Uses of Interface
io.goobi.viewer.controller.mq.MessageHandler

Packages that use MessageHandler

Package	Description
io.goobi.viewer.controller.mq	ActiveMQ-based message queue infrastructure for asynchronous task processing within the Goobi viewer, including broker configuration, queue lifecycle management, message dispatch, and handler registration.
io.goobi.viewer.model.job.mq	Contains ActiveMQ message handlers that process job requests dispatched via the viewer's internal message queue, covering PDF generation, uploads, sitemap updates, and other background tasks.

Uses of MessageHandler in io.goobi.viewer.controller.mq

Constructor parameters in io.goobi.viewer.controller.mq with type arguments of type MessageHandler

Modifier	Constructor	Description
	MessageQueueManager(ActiveMQConfig config, IDAO dao, Map<String,MessageHandler<MessageStatus>> instances)

Uses of MessageHandler in io.goobi.viewer.model.job.mq

Classes in io.goobi.viewer.model.job.mq that implement MessageHandler

Modifier and Type	Class	Description
class	CreateDownloadEpubMessageHandler	Message handler that processes requests to generate EPUB download files for digitized records.
class	CreateDownloadPdfMessageHandler	Message handler that processes requests to generate PDF download files for digitized records.
class	DeleteResourceHandler	Message handler that deletes a file or directory at a given path from the local filesystem.
class	DownloadExternalResourceHandler	Message handler that downloads external resource files (e.g.
class	GeoMapUpdateHandler	Message handler that refreshes geo map feature sets by reloading their Solr-based data and updating the application cache.
class	IndexUsageHandler	Message handler that triggers indexing of usage statistics collected from the database into the Solr search index.
class	NotifySearchUpdateHandler	Message handler that sends e-mail notifications to users whose saved searches have new hits since their last notification.
class	PrerenderPdfMessageHandler	Message handler that pre-renders PDF files for individual pages of a digitized record and stores them on disk for faster subsequent delivery.
class	PullThemeHandler	Message handler that pulls the latest version of the configured viewer theme from its version control repository via a shell command.
class	PurgeExpiredBearerTokensHandler	Message handler that removes all expired bearer tokens from the in-memory token manager.
class	PurgeExpiredDownloadPdfsMessageHandler	Message handler that scans the PDF download folder and deletes all expired, unlocked PDF download files.
class	PurgeExpiredDownloadsHandler	Message handler that removes all expired download access tickets from the database.
class	RefreshArchiveTreeHandler	Message handler that unloads cached archive trees for a set of record identifiers so that they are reloaded from Solr on next access.
class	SearchExcelExportHandler	Message handler stub for asynchronous search result Excel export tasks.
class	UpdateDataRepositoryHandler	Message handler that updates the data repository name mapping for a given record identifier in the Solr index and clears any cached access condition data for that record.
class	UpdateSitemapHandler	Message handler that regenerates the XML sitemap files for the viewer instance at the configured output path.
class	UpdateUploadJobsHandler	Message handler that polls all waiting user upload jobs and updates their status based on the current indexing state in Solr.