
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try { |
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$docId = $this->xapianIndexService->indexDocument($fields, $terms); |
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} catch (\Throwable) { |
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return null; |
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} |
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if ($existingRef instanceof SearchEngineRef) { |
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$existingRef->setSearchDid($docId); |
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} else { |
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$existingRef = new SearchEngineRef(); |
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$existingRef->setResourceNodeId((int) $resourceNode->getId()); |
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$existingRef->setSearchDid($docId); |
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$this->em->persist($existingRef); |
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} |
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$this->em->flush(); |
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return $docId; |
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} |
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/** |
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* Delete learning path index (called on entity removal). |
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*/ |
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public function deleteLpIndex(CLp $lp): void |
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{ |
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$resourceNode = $lp->getResourceNode(); |
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if (!$resourceNode instanceof ResourceNode) { |
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return; |
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} |
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/** @var SearchEngineRef|null $ref */ |
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$ref = $this->em |
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->getRepository(SearchEngineRef::class) |
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->findOneBy(['resourceNodeId' => $resourceNode->getId()]); |
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if (!$ref) { |
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return; |
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} |
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try { |
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$this->xapianIndexService->deleteDocument($ref->getSearchDid()); |
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} catch (\Throwable) { |
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// Best-effort delete |
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} |
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$this->em->remove($ref); |
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$this->em->flush(); |
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} |
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/** |
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* Resolve course and session ids from resource links. |
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* |
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* @return array{0:int|null,1:int|null} |
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*/ |
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private function resolveCourseAndSession(ResourceNode $resourceNode): array |
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{ |
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$courseId = null; |
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$sessionId = null; |
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foreach ($resourceNode->getResourceLinks() as $link) { |
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if (!$link instanceof ResourceLink) { |
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continue; |
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} |
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if ($courseId === null && $link->getCourse()) { |
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$courseId = $link->getCourse()->getId(); |
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} |
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if ($sessionId === null && $link->getSession()) { |
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$sessionId = $link->getSession()->getId(); |
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} |
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if ($courseId !== null && $sessionId !== null) { |
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break; |
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} |
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} |
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return [$courseId, $sessionId]; |
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} |
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} |
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chamilo /
chamilo-lms
