Classe ScriptComponent

Serves as the base class for the read-only UserComponent class generated by the Script component in the ComponentWrapper project item in a Script component project.

Hierarquia de herança

System.Object
  Microsoft.SqlServer.Dts.Pipeline.ScriptComponent

Namespace:  Microsoft.SqlServer.Dts.Pipeline
Assembly:  Microsoft.SqlServer.TxScript (em Microsoft.SqlServer.TxScript.dll)

Sintaxe

'Declaração
Public Class ScriptComponent
'Uso
Dim instance As ScriptComponent

public class ScriptComponent

public ref class ScriptComponent

type ScriptComponent =  class end

public class ScriptComponent

O tipo ScriptComponent expõe os membros a seguir.

Construtores

	Nome	Descrição
	ScriptComponent	Initializes a new instance of the ScriptComponent class.

Início

Propriedades

	Nome	Descrição
	ComponentMetaData	Returns a reference to the component definition.
	EvaluatorContext	Gets the script component evaluator context.
	InputIDToNameMap	Gets the input identifier to name map.
	OutputNameMap	Gets the output name map.
	ReadOnlyVariables	Returns the collection of ReadOnlyVariables available to the component.
	ReadWriteVariables	Returns the collection of ReadWriteVariables available to the component.
	VariableDispenser	Returns an object that the data flow uses internally to work with variables.

Início

Métodos

	Nome	Descrição
	AcquireConnections	Obtains a connection or connection information by using a connection manager.
	Equals	(Herdado de Object.)
	Finalize	(Herdado de Object.)
	GetColumnIndexes	Infraestrutura. Gets the collection of column index for the script component.
	GetHashCode	(Herdado de Object.)
	GetOutputID	Returns the output ID that has a specified output name.
	GetType	(Herdado de Object.)
	Log	Writes a log entry.
	MemberwiseClone	(Herdado de Object.)
	PostExecute	Executes custom code that must run after the Script component has processed its inputs and outputs.
	PreExecute	Executes custom code that must run before the Script component has processed its inputs and outputs.
	PrimeOutput	Prepares the outputs in Script components, such as sources and transformations with asynchronous outputs, that add new rows to the output buffers.
	ProcessInput(Int32, PipelineBuffer)	Processes the inputs in Script components, such as transformations and destinations, that receive inputs from upstream components.
	ProcessInput(Int32, String, PipelineBuffer, OutputNameMap)	Processes inputs in the script components.
	ReleaseConnections	Releases a connection to a connection manager.
	SetBufferColumnIndexes	Infraestrutura. Sets the index of the buffer columns.
	ToString	(Herdado de Object.)

Início

Comentários

The ScriptComponent class serves as the base class for the read-only UserComponent class, which is generated by the Script component in the ComponentWrapper project item in a Script component project. The UserComponent class serves as the base class for the ScriptMain class, in which the developer writes custom code, and provides the developer with a set of methods for working with the component's inputs and outputs. It also provides strongly-typed accessor properties for variables and connection managers available to the component.

The Script component developer does not use the ScriptComponent class directly, but indirectly, by coding the methods and properties of the ScriptMain class, which inherits from ScriptComponent through the UserComponent class.

For more information, see Codificando e depurando o componente Script and Compreendendo o Component Object Model Script.

Exemplos

The following code sample demonstrates all the code that a developer has to write to create a transformation with synchronous outputs by using the Script component. For more information on this sample, see Criando uma transformação síncrona com o componente Script.

Public Class ScriptMain
    Inherits UserComponent

    Public Overrides Sub MyAddressInput_ProcessInputRow(ByVal Row As MyAddressInputBuffer)

        Row.City = UCase(Row.City)

    End Sub

End Class

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.Pipeline