/** Creates a new sorted wrapper, sorting by BytesRef (ascending) then cost (ascending). */
public SortedInputIterator(InputIterator source, Comparator<BytesRef> comparator)
throws IOException {
this.hasPayloads = source.hasPayloads();
this.hasContexts = source.hasContexts();
this.source = source;
this.comparator = comparator;
this.reader = sort();
}
/** Creates a new iterator, buffering entries from the specified iterator */
public BufferedInputIterator(InputIterator source) throws IOException {
BytesRef spare;
int freqIndex = 0;
hasPayloads = source.hasPayloads();
hasContexts = source.hasContexts();
while ((spare = source.next()) != null) {
entries.append(spare);
if (hasPayloads) {
payloads.append(source.payload());
}
if (hasContexts) {
contextSets.add(source.contexts());
}
if (freqIndex >= freqs.length) {
freqs = ArrayUtil.grow(freqs, freqs.length + 1);
}
freqs[freqIndex++] = source.weight();
}
}