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[refactor] use lambda.

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gubatron 2016-01-14 17:07:49 -05:00
parent 088334014c
commit c899466ec4
1 changed files with 18 additions and 21 deletions
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39
core/src/main/java/io/bitsquare/btc/AddressBasedCoinSelector.java
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@ -49,27 +49,24 @@ class AddressBasedCoinSelector implements CoinSelector {
@VisibleForTesting @VisibleForTesting
static void sortOutputs(ArrayList<TransactionOutput> outputs) { static void sortOutputs(ArrayList<TransactionOutput> outputs) {
Collections.sort(outputs, new Comparator<TransactionOutput>() { Collections.sort(outputs, (a, b) -> {
@Override int depth1 = a.getParentTransactionDepthInBlocks();
public int compare(TransactionOutput a, TransactionOutput b) { int depth2 = b.getParentTransactionDepthInBlocks();
int depth1 = a.getParentTransactionDepthInBlocks(); Coin aValue = a.getValue();
int depth2 = b.getParentTransactionDepthInBlocks(); Coin bValue = b.getValue();
Coin aValue = a.getValue(); BigInteger aCoinDepth = BigInteger.valueOf(aValue.value).multiply(BigInteger.valueOf(depth1));
Coin bValue = b.getValue(); BigInteger bCoinDepth = BigInteger.valueOf(bValue.value).multiply(BigInteger.valueOf(depth2));
BigInteger aCoinDepth = BigInteger.valueOf(aValue.value).multiply(BigInteger.valueOf(depth1)); int c1 = bCoinDepth.compareTo(aCoinDepth);
BigInteger bCoinDepth = BigInteger.valueOf(bValue.value).multiply(BigInteger.valueOf(depth2)); if (c1 != 0) return c1;
int c1 = bCoinDepth.compareTo(aCoinDepth); // The "coin*days" destroyed are equal, sort by value alone to get the lowest transaction size.
if (c1 != 0) return c1; int c2 = bValue.compareTo(aValue);
// The "coin*days" destroyed are equal, sort by value alone to get the lowest transaction size. if (c2 != 0) return c2;
int c2 = bValue.compareTo(aValue); // They are entirely equivalent (possibly pending) so sort by hash to ensure a total ordering.
if (c2 != 0) return c2; checkNotNull(a.getParentTransactionHash(), "a.getParentTransactionHash() must not be null");
// They are entirely equivalent (possibly pending) so sort by hash to ensure a total ordering. checkNotNull(b.getParentTransactionHash(), "b.getParentTransactionHash() must not be null");
checkNotNull(a.getParentTransactionHash(), "a.getParentTransactionHash() must not be null"); BigInteger aHash = a.getParentTransactionHash().toBigInteger();
checkNotNull(b.getParentTransactionHash(), "b.getParentTransactionHash() must not be null"); BigInteger bHash = b.getParentTransactionHash().toBigInteger();
BigInteger aHash = a.getParentTransactionHash().toBigInteger(); return aHash.compareTo(bHash);
BigInteger bHash = b.getParentTransactionHash().toBigInteger();
return aHash.compareTo(bHash);
}
}); });
} }