public int compare(byte[] o1, byte[] o2) {
if (o1.length == 0) {
return o2.length == 0 ? 0 : -1;
}
if (o2.length == 0) {
return 1;
}
int res = compareTimestampBytes(o1, o2);
if (res != 0) return res;
return FBUtilities.compareByteArrays(o1, o2);
}
public Column reconcile(Column left, Column right) {
ClockRelationship cr = left.clock().compare(right.clock());
switch (cr) {
case EQUAL:
// tombstones take precedence. (if both are tombstones, then it doesn't matter which one we
// use.)
if (left.isMarkedForDelete()) return left;
if (right.isMarkedForDelete()) return right;
// break ties by comparing values.
return FBUtilities.compareByteArrays(left.value(), right.value()) < 0 ? right : left;
case GREATER_THAN:
return left;
case LESS_THAN:
return right;
default:
throw new IllegalArgumentException(
"Timestamp clocks must either be equal, greater then or less than: " + cr);
}
}