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Diffstat (limited to '')
| -rw-r--r-- | toolkit/components/places/nsPlacesTriggers.h | 365 |
1 files changed, 365 insertions, 0 deletions
diff --git a/toolkit/components/places/nsPlacesTriggers.h b/toolkit/components/places/nsPlacesTriggers.h new file mode 100644 index 0000000000..0281054c16 --- /dev/null +++ b/toolkit/components/places/nsPlacesTriggers.h @@ -0,0 +1,365 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- + * vim: sw=2 ts=2 et lcs=trail\:.,tab\:>~ : + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#include "nsPlacesTables.h" + +#ifndef __nsPlacesTriggers_h__ +# define __nsPlacesTriggers_h__ + +/** + * These visit types are excluded from visit_count: + * 0 - invalid + * 4 - EMBED + * 7 - DOWNLOAD + * 8 - FRAMED_LINK + * 9 - RELOAD + **/ +# define VISIT_COUNT_INC(field) \ + "(CASE WHEN " field " IN (0, 4, 7, 8, 9) THEN 0 ELSE 1 END) " + +/** + * This triggers update visit_count and last_visit_date based on historyvisits + * table changes. + */ +# define CREATE_HISTORYVISITS_AFTERINSERT_TRIGGER \ + nsLiteralCString( \ + "CREATE TEMP TRIGGER moz_historyvisits_afterinsert_v2_trigger " \ + "AFTER INSERT ON moz_historyvisits FOR EACH ROW " \ + "BEGIN " \ + "SELECT invalidate_days_of_history();" \ + "SELECT store_last_inserted_id('moz_historyvisits', NEW.id); " \ + "UPDATE moz_places SET " \ + "visit_count = visit_count + " VISIT_COUNT_INC("NEW.visit_type") ", " \ + "recalc_frecency = 1, " \ + "recalc_alt_frecency = 1, " \ + "last_visit_date = MAX(IFNULL(last_visit_date, 0), NEW.visit_date) " \ + "WHERE id = NEW.place_id;" \ + "END") + +# define CREATE_HISTORYVISITS_AFTERDELETE_TRIGGER \ + nsLiteralCString( \ + "CREATE TEMP TRIGGER moz_historyvisits_afterdelete_v2_trigger " \ + "AFTER DELETE ON moz_historyvisits FOR EACH ROW " \ + "BEGIN " \ + "SELECT invalidate_days_of_history();" \ + "UPDATE moz_places SET " \ + "visit_count = visit_count - " VISIT_COUNT_INC("OLD.visit_type") ", " \ + "recalc_frecency = (frecency <> 0), " \ + "recalc_alt_frecency = (frecency <> 0), " \ + "last_visit_date = (SELECT visit_date FROM moz_historyvisits " \ + "WHERE place_id = OLD.place_id " \ + "ORDER BY visit_date DESC LIMIT 1) " \ + "WHERE id = OLD.place_id;" \ + "END") + +// This trigger stores the last_inserted_id, and inserts entries in moz_origins +// when pages are added. +# define CREATE_PLACES_AFTERINSERT_TRIGGER \ + nsLiteralCString( \ + "CREATE TEMP TRIGGER moz_places_afterinsert_trigger " \ + "AFTER INSERT ON moz_places FOR EACH ROW " \ + "BEGIN " \ + "SELECT store_last_inserted_id('moz_places', NEW.id); " \ + "INSERT INTO moz_origins " \ + " (prefix, host, frecency, recalc_frecency, recalc_alt_frecency) " \ + "VALUES (get_prefix(NEW.url), get_host_and_port(NEW.url), " \ + " NEW.frecency, 1, 1) " \ + "ON CONFLICT(prefix, host) DO UPDATE " \ + " SET recalc_frecency = 1, recalc_alt_frecency = 1 " \ + " WHERE EXCLUDED.recalc_frecency = 0 OR " \ + " EXCLUDED.recalc_alt_frecency = 0; " \ + "UPDATE moz_places SET origin_id = ( " \ + " SELECT id " \ + " FROM moz_origins " \ + " WHERE prefix = get_prefix(NEW.url) " \ + " AND host = get_host_and_port(NEW.url) " \ + ") " \ + "WHERE id = NEW.id; " \ + "END") + +// This trigger is a workaround for the lack of FOR EACH STATEMENT in Sqlite. +// While doing deletes into moz_places, we accumulate the affected origins into +// a temp table. Afterwards, we delete everything from the temp table, causing +// the AFTER DELETE trigger to fire for it, which will then update moz_origins. +// +// Note this way we lose atomicity, crashing between