Classe Task
Defines an abstract class that implements the methods and properties common to all tasks in Integration Services.
Espace de noms : Microsoft.SqlServer.Dts.Runtime
Assembly : Microsoft.SqlServer.ManagedDTS (dans Microsoft.SqlServer.ManagedDTS.dll)
Syntaxe
'Déclaration
Public MustInherit Class Task _
Inherits DtsObject _
Implements IDTSManagedTask
'Utilisation
Dim instance As Task
public abstract class Task : DtsObject,
IDTSManagedTask
public ref class Task abstract : public DtsObject,
IDTSManagedTask
[<AbstractClassAttribute>]
type Task =
class
inherit DtsObject
interface IDTSManagedTask
end
public abstract class Task extends DtsObject implements IDTSManagedTask
Notes
A package consists of one or more tasks. These tasks define units of work that are performed as part of copying and transforming data, communicating with other processes, and performing database management functions.
Inherits from DtsObject and IDTSManagedTask.
Exemples
The following code example is a very simple task implementation for a custom task that inherits from Task.
using System;
using Microsoft.SqlServer.Dts.Runtime;
class MyTask : Task
{
private int m_value = 123;
public override DTExecResult Execute(Connections connections,
Variables variables, IDTSEvents events,
IDTSLogging log, int lastExecResult, DtsTransaction txn)
{
return m_value;
}
}
Imports System
Imports Microsoft.SqlServer.Dts.Runtime
Class MyTask
Inherits Task
Private m_value As Integer = 123
Public Overrides DTExecResult Property connections,() As Execute(Connections
End Property
Variables variables, IDTSEvents events,
IDTSLogging log,int Function txn)() As lastExecResult,DtsTransaction
Return m_value
End Function
End Class
Hiérarchie d'héritage
System. . :: . .Object
Microsoft.SqlServer.Dts.Runtime. . :: . .DtsObject
Microsoft.SqlServer.Dts.Runtime..::..Task
Microsoft.DataTransformationServices.Tasks.DTSProcessingTask. . :: . .ASTaskBase
Microsoft.SqlServer.Dts.Tasks.ActiveXScriptTask. . :: . .ActiveXScriptTask
Microsoft.SqlServer.Dts.Tasks.BulkInsertTask. . :: . .BulkInsertTask
Microsoft.SqlServer.Dts.Tasks.DataProfilingTask. . :: . .DataProfilingTask
Microsoft.SqlServer.Dts.Tasks.DMQueryTask. . :: . .DMQueryTask
Microsoft.SqlServer.Dts.Tasks.Exec80PackageTask. . :: . .Exec80PackageTask
Microsoft.SqlServer.Dts.Tasks.ExecuteProcess. . :: . .ExecuteProcess
Microsoft.SqlServer.Dts.Tasks.ExecuteSQLTask. . :: . .ExecuteSQLTask
Microsoft.SqlServer.Dts.Tasks.FileSystemTask. . :: . .FileSystemTask
Microsoft.SqlServer.Dts.Tasks.FtpTask. . :: . .FtpTask
Microsoft.SqlServer.Dts.Tasks.MessageQueueTask. . :: . .MessageQueueTask
Microsoft.SqlServer.Dts.Tasks.ScriptTask. . :: . .ScriptTask
Microsoft.SqlServer.Dts.Tasks.SendMailTask. . :: . .SendMailTask
Microsoft.SqlServer.Dts.Tasks.TransferDatabaseTask. . :: . .TransferDatabaseTask
Microsoft.SqlServer.Dts.Tasks.TransferErrorMessagesTask. . :: . .TransferErrorMessagesTask
Microsoft.SqlServer.Dts.Tasks.TransferJobsTask. . :: . .TransferJobsTask
Microsoft.SqlServer.Dts.Tasks.TransferLoginsTask. . :: . .TransferLoginsTask
Microsoft.SqlServer.Dts.Tasks.TransferSqlServerObjectsTask. . :: . .TransferSqlServerObjectsTask
Microsoft.SqlServer.Dts.Tasks.TransferStoredProceduresTask. . :: . .TransferStoredProceduresTask
Microsoft.SqlServer.Dts.Tasks.WebServiceTask. . :: . .WebServiceTask
Microsoft.SqlServer.Dts.Tasks.WmiDataReaderTask. . :: . .WmiDataReaderTask
Microsoft.SqlServer.Dts.Tasks.WmiEventWatcherTask. . :: . .WmiEventWatcherTask
Microsoft.SqlServer.Dts.Tasks.XMLTask. . :: . .XMLTask
Sécurité des threads
Tous les membres publics static (Shared dans Visual Basic) de ce type sont thread-safe. Il n'est pas garanti que les membres d'instance soient thread-safe.