我希望为我的数据库引擎添加事务支持,并提供抽象事务处理,直到使用数据库操作命令传入Guids。数据库引擎的运行类似于:
private static Database DB;
public static Dictionary<Guid,DBTransaction> Transactions = new ...()
public static void DoDBAction(string cmdstring,List<Parameter> parameters,Guid TransactionGuid)
{
DBCommand cmd = BuildCommand(cmdstring,parameters);
if(Transactions.ContainsKey(TransactionGuid))
cmd.Transaction = Transactions[TransactionGuid];
DB.ExecuteScalar(cmd);
}
public static BuildCommand(string cmd, List<Parameter> parameters)
{
// Create DB command from EntLib Database and assign parameters
}
public static Guid BeginTransaction()
{
// creates new Transaction adding it to "Transactions" and opens a new connection
}
public static Guid Commit(Guid g)
{
// Commits Transaction and removes it from "Transactions" and closes connection
}
public static Guid Rollback(Guid g)
{
// Rolls back Transaction and removes it from "Transactions" and closes connection
}
呼叫系统的运行类似于:
Guid g
try
{
g = DBEngine.BeginTransaction()
DBEngine.DoDBAction(cmdstring1, parameters,g)
// do some other stuff
DBEngine.DoDBAction(cmdstring2, parameters2,g)
// sit here and wait for a response from other item
DBEngine.DoDBAction(cmdstring3, parameters3,g)
DBEngine.Commit(g)
}
catch(Exception){ DBEngine.Rollback(g);}
这是否会干扰.NET连接池(除了意外打开连接之外)?
在提交或回滚之前,EntLib会保持连接打开吗?
答案 0 :(得分:0)
连接将保持打开状态,直到提交或回滚。这是保持连接打开的事务。
它不会影响连接池,除了事务持有的连接不会返回到连接池。
我建议您查看.net TransactionScope。这可能能够满足您的需求,而无需您编写任何此自定义代码。