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/* -*- 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
#include "nsISupports.idl"
#include "mozIStorageValueArray.idl"
interface mozIStorageConnection;
interface nsIArray;
interface nsIVariant;
/**
* mozIStorageFunction is to be implemented by storage consumers that
* wish to receive callbacks during the request execution.
*
* SQL can apply functions to values from tables. Examples of
* such functions are MIN(a1,a2) or SQRT(num). Many functions are
* implemented in SQL engine.
*
* This interface allows consumers to implement their own,
* problem-specific functions.
* These functions can be called from triggers, too.
*
*/
[scriptable, function, uuid(9ff02465-21cb-49f3-b975-7d5b38ceec73)]
interface mozIStorageFunction : nsISupports {
/**
* onFunctionCall is called when execution of a custom
* function should occur.
*
* @param aNumArguments The number of arguments
* @param aFunctionArguments The arguments passed in to the function
*
* @returns any value as Variant type.
*/
nsIVariant onFunctionCall(in mozIStorageValueArray aFunctionArguments);
};