缺少引用 OLEDB 连接类型的库 [英] Missing library to reference OLEDB connection types
问题描述
我从 SSIS 团队博客 来转换 OLEDB 连接类型,以便它可以被 AcquireConnection() 方法使用.现在我不确定为什么 Dts.Connections 部分不起作用.我不知道我必须添加的库才能使其工作.我几乎添加了最重要的,包括 Dts.RuntimeWrap.如果您需要有关该问题的更多信息,请告诉我.
I got the following piece of code from SSIS Team Blog to cast the OLEDB connection type so that it can be used by the AcquireConnection () method. Now I am not sure why the Dts.Connections part is not working. I dont know the library that I would have to add to make it work. I pretty much added the most important ones including the Dts.RuntimeWrap. Please let me know if you need more information on the question.
ConnectionManager cm = Dts.Connections["oledb"];
Microsoft.SqlServer.Dts.Runtime.Wrapper.IDTSConnectionManagerDatabaseParameters100 cmParams = cm.InnerObject as Microsoft.SqlServer.Dts.Runtime.Wrapper.IDTSConnectionManagerDatabaseParameters100;
OleDbConnection conn = cmParams.GetConnectionForSchema() as OleDbConnection;
编辑下面是这个组件的完整代码.
EDIT Below is the entire code for this component.
using System;
using System.Collections.Generic;
using System.Data;
using System.Data.SqlClient;
using Microsoft.SqlServer.Dts.Runtime;
using System.Data.OleDb;
using System.Data.Common;
using System.Linq;
using System.Configuration;
using System.Collections;
//using System.Data.OleDb;
namespace AOC.SqlServer.Dts.Tasks
{
[DtsTask(
DisplayName = "Custom Logging Task",
Description = "Writes logging info into a table")]
public class CustomLoggingTask : Task
{
private string _packageName;
private string _taskName;
private string _errorCode;
private string _errorDescription;
private string _machineName;
private double _packageDuration;
private string _connectionName;
private string _eventType;
private string _executionid;
private DateTime _handlerdatetime;
private string _uid;
public string ConnectionName
{
set
{
_connectionName = value;
}
get
{
return _connectionName;
}
}
public string Event
{
set
{
_eventType = value;
}
get
{
return _eventType;
}
}
public override DTSExecResult Validate(Connections connections, VariableDispenser variableDispenser, IDTSComponentEvents componentEvents, IDTSLogging log)
{
const string METHOD_NAME = "CustomLoggingTask-Validate";
try
{
if (string.IsNullOrEmpty(_eventType))
{
componentEvents.FireError(0, METHOD_NAME, "The event property must be specified", "", -1);
return DTSExecResult.Failure;
}
if (string.IsNullOrEmpty(_connectionName))
{
componentEvents.FireError(0, METHOD_NAME, "No connection has been specified", "", -1);
return DTSExecResult.Failure;
}
//SqlConnection connection = connections[_connectionName].AcquireConnection(null) as SqlConnection;
DbConnection connection = connections[_connectionName].AcquireConnection(null) as DbConnection;
ConnectionManager cm = Dts.Connections["oledb"];
Microsoft.SqlServer.Dts.Runtime.Wrapper.IDTSConnectionManagerDatabaseParameters100 cmParams = cm.InnerObject as Microsoft.SqlServer.Dts.Runtime.Wrapper.IDTSConnectionManagerDatabaseParameters100;
OleDbConnection conn = cmParams.GetConnectionForSchema() as OleDbConnection;
if (connection == null)
{
componentEvents.FireError(0, METHOD_NAME, "The connection is not a valid ADO.NET connection", "", -1);
return DTSExecResult.Failure;
}
if (!variableDispenser.Contains("System::SourceID"))
{
componentEvents.FireError(0, METHOD_NAME, "No System::SourceID variable available. This task can only be used in an Event Handler", "", -1);
return DTSExecResult.Failure;
}
return DTSExecResult.Success;
}
catch (Exception exc)
{
componentEvents.FireError(0, METHOD_NAME, "Validation Failed: " + exc.ToString(), "", -1);
return DTSExecResult.Failure;
