{"id":705,"date":"2008-03-17T22:44:00","date_gmt":"2008-03-17T22:44:00","guid":{"rendered":"\/blogs\/bobb\/post\/Programming-Policy-Based-Management-with-SMO-Part-5-TargetSets-and-TargetSetLevels.aspx"},"modified":"2013-01-04T01:49:55","modified_gmt":"2013-01-04T09:49:55","slug":"programming-policy-based-management-with-smo-part-5-targetsets-and-targetsetlevels","status":"publish","type":"post","link":"https:\/\/www.sqlskills.com\/blogs\/bobb\/programming-policy-based-management-with-smo-part-5-targetsets-and-targetsetlevels\/","title":{"rendered":"Programming Policy-Based Management with SMO – Part 5 – TargetSets and TargetSetLevels"},"content":{"rendered":"

\nThis post is part of a series on programming policy-based management. The series begins here<\/a>.\n<\/p>\n

\nSo, we were working with a policy that required an ObjectSet. ObjectSets contain TargetSets. For example, the ObjectSet for the naming policy (IMultipartName) we were working on needs a TargetSet for Procedure, Synonym, Table, Function, Type, View, and XmlSchemaCollection.\n<\/p>\n

\nNote that this collection is similar to what you'd see for a MultipartName policy in the SSMS designer dialog. The title for it in SSMS is "Against Targets:". We want our policy to apply only to Tables. After fumbling around for a while attempting to define TargetSets and add them to the ObjectSet's collection of them, I found that the seven TargetSets I needed were *already* defined. This reduces enabling only the table's TargetSet to two lines of additional code. Notice that you can reference a specific TargetSet in an ObjectSet by using an indexer. The indexer is an SMO URL.\n<\/p>\n

\nTargetSet ts1 = os1.TargetSets["Server\/Database\/Table"];
\nts1.Enabled = true;\n<\/p>\n

\nBut how to restrict this policy to a single database? For this we need a Condition to name the database. Because this condition is simple we can use ExpressionNode.Parse(). Here's the Condition code.\n<\/p>\n

\n\/\/ Create a condition to enforce
\nCondition con = new Condition(ps, "FinanceDB");
\ncon.Facet = "Database";
\n\/\/ Note: Using Parse() treats the string as an SMO URL. Only works for simplest cases
\nstring s = "@Name = 'finance'";    
\n\/\/ try-catch code omitted for brevity
\ncon.ExpressionNode = ExpressionNode.Parse(s);
\ncon.Create();\n<\/p>\n

\nBack to our TargetSet. We restrict the TargetSet to a specific database by using TargetSet.SetLevelCondition. SetLevelCondition takes a TargetSetLevel, and we get the appropriate TargetSetLevel (which is prepopulated) by…. you guessed it…using a SMO URL. After ts1.Enabled, this limits the policy to a single database defined by our Condition.\n<\/p>\n

\n\/\/ FinanceDB is the name of our Condition that "limit\/defines" this policy only to Finance
\nts1.SetLevelCondition(ts1.GetLevel("Server\/Database"), "FinanceDB");\n<\/p>\n

\nHaving initialized the ObjectSet correctly, we now create the ObjectSet, tie it to the Policy and voila…\n<\/p>\n

\nos1.Create();
\np2.ObjectSet = "CheckFinanceTab_ObjectSet";
\np2.Create();\n<\/p>\n

\nCheck this policy by using the following code in a query window:\n<\/p>\n

\nuse finance
\ngo
\ncreate table dbo.foo (id int);
\ngo\n<\/p>\n

\nYou get the expected error:
\nPolicy 'CheckFinanceTab' has been violated by '\/Server\/(local)\/Database\/finance\/Table\/dbo.foo'.
\nThis transaction will be rolled back.
\nPolicy description: ''
\nAdditional help: '' : ''.
\nMsg 3609, Level 16, State 1, Procedure sp_syspolicy_dispatch_event, Line 50
\nThe transaction ended in the trigger. The batch has been aborted.<\/p>\n","protected":false},"excerpt":{"rendered":"

This post is part of a series on programming policy-based management. The series begins here. So, we were working with a policy that required an ObjectSet. ObjectSets contain TargetSets. For example, the ObjectSet for the naming policy (IMultipartName) we were working on needs a TargetSet for Procedure, Synonym, Table, Function, Type, View, and XmlSchemaCollection. Note […]<\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20,25,29],"tags":[],"class_list":["post-705","post","type-post","status-publish","format-standard","hentry","category-policy-based-management","category-smo","category-sql-server-2008"],"yoast_head":"\nProgramming Policy-Based Management with SMO - Part 5 - TargetSets and TargetSetLevels - Bob Beauchemin<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.sqlskills.com\/blogs\/bobb\/programming-policy-based-management-with-smo-part-5-targetsets-and-targetsetlevels\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Programming Policy-Based Management with SMO - Part 5 - TargetSets and TargetSetLevels - Bob Beauchemin\" \/>\n<meta property=\"og:description\" content=\"This post is part of a series on programming policy-based management. The series begins here. So, we were working with a policy that required an ObjectSet. ObjectSets contain TargetSets. For example, the ObjectSet for the naming policy (IMultipartName) we were working on needs a TargetSet for Procedure, Synonym, Table, Function, Type, View, and XmlSchemaCollection. 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