Класс PrecedenceConstraint
Specifies the properties for configuring a precedence constraint between two containers. This class cannot be inherited.
Иерархия наследования
System.Object
Microsoft.SqlServer.Dts.Runtime.DtsObject
Microsoft.SqlServer.Dts.Runtime.PrecedenceConstraint
Пространство имен: Microsoft.SqlServer.Dts.Runtime
Сборка: Microsoft.SqlServer.ManagedDTS (в Microsoft.SqlServer.ManagedDTS.dll)
Синтаксис
'Декларация
Public NotInheritable Class PrecedenceConstraint _
Inherits DtsObject _
Implements IDTSName, IDTSPersist, IComponent, IDisposable
'Применение
Dim instance As PrecedenceConstraint
public sealed class PrecedenceConstraint : DtsObject,
IDTSName, IDTSPersist, IComponent, IDisposable
public ref class PrecedenceConstraint sealed : public DtsObject,
IDTSName, IDTSPersist, IComponent, IDisposable
[<SealedAttribute>]
type PrecedenceConstraint =
class
inherit DtsObject
interface IDTSName
interface IDTSPersist
interface IComponent
interface IDisposable
end
public final class PrecedenceConstraint extends DtsObject implements IDTSName, IDTSPersist, IComponent, IDisposable
Тип PrecedenceConstraint обеспечивает доступ к следующим элементам.
Свойства
Имя | Описание | |
---|---|---|
ConstrainedExecutable | Gets the name of a constrained container. This property is read-only. | |
CreationName | Gets the string used by the Службы Integration Services runtime to create an instance of the PrecedenceConstraint object and add the object to the PrecedenceConstraints collection. This property is read-only. | |
Description | Gets or sets a description for the constraint. | |
EvalOp | Gets or sets the evaluation operations used by the precedence constraint. | |
EvaluatesTrue | Gets a value that indicates whether the specified Value property evaluates to true. This property is read-only. | |
Expression | Gets or sets the expression that the precedence constraint uses if EvalOp is set to Expression, ExpressionAndConstraint, or ExpressionOrConstraint. | |
ID | Gets the GUID of the precedence constraint. This property is read-only. | |
LogicalAnd | Gets or sets a Boolean value that indicates whether multiple constraints work together. | |
Name | Gets or sets the unique name of the precedence constraint. | |
Parent | Gets the parent container of the PrecedenceConstraint. | |
PrecedenceExecutable | Gets the name of the precedence executable. This property is read-only. | |
Site | Инфраструктура. Gets or sets the site of the precedence constraint. | |
Value | Gets or sets the constraint type of Success, Failure, or Completion. |
В начало
Методы
Имя | Описание | |
---|---|---|
Dispose | This method is inherited from the IDisposable.Dispose method, which is a generic mechanism to explicitly tell an object to perform cleanup. | |
Equals | Determines whether two object instances are equal. (Производный от DtsObject.) | |
GetHashCode | Returns the hash code for this instance. (Производный от DtsObject.) | |
GetType | (Производный от Object.) | |
LoadFromXML | This method is not callable by your application code. Loads a package containing precedence constraints that are saved as .xml, use the Application.LoadPackage method. | |
SaveToXML | This method is not callable by your application code. Saves a package as .xml, use the Application.SaveToXml method. | |
ToString | (Производный от Object.) |
В начало
События
Имя | Описание | |
---|---|---|
Disposed | Adds an event handler to listen to the Disposed event on the precedence constraint. |
В начало
Замечания
You can specify the precedence and constrained executables that the precedence constraint connects, the expression and constraint that determine whether the constrained executable runs, and whether the precedence constraint works in concert with other precedence constraints.
Безопасность многопоточности
Любые открытые статический (Shared в Visual Basic) элементы этого типа потокобезопасны. Потокобезопасность с элементами экземпляров не гарантируется.