зеркало из https://github.com/mozilla/gecko-dev.git
71 строка
2.8 KiB
Plaintext
71 строка
2.8 KiB
Plaintext
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* ***** BEGIN LICENSE BLOCK *****
|
|
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
|
|
*
|
|
* The contents of this file are subject to the Mozilla Public License Version
|
|
* 1.1 (the "License"); you may not use this file except in compliance with
|
|
* the License. You may obtain a copy of the License at
|
|
* http://www.mozilla.org/MPL/
|
|
*
|
|
* Software distributed under the License is distributed on an "AS IS" basis,
|
|
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
|
|
* for the specific language governing rights and limitations under the
|
|
* License.
|
|
*
|
|
* The Original Code is Storage Code.
|
|
*
|
|
* The Initial Developer of the Original Code is
|
|
* Lev Serebryakov <lev@serebryakov.spb.ru>
|
|
* Portions created by the Initial Developer are Copyright (C) 2007
|
|
* the Initial Developer. All Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
*
|
|
* Alternatively, the contents of this file may be used under the terms of
|
|
* either the GNU General Public License Version 2 or later (the "GPL"), or
|
|
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
|
|
* in which case the provisions of the GPL or the LGPL are applicable instead
|
|
* of those above. If you wish to allow use of your version of this file only
|
|
* under the terms of either the GPL or the LGPL, and not to allow others to
|
|
* use your version of this file under the terms of the MPL, indicate your
|
|
* decision by deleting the provisions above and replace them with the notice
|
|
* and other provisions required by the GPL or the LGPL. If you do not delete
|
|
* the provisions above, a recipient may use your version of this file under
|
|
* the terms of any one of the MPL, the GPL or the LGPL.
|
|
*
|
|
* ***** END LICENSE BLOCK ***** */
|
|
|
|
#include "nsISupports.idl"
|
|
|
|
interface mozIStorageConnection;
|
|
interface mozIStorageValueArray;
|
|
interface nsIArray;
|
|
interface nsIVariant;
|
|
|
|
/**
|
|
* mozIStorageAggregateFunction represents aggregate SQL function.
|
|
* Common examples of aggregate functions are SUM() and COUNT().
|
|
*
|
|
* An aggregate function calculates one result for a given set of data, where
|
|
* a set of data is a group of tuples. There can be one group
|
|
* per request or many of them, if GROUP BY clause is used or not.
|
|
*/
|
|
[scriptable, uuid(763217b7-3123-11da-918d-000347412e16)]
|
|
interface mozIStorageAggregateFunction : nsISupports {
|
|
/**
|
|
* onStep is called when next value should be passed to
|
|
* a custom function.
|
|
*
|
|
* @param aFunctionArguments The arguments passed in to the function
|
|
*/
|
|
void onStep(in mozIStorageValueArray aFunctionArguments);
|
|
|
|
/**
|
|
* Called when all tuples in a group have been processed and the engine
|
|
* needs the aggregate function's value.
|
|
*
|
|
* @returns aggregate result as Variant.
|
|
*/
|
|
nsIVariant onFinal();
|
|
};
|