/* ***** 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 mozilla.org code.
 *
 * The Initial Developer of the Original Code is Jan Varga
 * Portions created by the Initial Developer are Copyright (C) 2003
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *
 * 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
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */

#ifndef mozSqlConnection_h
#define mozSqlConnection_h                                                  

#include "prcvar.h"
#include "nsString.h"
#include "nsCOMArray.h"
#include "nsWeakReference.h"
#include "nsIThread.h"
#include "nsIRunnable.h"
#include "mozISqlConnection.h"
#include "mozISqlRequest.h"
#include "mozISqlResult.h"

class mozSqlConnection : public mozISqlConnection,
                         public nsIRunnable,
                         public nsSupportsWeakReference
{
  public:
    mozSqlConnection();
    virtual ~mozSqlConnection();

    NS_DECL_ISUPPORTS

    NS_DECL_MOZISQLCONNECTION

    NS_DECL_NSIRUNNABLE

    friend class mozSqlRequest;
    friend class mozSqlResult;

  protected:
    virtual nsresult RealExec(const nsAString& aQuery,
                              mozISqlResult** aResult, PRInt32* aAffectedRows) = 0;
    virtual nsresult CancelExec() = 0;
    virtual nsresult GetIDName(nsAString& aIDName) = 0;

    nsresult CancelRequest(mozISqlRequest* aRequest);

    nsString                    mServerVersion;
    nsString                    mErrorMessage;
    PRInt32                     mLastID;

    PRLock*                     mLock;
    PRCondVar*                  mCondVar;
    PRLock*                     mExecLock;
    nsCOMPtr<nsIThread>         mThread;
    nsCOMArray<mozISqlRequest>  mRequests;
    nsCOMPtr<mozISqlRequest>    mCurrentRequest;
    PRBool                      mShutdown;
    PRBool                      mWaiting;
};

#endif // mozSqlConnection_h
