private void populateCache(int index) {
if (cache == null) {
int size = CacheKey.values().length;
cache = new Object[size];
cacheState = new byte[size];
}
if (cacheState[index] == STATE_NOT_CACHED) {
CacheKey key = CacheKey.values()[index];
if (getJSONObject().has(key.name())) {
cache[index] = key.extractValue(this);
cacheState[index] = STATE_CACHED_VALUE;
} else {
cacheState[index] = STATE_CACHED_NO_VALUE;
}
}
}
