internal void CloseFully()
{
if (settings.Pooling && driver.IsOpen)
{
// if we are in a transaction, roll it back
if (driver.HasStatus(ServerStatusFlags.InTransaction))
{
MySqlTransaction t = new MySqlTransaction(this, IsolationLevel.Unspecified);
t.Rollback();
}
MySqlPoolManager.ReleaseConnection(driver);
}
else
{
driver.Close();
}
driver = null;
}
/// <summary>
/// Removes a connection from the in use pool. The only situations where this method
/// would be called are when a connection that is in use gets some type of fatal exception
/// or when the connection is being returned to the pool and it's too old to be
/// returned.
/// </summary>
/// <param name="driver"></param>
public void RemoveConnection(Driver driver)
{
lock ((inUsePool as ICollection).SyncRoot)
{
if (inUsePool.Contains(driver))
{
inUsePool.Remove(driver);
Interlocked.Increment(ref available);
autoEvent.Set();
}
}
// if we are being cleared and we are out of connections then have
// the manager destroy us.
if (beingCleared && NumConnections == 0)
{
MySqlPoolManager.RemoveClearedPool(this);
}
}
/// <include file='docs/MySqlConnection.xml' path='docs/Open/*'/>
public override void Open()
{
if (State == ConnectionState.Open)
{
throw new InvalidOperationException(ResourceStrings.ConnectionAlreadyOpen);
}
SetState(ConnectionState.Connecting, true);
try
{
if (settings.Pooling)
{
MySqlPool pool = MySqlPoolManager.GetPool(settings);
if (driver == null || !driver.IsOpen)
{
driver = pool.GetConnection();
}
}
else
{
if (driver == null || !driver.IsOpen)
{
driver = Driver.Create(settings);
}
}
}
catch (Exception)
{
SetState(ConnectionState.Closed, true);
throw;
}
SetState(ConnectionState.Open, false);
driver.Configure(this);
if (settings.Database != null && settings.Database != String.Empty)
{
ChangeDatabase(settings.Database);
}
hasBeenOpen = true;
SetState(ConnectionState.Open, true);
}
protected virtual void Dispose(bool disposing)
{
// Avoid cyclic calls to Dispose.
if (disposeInProgress)
{
return;
}
disposeInProgress = true;
try
{
ResetTimeout(1000);
if (disposing)
{
handler.Close(isOpen);
}
// if we are pooling, then release ourselves
if (connectionString.Pooling)
{
MySqlPoolManager.RemoveConnection(this);
}
}
catch (Exception)
{
if (disposing)
{
throw;
}
}
finally
{
reader = null;
isOpen = false;
disposeInProgress = false;
}
}
/// <include file='docs/MySqlConnection.xml' path='docs/ClearAllPools/*'/>
public static void ClearAllPools()
{
MySqlPoolManager.ClearAllPools();
}
/*
* // Due to the DNXCore replacement for DataReader.GetSchemaTable()
* // haven't implemented (refer to https://github.com/dotnet/corefx/issues/3423)
* // this method should be remove till GetSchema is back.
* //
*
* /// <summary>
* /// Returns schema information for the data source of this <see cref="DbConnection"/>.
* /// </summary>
* /// <returns>A <see cref="DataTable"/> that contains schema information. </returns>
* public override DataTable GetSchema()
* {
* return GetSchema(null);
* }
*
* /// <summary>
* /// Returns schema information for the data source of this
* /// <see cref="DbConnection"/> using the specified string for the schema name.
* /// </summary>
* /// <param name="collectionName">Specifies the name of the schema to return. </param>
* /// <returns>A <see cref="DataTable"/> that contains schema information. </returns>
* public override DataTable GetSchema(string collectionName)
* {
* if (collectionName == null)
* collectionName = SchemaProvider.MetaCollection;
*
* return GetSchema(collectionName, null);
* }
*
* /// <summary>
* /// Returns schema information for the data source of this <see cref="DbConnection"/>
* /// using the specified string for the schema name and the specified string array
* /// for the restriction values.
* /// </summary>
* /// <param name="collectionName">Specifies the name of the schema to return.</param>
* /// <param name="restrictionValues">Specifies a set of restriction values for the requested schema.</param>
* /// <returns>A <see cref="DataTable"/> that contains schema information.</returns>
* public override DataTable GetSchema(string collectionName, string[] restrictionValues)
* {
* if (collectionName == null)
* collectionName = SchemaProvider.MetaCollection;
*
* string[] restrictions = schemaProvider.CleanRestrictions(restrictionValues);
* DataTable dt = schemaProvider.GetSchema(collectionName, restrictions);
* return dt;
* }
*/
/// <include file='docs/MySqlConnection.xml' path='docs/ClearPool/*'/>
public static void ClearPool(MySqlConnection connection)
{
MySqlPoolManager.ClearPool(connection.Settings);
}
/// <include file='docs/MySqlConnection.xml' path='docs/Open/*'/>
public override void Open()
{
if (State == ConnectionState.Open)
{
throw new InvalidOperationException(Resources.ConnectionAlreadyOpen);
}
SetState(ConnectionState.Connecting, true);
#if !CF
// if we are auto enlisting in a current transaction, then we will be
// treating the connection as pooled
if (settings.AutoEnlist && Transaction.Current != null)
{
driver = DriverTransactionManager.GetDriverInTransaction(Transaction.Current);
if (driver != null &&
(driver.IsInActiveUse ||
!driver.Settings.EquivalentTo(this.Settings)))
{
throw new NotSupportedException(Resources.MultipleConnectionsInTransactionNotSupported);
}
}
#endif
try
{
if (settings.Pooling)
{
MySqlPool pool = MySqlPoolManager.GetPool(settings);
if (driver == null || !driver.IsOpen)
{
driver = pool.GetConnection();
}
procedureCache = pool.ProcedureCache;
}
else
{
if (driver == null || !driver.IsOpen)
{
driver = Driver.Create(settings);
}
procedureCache = new ProcedureCache((int)settings.ProcedureCacheSize);
}
}
catch (Exception)
{
SetState(ConnectionState.Closed, true);
throw;
}
SetState(ConnectionState.Open, false);
driver.Configure(this);
if (settings.Database != null && settings.Database != String.Empty)
{
ChangeDatabase(settings.Database);
}
// setup our schema provider
schemaProvider = new ISSchemaProvider(this);
#if !CF
perfMonitor = new PerformanceMonitor(this);
#endif
// if we are opening up inside a current transaction, then autoenlist
// TODO: control this with a connection string option
#if !MONO && !CF
if (Transaction.Current != null && settings.AutoEnlist)
{
EnlistTransaction(Transaction.Current);
}
#endif
hasBeenOpen = true;
SetState(ConnectionState.Open, true);
}