the 2 queries may break the +// tables' coherency. So it's better to run those DELETE queries in the same +// transaction as the original change. +# define CREATE_PLACES_AFTERDELETE_TRIGGER \ + nsLiteralCString( \ + "CREATE TEMP TRIGGER moz_places_afterdelete_trigger " \ + "AFTER DELETE ON moz_places FOR EACH ROW " \ + "BEGIN " \ + "INSERT OR IGNORE INTO moz_updateoriginsdelete_temp (prefix, host) " \ + "VALUES (get_prefix(OLD.url), get_host_and_port(OLD.url)); " \ + "UPDATE moz_origins SET recalc_frecency = 1, recalc_alt_frecency = 1 " \ + "WHERE id = OLD.origin_id; " \ + "END ") + +// This is an alternate version of CREATE_PLACES_AFTERDELETE_TRIGGER, with +// support for previews tombstones. Only one of these should be used at the +// same time +# define CREATE_PLACES_AFTERDELETE_WPREVIEWS_TRIGGER \ + nsLiteralCString( \ + "CREATE TEMP TRIGGER moz_places_afterdelete_wpreviews_trigger " \ + "AFTER DELETE ON moz_places FOR EACH ROW " \ + "BEGIN " \ + "INSERT OR IGNORE INTO moz_updateoriginsdelete_temp (prefix, host) " \ + "VALUES (get_prefix(OLD.url), get_host_and_port(OLD.url)); " \ + "UPDATE moz_origins SET recalc_frecency = 1, recalc_alt_frecency = 1 " \ + "WHERE id = OLD.origin_id; " \ + "INSERT OR IGNORE INTO moz_previews_tombstones VALUES " \ + "(md5hex(OLD.url));" \ + "END ") + +// This is the supporting table for the "AFTER DELETE ON moz_places" triggers. +# define CREATE_UPDATEORIGINSDELETE_AFTERDELETE_TRIGGER \ + nsLiteralCString( \ + "CREATE TEMP TRIGGER moz_updateoriginsdelete_afterdelete_trigger " \ + "AFTER DELETE ON moz_updateoriginsdelete_temp FOR EACH ROW " \ + "BEGIN " \ + "DELETE FROM moz_origins " \ + "WHERE prefix = OLD.prefix AND host = OLD.host " \ + "AND NOT EXISTS ( " \ + " SELECT id FROM moz_places " \ + " WHERE origin_id = moz_origins.id " \ + "); " \ + "END") + +// This trigger runs on updates to moz_places.frecency. +// +// However, we skip this when frecency changes are due to frecency decay +// since (1) decay updates all frecencies at once, so this trigger would +// run for each moz_place, which would be expensive; and (2) decay does +// not change the ordering of frecencies since all frecencies decay by +// the same percentage. +# define CREATE_PLACES_AFTERUPDATE_FRECENCY_TRIGGER \ + nsLiteralCString( \ + "CREATE TEMP TRIGGER moz_places_afterupdate_frecency_trigger " \ + "AFTER UPDATE OF frecency ON moz_places FOR EACH ROW " \ + "WHEN NOT is_frecency_decaying() " \ + "BEGIN " \ + "UPDATE moz_places SET recalc_frecency = 0 WHERE id = NEW.id; " \ + "UPDATE moz_origins SET recalc_frecency = 1, recalc_alt_frecency = 1 " \ + "WHERE id = NEW.origin_id; " \ + "END ") + +// Runs when recalc_frecency is set to 1 +# define CREATE_PLACES_AFTERUPDATE_RECALC_FRECENCY_TRIGGER \ + nsLiteralCString( \ + "CREATE TEMP TRIGGER moz_places_afterupdate_recalc_frecency_trigger " \ + "AFTER UPDATE OF recalc_frecency ON moz_places FOR EACH ROW " \ + "WHEN NEW.recalc_frecency = 1 " \ + "BEGIN " \ + " SELECT set_should_start_frecency_recalculation();" \ + "END") +# define CREATE_ORIGINS_AFTERUPDATE_RECALC_FRECENCY_TRIGGER \ + nsLiteralCString( \ + "CREATE TEMP TRIGGER moz_origins_afterupdate_recalc_frecency_trigger " \ + "AFTER UPDATE OF recalc_frecency ON moz_origins FOR EACH ROW " \ + "WHEN NEW.recalc_frecency = 1 " \ + "BEGIN " \ + " SELECT set_should_start_frecency_recalculation();" \ + "END") + +// Runs when origin frecency is set to 0. +// This is in addition to moz_updateoriginsdelete_afterdelete_trigger, as a +// sanity check to ensure orphan origins don't stay around. We cannot just rely +// on this because it runs