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Note that in this RAISERROR statement, you specify a message string, a severity level of 16, and an arbitrary state number of 1. When a RAISERROR statement that you write contains a message string, the error number is given automatically as 50000. When SQL Server raises errors using RAISERROR, it uses a predefined dictionary of messages to give out the corresponding error numbers. (See SQL Server Books Online to learn how to add your own messages to SQL Server s predefined messages.)

FullTextQuery (Hibernate Core and Java Persistence)

Subclasses either org.hibernate.Query or javax.persistence.Query and provides full-text specific query information. Main methods: see table A.5.

'delete employees ' 'create command Dim cmd As SqlCommand = New SqlCommand(del, conn) ' 'map parameters cmd.Parameters.Add("@employeeid", _ SqlDbType.Int, 4, "employeeid") ' 'select employees Dim filt As String = "firstname = 'Roy'" & _ "and lastname = 'Beatty'" ' delete employees Dim row As DataRow For Each row In dt.Select(filt) ' row.Delete() Next row da.DeleteCommand = cmd da.Update(ds, "employees") ' display rows For Each row In dt.Rows Console.WriteLine("{0} {1} {2}", _ row("firstname").ToString().PadRight(15), _ row("lastname").ToString().PadLeft(25),row("city")) Next row Catch e As Exception Console.WriteLine(("Error: " + e.ToString)) Finally ' close connection conn.Close() End Try End Sub End Module 3. Make PersistDeletes the startup project, and run it by pressing Ctrl+F5. You should see the output in Figure 13-9.

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Let s raise a database error and handle the exception. 1. Add a button to the Database tab page and change its Text property to Database Exception-1. Add a label to the right of this button, and change its Text property to

Provides application-wide operations as well as access to the underlying Lucene resources. Main methods: see table A.6.

2. Add a second button to the tab page, and change its Text property to Database Exception-2. Add a label to the right of this button, and change its Text property to Calls a stored procedure that encounters an error. 3. Add a third button to the tab page, and change its Text property to Database Exception-3. Add a label to the right of this button, and change its Text property to Creates multiple SqlError objects. The layout should look like Figure 13-7.

SearchFactory instances can be retrieved from FullTextSession .getSearchFactory() or FullTextEntityManager .getSearchFactory(). Section 6.2.2

You add a DELETE statement (and change the name of the original query string variable from sql to del in order to clearly distinguish it from this statement): 'SQL to delete employees Dim del As String = "delete from employees " & _ "where employeeid = @employeeid" You insert the DELETE code ahead of the display After creating a command and mapping a parameter: 'delete employees ' 'create command Dim cmd As SqlCommand = New SqlCommand(del, conn) ' 'map parameters cmdParametersAdd("@employeeid", _ SqlDbTypeInt, 4, "employeeid") you select the row to delete and delete it Actually, you select all rows for employees named Roy Beatty, since you don t know (or care about) their employee IDs Although you expect only one row to be selected, you use a loop to delete all the rows.

4. Using SSMSE, create a stored procedure named sp_DbException_1, as follows:

Exception is raised when an error occurs. This is a runtime exception and is used for all Hibernate Search errors: mapping errors, configuration errors, engine execution errors, and usage errors. Hibernate event listener; listens to entity changes and triggers Hibernate Search indexing. Name of the Lucene document field in which Hibernate Search stores the class name.

Method Description FullTextSession inherits Session. All methods are available, including persist, merge, createQuery, and so on. Creates a FullTextQuery based on the Lucene query and restricted to the list of classes passed as a parameter. Entry point for executing a full-text query. Reference Section 2.4

create procedure sp_DbException_1 as set nocount on declare @ordercount int select @ordercount = count(*) from orders

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