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Bug 449086 - Create temporary tables for frequently used places tables
This changeset creates two temporary tables that will be used when inserting data into moz_places and moz_historyvisits. This will reduce the number of writes as well as the number of fsyncs that happen. r=dietrich
This commit is contained in:
Shawn Wilsher
parent
bbf720ef3a
commit
871b5a0213
@ -878,6 +878,10 @@ nsNavHistory::InitDB(PRInt16 *aMadeChanges)
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// DO NOT PUT ANY SCHEMA-MODIFYING THINGS HERE
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rv = InitTempTables();
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NS_ENSURE_SUCCESS(rv, rv);
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rv = InitViews();
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NS_ENSURE_SUCCESS(rv, rv);
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rv = InitFunctions();
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NS_ENSURE_SUCCESS(rv, rv);
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rv = InitStatements();
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@ -956,6 +960,88 @@ NS_IMETHODIMP mozStorageFunctionGetUnreversedHost::OnFunctionCall(
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return NS_OK;
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}
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nsresult
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nsNavHistory::InitTempTables()
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{
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nsresult rv;
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// moz_places_temp
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rv = mDBConn->ExecuteSimpleSQL(CREATE_MOZ_PLACES_TEMP);
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NS_ENSURE_SUCCESS(rv, rv);
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rv = mDBConn->ExecuteSimpleSQL(NS_LITERAL_CSTRING(
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"CREATE UNIQUE INDEX moz_places_temp_url_uniqueindex ON moz_places_temp (url)"));
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NS_ENSURE_SUCCESS(rv, rv);
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rv = mDBConn->ExecuteSimpleSQL(NS_LITERAL_CSTRING(
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"CREATE INDEX moz_places_temp_faviconindex ON moz_places_temp (favicon_id)"));
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NS_ENSURE_SUCCESS(rv, rv);
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rv = mDBConn->ExecuteSimpleSQL(NS_LITERAL_CSTRING(
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"CREATE INDEX moz_places_temp_hostindex ON moz_places_temp (rev_host)"));
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NS_ENSURE_SUCCESS(rv, rv);
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rv = mDBConn->ExecuteSimpleSQL(NS_LITERAL_CSTRING(
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"CREATE INDEX moz_places_temp_visitcount ON moz_places_temp (visit_count)"));
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NS_ENSURE_SUCCESS(rv, rv);
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rv = mDBConn->ExecuteSimpleSQL(NS_LITERAL_CSTRING(
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"CREATE INDEX moz_places_temp_frecencyindex ON moz_places_temp (frecency)"));
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NS_ENSURE_SUCCESS(rv, rv);
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// moz_historyvisits_temp
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rv = mDBConn->ExecuteSimpleSQL(CREATE_MOZ_HISTORYVISITS_TEMP);
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NS_ENSURE_SUCCESS(rv, rv);
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rv = mDBConn->ExecuteSimpleSQL(NS_LITERAL_CSTRING(
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"CREATE INDEX moz_historyvisits_temp_placedateindex "
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"ON moz_historyvisits_temp (place_id, visit_date)"));
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NS_ENSURE_SUCCESS(rv, rv);
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rv = mDBConn->ExecuteSimpleSQL(NS_LITERAL_CSTRING(
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"CREATE INDEX moz_historyvisits_temp_fromindex "
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"ON moz_historyvisits_temp (from_visit)"));
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NS_ENSURE_SUCCESS(rv, rv);
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rv = mDBConn->ExecuteSimpleSQL(NS_LITERAL_CSTRING(
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"CREATE INDEX moz_historyvisits_temp_dateindex "
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"ON moz_historyvisits_temp (visit_date)"));
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NS_ENSURE_SUCCESS(rv, rv);
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return NS_OK;
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}
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nsresult
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nsNavHistory::InitViews()
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{
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nsresult rv;
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// moz_places_view
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rv = mDBConn->ExecuteSimpleSQL(CREATE_MOZ_PLACES_VIEW);
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NS_ENSURE_SUCCESS(rv, rv);
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rv = mDBConn->ExecuteSimpleSQL(CREATE_PLACES_VIEW_INSERT_TRIGGER);
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NS_ENSURE_SUCCESS(rv, rv);
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rv = mDBConn->ExecuteSimpleSQL(CREATE_PLACES_VIEW_DELETE_TRIGGER);
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NS_ENSURE_SUCCESS(rv, rv);
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rv = mDBConn->ExecuteSimpleSQL(CREATE_PLACES_VIEW_UPDATE_TRIGGER);
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NS_ENSURE_SUCCESS(rv, rv);
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// moz_historyvisits_view
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rv = mDBConn->ExecuteSimpleSQL(CREATE_MOZ_HISTORYVISITS_VIEW);
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NS_ENSURE_SUCCESS(rv, rv);
