From 158f770164f8c0b03d9a4dd74832bed01c303bd9 Mon Sep 17 00:00:00 2001
From: ohager <oliver@devbutze.com>
Date: Sun, 22 Dec 2024 19:56:16 -0300
Subject: [PATCH] fix: reverted getTransactions to 3.8.2 version for
 performance reasons (#849)

---
 src/brs/db/sql/SqlBlockchainStore.java | 38 +++++++++++++-------------
 1 file changed, 19 insertions(+), 19 deletions(-)

diff --git a/src/brs/db/sql/SqlBlockchainStore.java b/src/brs/db/sql/SqlBlockchainStore.java
index 7c26a3f84..40e791a1d 100644
--- a/src/brs/db/sql/SqlBlockchainStore.java
+++ b/src/brs/db/sql/SqlBlockchainStore.java
@@ -152,11 +152,11 @@ public long getAtBurnTotal() {
 
   @Override
   public Collection<Transaction> getTransactions(Account account, int numberOfConfirmations, byte type, byte subtype, int blockTimestamp, int from, int to, boolean includeIndirectIncoming) {
-
+    // note to devs: this method does not scale. as of 12, 2024 some account suffer long loading times here. some unsuccessful trials to refactor the queries failed. So, touch this method only
+    // if you are really understand what you are doing.
     int height = getHeightForNumberOfConfirmations(numberOfConfirmations);
     return Db.useDSLContext(ctx -> {
       ArrayList<Condition> conditions = new ArrayList<>();
-
       if (blockTimestamp > 0) {
         conditions.add(TRANSACTION.BLOCK_TIMESTAMP.ge(blockTimestamp));
       }
@@ -170,26 +170,26 @@ public Collection<Transaction> getTransactions(Account account, int numberOfConf
         conditions.add(TRANSACTION.HEIGHT.le(height));
       }
 
-      Condition accountCondition = DSL.trueCondition();
-      if (account != null) {
-        accountCondition = TRANSACTION.RECIPIENT_ID.eq(account.getId())
-          .and(TRANSACTION.SENDER_ID.ne(account.getId()))
-          .or(TRANSACTION.SENDER_ID.eq(account.getId()));
+      SelectOrderByStep<TransactionRecord> select = ctx.selectFrom(TRANSACTION).where(conditions).and(
+        account == null ? TRANSACTION.RECIPIENT_ID.isNull() :
+          TRANSACTION.RECIPIENT_ID.eq(account.getId()).and(
+            TRANSACTION.SENDER_ID.ne(account.getId())
+          )
+      ).unionAll(
+        account == null ? null :
+          ctx.selectFrom(TRANSACTION).where(conditions).and(
+            TRANSACTION.SENDER_ID.eq(account.getId())
+          )
+      );
 
-        if (includeIndirectIncoming) {
-          accountCondition = accountCondition.or(
-            TRANSACTION.ID.in(
-              DSL.select(INDIRECT_INCOMING.TRANSACTION_ID)
-                .from(INDIRECT_INCOMING)
-                .where(INDIRECT_INCOMING.ACCOUNT_ID.eq(account.getId()))
-            )
-          );
-        }
+      if (includeIndirectIncoming) {
+        select = select.unionAll(ctx.selectFrom(TRANSACTION)
+          .where(conditions)
+          .and(TRANSACTION.ID.in(ctx.select(INDIRECT_INCOMING.TRANSACTION_ID).from(INDIRECT_INCOMING)
+            .where(INDIRECT_INCOMING.ACCOUNT_ID.eq(account.getId())))));
       }
 
-      SelectQuery<TransactionRecord> selectQuery = ctx.selectFrom(TRANSACTION)
-        .where(conditions)
-        .and(accountCondition)
+      SelectQuery<TransactionRecord> selectQuery = select
         .orderBy(TRANSACTION.BLOCK_TIMESTAMP.desc(), TRANSACTION.ID.desc())
         .getQuery();