Peerplays_Blockchain/peerplays_migrated
1
0
Fork 0
Code Issues 35 Pull requests 4 Projects Releases 20 Packages Wiki Activity Actions

undo_database.cpp: Handle unimplemented upd+del case

Browse source
This commit is contained in:
theoreticalbts 2015-12-09 17:26:52 -05:00
parent 44db4760a1
commit c2943ee3bb
1 changed files with 12 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

12
libraries/db/undo_database.cpp
View file

@ -183,6 +183,8 @@ void undo_database::merge()
// upd(was=X) + upd(was=Y) -> upd(was=X), type A
continue;
}
// del+upd -> N/A
assert( prev_state.removed.find(obj.second->id) == prev_state.removed.end() );
// nop+upd(was=Y) -> upd(was=Y), type B
prev_state.old_values[obj.second->id] = std::move(obj.second);
}
@ -217,6 +219,16 @@ void undo_database::merge()
prev_state.new_ids.erase(obj.second->id);
continue;
}
auto it = prev_state.old_values.find(obj.second->id);
if( it != prev_state.old_values.end() )
{
// upd(was=X) + del(was=Y) -> del(was=X)
prev_state.removed[obj.second->id] = std::move(it->second);
prev_state.old_values.erase(obj.second->id);
continue;
}
// del + del -> N/A
assert( prev_state.removed.find( obj.second->id ) == prev_state.removed.end() );
// nop + del(was=Y) -> del(was=Y)
prev_state.removed[obj.second->id] = std::move(obj.second);
}