private void ReadVisibleTables()
{
lock (commitLock) {
var tables = StateStore.GetVisibleList();
// For each visible table
foreach (var resource in tables)
{
var tableId = resource.TableId;
var sourceName = resource.SourceName;
// TODO: add a table source type?
// Load the master table from the resource information
var source = LoadTableSource(tableId, sourceName);
if (source == null)
{
throw new InvalidOperationException(String.Format("Table {0} was not found.", sourceName));
}
source.Open();
tableSources.Add(tableId, source);
}
}
}
public IEnumerable <ITableSource> GetTableSources()
{
lock (commitLock) {
var list = StateStore.GetVisibleList();
return(list.Select(x => GetTableSource(x.TableId)));
}
}
internal ITransaction CreateTransaction(IsolationLevel isolation)
{
var thisCommittedTables = new List <TableSource>();
// Don't let a commit happen while we are looking at this.
lock (commitLock) {
int thisCommitId = CurrentCommitId;
var committedTableList = StateStore.GetVisibleList();
thisCommittedTables.AddRange(committedTableList.Select(resource => GetTableSource(resource.TableId)));
// Create a set of IIndexSet for all the tables in this transaction.
var indexInfo = (thisCommittedTables.Select(mtable => mtable.CreateIndexSet())).ToList();
// Create a context for the transaction to handle the isolated storage of variables and services
var context = DatabaseContext.CreateTransactionContext();
// Create the transaction and record it in the open transactions list.
return(new Transaction(context, Database, thisCommitId, isolation, thisCommittedTables, indexInfo));
}
}