}
}
public override DTSExecResult Execute(Connections connections, VariableDispenser variableDispenser, IDTSComponentEvents componentEvents, IDTSLogging log, object transaction)
{
try
{
string commandText =
@"INSERT INTO SSISLog (EventType, PackageName, TaskName, EventCode, EventDescription, PackageDuration, Host, ExecutionID, EventHandlerDateTime,UID)
VALUES (@EventType, @PackageName, @TaskName, @EventCode, @EventDescription, @PackageDuration, @Host, @Executionid, @handlerdatetime,@uid)";
ReadVariables(variableDispenser);
DbConnection connection = connections[_connectionName].AcquireConnection(transaction) as DbConnection;
//SqlConnection connection = (SqlConnection)connections[_connectionName].AcquireConnection(transaction);
DbCommand command = null;
//using (SqlCommand command = new SqlCommand())
if (connection is SqlConnection)
command = new SqlCommand();
else if (connection is OleDbConnection)
command = new OleDbCommand();
{
command.CommandText = commandText;
command.CommandType = CommandType.Text;
command.Connection = connection;
command.Parameters.Add(new SqlParameter("@EventType", _eventType));
command.Parameters.Add(new SqlParameter("@PackageName", _packageName));
command.Parameters.Add(new SqlParameter("@TaskName", _taskName));
command.Parameters.Add(new SqlParameter("@EventCode", _errorCode ?? string.Empty));
command.Parameters.Add(new SqlParameter("@EventDescription", _errorDescription ?? string.Empty));
command.Parameters.Add(new SqlParameter("@PackageDuration", _packageDuration));
command.Parameters.Add(new SqlParameter("@Host", _machineName));
command.Parameters.Add(new SqlParameter("@ExecutionID", _executionid));
command.Parameters.Add(new SqlParameter("@handlerdatetime", _handlerdatetime));
command.Parameters.Add(new SqlParameter("@uid", _uid));
command.ExecuteNonQuery();
}
connection.Close();
return DTSExecResult.Success;
}
catch (Exception exc)
{
componentEvents.FireError(0, "CustomLoggingTask-Execute", "Task Errored: " + exc.ToString(), "", -1);
return DTSExecResult.Failure;
}
}
private void ReadVariables(VariableDispenser variableDispenser)
{
variableDispenser.LockForRead("System::StartTime");
variableDispenser.LockForRead("System::PackageName");
variableDispenser.LockForRead("System::SourceName");
variableDispenser.LockForRead("System::MachineName");
variableDispenser.LockForRead("System::ExecutionInstanceGUID");
variableDispenser.LockForRead("System::EventHandlerStartTime");
variableDispenser.LockForRead("User::UID");
bool includesError = variableDispenser.Contains("System::ErrorCode");
if (includesError)
{
variableDispenser.LockForRead("System::ErrorCode");
variableDispenser.LockForRead("System::ErrorDescription");
}
Variables vars = null;
variableDispenser.GetVariables(ref vars);
DateTime startTime = (DateTime)vars["System::StartTime"].Value;
_packageDuration = DateTime.Now.Subtract(startTime).TotalSeconds;
_packageName = vars["System::PackageName"].Value.ToString();
_taskName = vars["System::SourceName"].Value.ToString();
_machineName = vars["System::MachineName"].Value.ToString();
_executionid = vars["System::ExecutionInstanceGUID"].Value.ToString();
_handlerdatetime = (DateTime)vars["System::EventHandlerStartTime"].Value;
_uid = vars["User::UID"].Value.ToString();
if (includesError)
{
_errorCode = vars["System::ErrorCode"].Value.ToString();
_errorDescription = vars["System::ErrorDescription"].Value.ToString();
}
// release the variable locks.
vars.Unlock();
// reset the dispenser
variableDispenser.Reset();
}
}
}
推荐答案
通过你发布的代码,我终于弄清楚你想要完成什么.
With the code you posted, I finally figured out what you were trying to accomplish.
