Provide a 'RangeUtils' class for computing subsets of a navigable set
with natural element order, with each bound defined by a mathematical
filter (that is, a predicate specifying whether an element is 'big' -
true, or 'small' - false), instead of a specific element. This allows
the subset of all elements which map into a given range to be computed,
provided the mapping function is (strictly or non-strictly) increasing.
Provide a fluent interface for this in RangeUtils (with unit tests).
To support this, provide a Comparable sub-interface, 'ComparableExt', of
elements which may be compared with marks/delimiters instead of just
elements of the same type, to work round the limitation that sorted (&
navigable) Sets/Maps in Java do not support general binary searching
with a filter (predicate) on the keys instead of just a specific key.
This will make it possible to efficiently take subsets of objects within
a given date range, say, without having to scan the entire set, provided
it is sorted (w.r.t. a suitable natural order).
Use a DoubleStream when streaming over 'List<Double>' method arguments
in InlierUtil, as well as a primitive array sort in 'InlierUtil.trim'
(followed by taking a sublist view), instead of calling 'Stream.sorted'.
To this end, use Guava 'Doubles.asList' to pass lists of Doubles to/from
the InlierUtil methods without incurring any boxing or unboxing costs,
since their spliterators can be simply downcast to Spliterator.OfDouble
(opportunistically), instead of needing to use 'mapToDouble' to unbox.
This was a minor hotspot when called from AveragePriceUtil (used by the
burning man and BSQ dashboard views).
Use nonstrict bounds when filtering outliers from the provided trade
statistics list, since otherwise it will always remove the outermost two
inliers from the list. This is because the dependent call to
'InlierUtil.findInlierRange' returns the min & max inlier values.
Use a Map to speed up 'PaymentMethod.getPaymentMethod', called from
'isValid', instead of scanning the payment method list every invocation.
Make the list immutable to ensure the map never goes stale, which is OK
since no code modified it outside PaymentMethod's static initialisation.
Also speed up the global accessor 'TradeLimits.getMaxTradeLimit', by
caching the DAO param value in a volatile field, cleared upon each new
block arrival.
Furthermore, speed up 'TradeLimits.getFirstMonthRiskBasedTradeLimit' by
simplifying the rounding logic to avoid a pass through the (rather slow)
BigDecimal type.
Short circuit the exception control flow used in the method
'TradeStatistics3.getPaymentMethodId', which occurs whenever the payment
method code is stored directly in the 'paymentMethod' field instead of
first being converted into a numeric string. This occurs if the method
is unrecognised as it is not in listed into 'PaymentMethodWrapper' enum.
This fixes an unnecessary slowdown of 'TradeStatistics3.isValid', which
calls the above, when scanning the list of BSQ trade statistics in
AveragePriceUtil and elsewhere, due to the fact that the 'BSQ_SWAP'
payment method has been missed out of the above enum.
Also add a (presently disabled) unit test to prevent any future payment
methods from being missed out of the enum. (Should fix the missing BSQ
swaps issue in a separate PR to make sure that the seed nodes recognise
the new payment method code before anyone else.)
Make sure that none of the key extractor functions passed to
'Comparator.comparing(fn)' can return null, as this results in an NPE
when the corresponding column is sorted in the UI, but has blank entries
(such as the BTC received for a BSQ burn in the balance entries table).
(Make blanks appear smallest in magnitude using 'Comparator.nullsFirst'
or by defaulting to 0 instead of null, since the entries are initially
sorted biggest to smallest, pushing them to the bottom of the table.)
Also change the default sort type of the burned BSQ column, which should
be ASCENDING since the entries are negative.
We use a postfix to the header title and not a busy animation, as the busy animation is quite CPU intense.
Signed-off-by: HenrikJannsen <boilingfrog@gmx.com>
