@Override
// TODO should we use GridTypes here?
public Number nextValue(NextValueRequest request) {
final AdvancedCache<ISK, Object> identifierCache =
getCacheManager().getIdSourceCache(request.getKey().getMetadata()).getAdvancedCache();
ISK cacheKey = getKeyProvider().getIdSourceCacheKey(request.getKey());
boolean done;
Number value;
do {
// skip locking proposed by Sanne
value = (Number) identifierCache.withFlags(Flag.SKIP_LOCKING).get(cacheKey);
if (value == null) {
value = Long.valueOf(request.getInitialValue());
final Number oldValue = (Number) identifierCache.putIfAbsent(cacheKey, value);
if (oldValue != null) {
value = oldValue;
}
}
Number newValue = value.longValue() + request.getIncrement();
done = identifierCache.replace(cacheKey, value, newValue);
} while (!done);
return value;
}
@Override
public Number nextValue(NextValueRequest request) {
final Cache<ISK> cache = getCacheManager().getIdSourceCache(request.getKey().getMetadata());
ISK key = getKeyProvider().getIdSourceCacheKey(request.getKey());
Element previousValue = cache.get(key);
if (previousValue == null) {
previousValue = cache.putIfAbsent(new Element(key, request.getInitialValue()));
}
if (previousValue != null) {
while (!cache.replace(
previousValue,
new Element(
key,
((Number) previousValue.getObjectValue()).longValue() + request.getIncrement()))) {
previousValue = cache.get(key);
}
return ((Number) previousValue.getObjectValue()).longValue() + request.getIncrement();
} else {
return request.getInitialValue();
}
}
@Override
public Number nextValue(NextValueRequest request) {
return neo4jSequenceGenerator.nextValue(
request.getKey(), request.getIncrement(), request.getInitialValue());
}