这些是我为让它工作而做的事情:
These are the things I've done to get it to work:
A) 您收到的编译错误:
"Error 1 The type or namespace name 'Connections' does not exist in the namespace 'AOC.SqlServer.Dts' (are you missing an assembly reference?)"
仅仅是因为您尝试获取oledb连接管理器的方式:
is simply because the way you're trying to get the oledb connection manager:
ConnectionManager cm = Dts.Connections["oledb"];
Dts
对象是脚本任务组件中可用的工具.您应该将该行替换为:
The Dts
object is a facility available in the script task component. You should replace that line with:
ConnectionManager cm = connections["oledb"];
我在您的代码中看到您以这种方式访问 Connection Manager
,所以也许这是您刚刚留下的东西.
I've seen in your code that you access a Connection Manager
in this way, so maybe it was something you just left behind.
B) 要验证连接管理器是 ADO.NET 连接管理器还是 OLEDB 连接管理器,请更改代码的这一部分:
B) To validate if the connection manager is either an ADO.NET connection manager or an OLEDB one, changed this part of your code:
DbConnection connection = connections[_connectionName].AcquireConnection(null) as DbConnection;
ConnectionManager cm = Dts.Connections["oledb"];
Microsoft.SqlServer.Dts.Runtime.Wrapper.IDTSConnectionManagerDatabaseParameters100 cmParams = cm.InnerObject as Microsoft.SqlServer.Dts.Runtime.Wrapper.IDTSConnectionManagerDatabaseParameters100;
OleDbConnection conn = cmParams.GetConnectionForSchema() as OleDbConnection;
if (connection == null)
{
componentEvents.FireError(0, METHOD_NAME, "The connection is not a valid ADO.NET connection", "", -1);
return DTSExecResult.Failure;
}
首先在类级别添加一个私有变量来存储连接:
First, added a private variable at the class level to store the connection:
private DbConnection _connection;
然后,修改验证以检查连接是否为 ADO.NET,如果不是,则检查它是否为 OLEDB:
and then, modified the validation to check if the connection is ADO.NET, and in case it's not, to check if it's OLEDB:
_connection = connections[_connectionName].AcquireConnection(null) as DbConnection;
if (_connection == null)
{
ConnectionManager cm = connections[_connectionName];
Microsoft.SqlServer.Dts.Runtime.Wrapper.IDTSConnectionManagerDatabaseParameters100 cmParams = cm.InnerObject as Microsoft.SqlServer.Dts.Runtime.Wrapper.IDTSConnectionManagerDatabaseParameters100;
_connection = cmParams.GetConnectionForSchema() as OleDbConnection;
if (_connection == null)
{
componentEvents.FireError(0, METHOD_NAME, "The connection is not a valid ADO.NET or OLEDB connection", "", -1);
return DTSExecResult.Failure;
}
}
请注意,我将硬编码的 "oledb"
替换为 _connectionName
变量,并在 _connection
为 null 时修改了错误字符串案例.
Note that I replaced the hardcoded "oledb"
with the _connectionName
variable, and also modified the error string when _connection
is null in both cases.
C) 要使用 OLEDB 提供程序执行命令,必须进行以下更改:
C) To execute the command using an OLEDB provider were necesary the following changes:
- 使用新的
_connection
变量,其中包含先前检索到的连接. - 添加到命令中的参数必须是
OleDbParameter
,而不是SqlParameter
. - OLE DB .NET 提供程序 不支持命名参数.所以,
INSERT
语句命令中的VALUES
部分需要修改为使用?
.
- Use the new
_connection
variable, wich holds the previously retrieved connection. - The parameters added to the command must be
OleDbParameter
instead ofSqlParameter
. - The OLE DB .NET Provider does not support named parameters. So, the
VALUES
part in theINSERT
statement command needs to be modified to use?
.
