/*

 * Licensed to the Apache Software Foundation (ASF) under one or more

 * contributor license agreements.  See the NOTICE file distributed with

 * this work for additional information regarding copyright ownership.

 * The ASF licenses this file to You under the Apache License, Version 2.0

 * (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.apache.org/licenses/LICENSE-2.0

 * 

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */

/*

 * $Id: PanicHandler.hpp 568078 2007-08-21 11:43:25Z amassari $

 */

#ifndef PANICHANDLER_HPP

#define PANICHANDLER_HPP

#include <xercesc/util/XMemory.hpp>

XERCES_CPP_NAMESPACE_BEGIN

/**

  * Receive notification of panic.

  *

  * <p>This is the interface, through which the Xercesc reports

  *    a panic to the application. 

  * </p>

  *

  * <p>Application may implement this interface, instantiate an

  *    object of the derivative, and plug it to Xercesc in the

  *    invocation to XMLPlatformUtils::Initialize(), if it prefers 

  *    to handling panic itself rather than Xercesc doing it.

  * </p>

  *

  */

class XMLUTIL_EXPORT PanicHandler

{

public:

    /** @name Public Types */

    //@{

    enum PanicReasons

    {

          Panic_NoTransService

        , Panic_NoDefTranscoder

        , Panic_CantFindLib

        , Panic_UnknownMsgDomain

        , Panic_CantLoadMsgDomain

        , Panic_SynchronizationErr

        , Panic_SystemInit

        , Panic_AllStaticInitErr

        , Panic_MutexErr

        , PanicReasons_Count

    };

    //@}

protected:

    /** @name hidden Constructors */

    //@{

    /** Default constructor */

    PanicHandler(){};

public:

    /** Destructor */

    virtual ~PanicHandler(){};   

    //@}

    /** @name The virtual panic handler interface */

    //@{

   /**

    * Receive notification of panic

    *

    * This method is called when an unrecoverable error has occurred in the Xerces library.  

    *

    * This method must not return normally, otherwise, the results are undefined. 

    * 

    * Ways of handling this call could include throwing an exception or exiting the process.

    *

    * Once this method has been called, the results of calling any other Xerces API, 

    * or using any existing Xerces objects are undefined.    

    *

    * @param reason The reason of panic

    *

    */

    virtual void panic(const PanicHandler::PanicReasons reason) = 0;

    //@}

    static const char* getPanicReasonString(const PanicHandler::PanicReasons reason);

private:

    /* Unimplemented Constructors and operators */

    /* Copy constructor */

    PanicHandler(const PanicHandler&);

    /** Assignment operator */

    PanicHandler& operator=(const PanicHandler&);

};

XERCES_CPP_NAMESPACE_END

#endif