/// <summary>
/// Closes the connection.
/// </summary>
/// <param name="name">The name.</param>
public void CloseConnection(string name)
{
// retrieve connection
var cnxn = GetConnection(name);
if (cnxn == null)
{
return;
}
// check transaction
var trx = DbTransactionRegistry.RetrieveTransaction(cnxn);
if (trx != null)
{
trx.Rollback();
DbTransactionRegistry.RemoveTransaction(cnxn);
}
// close connection
if (cnxn.State == ConnectionState.Open)
{
cnxn.Close();
}
// remove connection
Connections.Remove(name);
}
/// <summary>
/// Gets the transaction.
/// </summary>
/// <param name="level">The level.</param>
/// <returns></returns>
public TransactionContext GetTransaction(IsolationLevel level)
{
if (Transaction == null)
{
Transaction = new TransactionContext();
foreach (DbConnection cnxn in Connections.Values)
{
if (cnxn == null)
{
continue;
}
DbTransactionRegistry.RegisterNewTransaction(cnxn, level);
}
}
return(Transaction);
}
/// <summary>
/// Finishes the transaction.
/// </summary>
/// <param name="commit">if set to <c>true</c> [commit].</param>
public void FinishTransaction(bool commit)
{
var trxn = Transaction;
if (trxn == null)
{
return;
}
foreach (var cxPair in Connections)
{
var cnxn = cxPair.Value;
if (cnxn == null)
{
continue;
}
var dbTrx = DbTransactionRegistry.RetrieveTransaction(cnxn);
if (dbTrx == null)
{
continue;
}
if (cnxn.State == ConnectionState.Open)
{
if (commit)
{
dbTrx.Commit();
}
else
{
dbTrx.Rollback();
}
}
DbTransactionRegistry.RemoveTransaction(cnxn);
}
Transaction = null;
}
/// <summary>
/// Gets the connection.
/// </summary>
/// <param name="name">The name.</param>
/// <returns></returns>
public DbConnection GetConnection(string name)
{
// get context
ConnectionManagerContext ctx = Context;
// check if already open
var cnxn = ctx.GetConnection(name);
if ((cnxn != null) && (cnxn.State == ConnectionState.Open))
{
return(cnxn);
}
// prepare connection info
cnxn = PerpareConnection(name);
// open connection
try
{
cnxn.Open();
// enroll in transaction
if (ctx.Transaction != null)
{
DbTransactionRegistry.RegisterNewTransaction(cnxn);
}
SetConnection(name, cnxn);
return(cnxn);
}
catch (Exception ex)
{
throw new DataException("Unable to connect to database", ex);
}
}