FunctionValue Class
Represents an Argument object that obtains its value from a Transact-SQL user-defined function.
Namespace: Microsoft.SqlServer.NotificationServices.Rules
Assembly : Microsoft.SqlServer.NotificationServices.Rules (in microsoft.sqlserver.notificationservices.rules.dll)
Syntax
'Declaration
Public Class FunctionValue
Inherits Argument
public class FunctionValue : Argument
public ref class FunctionValue : public Argument
public class FunctionValue extends Argument
public class FunctionValue extends Argument
Hinweise
Use the FunctionValue class to use custom database logic to determine an argument value. Your user-defined function must have a scalar return type.
You must specify the user-defined function and parameters in the FunctionValue constructor or using the Parameters and Name properties.
Inheritance Hierarchy
System.Object
Microsoft.SqlServer.NotificationServices.Rules.RuleObject
Microsoft.SqlServer.NotificationServices.Rules.Argument
Microsoft.SqlServer.NotificationServices.Rules.FunctionValue
Beispiel
The following example shows the definition of a user-defined function, and then uses this function to evaluate events:
// Subscription based on the following function definition:
/*
create function SoundexMatch(@x nvarchar(max), @y nvarchar(max))
returns bit
as
begin
if soundex(@x) = soundex(@y)
return 1
return 0
end
* */
// Create subscription and define basic properties.
s = new Subscription(nsApplication, subscriptionClassName);
s.SubscriberId = "Richard";
s.Enabled = true;
s.RuleName = "InventoryTrackerRule";
s.SetFieldValue("DeviceName", "myDevice");
s.SetFieldValue("SubscriberLocale", "en-us");
// Define a condition that uses the function to evaluate
// if the condition is true.
s.Condition = new BooleanLeafCondition(new FunctionValue(
db.UserDefinedFunctions["SoundexMatch", "dbo"],
new FieldValue("ProductName"),
"Rood-250 Black, 48"));
// Add subscription.
s.Add();
Threadsicherheit
Any public static (Shared in Microsoft Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.
Plattformen
Entwicklungsplattformen
Eine Liste der unterstützten Plattformen finden Sie unterHardware- und Softwareanforderungen für die Installation von SQL Server 2005.
Zielplattforme
Eine Liste der unterstützten Plattformen finden Sie unterHardware- und Softwareanforderungen für die Installation von SQL Server 2005.
Siehe auch
Verweis
FunctionValue Members
Microsoft.SqlServer.NotificationServices.Rules Namespace