delayed and in the meanwhile the existence of the +// origin may impact user's privacy. +# define CREATE_ORIGINS_AFTERUPDATE_FRECENCY_TRIGGER \ + nsLiteralCString( \ + "CREATE TEMP TRIGGER moz_origins_afterupdate_frecency_trigger " \ + "AFTER UPDATE OF recalc_frecency ON moz_origins FOR EACH ROW " \ + "WHEN NEW.frecency = 0 AND OLD.frecency > 0 " \ + "BEGIN " \ + "DELETE FROM moz_origins " \ + "WHERE id = NEW.id AND NOT EXISTS ( " \ + " SELECT id FROM moz_places WHERE origin_id = NEW.id " \ + "); " \ + "END") + +/** + * This trigger removes a row from moz_openpages_temp when open_count + * reaches 0. + * + * @note this should be kept up-to-date with the definition in + * nsPlacesAutoComplete.js + */ +# define CREATE_REMOVEOPENPAGE_CLEANUP_TRIGGER \ + nsLiteralCString( \ + "CREATE TEMPORARY TRIGGER moz_openpages_temp_afterupdate_trigger " \ + "AFTER UPDATE OF open_count ON moz_openpages_temp FOR EACH ROW " \ + "WHEN NEW.open_count = 0 " \ + "BEGIN " \ + "DELETE FROM moz_openpages_temp " \ + "WHERE url = NEW.url " \ + "AND userContextId = NEW.userContextId;" \ + "END") + +/** + * Any bookmark operation should recalculate frecency, apart from place: + * queries. + */ +# define IS_PLACE_QUERY \ + " url_hash BETWEEN hash('place', 'prefix_lo') " \ + " AND hash('place', 'prefix_hi') " + +# define CREATE_BOOKMARKS_FOREIGNCOUNT_AFTERDELETE_TRIGGER \ + nsLiteralCString( \ + "CREATE TEMP TRIGGER moz_bookmarks_foreign_count_afterdelete_trigger " \ + "AFTER DELETE ON moz_bookmarks FOR EACH ROW " \ + "BEGIN " \ + "UPDATE moz_places " \ + "SET foreign_count = foreign_count - 1 " \ + ", recalc_frecency = NOT " IS_PLACE_QUERY \ + ", recalc_alt_frecency = NOT " IS_PLACE_QUERY \ + "WHERE id = OLD.fk;" \ + "END") + +/** + * Currently expiration skips anything with frecency = -1, since that is + * the default value for new page insertions. Unfortunately adding and + * immediately removing a bookmark will generate a page with frecency = + * -1 that would never be expired until visited. As a temporary + * workaround we set frecency to 1 on bookmark addition if it was set to + * -1. This is not elegant, but it will be fixed by Bug 1475582 once + * removing bookmarks will immediately take care of removing orphan + * pages. Note setting frecency resets recalc_frecency, so do it first. + */ +# define CREATE_BOOKMARKS_FOREIGNCOUNT_AFTERINSERT_TRIGGER \ + nsLiteralCString( \ + "CREATE TEMP TRIGGER moz_bookmarks_foreign_count_afterinsert_trigger " \ + "AFTER INSERT ON moz_bookmarks FOR EACH ROW " \ + "BEGIN " \ + "SELECT store_last_inserted_id('moz_bookmarks', NEW.id); " \ + "SELECT note_sync_change() WHERE NEW.syncChangeCounter > 0; " \ + "UPDATE moz_places " \ + "SET frecency = (CASE WHEN " IS_PLACE_QUERY \ + " THEN 0 ELSE 1 END) " \ + "WHERE frecency = -1 AND id = NEW.fk;" \ + "UPDATE moz_places " \ + "SET foreign_count = foreign_count + 1 " \ + ", hidden = " IS_PLACE_QUERY \ + ", recalc_frecency = NOT " IS_PLACE_QUERY \ + ", recalc_alt_frecency = NOT " IS_PLACE_QUERY \ + "WHERE id = NEW.fk;" \ + "END") + +# define CREATE_BOOKMARKS_FOREIGNCOUNT_AFTERUPDATE_TRIGGER \ + nsLiteralCString( \ + "CREATE TEMP TRIGGER moz_bookmarks_foreign_count_afterupdate_trigger " \ + "AFTER UPDATE OF fk, syncChangeCounter ON moz_bookmarks FOR EACH ROW " \ + "BEGIN " \ + "SELECT note_sync_change() " \ + "WHERE NEW.syncChangeCounter <> OLD.syncChangeCounter; " \ + "UPDATE moz_places " \ + "SET foreign_count = foreign_count + 1 " \ + ", hidden = " IS_PLACE_QUERY \ + ", recalc_frecency = NOT " IS_PLACE_QUERY \ + ", recalc_alt_frecency = NOT " IS_PLACE_QUERY \ + "WHERE OLD.fk <> NEW.fk