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rv = mDBConn->ExecuteSimpleSQL(CREATE_HISTORYVISITS_VIEW_INSERT_TRIGGER);
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NS_ENSURE_SUCCESS(rv, rv);
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rv = mDBConn->ExecuteSimpleSQL(CREATE_HISTORYVISITS_VIEW_DELETE_TRIGGER);
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NS_ENSURE_SUCCESS(rv, rv);
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rv = mDBConn->ExecuteSimpleSQL(CREATE_HISTORYVISITS_VIEW_UPDATE_TRIGGER);
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NS_ENSURE_SUCCESS(rv, rv);
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return NS_OK;
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}
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nsresult
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nsNavHistory::InitFunctions()
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{
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@ -463,6 +463,8 @@ protected:
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* The database was migrated to a new version.
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*/
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nsresult InitDB(PRInt16 *aMadeChanges);
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nsresult InitTempTables();
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nsresult InitViews();
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nsresult InitFunctions();
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nsresult InitStatements();
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nsresult ForceMigrateBookmarksDB(mozIStorageConnection *aDBConn);
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@ -39,8 +39,8 @@
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#ifndef __nsPlacesTables_h__
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#define __nsPlacesTables_h__
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#define CREATE_MOZ_PLACES NS_LITERAL_CSTRING( \
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"CREATE TABLE moz_places ( " \
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#define CREATE_MOZ_PLACES_BASE(__name, __temporary) NS_LITERAL_CSTRING( \
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"CREATE " __temporary " TABLE " __name " ( " \
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" id INTEGER PRIMARY KEY" \
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", url LONGVARCHAR" \
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", title LONGVARCHAR" \
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@ -52,9 +52,18 @@
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", frecency INTEGER DEFAULT -1 NOT NULL" \
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")" \
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)
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#define CREATE_MOZ_PLACES CREATE_MOZ_PLACES_BASE("moz_places", "")
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#define CREATE_MOZ_PLACES_TEMP CREATE_MOZ_PLACES_BASE("moz_places_temp", "TEMP")
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#define CREATE_MOZ_PLACES_VIEW NS_LITERAL_CSTRING( \
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"CREATE TEMPORARY VIEW moz_places_view AS " \
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"SELECT * FROM moz_places_temp " \
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"UNION ALL " \
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"SELECT * FROM moz_places " \
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"WHERE id NOT IN (SELECT id FROM moz_places_temp) " \
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)
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#define CREATE_MOZ_HISTORYVISITS NS_LITERAL_CSTRING( \
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"CREATE TABLE moz_historyvisits (" \
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#define CREATE_MOZ_HISTORYVISITS_BASE(__name, __temporary) NS_LITERAL_CSTRING( \
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"CREATE " __temporary " TABLE " __name " (" \
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" id INTEGER PRIMARY KEY" \
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", from_visit INTEGER" \
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", place_id INTEGER" \
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@ -63,6 +72,17 @@
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", session INTEGER" \
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")" \
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)
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#define CREATE_MOZ_HISTORYVISITS \
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CREATE_MOZ_HISTORYVISITS_BASE("moz_historyvisits", "")
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#define CREATE_MOZ_HISTORYVISITS_TEMP \
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CREATE_MOZ_HISTORYVISITS_BASE("moz_historyvisits_temp", "TEMP")
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#define CREATE_MOZ_HISTORYVISITS_VIEW NS_LITERAL_CSTRING( \
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"CREATE TEMPORARY VIEW moz_historyvisits_view AS " \
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"SELECT * FROM moz_historyvisits_temp " \
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"UNION ALL " \
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"SELECT * FROM moz_historyvisits " \
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"WHERE id NOT IN (SELECT id FROM moz_historyvisits_temp) " \
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)
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#define CREATE_MOZ_INPUTHISTORY NS_LITERAL_CSTRING( \
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"CREATE TABLE moz_inputhistory (" \
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@ -93,4 +93,145 @@
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"END" \
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)
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/**
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* This trigger allows for an insertion into moz_places_view. It enters the new
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* data into the temporary table, ensuring that the new id is one greater than
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* the largest id value found.
