TransactionOption 列挙体とは何？わかりやすく解説 Weblio辞書

.NET Framework クラスライブラリリファレンス

索引トップ用語の索引ランキング

TransactionOption 列挙体

コンポーネントに必要な自動トランザクションのタイプを指定します。

名前空間: System.EnterpriseServices
アセンブリ: System.EnterpriseServices (system.enterpriseservices.dll 内)
構文

Visual Basic (宣言)

<SerializableAttribute> _
Public Enumeration TransactionOption

Visual Basic (使用法)

Dim instance As TransactionOption

[SerializableAttribute] 
public enum TransactionOption

C++

[SerializableAttribute] 
public enum class TransactionOption

/** @attribute SerializableAttribute() */ 
public enum TransactionOption

JScript

SerializableAttribute 
public enum TransactionOption

メンバ

	メンバ名	説明
	Disabled	現在のコンテキストのすべてのトランザクションを無視します。
	NotSupported	制御するトランザクションがないコンテキストでコンポーネントを作成します。
	Required	トランザクションが存在する場合はこれを共有し、必要に応じて新しいトランザクションを作成します。
	RequiresNew	現在のコンテキストの状態とは関係なく、新しいトランザクションでコンポーネントを作成します。
	Supported	トランザクションが存在する場合はこれを共有します。

解説

.NET インストールツール (Regsvcs.exe) を使用すると、ServicedComponent のトランザクションのオプションが、既定で Disabled に設定されます。

使用例

TransactionOption 型の使用方法のコード例を次に示します。

Visual Basic

Imports System
Imports System.EnterpriseServices
Imports System.Reflection


' References:
' System.EnterpriseServices

' An instance of this class will not participate in transactions, but
 can
' share its caller's context even if its caller is configured as
' NotSupported, Supported, Required, or RequiresNew.
<Transaction(TransactionOption.Disabled)>  _
Public Class TransactionAttribute_TransactionDisabled
    Inherits ServicedComponent
End Class 'TransactionAttribute_TransactionDisabled

' An instance of this class will not participate in transactions, and
 will
' share its caller's context only if its caller is also configured as
' NotSupported.
<Transaction(TransactionOption.NotSupported)>  _
Public Class TransactionAttribute_TransactionNotSupported
    Inherits ServicedComponent
End Class 'TransactionAttribute_TransactionNotSupported

' An instance of this class will participate in its caller's transaction
' if one exists.
<Transaction(TransactionOption.Supported)>  _
Public Class TransactionAttribute_TransactionSupported
    Inherits ServicedComponent
End Class 'TransactionAttribute_TransactionSupported

' An instance of this class will participate in its caller's transaction
' if one exists. If not, a new transaction will be created for it.
<Transaction(TransactionOption.Required)>  _
Public Class TransactionAttribute_TransactionRequired
    Inherits ServicedComponent
End Class 'TransactionAttribute_TransactionRequired

' A new transaction will always be created for an instance of this class.
<Transaction(TransactionOption.RequiresNew)>  _
Public Class TransactionAttribute_TransactionRequiresNew
    Inherits ServicedComponent
End Class 'TransactionAttribute_TransactionRequiresNew

using System;
using System.EnterpriseServices;
using System.Reflection;

// References:
// System.EnterpriseServices

// An instance of this class will not participate in transactions, but
 can
// share its caller's context even if its caller is configured as
// NotSupported, Supported, Required, or RequiresNew.
[Transaction(TransactionOption.Disabled)]
public class TransactionAttribute_TransactionDisabled
 : ServicedComponent
{
}

// An instance of this class will not participate in transactions, and
 will
// share its caller's context only if its caller is also configured
 as
// NotSupported.
[Transaction(TransactionOption.NotSupported)]
public class TransactionAttribute_TransactionNotSupported
 : ServicedComponent
{
}

// An instance of this class will participate in its caller's transaction
// if one exists.
[Transaction(TransactionOption.Supported)]
public class TransactionAttribute_TransactionSupported
 : ServicedComponent
{
}

// An instance of this class will participate in its caller's transaction
// if one exists. If not, a new transaction will be created for it.
[Transaction(TransactionOption.Required)]
public class TransactionAttribute_TransactionRequired
 : ServicedComponent
{
}

// A new transaction will always be created for an instance of this
 class.
[Transaction(TransactionOption.RequiresNew)]
public class TransactionAttribute_TransactionRequiresNew
 : ServicedComponent
{
}

C++

#using <System.EnterpriseServices.dll>

using namespace System;
using namespace System::EnterpriseServices;
using namespace System::Reflection;

// References:
// System.EnterpriseServices

// An instance of this class will not participate in transactions, but
 can
// share its caller's context even if its caller is configured as
// NotSupported, Supported, Required, or RequiresNew.
[Transaction(TransactionOption::Disabled)]
public ref class TransactionDisabled : public
 ServicedComponent
{
};

// An instance of this class will not participate in transactions, and
 will
// share its caller's context only if its caller is also configured
 as
// NotSupported.
[Transaction(TransactionOption::NotSupported)]
public ref class TransactionNotSupported :
 public ServicedComponent
{
};

// An instance of this class will participate in its caller's transaction
// if one exists.
[Transaction(TransactionOption::Supported)]
public ref class TransactionSupported : public
 ServicedComponent
{
};

// An instance of this class will participate in its caller's transaction
// if one exists. If not, a new transaction will be created for it.
[Transaction(TransactionOption::Required)]
public ref class TransactionRequired : public
 ServicedComponent
{
};

// A new transaction will always be created for an instance of this
 class.
[Transaction(TransactionOption::RequiresNew)]
public ref class TransactionRequiresNew : public
 ServicedComponent
{
};

import System.*;
import System.EnterpriseServices.*;
import System.Reflection.*;

// References:
// System.EnterpriseServices
// An instance of this class will not participate in transactions, but
 can
// share its caller's context even if its caller is configured as
// NotSupported, Supported, Required, or RequiresNew.
/** @attribute Transaction(TransactionOption.Disabled)
 */
public class TransactionAttribute_TransactionDisabled
 extends ServicedComponent
{
} //TransactionAttribute_TransactionDisabled

// An instance of this class will not participate in transactions, and
 will
// share its caller's context only if its caller is also configured
 as
// NotSupported.
/** @attribute Transaction(TransactionOption.NotSupported)
 */
public class TransactionAttribute_TransactionNotSupported
 extends 
    ServicedComponent
{
} //TransactionAttribute_TransactionNotSupported

// An instance of this class will participate in its caller's transaction
// if one exists.
/** @attribute Transaction(TransactionOption.Supported)
 */
public class TransactionAttribute_TransactionSupported
 extends ServicedComponent
{
} //TransactionAttribute_TransactionSupported

// An instance of this class will participate in its caller's transaction
// if one exists. If not, a new transaction will be created for it.
/** @attribute Transaction(TransactionOption.Required)
 */
public class TransactionAttribute_TransactionRequired
 extends ServicedComponent
{
} //TransactionAttribute_TransactionRequired

// A new transaction will always be created for an instance of this
 class.
/** @attribute Transaction(TransactionOption.RequiresNew)
 */
public class TransactionAttribute_TransactionRequiresNew
 extends 
    ServicedComponent
{
} //TransactionAttribute_TransactionRequiresNew