code to generate barcode in vb.net Forward Chaining in Visual C#.NET

Encoder UPC-A Supplement 2 in Visual C#.NET Forward Chaining

Forward Chaining
UPC Code Drawer In C#
Using Barcode drawer for .NET Control to generate, create Universal Product Code version A image in VS .NET applications.
www.OnBarcode.com
Scanning UCC - 12 In C#
Using Barcode reader for .NET framework Control to read, scan read, scan image in VS .NET applications.
www.OnBarcode.com
If you ve ever watched cars being assembled, you can t help but be amazed. They re actually quite complex, and the assembly process is necessarily even more complex. Wrapped up in the assembly process is the concept of an option. Cars have optional components. Maybe some have satellite radio, or others come with Global Positioning System receivers so that the driver never becomes lost. Not all cars on the assembly line have every option. So when a car comes down the line that does have more options than others, the assembly process often changes. Some options require different wiring harnesses very early in their assembly. Or they require stronger batteries or different engine components.
Bar Code Printer In C#.NET
Using Barcode drawer for Visual Studio .NET Control to generate, create barcode image in Visual Studio .NET applications.
www.OnBarcode.com
Barcode Scanner In C#.NET
Using Barcode decoder for .NET framework Control to read, scan read, scan image in .NET framework applications.
www.OnBarcode.com
12
GTIN - 12 Generation In .NET
Using Barcode maker for ASP.NET Control to generate, create UPC Code image in ASP.NET applications.
www.OnBarcode.com
Encode UPC-A Supplement 2 In .NET
Using Barcode printer for .NET framework Control to generate, create UCC - 12 image in Visual Studio .NET applications.
www.OnBarcode.com
Policy and Rules
Encoding Universal Product Code Version A In Visual Basic .NET
Using Barcode maker for Visual Studio .NET Control to generate, create UPC-A image in Visual Studio .NET applications.
www.OnBarcode.com
Code 128C Generation In Visual C#
Using Barcode drawer for .NET Control to generate, create Code 128C image in Visual Studio .NET applications.
www.OnBarcode.com
The point is that the assembly process changes on a per-car basis. At each assembly station, the line workers (or robots) are told what pieces to assemble. The process that informs them could easily be envisioned as a workflow process using a rules-based approach. Moreover, decisions made early affect how decisions will be made later. Some options aren t compatible with others, so the assembly process must change as the cars move down the line. This is the essence of forward chaining. Rules are indelibly linked together, or chained, such that one rule s decision affects how rules down the line are evaluated. When we have more than one rule to deal with, as we will when working with policy, we ll need to be concerned with rule dependencies and how we want to handle forward chaining. Note
Data Matrix ECC200 Generator In C#.NET
Using Barcode creator for .NET framework Control to generate, create Data Matrix image in Visual Studio .NET applications.
www.OnBarcode.com
Matrix 2D Barcode Printer In Visual C#
Using Barcode drawer for .NET framework Control to generate, create Matrix 2D Barcode image in Visual Studio .NET applications.
www.OnBarcode.com
The phrase "dependencies between rules really means that two or more rules share a common workflow field or property. If no rule shares access to a workflow field or property with another rule, there is no dependency between these two rules. If there is a dependency, the problem will be informing the rules engine that dependencies exist, as there are situations that could mask their existence. (We ll look at those in this section.)
Bar Code Generation In Visual C#.NET
Using Barcode generation for .NET framework Control to generate, create bar code image in VS .NET applications.
www.OnBarcode.com
ITF14 Printer In Visual C#.NET
Using Barcode encoder for .NET framework Control to generate, create Case Code image in .NET applications.
www.OnBarcode.com
As I mentioned earlier in the chapter, rules are collected together in a RuleSet. Rules within a RuleSet can be assigned priorities, and you can specify whether or not they re active at a particular point in time (akin to an enabled property). When more than one rule is present, the rules are processed in the following manner: 1. The list of active rules is derived. 2. The highest priority rule (or set of rules) is found. 3. The rule (or rules) is evaluated, and its then or else actions are executed as necessary. 4. If a rule updates a workflow field or property used by a previous, higher-priority rule in the list, that previous rule is reevaluated and its actions are re-executed as necessary. 5. The process continues until all rules in the RuleSet have been evaluated, or reevaluated, as required. Rules can be forward-chained as a result of three situations: implicit chaining, attributed chaining, or explicit chaining. That is, rules can be linked and share dependencies because the workflow runtime ascertained there was a need (implicit chaining), you applied one of the rules-based attributes to a method (attributed chaining), or you used the Update statement (explicit chaining). Let s look briefly at each.
QR Code JIS X 0510 Maker In Java
Using Barcode encoder for Android Control to generate, create QR Code 2d barcode image in Android applications.
www.OnBarcode.com
Decode Barcode In C#
Using Barcode Control SDK for VS .NET Control to generate, create, read, scan barcode image in .NET applications.
www.OnBarcode.com
Implicit Chaining
Print EAN-13 In Java
Using Barcode printer for Java Control to generate, create EAN-13 Supplement 5 image in Java applications.
www.OnBarcode.com
GS1 - 13 Generator In None
Using Barcode creator for Font Control to generate, create EAN 13 image in Font applications.
www.OnBarcode.com
Implicit chaining comes about when fields and properties are updated by a rule when those fields or properties are clearly read by other rules. For example, consider these rules:
Decoding PDF-417 2d Barcode In Java
Using Barcode reader for Java Control to read, scan read, scan image in Java applications.
www.OnBarcode.com
GS1 128 Reader In Visual Basic .NET
Using Barcode scanner for .NET Control to read, scan read, scan image in .NET applications.
www.OnBarcode.com
IF this.OrderQuantity > 500 THEN this.Discount = 0.1
Create ECC200 In Java
Using Barcode generation for BIRT reports Control to generate, create Data Matrix ECC200 image in Eclipse BIRT applications.
www.OnBarcode.com
Code 39 Drawer In None
Using Barcode creation for Microsoft Word Control to generate, create ANSI/AIM Code 39 image in Office Word applications.
www.OnBarcode.com
Part II
Working with Activities
IF this.Discount > 0 && this.Customer == "Contoso" THEN this.ShippingCost = 0
The first rule applies a discount if the ordered quantity is greater than 500 units. The second rule states that if the company is Contoso, the shipping is free if there is also a discount. The second rule might need to be reevaluated and executed again if the first rule comes into play.
Copyright © OnBarcode.com . All rights reserved.