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f1886e9571
This adds a method to mozIStorageStatement to allow for a statement to execute asynchronously and report to a callback. For writes, this can move fsyncs, which can be painful, off of the main thread. r=vlad sr=shaver
82 lines
3.3 KiB
Plaintext
82 lines
3.3 KiB
Plaintext
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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* vim: sw=2 ts=2 sts=2 expandtab
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* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Mozilla Corporation.
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* Portions created by the Initial Developer are Copyright (C) 2008
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Shawn Wilsher <me@shawnwilsher.com> (Original Author)
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nsISupports.idl"
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interface mozIStorageResultSet;
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interface mozIStorageError;
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[scriptable, uuid(29383d00-d8c4-4ddd-9f8b-c2feb0f2fcfa)]
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interface mozIStorageStatementCallback : nsISupports {
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/**
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* Called when some result is obtained from the database. This function can
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* be called more than once with a different storageIResultSet each time for
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* any given asynchronous statement.
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*
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* @param aResultSet
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* The result set containing the data from the database.
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*/
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void handleResult(in mozIStorageResultSet aResultSet);
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/**
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* Called when some error occurs while executing the statement. This function
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* may be called more than once with a different storageIError each time for
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* any given asynchronous statement.
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*
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* @param aError
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* An object containing information about the error.
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*/
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void handleError(in mozIStorageError aError);
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/**
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* Called when the statement has finished executing. This function will only
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* be called once for any given asynchronous statement.
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*
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* @param aReason
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* Indicates if the statement is no longer executing because it either
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* finished (REASON_FINISHED), was canceled (REASON_CANCELED), or
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* a fatal error occurred (REASON_ERROR).
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*/
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const unsigned short REASON_FINISHED = 0;
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const unsigned short REASON_CANCELED = 1;
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const unsigned short REASON_ERROR = 2;
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void handleCompletion(in unsigned short aReason);
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};
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