D) 这是完整的工作代码:
D) This is the complete working code:
using System;
using System.Data;
using System.Data.Common;
using System.Data.OleDb;
using System.Data.SqlClient;
using Microsoft.SqlServer.Dts.Runtime;
//using System.Data.OleDb;
namespace AOC.SqlServer.Dts.Tasks
{
[DtsTask(
DisplayName = "Custom Logging Task",
Description = "Writes logging info into a table")]
public class CustomLoggingTask : Task
{
private string _packageName;
private string _taskName;
private string _errorCode;
private string _errorDescription;
private string _machineName;
private double _packageDuration;
private string _connectionName;
private string _eventType;
private string _executionid;
private DateTime _handlerdatetime;
private string _uid;
public string ConnectionName
{
set { _connectionName = value; }
get { return _connectionName; }
}
public string Event
{
set { _eventType = value; }
get { return _eventType; }
}
private DbConnection _connection;
public override DTSExecResult Validate(Connections connections, VariableDispenser variableDispenser, IDTSComponentEvents componentEvents, IDTSLogging log)
{
const string METHOD_NAME = "CustomLoggingTask-Validate";
try
{
if (string.IsNullOrEmpty(_eventType))
{
componentEvents.FireError(0, METHOD_NAME, "The event property must be specified", "", -1);
return DTSExecResult.Failure;
}
if (string.IsNullOrEmpty(_connectionName))
{
componentEvents.FireError(0, METHOD_NAME, "No connection has been specified", "", -1);
return DTSExecResult.Failure;
}
//SqlConnection connection = connections[_connectionName].AcquireConnection(null) as SqlConnection;
_connection = connections[_connectionName].AcquireConnection(null) as DbConnection;
if (_connection == null)
{
ConnectionManager cm = connections[_connectionName];
Microsoft.SqlServer.Dts.Runtime.Wrapper.IDTSConnectionManagerDatabaseParameters100 cmParams = cm.InnerObject as Microsoft.SqlServer.Dts.Runtime.Wrapper.IDTSConnectionManagerDatabaseParameters100;
_connection = cmParams.GetConnectionForSchema() as OleDbConnection;
if (_connection == null)
{
componentEvents.FireError(0, METHOD_NAME, "The connection is not a valid ADO.NET or OLEDB connection", "", -1);
return DTSExecResult.Failure;
}
}
if (!variableDispenser.Contains("System::SourceID"))
{
componentEvents.FireError(0, METHOD_NAME, "No System::SourceID variable available. This task can only be used in an Event Handler", "", -1);
return DTSExecResult.Failure;
}
return DTSExecResult.Success;
}
catch (Exception exc)
{
componentEvents.FireError(0, METHOD_NAME, "Validation Failed: " + exc.ToString(), "", -1);
return DTSExecResult.Failure;
}
}
public override DTSExecResult Execute(Connections connections, VariableDispenser variableDispenser, IDTSComponentEvents componentEvents, IDTSLogging log, object transaction)
{
try
{
string commandText = null;
ReadVariables(variableDispenser);
//DbConnection connection = connections[_connectionName].AcquireConnection(transaction) as DbConnection;
//SqlConnection connection = (SqlConnection)connections[_connectionName].AcquireConnection(transaction);
DbCommand command = null;
//using (SqlCommand command = new SqlCommand())
if (_connection is SqlConnection)
{
commandText = @"INSERT INTO SSISLog (EventType, PackageName, TaskName, EventCode, EventDescription, PackageDuration, Host, ExecutionID, EventHandlerDateTime,UID)
VALUES (@EventType, @PackageName, @TaskName, @EventCode, @EventDescription, @PackageDuration, @Host, @Executionid, @handlerdatetime,@uid)";
command = new SqlCommand();
command.Parameters.Add(new SqlParameter("@EventType", _eventType));
command.Parameters.Add(new SqlParameter("@PackageName", _packageName));
command.Parameters.Add(new SqlParameter("@TaskName", _taskName));
command.Parameters.Add(new SqlParameter("@EventCode", _errorCode ?? string.Empty));
