@Override
public boolean hasNext() {
if (currentIndex >= items.size()) return false;
if (currentCursor == null) return false;
if (currentCursor.hasNext()) return true;
while (true) {
try {
boolean ret = loadNext();
if (!ret) return false;
if (currentCursor.hasNext()) return true;
} catch (IOException e) {
logger.warn("kraken logstorage: cannot fetch next index from merged cursor, skipping", e);
}
}
}
private boolean loadNext() throws IOException {
if (currentCursor != null) {
currentCursor.close();
currentCursor = null;
}
if (currentIndex >= items.size() - 1) return false;
load(++currentIndex);
return true;
}
@Override
public void close() {
if (currentCursor != null) currentCursor.close();
}
@Override
public LogIndexItem next() {
if (!hasNext()) throw new NoSuchElementException();
return currentCursor.next();
}