From 1823d70b21f9bd2b226608d9737672a85bc30162 Mon Sep 17 00:00:00 2001
From: tequ <git@tequ.dev>
Date: Tue, 27 Jan 2026 10:34:15 +0900
Subject: [PATCH] refactor Oracle Reserve calculation

---
 src/xrpld/app/tx/detail/SetOracle.cpp           | 2 +-
 src/xrpld/app/tx/detail/SetOracle.h             | 3 +++
 src/xrpld/app/tx/detail/SponsorshipTransfer.cpp | 4 +++-
 3 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/src/xrpld/app/tx/detail/SetOracle.cpp b/src/xrpld/app/tx/detail/SetOracle.cpp
index 96ffca0ee0..a6f82afbe7 100644
--- a/src/xrpld/app/tx/detail/SetOracle.cpp
+++ b/src/xrpld/app/tx/detail/SetOracle.cpp
@@ -40,7 +40,7 @@ SetOracle::preflight(PreflightContext const& ctx)
 }
 
 uint32_t
-calculateOracleReserve(std::size_t count)
+SetOracle::calculateOracleReserve(std::size_t count)
 {
     return count > 5 ? 2 : 1;
 }
diff --git a/src/xrpld/app/tx/detail/SetOracle.h b/src/xrpld/app/tx/detail/SetOracle.h
index c1c9a3d3fb..ca27a76d01 100644
--- a/src/xrpld/app/tx/detail/SetOracle.h
+++ b/src/xrpld/app/tx/detail/SetOracle.h
@@ -23,6 +23,9 @@ public:
     {
     }
 
+    static uint32_t
+    calculateOracleReserve(std::size_t count);
+
     static NotTEC
     preflight(PreflightContext const& ctx);
 
diff --git a/src/xrpld/app/tx/detail/SponsorshipTransfer.cpp b/src/xrpld/app/tx/detail/SponsorshipTransfer.cpp
index cb68fa0a5a..4044291c55 100644
--- a/src/xrpld/app/tx/detail/SponsorshipTransfer.cpp
+++ b/src/xrpld/app/tx/detail/SponsorshipTransfer.cpp
@@ -1,3 +1,4 @@
+#include <xrpld/app/tx/detail/SetOracle.h>
 #include <xrpld/app/tx/detail/SponsorshipTransfer.h>
 
 #include <xrpl/ledger/ReadView.h>
@@ -120,7 +121,8 @@ getLedgerEntryOwnerCount(T const& sle)
     switch (sle->getType())
     {
         case ltORACLE: {
-            return sle->getFieldArray(sfPriceDataSeries).size() > 5 ? 2 : 1;
+            return SetOracle::calculateOracleReserve(
+                sle->getFieldArray(sfPriceDataSeries).size());
         }
         default:
             return 1;