AND id = NEW.fk;" \ + "UPDATE moz_places " \ + "SET foreign_count = foreign_count - 1 " \ + ", recalc_frecency = NOT " IS_PLACE_QUERY \ + ", recalc_alt_frecency = NOT " IS_PLACE_QUERY \ + "WHERE OLD.fk <> NEW.fk AND id = OLD.fk;" \ + "END") + +# define CREATE_KEYWORDS_FOREIGNCOUNT_AFTERDELETE_TRIGGER \ + nsLiteralCString( \ + "CREATE TEMP TRIGGER moz_keywords_foreign_count_afterdelete_trigger " \ + "AFTER DELETE ON moz_keywords FOR EACH ROW " \ + "BEGIN " \ + "UPDATE moz_places " \ + "SET foreign_count = foreign_count - 1 " \ + "WHERE id = OLD.place_id;" \ + "END") + +# define CREATE_KEYWORDS_FOREIGNCOUNT_AFTERINSERT_TRIGGER \ + nsLiteralCString( \ + "CREATE TEMP TRIGGER moz_keywords_foreign_count_afterinsert_trigger " \ + "AFTER INSERT ON moz_keywords FOR EACH ROW " \ + "BEGIN " \ + "UPDATE moz_places " \ + "SET foreign_count = foreign_count + 1 " \ + "WHERE id = NEW.place_id;" \ + "END") + +# define CREATE_KEYWORDS_FOREIGNCOUNT_AFTERUPDATE_TRIGGER \ + nsLiteralCString( \ + "CREATE TEMP TRIGGER moz_keywords_foreign_count_afterupdate_trigger " \ + "AFTER UPDATE OF place_id ON moz_keywords FOR EACH ROW " \ + "BEGIN " \ + "UPDATE moz_places " \ + "SET foreign_count = foreign_count + 1 " \ + "WHERE id = NEW.place_id; " \ + "UPDATE moz_places " \ + "SET foreign_count = foreign_count - 1 " \ + "WHERE id = OLD.place_id; " \ + "END") + +# define CREATE_ICONS_AFTERINSERT_TRIGGER \ + nsLiteralCString( \ + "CREATE TEMP TRIGGER moz_icons_afterinsert_v1_trigger " \ + "AFTER INSERT ON moz_icons FOR EACH ROW " \ + "BEGIN " \ + "SELECT store_last_inserted_id('moz_icons', NEW.id); " \ + "END") + +# define CREATE_BOOKMARKS_DELETED_AFTERINSERT_TRIGGER \ + nsLiteralCString( \ + "CREATE TEMP TRIGGER moz_bookmarks_deleted_afterinsert_v1_trigger " \ + "AFTER INSERT ON moz_bookmarks_deleted FOR EACH ROW " \ + "BEGIN " \ + "SELECT note_sync_change(); " \ + "END") + +# define CREATE_BOOKMARKS_DELETED_AFTERDELETE_TRIGGER \ + nsLiteralCString( \ + "CREATE TEMP TRIGGER moz_bookmarks_deleted_afterdelete_v1_trigger " \ + "AFTER DELETE ON moz_bookmarks_deleted FOR EACH ROW " \ + "BEGIN " \ + "SELECT note_sync_change(); " \ + "END") + +// This trigger removes orphan search terms when interactions are +// removed from the metadata table. +# define CREATE_PLACES_METADATA_AFTERDELETE_TRIGGER \ + nsLiteralCString( \ + "CREATE TEMP TRIGGER moz_places_metadata_afterdelete_trigger " \ + "AFTER DELETE ON moz_places_metadata " \ + "FOR EACH ROW " \ + "BEGIN " \ + "DELETE FROM moz_places_metadata_search_queries " \ + "WHERE id = OLD.search_query_id AND NOT EXISTS (" \ + "SELECT id FROM moz_places_metadata " \ + "WHERE search_query_id = OLD.search_query_id " \ + "); " \ + "END") + +// since moz_places_extra is really just storing json, there could be a +// scenario where we have a valid row but empty json -- we should make sure +// we have triggers to remove any such rows +# define CREATE_MOZ_PLACES_EXTRA_AFTERUPDATE_TRIGGER \ + nsLiteralCString( \ + "CREATE TEMP TRIGGER moz_places_extra_trigger " \ + "AFTER UPDATE ON moz_places_extra FOR EACH ROW " \ + "WHEN (NEW.sync_json = '' OR NEW.sync_json = '{}')" \ + "BEGIN " \ + "DELETE FROM moz_places_extra WHERE place_id = NEW.place_id;" \ + "END") + +# define CREATE_MOZ_HISTORYVISITS_AFTERUPDATE_TRIGGER \ + nsLiteralCString( \ + "CREATE TEMP TRIGGER moz_historyvisits_extra_trigger " \ + "AFTER UPDATE ON moz_historyvisits_extra FOR EACH ROW " \ + "WHEN (NEW.sync_json = '' OR NEW.sync_json = '{}')" \ + "BEGIN " \ + "DELETE FROM moz_historyvisits_extra WHERE visit_id = NEW.visit_id;" \ + "END") + +#endif // __nsPlacesTriggers_h__ |