From 9c7722b7c5ce49130bd978b932f73b629ce5cebe Mon Sep 17 00:00:00 2001
From: Luke Dashjr <luke-jr+git@utopios.org>
Date: Sun, 27 May 2012 23:06:09 +0000
Subject: Store a fixed order of transactions (and accounting) in the wallet

For backward compatibility, new accounting data is stored after a \0 in the comment string.
This way, old versions and third-party software should load and store them, but all actual use (listtransactions, for example) ignores it.
---
 src/rpcwallet.cpp | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

(limited to 'src/rpcwallet.cpp')

diff --git a/src/rpcwallet.cpp b/src/rpcwallet.cpp
index 3b68105dd7..005a7766f1 100644
--- a/src/rpcwallet.cpp
+++ b/src/rpcwallet.cpp
@@ -542,6 +542,7 @@ Value movecmd(const Array& params, bool fHelp)
 
     // Debit
     CAccountingEntry debit;
+    debit.nOrderPos = pwalletMain->nOrderPosNext++;
     debit.strAccount = strFrom;
     debit.nCreditDebit = -nAmount;
     debit.nTime = nNow;
@@ -551,6 +552,7 @@ Value movecmd(const Array& params, bool fHelp)
 
     // Credit
     CAccountingEntry credit;
+    credit.nOrderPos = pwalletMain->nOrderPosNext++;
     credit.strAccount = strTo;
     credit.nCreditDebit = nAmount;
     credit.nTime = nNow;
@@ -984,27 +986,27 @@ Value listtransactions(const Array& params, bool fHelp)
     Array ret;
     CWalletDB walletdb(pwalletMain->strWalletFile);
 
-    // First: get all CWalletTx and CAccountingEntry into a sorted-by-time multimap.
+    // First: get all CWalletTx and CAccountingEntry into a sorted-by-order multimap.
     typedef pair<CWalletTx*, CAccountingEntry*> TxPair;
     typedef multimap<int64, TxPair > TxItems;
-    TxItems txByTime;
+    TxItems txOrdered;
 
     // Note: maintaining indices in the database of (account,time) --> txid and (account, time) --> acentry
     // would make this much faster for applications that do this a lot.
     for (map<uint256, CWalletTx>::iterator it = pwalletMain->mapWallet.begin(); it != pwalletMain->mapWallet.end(); ++it)
     {
         CWalletTx* wtx = &((*it).second);
-        txByTime.insert(make_pair(wtx->GetTxTime(), TxPair(wtx, (CAccountingEntry*)0)));
+        txOrdered.insert(make_pair(wtx->nOrderPos, TxPair(wtx, (CAccountingEntry*)0)));
     }
     list<CAccountingEntry> acentries;
     walletdb.ListAccountCreditDebit(strAccount, acentries);
     BOOST_FOREACH(CAccountingEntry& entry, acentries)
     {
-        txByTime.insert(make_pair(entry.nTime, TxPair((CWalletTx*)0, &entry)));
+        txOrdered.insert(make_pair(entry.nOrderPos, TxPair((CWalletTx*)0, &entry)));
     }
 
     // iterate backwards until we have nCount items to return:
-    for (TxItems::reverse_iterator it = txByTime.rbegin(); it != txByTime.rend(); ++it)
+    for (TxItems::reverse_iterator it = txOrdered.rbegin(); it != txOrdered.rend(); ++it)
     {
         CWalletTx *const pwtx = (*it).second.first;
         if (pwtx != 0)
-- 
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