/* Gamelon(tm) File I/O Library Sample Code - C++ Language */
/* (C)1994 Menai Corporation(tm) - Released for public use */

/* Example 8. How to conduct a Wandering Transaction    */
/* alteration.                                          */

/* The Wandering Transaction is simply an aggregation   */
/* of multiple individual alterations. As a result, in  */
/* order to specify a Wandering Transaction, the        */
/* program need only indicate the beginning and end of  */
/* the Wandering Transaction as follows:                */

/* Beginning file layout:      */
/*  {                       }  */
/*   [2]{         }[3.14159]   */
/*       [5700304]             */

#include <stdlib.h>
#include "gfcursor.hpp"

int main(void) {
	char newchar = 'u';
	short i = 17;
	int valid;
	CURSOR *c = new CURSOR("newfile");
	c->eCursorQueryValid(&valid);
	if (!valid)
		exit(-1);
	c->eCursorMoveIn();
	c->eCursorMoveLast();
	c->eCursorMovePrior();
	c->eCursorMoveIn();
	c->eCursorMovePostLast();
	c->eAltBeginWanderingTransaction();
	c->eAltInsert();
	c->eObjWrite(newchar);
	c->eCursorMoveOut();
	c->eCursorMovePreFirst();
	c->eAltAppend();
	c->eObjWriteAggregate();
	c->eCursorMoveNext();
	c->eAltModify();
/* Note:  Newly added aggregate not      */
/* accessible yet. Object being modified */
/* is the data object containing '2'.    */
	c->eObjWrite(i);
	c->eAltCommitWanderingTransaction();
	delete c;
	return 0;
}

/* Ending file layout:                 */
/*  {                               }  */
/*   {}[17]{              }[3.14159]   */
/*          [5700304]['u']             */

/* Any and all individual simple or block alterations */
/* specified between the Begin Wandering Transaction  */
/* and Commit Wandering Transaction calls will be     */
/* submitted to the file as a single set of changes.  */
/* They will only be written to file if all the       */
/* specified changes can be written to file at the    */
/* same time.                                         */