From 6b89a0c5ea7a63e1b410abe9963f20ce83763798 Mon Sep 17 00:00:00 2001
From: Craig Raw <craigraw@gmail.com>
Date: Thu, 12 Sep 2024 14:29:21 +0200
Subject: [PATCH] improve performance of wallet transactions update

---
 src/main/java/com/sparrowwallet/drongo/wallet/Wallet.java | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/main/java/com/sparrowwallet/drongo/wallet/Wallet.java b/src/main/java/com/sparrowwallet/drongo/wallet/Wallet.java
index d662f63..7b28c9e 100644
--- a/src/main/java/com/sparrowwallet/drongo/wallet/Wallet.java
+++ b/src/main/java/com/sparrowwallet/drongo/wallet/Wallet.java
@@ -421,8 +421,10 @@ public class Wallet extends Persistable implements Comparable<Wallet> {
     public synchronized void updateTransactions(Map<Sha256Hash, BlockTransaction> updatedTransactions) {
         for(BlockTransaction blockTx : updatedTransactions.values()) {
             if(!transactions.isEmpty()) {
-                Optional<String> optionalLabel = transactions.values().stream().filter(oldBlTx -> oldBlTx.getHash().equals(blockTx.getHash())).map(BlockTransaction::getLabel).filter(Objects::nonNull).findFirst();
-                optionalLabel.ifPresent(blockTx::setLabel);
+                BlockTransaction oldTx = transactions.get(blockTx.getHash());
+                if(oldTx != null && oldTx.getLabel() != null) {
+                    blockTx.setLabel(oldTx.getLabel());
+                }
             }
 
             if(!detachedLabels.isEmpty()) {