internal TransactionWork(TableSourceComposite composite, Transaction transaction, IEnumerable<TableSource> selectedFromTables, IEnumerable<IMutableTable> touchedTables, TransactionRegistry journal)
{
Composite = composite;
Transaction = transaction;
SelectedFromTables = selectedFromTables;
// Get individual journals for updates made to tables in this
// transaction.
// The list TableEventRegistry
ChangedTables = touchedTables.Select(t => t.EventRegistry).Where(tableJournal => tableJournal.EventCount > 0);
// The list of tables created by this journal.
CreatedTables = journal.TablesCreated;
// Ths list of tables dropped by this journal.
DroppedTables = journal.TablesDropped;
// The list of tables that constraints were alter by this journal
ConstraintAlteredTables = journal.TablesConstraintAltered;
// Get the list of all database objects that were created in the
// transaction.
ObjectsCreated = transaction.Registry.ObjectsCreated;
// Get the list of all database objects that were dropped in the
// transaction.
ObjectsDropped = transaction.Registry.ObjectsDropped;
CommitId = transaction.CommitId;
}
internal void Rollback(Transaction transaction, IList<IMutableTable> touchedTables, TransactionRegistry journal)
{
// Go through the journal. Any rows added should be marked as deleted
// in the respective master table.
// Get individual journals for updates made to tables in this
// transaction.
// The list MasterTableJournal
var journalList = new List<TableEventRegistry>();
for (int i = 0; i < touchedTables.Count; ++i) {
var tableJournal = touchedTables[i].EventRegistry;
if (tableJournal.EventCount > 0) // Check the journal has entries.
journalList.Add(tableJournal);
}
var changedTables = journalList.ToArray();
lock (commitLock) {
try {
// For each change to each table,
foreach (var changeJournal in changedTables) {
// The table the changes were made to.
int tableId = changeJournal.TableId;
// Get the master table with this table id.
var master = GetTableSource(tableId);
// Commit the rollback on the table.
master.RollbackTransactionChange(changeJournal);
}
} finally {
// Notify the conglomerate that this transaction has closed.
CloseTransaction(transaction);
}
}
}
internal void Commit(Transaction transaction, IList<ITableSource> visibleTables,
IEnumerable<ITableSource> selectedFromTables,
IEnumerable<IMutableTable> touchedTables, TransactionRegistry journal, Action<TableCommitInfo> commitActions)
{
var state = new TransactionWork(this, transaction, selectedFromTables, touchedTables, journal);
// Exit early if nothing changed (this is a Read-only transaction)
if (!state.HasChanges) {
CloseTransaction(state.Transaction);
return;
}
lock (commitLock) {
var changedTablesList = state.Commit(objectStates, commitActions);
// Flush the journals up to the minimum commit id for all the tables
// that this transaction changed.
long minCommitId = Database.TransactionFactory.OpenTransactions.MinimumCommitId(null);
foreach (var master in changedTablesList) {
master.MergeChanges(minCommitId);
}
int nsjsz = objectStates.Count;
for (int i = nsjsz - 1; i >= 0; --i) {
var namespaceJournal = objectStates[i];
// Remove if the commit id for the journal is less than the minimum
// commit id
if (namespaceJournal.CommitId < minCommitId) {
objectStates.RemoveAt(i);
}
}
// Set a check point in the store system. This means that the
// persistance state is now stable.
StoreSystem.SetCheckPoint();
}
}
public TransactionTableContainer(Transaction transaction, TableInfo[] tableInfos)
{
this.transaction = transaction;
this.tableInfos = tableInfos;
}
public OldAndNewTableContainer(Transaction transaction)
{
this.transaction = transaction;
}
public ObjectManagersResolver(Transaction transaction)
{
this.transaction = transaction;
}