/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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 * ***** 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 Oracle Corporation code.
 *
 * The Initial Developer of the Original Code is
 *  Oracle Corporation
 * Portions created by the Initial Developer are Copyright (C) 2004
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *   Vladimir Vukicevic <vladimir.vukicevic@oracle.com>
 *   Shawn Wilsher <me@shawnwilsher.com>
 *
 * 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
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 * in which case the provisions of the GPL or the LGPL are applicable instead
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#ifndef _mozStoragePrivateHelpers_h_
#define _mozStoragePrivateHelpers_h_

/**
 * This file contains convenience methods for mozStorage.
 */

#include "sqlite3.h"
#include "nsIVariant.h"
#include "mozStorage.h"
#include "jsapi.h"

class mozIStorageStatement;

namespace mozilla {
namespace storage {

////////////////////////////////////////////////////////////////////////////////
//// Macros

#define ENSURE_INDEX_VALUE(aIndex, aCount) \
  NS_ENSURE_TRUE(aIndex < aCount, NS_ERROR_INVALID_ARG)

////////////////////////////////////////////////////////////////////////////////
//// Functions

/**
 * Converts a SQLite return code to an nsresult return code.
 *
 * @param aSQLiteResultCode
 *        The SQLite return code to convert.
 * @returns the corresponding nsresult code for aSQLiteResultCode.
 */
nsresult convertResultCode(int aSQLiteResultCode);

/**
 * Checks the performance of a SQLite statement and logs a warning with
 * NS_WARNING.  Currently this only checks the number of sort operations done
 * on a statement, and if more than zero have been done, the statement can be
 * made faster with the careful use of an index.
 *
 * @param aStatement
 *        The sqlite3_stmt object to check.
 */
void checkAndLogStatementPerformance(sqlite3_stmt *aStatement);

/**
 *
 */
bool
bindJSValue(JSContext *aCtx,
            mozIStorageStatement *aStatement,
            int aIdx,
            jsval aValue);

/**
 * Used to convert an nsIVariant to the proper SQLite type.
 */
template <typename T>
int variantToSQLiteT(T aObj, nsIVariant *aValue);
#include "variantToSQLiteT_impl.h" // To keep this file easier to read.

} // namespace storage
} // namespace mozilla

#endif // _mozStoragePrivateHelpers_h_