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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2000, 2010 Oracle and/or its affiliates.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
#ifndef __FRAMEWORK_THREADHELP_ITRANSACTIONMANAGER_H_
#define __FRAMEWORK_THREADHELP_ITRANSACTIONMANAGER_H_
#include <general.h>
#include <com/sun/star/uno/RuntimeException.hpp>
#include <com/sun/star/lang/DisposedException.hpp>
//_________________________________________________________________________________________________________________
// namespace
//_________________________________________________________________________________________________________________
namespace framework{
//_________________________________________________________________________________________________________________
// declarations
//_________________________________________________________________________________________________________________
/*-************************************************************************************************************//**
@descr Describe different states of a feature of following implementation.
During live time of an object different working states occure:
initialization - working - closing - closed
If you whish to implement thread safe classes you should use these feature to protect
your code against calls at wrong time. e.g. you are not full initialized but somewhere
call an interface method (initialize phase means startup time from creating object till
calling specified first method e.g. XInitialization::initialze()!) then you should refuse
this call. The same for closing/disposing the object!
*//*-*************************************************************************************************************/
enum EWorkingMode
{
E_INIT , // We stand in a init method -> some calls are accepted - some one are rejected
E_WORK , // Object is ready for working -> all calls are accepted
E_BEFORECLOSE, // We stand in a close method -> some calls are accepted - some one are rejected
E_CLOSE // Object is dead! -> all calls are rejected!
};
/*-************************************************************************************************************//**
@descr If a request was refused by a transaction manager (internal state different E_WORK ...)
user can check the reason by using this enum values.
*//*-*************************************************************************************************************/
enum ERejectReason
{
E_UNINITIALIZED ,
E_NOREASON ,
E_INCLOSE ,
E_CLOSED
};
/*-************************************************************************************************************//**
@descr A transaction object should support throwing exceptions if user used it at wrong working mode.
e.g. We can throw a DisposedException if user try to work and our mode is E_CLOSE!
But sometimes he dont need this feature - will handle it by himself.
Then we must differ between some exception-modi:
E_NOEXCEPTIONS We never throw any exceptions! User handle it private and looks for ERejectReason.
E_HARDEXCEPTIONS We throw exceptions for all working modes different from E_WORK!
E_SOFTEXCEPTIONS We throw exceptions for all working modes different from E_WORK AND E_INCLOSE!
This mode is useful for impl-methods which should be callable from dispose() method!
e.g. void dispose()
{
m_aTransactionManager.setWorkingMode( E_BEFORECLOSE );
...
impl_setA( 0 );
...
m_aTransactionManager.setWorkingMode( E_CLOSE );
}
void impl_setA( int nA )
{
ERejectReason EReason;
TransactionGuard aTransactionGuard( m_aTransactionManager, E_SOFTEXCEPTIONS, eReason );
m_nA = nA;
}
Normaly (if E_HARDEXCEPTIONS was used!) creation of guard
will throw an exception ... but using of E_SOFTEXCEPTIONS suppress it
and member "A" can be set.
*//*-*************************************************************************************************************/
enum EExceptionMode
{
E_NOEXCEPTIONS ,
E_HARDEXCEPTIONS,
E_SOFTEXCEPTIONS
};
/*-************************************************************************************************************//**
@descr How can you use the transaction manager?
Use it in combination with an TransactionGuard, which register your transaction in ctor
and release in dtor automaticly! Follow interface class can be used to make using
of different manager implmentations possible by using same guard.
*//*-*************************************************************************************************************/
class ITransactionManager
{
//-------------------------------------------------------------------------------------------------------------
// public methods
//-------------------------------------------------------------------------------------------------------------
public:
/*-****************************************************************************************************//**
@descr These functions must be supported by a derived class!
getWorkingMode() -return current set working mode
setWorkingMode() -change working mode
(This will block till all current transactions are finished!)
isCallRejected() -test method to check if a call will be rejected by wrong working mode or not
registerTransaction() -start new transaction (increase internal transaction count)
unregisterTransaction() -finish transaction (decrease internal transaction count)
*//*-*****************************************************************************************************/
virtual EWorkingMode getWorkingMode ( ) const = 0;
virtual void setWorkingMode ( EWorkingMode eMode ) = 0;
virtual sal_Bool isCallRejected ( ERejectReason& eReason ) const = 0;
virtual void registerTransaction ( EExceptionMode eMode , ERejectReason& eReason ) throw( css::uno::RuntimeException, css::lang::DisposedException ) = 0;
virtual void unregisterTransaction ( ) throw( css::uno::RuntimeException, css::lang::DisposedException ) = 0;
protected:
~ITransactionManager() {}
}; // class ITransactionManager
} // namespace framework
#endif // #ifndef __FRAMEWORK_THREADHELP_ITRANSACTIONMANAGER_H_
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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