Add m-esr52 at 52.6.0

1 files changed, 267 insertions, 0 deletions

diff --git a/toolkit/components/places/nsPlacesTriggers.h b/toolkit/components/places/nsPlacesTriggers.h
new file mode 100644
index 000000000..d5b45ff5e
--- /dev/null
+++ b/toolkit/components/places/nsPlacesTriggers.h
@@ -0,0 +1,267 @@
+/* -*- 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__
+
+/**
+ * Exclude these visit types:
+ *  0 - invalid
+ *  4 - EMBED
+ *  7 - DOWNLOAD
+ *  8 - FRAMED_LINK
+ *  9 - RELOAD
+ **/
+#define EXCLUDED_VISIT_TYPES "0, 4, 7, 8, 9"
+
+/**
+ * This triggers update visit_count and last_visit_date based on historyvisits
+ * table changes.
+ */
+#define CREATE_HISTORYVISITS_AFTERINSERT_TRIGGER NS_LITERAL_CSTRING( \
+  "CREATE TEMP TRIGGER moz_historyvisits_afterinsert_v2_trigger " \
+  "AFTER INSERT ON moz_historyvisits FOR EACH ROW " \
+  "BEGIN " \
+    "SELECT store_last_inserted_id('moz_historyvisits', NEW.id); " \
+    "UPDATE moz_places SET " \
+      "visit_count = visit_count + (SELECT NEW.visit_type NOT IN (" EXCLUDED_VISIT_TYPES ")), "\
+      "last_visit_date = MAX(IFNULL(last_visit_date, 0), NEW.visit_date) " \
+    "WHERE id = NEW.place_id;" \
+  "END" \
+)
+
+#define CREATE_HISTORYVISITS_AFTERDELETE_TRIGGER NS_LITERAL_CSTRING( \
+  "CREATE TEMP TRIGGER moz_historyvisits_afterdelete_v2_trigger " \
+  "AFTER DELETE ON moz_historyvisits FOR EACH ROW " \
+  "BEGIN " \
+    "UPDATE moz_places SET " \
+      "visit_count = visit_count - (SELECT OLD.visit_type NOT IN (" EXCLUDED_VISIT_TYPES ")), "\
+      "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" \
+)
+
+/**
+ * A predicate matching pages on rev_host, based on a given host value.
+ * 'host' may be either the moz_hosts.host column or an alias representing an
+ * equivalent value.
+ */
+#define HOST_TO_REVHOST_PREDICATE \
+  "rev_host = get_unreversed_host(host || '.') || '.' " \
+  "OR rev_host = get_unreversed_host(host || '.') || '.www.'"
+
+/**
+ * Select the best prefix for a host, based on existing pages registered for it.
+ * Prefixes have a priority, from the top to the bottom, so that secure pages
+ * have higher priority, and more generically "www." prefixed hosts come before
+ * unprefixed ones.
+ * Given a host, examine associated pages and:
+ *  - if all of the typed pages start with https://www. return https://www.
+ *  - if all of the typed pages start with https:// return https://
+ *  - if all of the typed pages start with ftp: return ftp://
+ *  - if all of the typed pages start with www. return www.
+ *  - otherwise don't use any prefix
+ */
+#define HOSTS_PREFIX_PRIORITY_FRAGMENT \
+  "SELECT CASE " \
+    "WHEN 1 = ( " \
+      "SELECT min(substr(url,1,12) = 'https://www.') FROM moz_places h " \
+      "WHERE (" HOST_TO_REVHOST_PREDICATE ") AND +h.typed = 1 " \
+    ") THEN 'https://www.' " \
+    "WHEN 1 = ( " \
+      "SELECT min(substr(url,1,8) = 'https://') FROM moz_places h " \
+      "WHERE (" HOST_TO_REVHOST_PREDICATE ") AND +h.typed = 1 " \
+    ") THEN 'https://' " \
+    "WHEN 1 = ( " \
+      "SELECT min(substr(url,1,4) = 'ftp:') FROM moz_places h " \
+      "WHERE (" HOST_TO_REVHOST_PREDICATE ") AND +h.typed = 1 " \
+    ") THEN 'ftp://' " \
+    "WHEN 1 = ( " \
+      "SELECT min(substr(url,1,11) = 'http://www.') FROM moz_places h " \
+      "WHERE (" HOST_TO_REVHOST_PREDICATE ") AND +h.typed = 1 " \
+    ") THEN 'www.' " \
+  "END "
+
+/**
+ * These triggers update the hostnames table whenever moz_places changes.
+ */
+#define CREATE_PLACES_AFTERINSERT_TRIGGER NS_LITERAL_CSTRING( \
+  "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 OR REPLACE INTO moz_hosts (id, host, frecency, typed, prefix) " \
+    "SELECT " \
+        "(SELECT id FROM moz_hosts WHERE host = fixup_url(get_unreversed_host(NEW.rev_host))), " \
+        "fixup_url(get_unreversed_host(NEW.rev_host)), " \
+        "MAX(IFNULL((SELECT frecency FROM moz_hosts WHERE host = fixup_url(get_unreversed_host(NEW.rev_host))), -1), NEW.frecency), " \
+        "MAX(IFNULL((SELECT typed FROM moz_hosts WHERE host = fixup_url(get_unreversed_host(NEW.rev_host))), 0), NEW.typed), " \
+        "(" HOSTS_PREFIX_PRIORITY_FRAGMENT \
+         "FROM ( " \
+            "SELECT fixup_url(get_unreversed_host(NEW.rev_host)) AS host " \
+          ") AS match " \
+        ") " \
+    " WHERE LENGTH(NEW.rev_host) > 1; " \
+  "END" \
+)
+
+// This is a hack to workaround the lack of FOR EACH STATEMENT in Sqlite, until
+// bug 871908 can be fixed properly.
