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sbMigrate11pre1bTo11pre1c.js
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2010-08-30
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/*
//
// BEGIN SONGBIRD GPL
//
// This file is part of the Songbird web player.
//
// Copyright(c) 2005-2008 POTI, Inc.
// http://songbirdnest.com
//
// This file may be licensed under the terms of of the
// GNU General Public License Version 2 (the "GPL").
//
// Software distributed under the License is distributed
// on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either
// express or implied. See the GPL for the specific language
// governing rights and limitations.
//
// You should have received a copy of the GPL along with this
// program. If not, go to http://www.gnu.org/licenses/gpl.html
// or write to the Free Software Foundation, Inc.,
// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
//
// END SONGBIRD GPL
//
*/
Components.utils.import("resource://gre/modules/XPCOMUtils.jsm");
Components.utils.import("resource://app/jsmodules/ArrayConverter.jsm");
Components.utils.import("resource://app/jsmodules/sbLocalDatabaseMigrationUtils.jsm");
Components.utils.import("resource://app/jsmodules/SBJobUtils.jsm");
const Cc = Components.classes;
const Ci = Components.interfaces;
const Cr = Components.results;
function LOG(s) {
dump("----++++----++++sbLibraryMigration " +
sbLibraryMigration.versionString + ": " +
s +
"\n----++++----++++\n");
}
function sbLibraryMigration()
{
SBLocalDatabaseMigrationUtils.BaseMigrationHandler.call(this);
this.fromVersion = 14;
this.toVersion = 15;
this.versionString = this.fromVersion + " to " +
this.toVersion;
}
//-----------------------------------------------------------------------------
// sbLocalDatabaseMigration Implementation
//-----------------------------------------------------------------------------
sbLibraryMigration.prototype = {
__proto__: SBLocalDatabaseMigrationUtils.BaseMigrationHandler.prototype,
classDescription: 'Songbird Migration Handler, version 14 to 15',
classID: Components.ID("{3e473356-a84a-4243-a597-6919cb1a26ff}"),
contractID: SBLocalDatabaseMigrationUtils.baseHandlerContractID + ' 14 to 15',
_databaseLocation: null,
_databaseGUID: null,
migrate: function sbLibraryMigration_migrate(aLibrary) {
try{
this._databaseGUID = aLibrary.databaseGuid;
this._databaseLocation = aLibrary.databaseLocation;
var query = this._createQuery();
// because sqlite does not support ALTER COLUMN, we have to create
// a new table and replace the old one.
// create the new resource_properties table with correct collation sequences
query.addQuery("create table resource_properties_2 (" +
"media_item_id integer not null," +
"property_id integer not null," +
"obj text not null," +
"obj_searchable text," +
"obj_sortable text collate library_collate," +
"obj_secondary_sortable text collate library_collate," +
"primary key (media_item_id, property_id)" +
");");
// copy the data from the old table to the new. note that we drop the obj_*
// data because we are going to recompute it anyway. this boosts the
// creation of the index, since all the comparisons will be on empty
// strings.
query.addQuery("insert into resource_properties_2 (media_item_id, property_id, obj) select media_item_id, property_id, obj from resource_properties;");
// drop the old table
query.addQuery("drop table resource_properties;");
// rename the new table into the old one
query.addQuery("alter table resource_properties_2 rename to resource_properties;");
// recreate the index
query.addQuery("create index idx_resource_properties_property_id_obj_sortable_obj_secondary_sortable_media_item_id on resource_properties " +
"(property_id, obj_sortable, obj_secondary_sortable, media_item_id);");
// Update the schema version to the destination version.
query.addQuery("update library_metadata set value = '"
+ this.toVersion + "' where name = 'version'");
query.addQuery("commit");
// Try to reduce db size
query.addQuery("VACUUM");
var retval;
query.setAsyncQuery(true);
query.execute(retval);
this._titleText = "Library Migration Helper";
this._statusText = "Improving sorting data...";
this.migrationQuery = query;
var sip = Cc["@mozilla.org/supports-interface-pointer;1"]
.createInstance(Ci.nsISupportsInterfacePointer);
sip.data = this;
this.startNotificationTimer();
SBJobUtils.showProgressDialog(sip.data, null, 0);
this.stopNotificationTimer();
// Raise a flag indicating that this library will need all
// sort info to be recomputed.
// Normally we'd call propertyCache.invalidateSortData(), but
// at this point in startup the property cache does not exist yet.
var prefs = Cc["@mozilla.org/preferences-service;1"]
.getService(Ci.nsIPrefBranch);
prefs.setBoolPref("songbird.propertycache." +
this._databaseGUID + ".invalidSortData", true);
prefs.QueryInterface(Ci.nsIPrefService).savePrefFile(null);
}
catch (e) {
dump("Exception occured: " + e);
throw e;
}
},
_createQuery: function sbLibraryMigration_createQuery() {
var query = Cc["@songbirdnest.com/Songbird/DatabaseQuery;1"]
.createInstance(Ci.sbIDatabaseQuery);
query.databaseLocation = this._databaseLocation;
query.setDatabaseGUID(this._databaseGUID);
return query;
}
};
//-----------------------------------------------------------------------------
// Module
//-----------------------------------------------------------------------------
function NSGetModule(compMgr, fileSpec) {
return XPCOMUtils.generateModule([
sbLibraryMigration
]);
}