PRACTICE in .NET

Creation PDF417 in .NET PRACTICE

PRACTICE
PDF417 Drawer In .NET Framework
Using Barcode drawer for .NET Control to generate, create PDF 417 image in .NET applications.
www.OnBarcode.com
Read PDF-417 2d Barcode In .NET Framework
Using Barcode reader for .NET framework Control to read, scan read, scan image in VS .NET applications.
www.OnBarcode.com
Creating Message Types and Contracts
Drawing Barcode In VS .NET
Using Barcode maker for VS .NET Control to generate, create barcode image in .NET framework applications.
www.OnBarcode.com
Decoding Barcode In Visual Studio .NET
Using Barcode decoder for Visual Studio .NET Control to read, scan read, scan image in Visual Studio .NET applications.
www.OnBarcode.com
In these two practices, you will create the basic message structures required for a Service Broker application.
PDF-417 2d Barcode Maker In Visual C#
Using Barcode generation for Visual Studio .NET Control to generate, create PDF 417 image in .NET applications.
www.OnBarcode.com
PDF417 Encoder In Visual Studio .NET
Using Barcode encoder for ASP.NET Control to generate, create PDF417 image in ASP.NET applications.
www.OnBarcode.com
Practice 1: Create a Message Type
PDF-417 2d Barcode Generation In VB.NET
Using Barcode maker for VS .NET Control to generate, create PDF-417 2d barcode image in .NET framework applications.
www.OnBarcode.com
Painting 2D Barcode In Visual Studio .NET
Using Barcode encoder for .NET Control to generate, create Matrix Barcode image in Visual Studio .NET applications.
www.OnBarcode.com
In this practice, you create a message type that will be used to request a bill of materials from the AdventureWorks database. You also create a message type for the result set that will be returned in response to the request.
PDF-417 2d Barcode Creator In .NET Framework
Using Barcode printer for .NET Control to generate, create PDF417 image in VS .NET applications.
www.OnBarcode.com
Generate Code 3/9 In Visual Studio .NET
Using Barcode creation for .NET framework Control to generate, create USS Code 39 image in .NET applications.
www.OnBarcode.com
NOTE
Drawing EAN128 In .NET
Using Barcode creator for Visual Studio .NET Control to generate, create EAN 128 image in VS .NET applications.
www.OnBarcode.com
Paint USPS Confirm Service Barcode In VS .NET
Using Barcode printer for .NET Control to generate, create Planet image in Visual Studio .NET applications.
www.OnBarcode.com
Practice assumptions
ECC200 Creator In Objective-C
Using Barcode drawer for iPad Control to generate, create Data Matrix image in iPad applications.
www.OnBarcode.com
Bar Code Creation In None
Using Barcode maker for Font Control to generate, create bar code image in Font applications.
www.OnBarcode.com
All exercises in this chapter assume that the Service Broker application is entirely internal to your environment, which enables us to drop the URL naming convention, leaving you with less typing to do.
Create PDF 417 In Visual C#.NET
Using Barcode drawer for VS .NET Control to generate, create PDF-417 2d barcode image in .NET applications.
www.OnBarcode.com
EAN 128 Encoder In Java
Using Barcode creator for Java Control to generate, create GS1 128 image in Java applications.
www.OnBarcode.com
20
Decoding ECC200 In VB.NET
Using Barcode decoder for .NET framework Control to read, scan read, scan image in .NET applications.
www.OnBarcode.com
Generating Barcode In Objective-C
Using Barcode creation for iPad Control to generate, create bar code image in iPad applications.
www.OnBarcode.com
Working with Service Broker
UPC-A Supplement 2 Recognizer In Java
Using Barcode scanner for Java Control to read, scan read, scan image in Java applications.
www.OnBarcode.com
Paint Data Matrix ECC200 In Java
Using Barcode printer for BIRT Control to generate, create Data Matrix image in Eclipse BIRT applications.
www.OnBarcode.com
1. Launch SSMS, connect to SQL Server, and open a new query window. 2. To create the following two message types
The requesting message type named SubmitBOMProduct with the validation option WELL_FORMED_XML The message type to return results, named ReceiveBillOfMaterials, which also uses the validation option WELL_FORMED_XML
type the following batch:
CREATE MESSAGE TYPE SubmitBOMProduct VALIDATION = WELL_FORMED_XML CREATE MESSAGE TYPE ReceiveBillOfMaterials VALIDATION = WELL_FORMED_XML
Practice 2: Create a Contract
In this practice, you create a contract for the message types that you defined in Practice 1. 1. If necessary, launch SSMS, connect to SQL Server, and open a new query window. 2. Type the following batch to create the BillOfMaterialsContract contract for the message types SubmitBOMProduct and ReceiveBillOfMaterials:
CREATE CONTRACT BillOfMaterialsContract (SubmitBOMProduct SENT BY INITIATOR, ReceiveBillOfMaterials SENT BY TARGET)
Lesson Summary
Message types enforce an agreed-upon format for messages that are transmitted between two endpoints, defining the information that is acceptable in a message body. When creating a message type, you have the option of specifying a value for the VALIDATION clause, which specifies whether messages are validated when they are submitted. Contracts restrict the types of messages that can be used in a particular conversation, providing an interface in which the inputs and outputs are completely defined. When you define a contract, you must specify which service is allowed to send a given message type: the initiator, the target, or any.
Lesson 2: Creating Message Types and Contracts
Lesson Review
The following questions are intended to reinforce key information presented in this lesson. The questions are also available on the companion CD if you prefer to review them in electronic form.
NOTE
Answers
Answers to these questions and explanations of why each answer choice is right or wrong are located in the Answers section at the end of the book.
1. Which of the following are validation options for a message type (Choose all that apply.) A. NULL B. ANY C. WELL_FORMED_XML D. NONE 2. What do contracts define A. Valid XML for a message B. Where messages are going to be stored C. Which messages are valid for a conversation D. The services that are valid for a conversation
20
Working with Service Broker
Lesson 3: Creating Queues and Services
Service Broker queues contain all the information that needs to be processed. Put simply, queues are tables that contain one or more messages. Although you could spend a significant amount of time defining message types and contracts, without queues and more particularly, something on a queue a Service Broker application would be worthless. A Service Broker service, in turn, defines a queue for a conversation to use and restricts the types of conversations that are allowed on that queue. This lesson will show you how to define queues and services for your Service Broker infrastructure, highlighting the key options you need to specify.
After this lesson, you will be able to:
Create queues. Create services.
Estimated lesson time: 25 minutes
Creating a Message Queue
Service Broker is designed to facilitate reliable asynchronous processing. An application submits a processing request in the form of a message and then continues on with other work. That process accomplishes the asynchronous piece of the processing equation. However, the message has to be stored somewhere so that it is retained for another process to work on. You could store the message by writing the data into a memory structure and then providing a reference to that structure. But any power loss or reboot will cause messages to be lost. Instead, you need a mechanism to safely store the valuable business data that is contained within a message and protect it against failures, including the loss of the server in which the message was originally stored. A queue is the mechanism that stores all messages within a Service Broker application. SQL Server 2005 implements queues by using a new feature called hidden tables. This feature prevents a queue from being directly accessed by an application via INSERT, UPDATE, DELETE, or SELECT statements while still allowing the storage engine to treat it as any other table. Because queues are recognized by the storage engine, you can use most of the SQL Server high-availability techniques, including clustering, log shipping, database mirroring, and backup/restore, to ensure that data is not lost from a queue.
Copyright © OnBarcode.com . All rights reserved.