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Classe ExpressionTask

  • Artigo

Contains the members used to configure and run an Expression task.

Hierarquia de herança

System.Object
  Microsoft.SqlServer.Dts.Runtime.DtsObject
    Microsoft.SqlServer.Dts.Runtime.Task
      Microsoft.SqlServer.Dts.Tasks.ExpressionTask.ExpressionTask

Namespace:  Microsoft.SqlServer.Dts.Tasks.ExpressionTask
Assembly:  Microsoft.SqlServer.ExpressionTask (em Microsoft.SqlServer.ExpressionTask.dll)

Sintaxe

'Declaração
<GuidAttribute("2EE7D9A9-DA39-4F6F-A1E4-804F1FBC544C")> _
Public Class ExpressionTask _
    Inherits Task _
    Implements IDTSBreakpointSite, IDTSSuspend, IDTSComponentPersist
'Uso
Dim instance As ExpressionTask

[GuidAttribute("2EE7D9A9-DA39-4F6F-A1E4-804F1FBC544C")]
public class ExpressionTask : Task, 
    IDTSBreakpointSite, IDTSSuspend, IDTSComponentPersist

[GuidAttribute(L"2EE7D9A9-DA39-4F6F-A1E4-804F1FBC544C")]
public ref class ExpressionTask : public Task, 
    IDTSBreakpointSite, IDTSSuspend, IDTSComponentPersist

[<GuidAttribute("2EE7D9A9-DA39-4F6F-A1E4-804F1FBC544C")>]
type ExpressionTask =  
    class 
        inherit Task 
        interface IDTSBreakpointSite 
        interface IDTSSuspend 
        interface IDTSComponentPersist 
    end

public class ExpressionTask extends Task implements IDTSBreakpointSite, IDTSSuspend, IDTSComponentPersist

O tipo ExpressionTask expõe os membros a seguir.

Construtores

  Nome Descrição
Método público ExpressionTask Initializes a new instance of the ExpressionTask class.

Início

Propriedades

  Nome Descrição
Propriedade pública DebugMode Gets or sets a Boolean that indicates whether a task should determine whether breakpoints are enabled.
Propriedade pública ExecutionValue Returns the result of the task execution. (Substitui Task.ExecutionValue.)
Propriedade pública Expression Gets or sets the expression to be executed by the task.
Propriedade pública SuspendRequired Gets or sets a Boolean that indicates whether tasks should suspend when they encounter a breakpoint. This value is set by the runtime engine for tasks and containers when a breakpoint is encountered.
Propriedade pública Version *** Member deprecated; see Remarks. ***    Returns the version of the task. This property is read-only. (Herdado de Task.)

Início

Métodos

  Nome Descrição
Método público AcceptBreakpointManager Called by the run-time engine when a task or container is created, and is passed a BreakpointManager to enable the task to create, remove, and check the status of breakpoints. This method is called by the runtime and is not used in code.
Método público CanUpdate *** Member deprecated; see Remarks. ***    A Boolean that indicates whether the new package XML can update the old package XML. (Herdado de Task.)
Método público Equals Determines whether two object instances are equal. (Herdado de DtsObject.)
Método público Execute Runs the task. (Substitui Task.Execute(Connections, VariableDispenser, IDTSComponentEvents, IDTSLogging, Object).)
Método protegido Finalize (Herdado de Object.)
Método público GetConnectionID Gets a String containing the ID of the connection. (Herdado de Task.)
Método público GetConnectionName Gets a String containing the name of the connection. (Herdado de Task.)
Método público GetHashCode Returns the hash code for this instance. (Herdado de DtsObject.)
Método público GetType (Herdado de Object.)
Método público InitializeTask Initializes the properties associated with the task. This method is called by the runtime and is not used in code. (Herdado de Task.)
Método público LoadFromXML Loads the definition of the task, in XML format, from the XML definition of the package.
Método protegido MemberwiseClone (Herdado de Object.)
Método público ResumeExecution Resumes execution of the task after pausing. The task or container is resumed by the runtime engine.
Método público SaveToXML Saves the definition of the task, in XML format, into the XML definition of the package.
Método público SuspendExecution Indicates that the executable needs to suspend. This method is called by the runtime engine.
Método público ToString (Herdado de Object.)
Método público Update *** Member deprecated; see Remarks. ***    This method updates the old package XML with the new package XML if CanUpdate is set to true. (Herdado de Task.)
Método público Validate Verifies that the task is properly configured. (Substitui Task.Validate(Connections, VariableDispenser, IDTSComponentEvents, IDTSLogging).)
Método público ValidateExpression Verifies that the expression is properly configured.

Início

Segurança de thread

Qualquer membro público static (Shared no Visual Basic) desse tipo é seguro para threads. Não há garantia de que qualquer membro de instância seja seguro para threads.

Consulte também

Referência

Namespace Microsoft.SqlServer.Dts.Tasks.ExpressionTask