private boolean eventuallyGetMaxKeyInDB(final FDate key, final boolean force) {
// not updating highest allowed key, since this already happened during key adjustment
final FDate newMaxKeyInDB = getAdjustKeyProvider().getHighestAllowedKey();
if (newMaxKeyInDB != null) {
if (newMaxKeyInDB.isAfter(maxKeyInDB)) {
maxKeyInDB = newMaxKeyInDB;
return true;
} else {
return false;
}
}
// fallback to normal procedure if curHighWaterMark is not provided by provider
if (maxKeyInDB == null || force) {
final V maxValue = readNewestValueFromDB(maxKey());
if (maxValue != null) {
final FDate maxValueKey = extractKey(key, maxValue);
if (maxKeyInDB == null || maxValueKey.compareTo(maxKeyInDB) <= -1) {
maxKeyInDB = maxValueKey;
getValuesMap().put(maxValueKey, maxValue);
return true;
}
}
}
return false;
}
private boolean isPotentiallyAlreadyEvicted(final FDate key, final V value) {
final boolean isEvictedBeforeCurrentFurtherValues =
(value == null || extractKey(key, value).isAfter(key))
&& (key.isAfter(minKeyInDB) || key.isAfter(minKeyInDBFromLoadFurtherValues));
if (isEvictedBeforeCurrentFurtherValues) {
return true;
}
final boolean mightBeEvictedAfterFurtherValues = value != null && furtherValues.isEmpty();
if (mightBeEvictedAfterFurtherValues) {
final FDate valueKey = extractKey(key, value);
final boolean isEvictedAfterCurrentFurtherValues =
valueKey.isBefore(key) && valueKey.isBeforeOrEqualTo(maxKeyInDB);
if (isEvictedAfterCurrentFurtherValues) {
return true;
}
}
return false;
}