@Override
public void clear() throws StorageException {
final StubIndexImpl stubIndex = StubIndexImpl.getInstanceOrInvalidate();
final Collection<StubIndexKey> allStubIndexKeys =
stubIndex != null
? stubIndex.getAllStubIndexKeys()
: Collections.<StubIndexKey>emptyList();
try {
for (StubIndexKey key : allStubIndexKeys) {
//noinspection ConstantConditions
stubIndex.getWriteLock(key).lock();
}
getWriteLock().lock();
if (stubIndex != null) {
stubIndex.clearAllIndices();
}
super.clear();
} finally {
getWriteLock().unlock();
for (StubIndexKey key : allStubIndexKeys) {
//noinspection ConstantConditions
stubIndex.getWriteLock(key).unlock();
}
}
}
@Override
protected void updateWithMap(
final int inputId,
@NotNull final Map<Integer, SerializedStubTree> newData,
@NotNull Callable<Collection<Integer>> oldKeysGetter)
throws StorageException {
checkNameStorage();
final Map<StubIndexKey, Map<Object, int[]>> newStubTree = getStubTree(newData);
final StubIndexImpl stubIndex = getStubIndex();
final Collection<StubIndexKey> allStubIndices = stubIndex.getAllStubIndexKeys();
try {
// first write-lock affected stub indices to avoid deadlocks
for (StubIndexKey key : allStubIndices) {
stubIndex.getWriteLock(key).lock();
}
try {
getWriteLock().lock();
final Map<Integer, SerializedStubTree> oldData = readOldData(inputId);
final Map<StubIndexKey, Map<Object, int[]>> oldStubTree = getStubTree(oldData);
super.updateWithMap(inputId, newData, oldKeysGetter);
updateStubIndices(
getAffectedIndices(oldStubTree, newStubTree), inputId, oldStubTree, newStubTree);
} finally {
getWriteLock().unlock();
}
} finally {
for (StubIndexKey key : allStubIndices) {
stubIndex.getWriteLock(key).unlock();
}
}
}