storage/public/mozIStorageFunction.idl

changeset 0
6474c204b198
     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/storage/public/mozIStorageFunction.idl	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,40 @@
     1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
     1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
     1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
     1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
     1.8 +
     1.9 +#include "nsISupports.idl"
    1.10 +
    1.11 +#include "mozIStorageValueArray.idl"
    1.12 +
    1.13 +interface mozIStorageConnection;
    1.14 +interface nsIArray;
    1.15 +interface nsIVariant;
    1.16 +
    1.17 +/**
    1.18 + * mozIStorageFunction is to be implemented by storage consumers that
    1.19 + * wish to receive callbacks during the request execution.
    1.20 + *
    1.21 + * SQL can apply functions to values from tables. Examples of
    1.22 + * such functions are MIN(a1,a2) or SQRT(num). Many functions are
    1.23 + * implemented in SQL engine.
    1.24 + *
    1.25 + * This interface allows consumers to implement their own,
    1.26 + * problem-specific functions.
    1.27 + * These functions can be called from triggers, too.
    1.28 + *
    1.29 + */
    1.30 +[scriptable, function, uuid(9ff02465-21cb-49f3-b975-7d5b38ceec73)]
    1.31 +interface mozIStorageFunction : nsISupports {
    1.32 +  /**
    1.33 +   * onFunctionCall is called when execution of a custom
    1.34 +   * function should occur.
    1.35 +   * 
    1.36 +   * @param aNumArguments         The number of arguments
    1.37 +   * @param aFunctionArguments    The arguments passed in to the function
    1.38 +   *
    1.39 +   * @returns any value as Variant type.
    1.40 +   */
    1.41 +
    1.42 +  nsIVariant onFunctionCall(in mozIStorageValueArray aFunctionArguments);
    1.43 +};

mercurial