3 namespace Drupal\search\Plugin;
6 * Defines an optional interface for SearchPlugin objects using an index.
8 * Plugins implementing this interface will have these methods invoked during
9 * search_cron() and via the search module administration form. Plugins not
10 * implementing this interface are assumed to be using their own methods for
11 * searching, not involving separate index tables.
13 * The user interface for managing search pages displays the indexing status for
14 * search pages implementing this interface. It also allows users to configure
15 * default settings for indexing, and refers to the "default search index". If
16 * your search page plugin uses its own indexing mechanism instead of the
17 * default search index, or overrides the default indexing settings, you should
18 * make this clear on the settings page or other documentation for your plugin.
20 * Multiple search pages can be created for each search plugin, so you will need
21 * to choose whether these search pages should share an index (in which case
22 * they must not use any search page-specific configuration while indexing) or
23 * they will have separate indexes (which will use additional server resources).
25 interface SearchIndexingInterface {
28 * Updates the search index for this plugin.
30 * This method is called every cron run if the plugin has been set as
31 * an active search module on the Search settings page
32 * (admin/config/search/pages). It allows your module to add items to the
33 * built-in search index using search_index(), or to add them to your module's
34 * own indexing mechanism.
36 * When implementing this method, your module should index content items that
37 * were modified or added since the last run. There is a time limit for cron,
38 * so it is advisable to limit how many items you index per run using
39 * config('search.settings')->get('index.cron_limit') or with your own
40 * setting. And since the cron run could time out and abort in the middle of
41 * your run, you should update any needed internal bookkeeping on when items
42 * have last been indexed as you go rather than waiting to the end of
45 public function updateIndex();
48 * Clears the search index for this plugin.
50 * When a request is made to clear all items from the search index related to
51 * this plugin, this method will be called. If this plugin uses the default
52 * search index, this method can call search_index_clear($type) to remove
53 * indexed items from the search database.
55 * @see search_index_clear()
57 public function indexClear();
60 * Marks the search index for reindexing for this plugin.
62 * When a request is made to mark all items from the search index related to
63 * this plugin for reindexing, this method will be called. If this plugin uses
64 * the default search index, this method can call
65 * search_mark_for_reindex($type) to mark the items in the search database for
68 * @see search_mark_for_reindex()
70 public function markForReindex();
73 * Reports the status of indexing.
75 * The core search module only invokes this method on active module plugins.
76 * Implementing modules do not need to check whether they are active when
77 * calculating their return values.
80 * An associative array with the key-value pairs:
81 * - remaining: The number of items left to index.
82 * - total: The total number of items to index.
84 public function indexStatus();