RuleValue Class
Represents an Argument that obtains its value from the evaluation of other RuleLogic instances.
Пространство имен: Microsoft.SqlServer.NotificationServices.Rules
Сборка: Microsoft.SqlServer.NotificationServices.Rules (in microsoft.sqlserver.notificationservices.rules.dll)
'Декларация
Public Class RuleValue
Inherits Argument
public class RuleValue : Argument
public ref class RuleValue : public Argument
public class RuleValue extends Argument
public class RuleValue extends Argument
The RuleValue class allows you to use the result of other rule evaluations as a value in a rule.
You must provide a rule in the RuleValue(RuleLogic) constructor or using the Rule property; this rule must have the same InputType value as the rule or condition you are defining.
A RuleLogic instance of type FilterRule has a Boolean return value; an instance of type PropertyRule has a return type determined by the Result property.
System.Object
Microsoft.SqlServer.NotificationServices.Rules.RuleObject
Microsoft.SqlServer.NotificationServices.Rules.Argument
Microsoft.SqlServer.NotificationServices.Rules.RuleValue
The following example shows how to use a rule value to obtain the logic for a SimpleLeafCondition from a PropertyRule. The SimpleLeafCondition to evaluate the Quantity field for a value that matches the definition of Few:
// Define a new property that defines "Few," "Some," and "Alot"
// of inventory.
PropertyRule quantityCategory = new PropertyRule(
new ViewInputType(eventView),
new PropertyStatement(new SimpleLeafCondition(
new FieldValue("Quantity"),
SimpleOperator.LessThan, 100), "Few"),
new PropertyStatement(new BetweenLeafCondition(
new FieldValue("Quantity"), 100, 200), "Some"),
new PropertyStatement(new SimpleLeafCondition(
new FieldValue("Quantity"),
SimpleOperator.GreaterThan, 200),
"Alot"));
// Create subscription and define basic properties.
s = new Subscription(nsApplication, subscriptionClassName);
s.SubscriberId = "Scott";
s.Enabled = true;
s.RuleName = "InventoryTrackerRule";
s.SetFieldValue("DeviceName", "myDevice");
s.SetFieldValue("SubscriberLocale", "en-us");
// Use the new property to return only products with "few" remaining
// in inventory. Note that the category definition can be reused.
s.Condition = new SimpleLeafCondition(
new RuleValue(quantityCategory),
SimpleOperator.Equals,
"Few");
// Add subscription.
s.Add();
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.
Список поддерживаемых платформ см. в разделе Hardware and Software Requirements for Installing SQL Server 2005.
Список поддерживаемых платформ см. в разделе Hardware and Software Requirements for Installing SQL Server 2005.
RuleValue Members
Microsoft.SqlServer.NotificationServices.Rules Namespace