author Tom Ritter <>
Wed, 09 Jan 2019 10:51:07 -0600
changeset 453621 c5b64daf4dddabb8346cc0fa193720f9eaf7d777
parent 244681 ad01543457e739b4eee7a245e16734a3ecfd10ad
child 475212 020c8c871c0d3b3920fe95935cfef06501976c0f
permissions -rw-r--r--
Bug 1518856 - Remove -I$TOOLTOOL_DIR/clang/lib/clang/8.0.0/include from the Stylo BINDGEN_CFLAGS r=dmajory

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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 */

#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();