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*/
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#define CREATE_PLACES_VIEW_INSERT_TRIGGER NS_LITERAL_CSTRING( \
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"CREATE TEMPORARY TRIGGER moz_places_view_insert_trigger " \
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"INSTEAD OF INSERT " \
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"ON moz_places_view " \
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"BEGIN " \
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"INSERT INTO moz_places_temp ( " \
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"id, url, title, rev_host, visit_count, hidden, typed, favicon_id, " \
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"frecency " \
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") " \
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"VALUES (MAX((SELECT IFNULL(MAX(id), 0) FROM moz_places_temp), " \
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"(SELECT IFNULL(MAX(id), 0) FROM moz_places)) + 1, " \
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"NEW.url, NEW.title, NEW.rev_host, " \
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"IFNULL(NEW.visit_count, 0), " /* enforce having a value */ \
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"NEW.hidden, NEW.typed, NEW.favicon_id, NEW.frecency);" \
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"END" \
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)
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/**
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* This trigger allows for the deletion of a record in moz_places_view. It
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* removes any entry in the temporary table, and any entry in the permanent
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* table as well.
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*/
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#define CREATE_PLACES_VIEW_DELETE_TRIGGER NS_LITERAL_CSTRING( \
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"CREATE TEMPORARY TRIGGER moz_places_view_delete_trigger " \
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"INSTEAD OF DELETE " \
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"ON moz_places_view " \
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"BEGIN " \
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"DELETE FROM moz_places_temp " \
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"WHERE id = OLD.id; " \
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"DELETE FROM moz_places " \
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"WHERE id = OLD.id; " \
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"END" \
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)
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/**
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* This trigger allows for updates to a record in moz_places_view. It first
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* copies the row from the permanent table over to the temp table if it does not
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* exist in the temporary table. Then, it will update the temporary table with
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* the new data.
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*/
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#define CREATE_PLACES_VIEW_UPDATE_TRIGGER NS_LITERAL_CSTRING( \
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"CREATE TEMPORARY TRIGGER moz_places_view_update_trigger " \
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"INSTEAD OF UPDATE " \
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"ON moz_places_view " \
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"BEGIN " \
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"INSERT INTO moz_places_temp " \
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"SELECT * " \
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"FROM moz_places " \
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"WHERE id = OLD.id " \
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"AND id NOT IN (SELECT id FROM moz_places_temp); " \
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"UPDATE moz_places_temp " \
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"SET url = IFNULL(NEW.url, OLD.url), " \
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"title = IFNULL(NEW.title, OLD.title), " \
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"rev_host = IFNULL(NEW.rev_host, OLD.rev_host), " \
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"visit_count = IFNULL(NEW.visit_count, OLD.visit_count), " \
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"hidden = IFNULL(NEW.hidden, OLD.hidden), " \
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"typed = IFNULL(NEW.typed, OLD.typed), " \
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"favicon_id = IFNULL(NEW.favicon_id, OLD.favicon_id), " \
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"frecency = IFNULL(NEW.frecency, OLD.frecency) " \
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"WHERE id = OLD.id; " \
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"END" \
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)
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/**
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* This trigger allows for an insertion into moz_historyvisits_view. It enters
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* the new data into the temporary table, ensuring that the new id is one
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* greater than the largest id value found. It then updates moz_places_view
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* with the new visit count.
