XSerializeEngine.cpp

//  Template object
// ---------------------------------------------------------------------------
/***
 *
 *  Search the store pool to see if the address has been seen before or not.
 *
 *  If yes, write the corresponding object Tag to the internal buffer
 *  and return true.
 *
 *  Otherwise, add the address to the store pool and return false
 *  to notifiy the client application code to store the template object.
 *
 ***/
bool XSerializeEngine::needToStoreObject(void* const  templateObjectToWrite)
{
    ensureStoring(); //don't ensurePointer here !!!

    XSerializedObjectId_t   objIndex = 0;

	if (!templateObjectToWrite)  
	{
		*this << fgNullObjectTag; // null pointer
        return false;
	}
    else if (objIndex = lookupStorePool(templateObjectToWrite))
	{
        *this << objIndex;         // write an object reference tag
        return false;
	}
	else
	{
        *this << fgTemplateObjTag;            // write fgTemplateObjTag to denote that actual
                                              // template object follows
        addStorePool(templateObjectToWrite); // put the address into StorePool
        return true;
	}

}

bool XSerializeEngine::needToLoadObject(void**  templateObjectToRead)
{
    ensureLoading();

	XSerializedObjectId_t obTag;

    *this >> obTag;
  
	if (obTag == fgTemplateObjTag)
	{
        /***
         * what follows fgTemplateObjTag is the actual template object
         * We need the client application to create a template object
         * and register it through registerObject(), and deserialize
         * template object
         ***/
        return true;
	}
	else
	{
        /***
         * We hava a reference to an existing template object, get it.
         */
        *templateObjectToRead = lookupLoadPool(obTag);
        return false;
   }

}

void XSerializeEngine::registerObject(void*  const templateObjectToRegister)
{
    ensureLoading();
    addLoadPool(templateObjectToRegister);
}

XERCES_CPP_NAMESPACE_END