ChunkProducerFactory.h

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/*! \file ChunkProducerFactory.h
  \brief  The ChunkProducerFactory class.  Factory for creating ChunkProducers.

  \par Copyright Information

  Copyright (c) 2012 The DiSTI Corporation.<br>
  11301 Corporate Blvd; Suite 100<br>
  Orlando, Florida 32817<br>
  USA<br>
  <br>
  All rights reserved.<br>

  This Software contains proprietary trade secrets of DiSTI and may not be
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mechanical, or otherwise, without the written permission of DiSTI.  Said
permission may be derived through the purchase of applicable DiSTI product
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Derivative Works based on this or other copyrighted DiSTI Software.

  NO WARRANTY. THE SOFTWARE IS PROVIDED "AS-IS," WITHOUT WARRANTY OF ANY KIND,
AND ANY USE OF THIS SOFTWARE PRODUCT IS AT YOUR OWN RISK. TO THE MAXIMUM EXTENT
PERMITTED BY APPLICABLE LAW, DISTI AND ITS SUPPLIERS DISCLAIM ALL WARRANTIES
AND CONDITIONS, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
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  LIMITATION OF LIABILITY. TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW,
IN NO EVENT SHALL DISTI OR ITS SUPPLIERS BE LIABLE FOR ANY SPECIAL, INCIDENTAL,
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*/

#ifndef _ChunkProducer_h_
#define _ChunkProducer_h_

#include "DDD_Include.h"
#include "ChunkProducer.h"
#include "dynamic_ptr_array.h"

namespace disti
{

typedef ChunkProducer* (*ProducerCreateFunc)(void);

class DDD_EXPORT ChunkProducerFactory 
{
protected:
    typedef struct 
    {
        std::string _name;         /**< Tag name */
        ProducerCreateFunc _func;  /**< Creator function */
    } ChunkProducerFactoryStruct;

    static DynamicPtrArray<ChunkProducerFactoryStruct *> _makerList; /**< The list of registered makers */

    /** Constructor */
    ChunkProducerFactory();

    /** Destructor */
    ~ChunkProducerFactory();

public:
    /** Public interface to the singleton 
      * \return Returns a pointer to the singleton instance 
      */
    static ChunkProducerFactory& Instance();

    /** Registers a new producer type with the factory
      * \param producerName  The tag name associated with the producer
      * \param func  A function that creates a producer of the type specified by producerName
      */
    static void RegisterProducer(const std::string &producerName,ProducerCreateFunc func);

    /** \return  Returns a new ChunkProducer instance of the type specified or NULL if
      *          no producer with that tag is registered
      * \param   producerName  The type of producer to create
      */
    static ChunkProducer *CreateProducer(const std::string &producerName);
};

} // end of namespace disti
#endif