/// <summary>
/// 重写获取当前事物所使用的数据连接的函数
/// </summary>
/// <param name="ts">事物对象</param>
/// <returns>数据连接</returns>
protected override DbConnection OnGetConnectionWithTransaction(Transaction ts)
{
Connections connections = null;
GraphWithTransaction graph = AutoEnlistDbContext.GraphWithTx;
lock (graph)
{
// current transaction exists only in current HttpContext or Thread
if (graph.TryGetValue(ts, out connections) == false)
{
connections = new Connections();
graph.Add(Transaction.Current, connections);
}
}
ReferenceConnection rConnection = null;
lock (connections)
{
if (connections.TryGetValue(this.Name, out rConnection) == false)
{
rConnection = new ReferenceConnection(this.Name, DbConnectionManager.GetConnection(this.Name));
IsConnectionCreator = true;
connections.Add(this.Name, rConnection);
}
else
{
rConnection.ReferenceCount++;
}
}
return(rConnection.Connection);
}
/// <summary>
/// 根据名称得到当前引用的连接
/// </summary>
/// <param name="connName">数据库连接名称</param>
/// <returns>连接对象</returns>
protected ReferenceConnection GetRefConnectionWithoutTx(string connName)
{
ReferenceConnection refConnection = null;
GraphWithoutTransaction connections = GraphWithoutTx;
lock (connections)
{
if (connections.TryGetValue(connName, out refConnection) == false)
{
DbConnection connection = DbConnectionManager.GetConnection(connName);
this.isConnectionCreator = true;
refConnection = new ReferenceConnection(connName, connection);
connections.Add(connName, refConnection);
}
else
{
refConnection.ReferenceCount++;
}
}
return(refConnection);
}