project_info:crawling_process
====== Differences ====== This shows you the differences between two versions of the page.
| Both sides previous revision Previous revision Next revision | Previous revision | ||
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project_info:crawling_process [2011/07/28 12:49] benjamin add crawler plugin info |
project_info:crawling_process [2024/09/18 08:31] (current) |
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| === 1. Creating the job queue === | === 1. Creating the job queue === | ||
| - | * According to the Crawling Whitelist (and Blacklist), the start URLs are added to the job queue (Crawler::addJob) (''__onAcceptURL(String url, CrawlerJob job)__'' or ''__onDeclineURL(String url)__'' is called to inform the plugin) | + | * According to the Crawling [[features:white_and_black_list|Whitelist and Blacklist]], the start URLs are added to the job queue (Crawler::addJob) (''__onAcceptURL(String url, CrawlerJob job)__'' or ''__onDeclineURL(String url)__'' is called to inform the plugin) |
| + | * If a job would be accepted, the crawler plugins are asked if they want to blacklist it anyway (''__boolean checkDynamicBlacklist(String url, String sourceUrl, String sourceLinkText)__'' - if at least one of the plugins returns true, the file isn't indexed.) | ||
| * Recursively, all entries are checked: (Crawler::run) | * Recursively, all entries are checked: (Crawler::run) | ||
| * If they are folders (and should be indexed), their content is added to the job queue | * If they are folders (and should be indexed), their content is added to the job queue | ||
| Line 22: | Line 23: | ||
| * Create a new Index entry (IndexWriterManager::createNewIndexEntry) | * Create a new Index entry (IndexWriterManager::createNewIndexEntry) | ||
| * First the document is prepared for indexation (DocumentFactory::createDocument) | * First the document is prepared for indexation (DocumentFactory::createDocument) | ||
| + | * [[features:auxiliary_fields|Auxiliary Fields]] are calculated. | ||
| + | * The [[features:access_rights_management|Crawler Access Controller]] (if available) is asked to retrieve the allowed groups. | ||
| * The MIME-Type is identified.(org.semanticdesktop.aperture.mime.identifier.magic.MagicMimeTypeIdentifier::identify()) | * The MIME-Type is identified.(org.semanticdesktop.aperture.mime.identifier.magic.MagicMimeTypeIdentifier::identify()) | ||
| * All preparators are collected which accept this MIME-Type. | * All preparators are collected which accept this MIME-Type. | ||
| * The preparator with the highest priority is executed. (DocumentFactory::createDocument) | * The preparator with the highest priority is executed. (DocumentFactory::createDocument) | ||
| - | * Before (''onBeforePrepare(RawDocument document, WriteablePreparator preparator)'') and after (''onAfterPrepare(RawDocument document, WriteablePreparator preparator)'') the actual preparation, the plugins are called. | + | * Before (''__onBeforePrepare(RawDocument document, WriteablePreparator preparator)__'') and after (''__onAfterPrepare(RawDocument document, WriteablePreparator preparator)__'') the actual preparation, the plugins are called. |
| * If he fails, then an empty document is returned (DocumentFactory::createSubstituteDocument). | * If he fails, then an empty document is returned (DocumentFactory::createSubstituteDocument). | ||
| * Then it is added to the [[http://lucene.apache.org|Lucene]] [[components:search_index|index]], after notification of the plugins (''__onCreateIndexEntry(Document doc, IndexWriter index)__''). | * Then it is added to the [[http://lucene.apache.org|Lucene]] [[components:search_index|index]], after notification of the plugins (''__onCreateIndexEntry(Document doc, IndexWriter index)__''). | ||
| - | At the en, ''__onFinishCrawling(Crawler)__'' is called. | + | At the end, ''__onFinishCrawling(Crawler)__'' is called. |
project_info/crawling_process.1311850149.txt.gz · Last modified: 2024/09/18 08:31 (external edit)
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