/**
* Allocates file space for the row.
*
* <p>A Row is added by walking the list of CacheFree objects to see if there is available space
* to store it, reusing space if it exists. Otherwise the file is grown to accommodate it.
*/
private int setFilePos(CachedObject r) throws IOException {
int rowSize = r.getStorageSize();
int i = freeBlocks == null ? -1 : freeBlocks.get(rowSize);
if (i == -1) {
i = (int) (fileFreePosition / cacheFileScale);
long newFreePosition = fileFreePosition + rowSize;
if (newFreePosition > maxDataFileSize) {
throw new IOException(Trace.getMessage(Trace.DATA_FILE_IS_FULL));
}
fileFreePosition = newFreePosition;
}
r.setPos(i);
return i;
}
