Package org.olat.search.service.indexer

The indexer package contains all classes to create a new search-index.

See:
Description

Interface Summary

FolderIndexerAccess
Indexer	Common interface for all indexers.

Class Summary

AbstractIndexer	Common abstract indexer.
ContextHelpIndexer	Description: This indexer indexes the context sensitive help system
FolderIndexer	Common folder indexer.
FolderIndexerFullAccess	Description: Dummy implementation with full access
FolderIndexerWorker	Common folder indexer.
FolderIndexerWorkerPool	Pool of folder indexer worker.
ForumIndexer	Common forum indexer.
FullIndexerStatus	Status of full indexer.
Index	Controls the existing index, copy new generated index from temporary directory to search direcotry.
IndexWriterWorker	Used in multi-threaded mode.
MainIndexer	Top class of indexer tree.
OlatFullIndexer	Controls the hole generation of a full-index.

Package org.olat.search.service.indexer Description

The indexer package contains all classes to create a new search-index.

Indexer Structure

The indexer loops over all OLAT data to analyse and generate a new index. The indexer structure is given through the spring config defaultconfig.xml at org.olat.search.service._spring. Each indexer analyse his content and pass tha context to his child elements.
E.g. GroupIndexer goes further to GroupFolderIndexer, GroupForumIndexer, GroupWikiIndexer for each group.

Indexer Single-Thread / Multi-Thread Mode

The indexer can runs in two modes :

Single Thread

Only one thread does the hole work, analyse olat data, read file content and write index-data to index-file.

Multi-Thread

Main thread analyse the olat-data. One or more FolderIndexerWorker read data form file-system. One or more IndexWriter writes index-data to index-file. The