barcode in crystal report c# Flow definitions have two levels of granularity, shown in Table 12-1. Table 12-1. Flow Definition in Font

Generate PDF417 in Font Flow definitions have two levels of granularity, shown in Table 12-1. Table 12-1. Flow Definition

Flow definitions have two levels of granularity, shown in Table 12-1. Table 12-1. Flow Definition
PDF417 Printer In None
Using Barcode generator for Font Control to generate, create PDF-417 2d barcode image in Font applications.
www.OnBarcode.com
Make PDF 417 In None
Using Barcode printer for Font Control to generate, create PDF 417 image in Font applications.
www.OnBarcode.com
Flow Artifact
Creating EAN13 In None
Using Barcode generation for Font Control to generate, create GS1 - 13 image in Font applications.
www.OnBarcode.com
Printing Code-39 In None
Using Barcode generation for Font Control to generate, create Code39 image in Font applications.
www.OnBarcode.com
Top-level flow Inline flow
Making Data Matrix 2d Barcode In None
Using Barcode encoder for Font Control to generate, create Data Matrix image in Font applications.
www.OnBarcode.com
Barcode Drawer In None
Using Barcode encoder for Font Control to generate, create Barcode image in Font applications.
www.OnBarcode.com
Appropriate Use
UCC-128 Creation In None
Using Barcode creator for Font Control to generate, create GS1-128 image in Font applications.
www.OnBarcode.com
ISBN - 10 Maker In None
Using Barcode maker for Font Control to generate, create ISBN - 13 image in Font applications.
www.OnBarcode.com
Defines an entire use case that can be reused in other contexts as a subflow. Responsible for completing a logical application transaction. Defines an application transaction that is encapsulated within a larger use case and is fully contained within the larger flow.
PDF417 Printer In Java
Using Barcode encoder for Android Control to generate, create PDF-417 2d barcode image in Android applications.
www.OnBarcode.com
PDF-417 2d Barcode Creation In None
Using Barcode generation for Font Control to generate, create PDF417 image in Font applications.
www.OnBarcode.com
The key point to take away is that a flow always represents a controlled navigation that accomplishes a logical unit of work for a single user. Whether it should be a top-level flow or inline flow is dependent upon whether the flow logic should be reused in other contexts. At the start of a flow definition process it is best not to worry too much about whether a flow should be a top-level flow or an inline flow. The need for extracting flows has a tendency to identify itself in the same way a method, or an interface naturally manifests itself as development progresses. The key point is to ensure that a flow models a cohesive application transaction.
Painting PDF 417 In None
Using Barcode maker for Office Excel Control to generate, create PDF-417 2d barcode image in Office Excel applications.
www.OnBarcode.com
Code39 Encoder In Objective-C
Using Barcode encoder for iPad Control to generate, create USS Code 39 image in iPad applications.
www.OnBarcode.com
CHAPTER 12 ADVANCED SPRING WEB FLOW
QR Code Reader In Visual Basic .NET
Using Barcode decoder for VS .NET Control to read, scan read, scan image in Visual Studio .NET applications.
www.OnBarcode.com
Recognize GTIN - 12 In Java
Using Barcode decoder for Java Control to read, scan read, scan image in Java applications.
www.OnBarcode.com
It may be helpful to think of a flow as a method call, just one that can span many requests into the Tip
QR Code ISO/IEC18004 Encoder In None
Using Barcode generation for Excel Control to generate, create QR Code ISO/IEC18004 image in Microsoft Excel applications.
www.OnBarcode.com
Recognizing Code-39 In Visual C#
Using Barcode decoder for Visual Studio .NET Control to read, scan read, scan image in .NET applications.
www.OnBarcode.com
server. Following this analogy, top-level flows would be public, while inline flows would be private.
Create Barcode In C#
Using Barcode generation for .NET Control to generate, create Barcode image in Visual Studio .NET applications.
www.OnBarcode.com
Make Universal Product Code Version A In Java
Using Barcode creator for Java Control to generate, create UPC Symbol image in Java applications.
www.OnBarcode.com
Managing FlowExecutions
Barcode Generation In .NET
Using Barcode encoder for Reporting Service Control to generate, create Barcode image in Reporting Service applications.
www.OnBarcode.com
EAN / UCC - 14 Creation In .NET
Using Barcode maker for Reporting Service Control to generate, create EAN / UCC - 13 image in Reporting Service applications.
www.OnBarcode.com
In this section we will look in detail at the life cycle of a FlowExecution from start to end and learn how that life cycle is managed. Before discussing how a FlowExecution is created, it is worth reviewing how Spring Web Flow is integrated into the various web frameworks.
Integration with Web Frameworks
11 introduced the definition of a flow and discussed briefly how FlowExecutions are managed. In this section we will delve into the FlowExecutionManager, the central fa ade for driving the execution of flows, and examine what happens behind the scenes. Essentially, the FlowExecutionManager is the primary fa ade through which other systems like Spring MVC communicate with Spring Web Flow. If Spring Web Flow is a proverbial black box, then FlowExecutionManager is the lid. This handover to Spring Web Flow is accomplished by calling either the FlowExecutionManager.launch() or FlowExecutionManager.signalEvent() method, which instructs Spring Web Flow to initiate processing of an external user event. The launch operation instructs Web Flow to launch an entirely new flow execution (or user conversation), and the signalEvent operation instructs Web Flow to signal a user event against the current state of an existing flow execution. Both methods accept org.springframework.webflow. ExternalContext and return org.springframework.webflow.ViewSelection. Listing 12-11 shows the ExternalContext interface fa ade. Listing 12-11. Implementation of org.springframework.webflow.ExternalContext public interface ExternalContext { Map getRequestParameterMap(); Map getRequestMap(); SharedMap getSessionMap(); SharedMap getApplicationMap(); public interface SharedMap extends Map { public Object getMutex(); } } The ExternalContext interface enables Spring Web Flow artifacts such as actions to access information about the calling environment in a standard, normalized fashion, without coupling those artifacts to a specific deployment environment. It is up to a system calling into Spring Web Flow to provide an appropriate ExternalContext implementation. This implementation may provide access to environment-specific constructs; for example, the servlet-specific ExternalContext (org.springframework.webflow.context.servlet.ServletExternalContext) provides access to the native HttpServletRequest and HttpServletResponse Servlet artifacts. Table 12-2 provides a list of ExternalContext adapters provided by Spring Web Flow.
CHAPTER 12 ADVANCED SPRING WEB FLOW
Table 12-2. Provided Adapters for ExternalContext
Adapter Class
org.springframework.webflow.context. portlet.PortletExternalContext org.springframework.webflow.context. servlet.ServletExternalContext
Description
Provides information about a request into Spring Web Flow from a JSR-168 Portlet environment. Provides information about a request into Spring Web Flow from within an HTTP Servlet environment. A StrutsExternalContext subclass exists for integration with the Struts framework. Provides information about a request into Spring Web Flow from JavaServer Faces (JSF).
org.springframework.webflow.manager. jsf.JsfExternalContext
After processing an external event, the FlowExecutionManager returns a ViewSelection. A ViewSelection is a ValueObject (http://java.sun.com/blueprints/corej2eepatterns/ Patterns/TransferObject.html) that selects a view to be rendered after event processing and any model data to be rendered with it. Refer to Table 12-3. Table 12-3. Overview of org.springframework.webflow.ViewSelection
Copyright © OnBarcode.com . All rights reserved.