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*/
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#define CREATE_HISTORYVISITS_VIEW_INSERT_TRIGGER NS_LITERAL_CSTRING( \
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"CREATE TEMPORARY TRIGGER moz_historyvisits_view_insert_trigger " \
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"INSTEAD OF INSERT " \
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"ON moz_historyvisits_view " \
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"BEGIN " \
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"INSERT INTO moz_historyvisits_temp ( " \
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"id, from_visit, place_id, visit_date, visit_type, session " \
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") " \
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"VALUES (MAX((SELECT IFNULL(MAX(id), 0) FROM moz_historyvisits_temp), " \
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"(SELECT IFNULL(MAX(id), 0) FROM moz_historyvisits)) + 1, " \
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"NEW.from_visit, NEW.place_id, NEW.visit_date, NEW.visit_type, " \
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"NEW.session); " \
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"UPDATE moz_places_view " \
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"SET visit_count = visit_count + 1 " \
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"WHERE id = NEW.place_id " \
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"AND NEW.visit_type NOT IN (0, 4, 7); " /* invalid, EMBED, DOWNLOAD */ \
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"END" \
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)
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/**
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* This trigger allows for the deletion of a record in moz_historyvisits_view.
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* It removes any entry in the temporary table, and removes any entry in the
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* permanent table as well. It then updates moz_places_view with the new visit
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* count.
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*/
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#define CREATE_HISTORYVISITS_VIEW_DELETE_TRIGGER NS_LITERAL_CSTRING( \
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"CREATE TEMPORARY TRIGGER moz_historyvisits_view_delete_trigger " \
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"INSTEAD OF DELETE " \
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"ON moz_historyvisits_view " \
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"BEGIN " \
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"DELETE FROM moz_historyvisits_temp " \
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"WHERE id = OLD.id; " \
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"DELETE FROM moz_historyvisits " \
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"WHERE id = OLD.id; " \
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"UPDATE moz_places_view " \
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"SET visit_count = visit_count - 1 " \
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"WHERE moz_places_view.id = OLD.place_id " \
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"AND OLD.visit_type NOT IN (0, 4, 7); " /* invalid, EMBED, DOWNLOAD */ \
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"END" \
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)
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/**
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* This trigger allows for updates to a record in moz_historyvisits_view. It
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* first copies the row from the permanent table over to the temp table if it
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* does not exist in the temporary table. Then it will update the temporary
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* table with the new data.
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*/
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#define CREATE_HISTORYVISITS_VIEW_UPDATE_TRIGGER NS_LITERAL_CSTRING( \
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"CREATE TEMPORARY TRIGGER moz_historyvisits_view_update_trigger " \
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"INSTEAD OF UPDATE " \
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"ON moz_historyvisits_view " \
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"BEGIN " \
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"INSERT INTO moz_historyvisits_temp " \
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"SELECT * " \
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"FROM moz_historyvisits " \
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"WHERE id = OLD.id " \
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"AND id NOT IN (SELECT id FROM moz_historyvisits_temp); " \
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"UPDATE moz_historyvisits_temp " \
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"SET from_visit = IFNULL(NEW.from_visit, OLD.from_visit), " \
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"place_id = IFNULL(NEW.place_id, OLD.place_id), " \
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"visit_date = IFNULL(NEW.visit_date, OLD.visit_date), " \
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"visit_type = IFNULL(NEW.visit_type, OLD.visit_type), " \
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"session = IFNULL(NEW.session, OLD.session) " \
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"WHERE id = OLD.id; " \
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"END" \
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)
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#endif // __nsPlacesTriggers_h__
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