highperfocused/bitcoin
1
0
Fork 0
mirror of https://github.com/bitcoin/bitcoin.git synced 2025-11-12 06:58:57 +01:00
Code Issues Packages Projects Releases Wiki Activity

wallet: implement BerkeleyROBatch

Browse Source 
Implement ReadKey and HasKey of BerkeleyROBatch, and Next of BerkeleyROCursor.
Also adds the containers for records to BerkeleyRODatabase so that
BerkeleyROBatch will be able to access the records.
This commit is contained in:
Ava Chow
2024-01-02 16:35:22 -05:00
parent 756ff9b478
commit 0c8e728476
5 changed files with 52 additions and 10 deletions
Download Patch File Download Diff File Expand all files Collapse all files

31
src/wallet/migrate.cpp
View File

@@ -21,17 +21,42 @@ bool BerkeleyRODatabase::Backup(const std::string& dest) const
bool BerkeleyROBatch::ReadKey(DataStream&& key, DataStream& value)
{
return false;
SerializeData key_data{key.begin(), key.end()};
const auto it{m_database.m_records.find(key_data)};
if (it == m_database.m_records.end()) {
return false;
}
auto val = it->second;
value.clear();
value.write(Span(val));
return true;
}
bool BerkeleyROBatch::HasKey(DataStream&& key)
{
return false;
SerializeData key_data{key.begin(), key.end()};
return m_database.m_records.count(key_data) > 0;
}
BerkeleyROCursor::BerkeleyROCursor(const BerkeleyRODatabase& database, Span<const std::byte> prefix)
: m_database(database)
{
std::tie(m_cursor, m_cursor_end) = m_database.m_records.equal_range(BytePrefix{prefix});
}
DatabaseCursor::Status BerkeleyROCursor::Next(DataStream& ssKey, DataStream& ssValue)
{
return DatabaseCursor::Status::FAIL;
if (m_cursor == m_cursor_end) {
return DatabaseCursor::Status::DONE;
}
ssKey.write(Span(m_cursor->first));
ssValue.write(Span(m_cursor->second));
m_cursor++;
return DatabaseCursor::Status::MORE;
}
std::unique_ptr<DatabaseCursor> BerkeleyROBatch::GetNewPrefixCursor(Span<const std::byte> prefix)
{
return std::make_unique<BerkeleyROCursor>(m_database, prefix);
}
} // namespace wallet