public void updateIndex() throws IOException, InterruptedException {
IndexPhaseState state;
DiskInvertedList activeIndex;
DiskInvertedList inactiveIndex;
synchronized (mutex) {
state = activeIndexPhase.getAndSet(new IndexPhaseState());
activeIndex = index.getActiveList();
inactiveIndex = index.getInactiveList();
}
// TODO: support merge in multiple passes (or not?)
long newTotalDocuments = documentIndexBuilder.getTotalNumberOfDocuments() + state.size;
int position = 0;
InvertedList[] phaseLists = new InvertedList[2 + state.partialListsOnDisk.size()];
phaseLists[position++] = activeIndex;
phaseLists[position++] = new MemoryInvertedList(state.aggregateState);
for (InvertedList disk : state.partialListsOnDisk) {
phaseLists[position++] = disk;
}
Map<Long, Float> tfIdfAccumulator = new HashMap<Long, Float>();
Iterator<Pair<DictionaryTerm, InvertedListPointer>> result =
mergeInvertedLists(
inactiveIndex.getOverwriteBuilder(), tfIdfAccumulator, newTotalDocuments, phaseLists);
index.updateDictionaryEntries(result);
documentIndexBuilder.updateIndex(tfIdfAccumulator);
}
public int getIndexPhase() {
return index.getActiveList().getIndexPhase();
}