public override Value GetTag(string tag, bool inherit = true)
{
Value value = base.GetTag(tag, inherit);
if (!Value.IsNullOrEmpty(value))
{
return(value);
}
if (inherit && Xact != null)
{
return(Xact.GetTag(tag));
}
return(Value.Empty);
}
public bool AddXact(Xact xact)
{
if (xact == null)
{
throw new ArgumentNullException("xact");
}
xact.Journal = this;
if (!xact.FinalizeXact())
{
xact.Journal = null;
return(false);
}
ExtendXact(xact);
CheckAllMetadata(xact);
foreach (Post post in xact.Posts)
{
Post.ExtendPost(post, this);
CheckAllMetadata(post);
}
// If a transaction with this UUID has already been seen, simply do
// not add this one to the journal. However, all automated checks
// will have been performed by extend_xact, so asserts can still be
// applied to it.
Value refVal = xact.GetTag("UUID");
if (!Value.IsNullOrEmpty(refVal))
{
string uuid = refVal.AsString;
if (ChecksumMapping.ContainsKey(uuid))
{
// This UUID has been seen before; apply any postings which the
// earlier version may have deferred.
foreach (Post post in xact.Posts)
{
Account acct = post.Account;
IEnumerable <Post> deferredPosts = acct.GetDeferredPosts(uuid);
if (deferredPosts != null)
{
foreach (Post rpost in deferredPosts)
{
if (acct == rpost.Account)
{
acct.AddPost(rpost);
}
}
acct.DeleteDeferredPosts(uuid);
}
}
Xact other = ChecksumMapping[uuid];
// Copy the two lists of postings (which should be relatively
// short), and make sure that the intersection is the empty set
// (i.e., that they are the same list).
IEnumerable <Post> thisPosts = xact.Posts.OrderBy(p => p.Account.FullName);
IEnumerable <Post> otherPosts = other.Posts.OrderBy(p => p.Account.FullName);
bool match = !thisPosts.Except(otherPosts, EquivalentPostingComparer.Current).Any();
if (!match || thisPosts.Count() != otherPosts.Count())
{
ErrorContext.Current.AddErrorContext("While comparing this previously seen transaction:");
ErrorContext.Current.AddErrorContext(ErrorContext.SourceContext(other.Pos.PathName, other.Pos.BegPos, other.Pos.EndPos, "> "));
ErrorContext.Current.AddErrorContext("to this later transaction:");
ErrorContext.Current.AddErrorContext(ErrorContext.SourceContext(xact.Pos.PathName, xact.Pos.BegPos, xact.Pos.EndPos, "> "));
throw new RuntimeError(RuntimeError.ErrorMessageTransactionsWithTheSameUUIDmustHaveEquivalentPostings);
}
xact.Journal = null;
return(false);
}
else
{
ChecksumMapping.Add(uuid, xact);
}
}
Xacts.Add(xact);
return(true);
}