FilterRule Class

项目
12/15/2008

Defines a filter over an input table or view based on the results of condition evaluation. This class cannot be inherited.

命名空间: Microsoft.SqlServer.NotificationServices.Rules
程序集: Microsoft.SqlServer.NotificationServices.Rules (in microsoft.sqlserver.notificationservices.rules.dll)

语法

声明
Public Class FilterRule
    Inherits RuleLogic

public class FilterRule : RuleLogic

public ref class FilterRule : public RuleLogic

public class FilterRule extends RuleLogic

public class FilterRule extends RuleLogic

备注

A filter rule defines a filter over a table or view. The filter rule contains statements in the form "IF <Condition> THEN <Action>" where the action is to include or exclude items in the input based on defined conditions.

You must define at least one FilterStatement in the FilterStatements collection.

If you define multiple statements, a statement with an Exclude action takes precedence over a statement with an Include action. If no Include statement is defined, inputs are included by default. Otherwise, inputs are excluded by default.

Inheritance Hierarchy

System.Object
   Microsoft.SqlServer.NotificationServices.Rules.RuleObject
     Microsoft.SqlServer.NotificationServices.Rules.StoredRuleObject
       Microsoft.SqlServer.NotificationServices.Rules.RuleLogic
        Microsoft.SqlServer.NotificationServices.Rules.FilterRule

示例

The following example shows how to define a filter over the event view. When used by a subscription, this filter restricts the set of events to only those products that are in the subassembly production phase.

// Subscribe to products in Subassembly location. This
// requires select permissions on all tables in the sample.

//Specify server and database.
Server server = new Server("MyServer");
Database db = server.Databases[nsApplication.DatabaseName];

// Specify tables and views used by the condition.
Table locationTable = db.Tables["Location", "Production"];
Table inventoryTable = db.Tables["ProductInventory", "Production"];
View eventView = db.Views["InventoryTrackerEvents",
    "NS_InventoryTrackerApplication"];

// Filter defining "Subassembly" locations.
FilterRule toolCrib = new FilterRule(
    new TableInputType(db.Tables["Location", "Production"]),
    new SimpleLeafCondition(new FieldValue("Name"),
        SimpleOperator.Equals, "Subassembly"));

// Create subscription and define basic properties.
s = new Subscription(nsApplication, subscriptionClassName);
s.SubscriberId = "Stephanie";
s.Enabled = true;
s.RuleName = "InventoryTrackerRule";
s.SetFieldValue("DeviceName", "myDevice");
s.SetFieldValue("SubscriberLocale", "en-us");

// Define a condition using the filter.
s.Condition = new LinkLeafCondition(
    LinkLeafOperator.Any,
    toolCrib,
    new JoinClause(eventView.Columns["ProductId"],
        inventoryTable.Columns["ProductId"]),
    new JoinClause(inventoryTable.Columns["LocationId"],
        locationTable.Columns["LocationId"]));

// Add subscription.
s.Add();

线程安全

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.

平台

开发平台

有关支持的平台列表，请参阅安装 SQL Server 2005 的硬件和软件要求。

目标平台