/* Gamelon(tm) File I/O Library Sample Code C Language */
/* (C)1994 Menai Corporation(tm) Released for public use */
/* Example 5c. Modifying the contents of an aggregate */
/* object. */
/* Much like the value of a data object, the contents */
/* of an aggregate can be changed during a Modify */
/* alteration on the aggregate. In order to perform */
/* the modification, the new objects to be added to */
/* the aggregate must be added using a block */
/* aggregating alteration. For example: */
/* Beginning file layout: */
/* { } */
/* [2]{ }[3.14159] */
/* [5700304] */
#include <stdlib.h>
#include "gfcursor.h"
int main(void) {
char stringval[20] = "Carpe Diem.";
char newchar = 'u';
int valid;
CURSOR *c = new_CURSOR(NULL,
"newfile",
AM_SHARED,
NULL,
0);
eCursorQueryValid(c, &valid);
if (!valid)
exit(1);
eCursorMoveIn(c);
eCursorMoveNext(c, OT_OBJ);
eAltModify(c);
eAltStartAggregating(c);
eObjWriteString(c, stringval);
eObjWriteChar(c, newchar);
eAltCommit(c);
delete_CURSOR(c);
return 0;
}
/* Ending file layout: */
/* { } */
/* [2]{ }[3.14159] */
/* ["Carpe Diem."]['u'] */
/* Notice that when new contents are specified for an */
/* aggregate being modified, all the existing contents */
/* are removed, including all aggregates nested within */
/* the aggregate being modified. This is a very */
/* powerful feature and should be used with caution. */
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