command.Parameters.Add(new SqlParameter("@EventDescription", _errorDescription ?? string.Empty));
command.Parameters.Add(new SqlParameter("@PackageDuration", _packageDuration));
command.Parameters.Add(new SqlParameter("@Host", _machineName));
command.Parameters.Add(new SqlParameter("@ExecutionID", _executionid));
command.Parameters.Add(new SqlParameter("@handlerdatetime", _handlerdatetime));
command.Parameters.Add(new SqlParameter("@uid", _uid));
}
else if (_connection is OleDbConnection)
{
commandText = @"INSERT INTO SSISLog (EventType,PackageName,TaskName,EventCode,EventDescription,PackageDuration,Host,ExecutionID,EventHandlerDateTime,UID)
VALUES (?,?,?,?,?,?,?,?,?,?)";
command = new OleDbCommand();
command.Parameters.Add(new OleDbParameter("@EventType", _eventType));
command.Parameters.Add(new OleDbParameter("@PackageName", _packageName));
command.Parameters.Add(new OleDbParameter("@TaskName", _taskName));
command.Parameters.Add(new OleDbParameter("@EventCode", _errorCode ?? string.Empty));
command.Parameters.Add(new OleDbParameter("@EventDescription", _errorDescription ?? string.Empty));
command.Parameters.Add(new OleDbParameter("@PackageDuration", _packageDuration));
command.Parameters.Add(new OleDbParameter("@Host", _machineName));
command.Parameters.Add(new OleDbParameter("@ExecutionID", _executionid));
command.Parameters.Add(new OleDbParameter("@handlerdatetime", _handlerdatetime));
command.Parameters.Add(new OleDbParameter("@uid", _uid));
}
command.CommandText = commandText;
command.CommandType = CommandType.Text;
command.Connection = _connection;
command.ExecuteNonQuery();
_connection.Close();
return DTSExecResult.Success;
}
catch (Exception exc)
{
componentEvents.FireError(0, "CustomLoggingTask-Execute", "Task Errored: " + exc.ToString(), "", -1);
return DTSExecResult.Failure;
}
}
private void ReadVariables(VariableDispenser variableDispenser)
{
variableDispenser.LockForRead("System::StartTime");
variableDispenser.LockForRead("System::PackageName");
variableDispenser.LockForRead("System::SourceName");
variableDispenser.LockForRead("System::MachineName");
variableDispenser.LockForRead("System::ExecutionInstanceGUID");
variableDispenser.LockForRead("System::EventHandlerStartTime");
variableDispenser.LockForRead("User::UID");
bool includesError = variableDispenser.Contains("System::ErrorCode");
if (includesError)
{
variableDispenser.LockForRead("System::ErrorCode");
variableDispenser.LockForRead("System::ErrorDescription");
}
Variables vars = null;
variableDispenser.GetVariables(ref vars);
DateTime startTime = (DateTime)vars["System::StartTime"].Value;
_packageDuration = DateTime.Now.Subtract(startTime).TotalSeconds;
_packageName = vars["System::PackageName"].Value.ToString();
_taskName = vars["System::SourceName"].Value.ToString();
_machineName = vars["System::MachineName"].Value.ToString();
_executionid = vars["System::ExecutionInstanceGUID"].Value.ToString();
_handlerdatetime = (DateTime)vars["System::EventHandlerStartTime"].Value;
_uid = vars["User::UID"].Value.ToString();
if (includesError)
{
_errorCode = vars["System::ErrorCode"].Value.ToString();
_errorDescription = vars["System::ErrorDescription"].Value.ToString();
}
// release the variable locks.
vars.Unlock();
// reset the dispenser
variableDispenser.Reset();
}
}
}
为了记录,我给您留下了一些我发现对开发、部署和调试自定义组件有用的链接(但也许您已经浏览过它们!):
Just for the record, I leave you some links that I've found useful for develop, deploy and debug custom components (but maybe you have already went through them!):
http:///bennyaustin.wordpress.com/2009/06/30/steps-to-build-and-deploy-custom-ssis-components/
http://msdn.microsoft.com/en-us/library/ms403356%28v=sql.105%29.aspx
http://toddmcdermid.blogspot.com.ar/2009/06/converting-your-script-task-into-custom_22.html
干杯.
这篇关于缺少引用 OLEDB 连接类型的库的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!