public DbRootAddress PublishToSession(DbSession destSession)
{
// Refresh the transaction log with a cleared 'no base root' version.
// This operation sets up the transaction log appropriately so that the
// 'commit' process of future transactions will understand that this
// version is not an iteration of previous versions.
WriteClearedTransactionLog();
// The database client,
NetworkClient dbClient = session.Client;
// Flush the transaction to the network
DataAddress toPublish = dbClient.FlushTransaction(transaction);
try {
DataAddress published = dbClient.Commit(destSession.PathName, toPublish);
// Return the root in the destionation session,
return(new DbRootAddress(destSession, published));
} catch (CommitFaultException e) {
// This shouldn't be thrown,
throw new ApplicationException("Unexpected Commit Fault", e);
}
}
public DbRootAddress Commit()
{
CheckValid();
try {
// Update transaction information on the tables that were modified during
// this transaction.
lock (tableMap) {
foreach (KeyValuePair <string, DbTable> pair in tableMap)
{
string tableName = pair.Key;
DbTable table = pair.Value;
if (table.Modified)
{
// Log this modification,
// If there was a structural change to the table we log as a TS
// event
if (table.HasStructuralChanges)
{
log.Add("TS" + tableName);
}
// Otherwise we log as a TM event (rows or columns were deleted).
else
{
log.Add("TM" + tableName);
}
// Write out the table log
table.PrepareForCommit();
}
}
}
// Process the transaction log and write it out to a DataFile for the
// path function processor to handle,
// If there are changes to commit,
if (log.Count > 0)
{
// Refresh the transaction log with the entries stored in 'log'
RefreshTransactionLog();
// The database client,
NetworkClient dbClient = session.Client;
// Flush the transaction to the network
DataAddress proposal = dbClient.FlushTransaction(transaction);
// Perform the commit operation,
return(new DbRootAddress(session, dbClient.Commit(session.PathName, proposal)));
}
else
{
// No changes, so return base root
return(new DbRootAddress(session, baseRoot));
}
}
// Make sure transaction is invalidated
finally {
// Invalidate this transaction
Invalidate();
}
}
