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Here you add only one row, but since the SQL is parameterized, the data adapter will look for all new rows in the employees data table and submit inserts for all of them to the database: ' insert employees daInsertCommand = cmd daUpdate(ds, "employees") Figure 13-8 shows the new row, and if you check with Database Explorer or SSMSE, you ll see the row has been propagated to the database Roy Beatty is now in the Employees table..

Table A.1 Hibernate Search annotation summary (continued) Name @ProvidedId Description Objects whose identifier is provided externally as opposed to being part of the object state should be marked with this annotation. This annotation should not be used in conjunction with @DocumentId. This annotation is primarily used in the JBoss Cache Searchable project. Specifies a similarity implementation to use in scoring calculations. Specifies a TokenFilterFactory and its parameters inside an @AnalyzerDef. Defines a TokenizerFactory and its parameters inside an @AnalyzerDef. Reference http://www.jboss.org/ jbosscache and http://www.jboss.org/ community/docs/DOC10286 Section 12.2.1

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In this message, 2812 represents the error number, 16 represents the severity level, and 62 represents the state of the error. You can also use the RAISERROR statement to display specific messages within a stored procedure. The RAISERROR statement in its simplest form takes three parameters. The first parameter is the message itself that needs to be shown. The second parameter is the severity level of the error. Any users can use severity levels 11 through 16. They represent messages that can be categorized as information, software, or hardware problems. The third parameter is an arbitrary integer from 1 through 127 that represents information about the state or source of the error. Let s see how a SQL error, raised by a stored procedure, is handled in Visual Basic. You ll create a stored procedure and use the following T-SQL to raise an error when the number of orders in the Orders table exceeds ten.

Table A.2 Main Hibernate Search APIs Class Search (org.hibernate.search .Search) Description Helper method wrapping a Hibernate Session object into a FullTextSession object. Main method: getFullTextSession (Session) Search (org.hibernate.search .jpa.Search) Helper method wrapping a Java Persistence EntityManager object into a FullTextEntityManager object. Main method: getFullTextEntityManage r(EntityManager) FullTextSession Main API used to interact with Hibernate Search in a Hibernate Core environment. Subclasses and wraps a Hibernate Session. Main methods: see table A.3. Section 6.2.1 Section 6.2.1 Reference Section 6.2.1

if @orderscount > 10 raiserror ( 'Orders Count is greater than 10 - Notify the Business Manager', 16, 1 )

In this example, you ll again modify ModifyDataTable.vb (Listing 13-4) to delete a row from the database. 1. Add a new Visual Basic Console Application project named PersistDeletes to your 13 solution. Rename Module1.vb to PersistDeletes.vb. 2. Replace the code in PersistDeletes.vb with the code in Listing 13-7. Listing 13-7. PersistDeletes.vb Imports System Imports System.Data Imports System.Data.SqlClient Module PersistDeletes Sub Main() Dim connstring As String = _ ("Data Source=.\sqlexpress;" & _ "Integrated Security=True;" & _ "database=northwind") 'query Dim qry As String = "select * from employees " & _ "where country = 'UK'" 'SQL to delete employees Dim del As String = "delete from employees " & _ "where employeeid = @employeeid" 'create connection Dim conn As SqlConnection = New SqlConnection(connstring) Try 'create data adapter Dim da As SqlDataAdapter = New SqlDataAdapter da.SelectCommand = New SqlCommand(qry, conn) 'create and fill dataset Dim ds As DataSet = New DataSet da.Fill(ds, "employees") 'get data table reference Dim dt As DataTable = ds.Tables("employees")

Main Hibernate Search APIs (continued) Class Description Main API used to interact with Hibernate Search in a Java Persistence environment. Subclasses and wraps a Java Persistence EntityManager. Main methods: see table A.4. Reference Section 6.2.1

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