+// We store the modified hosts in a temp table, and after every DELETE FROM
+// moz_places, we issue a DELETE FROM moz_updatehosts_temp.  The AFTER DELETE
+// trigger will then take care of updating the moz_hosts table.
+// Note this way we lose atomicity, crashing between the 2 queries may break the
+// hosts table coherency. So it's better to run those DELETE queries in a single
+// transaction.
+// Regardless, this is still better than hanging the browser for several minutes
+// on a fast machine.
+#define CREATE_PLACES_AFTERDELETE_TRIGGER NS_LITERAL_CSTRING( \
+  "CREATE TEMP TRIGGER moz_places_afterdelete_trigger " \
+  "AFTER DELETE ON moz_places FOR EACH ROW " \
+  "BEGIN " \
+    "INSERT OR IGNORE INTO moz_updatehosts_temp (host)" \
+    "VALUES (fixup_url(get_unreversed_host(OLD.rev_host)));" \
+  "END" \
+)
+
+#define CREATE_UPDATEHOSTS_AFTERDELETE_TRIGGER NS_LITERAL_CSTRING( \
+  "CREATE TEMP TRIGGER moz_updatehosts_afterdelete_trigger " \
+  "AFTER DELETE ON moz_updatehosts_temp FOR EACH ROW " \
+  "BEGIN " \
+    "DELETE FROM moz_hosts " \
+    "WHERE host = OLD.host " \
+      "AND NOT EXISTS(" \
+        "SELECT 1 FROM moz_places " \
+          "WHERE rev_host = get_unreversed_host(host || '.') || '.' " \
+             "OR rev_host = get_unreversed_host(host || '.') || '.www.' " \
+      "); " \
+    "UPDATE moz_hosts " \
+    "SET prefix = (" HOSTS_PREFIX_PRIORITY_FRAGMENT ") " \
+    "WHERE host = OLD.host; " \
+  "END" \
+)
+
+// For performance reasons the host frecency is updated only when the page
+// frecency changes by a meaningful percentage.  This is because the frecency
+// decay algorithm requires to update all the frecencies at once, causing a
+// too high overhead, while leaving the ordering unchanged.
+#define CREATE_PLACES_AFTERUPDATE_FRECENCY_TRIGGER NS_LITERAL_CSTRING( \
+  "CREATE TEMP TRIGGER moz_places_afterupdate_frecency_trigger " \
+  "AFTER UPDATE OF frecency ON moz_places FOR EACH ROW " \
+  "WHEN NEW.frecency >= 0 " \
+    "AND ABS(" \
+      "IFNULL((NEW.frecency - OLD.frecency) / CAST(NEW.frecency AS REAL), " \
+             "(NEW.frecency - OLD.frecency))" \
+    ") > .05 " \
+  "BEGIN " \
+    "UPDATE moz_hosts " \
+    "SET frecency = (SELECT MAX(frecency) FROM moz_places " \
+                    "WHERE rev_host = get_unreversed_host(host || '.') || '.' " \
+                       "OR rev_host = get_unreversed_host(host || '.') || '.www.') " \
+    "WHERE host = fixup_url(get_unreversed_host(NEW.rev_host)); " \
+  "END" \
+)
+
+#define CREATE_PLACES_AFTERUPDATE_TYPED_TRIGGER NS_LITERAL_CSTRING( \
+  "CREATE TEMP TRIGGER moz_places_afterupdate_typed_trigger " \
+  "AFTER UPDATE OF typed ON moz_places FOR EACH ROW " \
+  "WHEN NEW.typed = 1 " \
+  "BEGIN " \
+    "UPDATE moz_hosts " \
+    "SET typed = 1 " \
+    "WHERE host = fixup_url(get_unreversed_host(NEW.rev_host)); " \
+  "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 NS_LITERAL_CSTRING( \
+  "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" \
+)
+
+#define CREATE_BOOKMARKS_FOREIGNCOUNT_AFTERDELETE_TRIGGER NS_LITERAL_CSTRING( \
+  "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 " \
+    "WHERE id = OLD.fk;" \
+  "END" \
+)
+
+#define CREATE_BOOKMARKS_FOREIGNCOUNT_AFTERINSERT_TRIGGER NS_LITERAL_CSTRING( \
+  "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); " \
+    "UPDATE moz_places " \
+    "SET foreign_count = foreign_count + 1 " \
+    "WHERE id = NEW.fk;" \
+  "END" \
+)
+
+#define CREATE_BOOKMARKS_FOREIGNCOUNT_AFTERUPDATE_TRIGGER NS_LITERAL_CSTRING( \
+  "CREATE TEMP TRIGGER moz_bookmarks_foreign_count_afterupdate_trigger " \
+  "AFTER UPDATE OF fk ON moz_bookmarks FOR EACH ROW " \
+  "BEGIN " \
+    "UPDATE moz_places " \
+    "SET foreign_count = foreign_count + 1 " \
+    "WHERE id = NEW.fk;" \
+    "UPDATE moz_places " \
+    "SET foreign_count = foreign_count - 1 " \
+    "WHERE id = OLD.fk;" \
+  "END" \
+)
+
+#define CREATE_KEYWORDS_FOREIGNCOUNT_AFTERDELETE_TRIGGER NS_LITERAL_CSTRING( \
+  "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 NS_LITERAL_CSTRING( \
+  "CREATE TEMP TRIGGER moz_keyords_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 NS_LITERAL_CSTRING( \
+  "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" \
+)
+
+#endif // __nsPlacesTriggers_h__