本文整理汇总了C++中TxItems::begin方法的典型用法代码示例。如果您正苦于以下问题：C++ TxItems::begin方法的具体用法？C++ TxItems::begin怎么用？C++ TxItems::begin使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类TxItems的用法示例。
在下文中一共展示了TxItems::begin方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: ReorderTransactions
DBErrors CWalletDB::ReorderTransactions(CWallet* pwallet)
{
LOCK(pwallet->cs_wallet);
// Old wallets didn't have any defined order for transactions
// Probably a bad idea to change the output of this
// First: get all CWalletTx and CAccountingEntry into a sorted-by-time multimap.
typedef pair<CWalletTx*, CAccountingEntry*> TxPair;
typedef multimap<int64_t, TxPair > TxItems;
TxItems txByTime;
for (map<uint256, CWalletTx>::iterator it = pwallet->mapWallet.begin(); it != pwallet->mapWallet.end(); ++it)
{
CWalletTx* wtx = &((*it).second);
txByTime.insert(make_pair(wtx->nTimeReceived, TxPair(wtx, (CAccountingEntry*)0)));
}
list<CAccountingEntry> acentries;
ListAccountCreditDebit("", acentries);
for (CAccountingEntry& entry : acentries)
{
txByTime.insert(make_pair(entry.nTime, TxPair((CWalletTx*)0, &entry)));
}
int64_t& nOrderPosNext = pwallet->nOrderPosNext;
nOrderPosNext = 0;
std::vector<int64_t> nOrderPosOffsets;
for (TxItems::iterator it = txByTime.begin(); it != txByTime.end(); ++it)
{
CWalletTx *const pwtx = (*it).second.first;
CAccountingEntry *const pacentry = (*it).second.second;
int64_t& nOrderPos = (pwtx != 0) ? pwtx->nOrderPos : pacentry->nOrderPos;
if (nOrderPos == -1)
{
nOrderPos = nOrderPosNext++;
nOrderPosOffsets.push_back(nOrderPos);
if (pwtx)
{
if (!WriteTx(*pwtx))
return DB_LOAD_FAIL;
}
else
if (!WriteAccountingEntry(pacentry->nEntryNo, *pacentry))
return DB_LOAD_FAIL;
}
else
{
int64_t nOrderPosOff = 0;
for (const int64_t& nOffsetStart : nOrderPosOffsets)
{
if (nOrderPos >= nOffsetStart)
++nOrderPosOff;
}
nOrderPos += nOrderPosOff;
nOrderPosNext = std::max(nOrderPosNext, nOrderPos + 1);
if (!nOrderPosOff)
continue;
// Since we're changing the order, write it back
if (pwtx)
{
if (!WriteTx(*pwtx))
return DB_LOAD_FAIL;
}
else
if (!WriteAccountingEntry(pacentry->nEntryNo, *pacentry))
return DB_LOAD_FAIL;
}
}
WriteOrderPosNext(nOrderPosNext);
return DB_LOAD_OK;
}