A document has been updated: http://cocoon.zones.apache.org/daisy/documentation/1372.html
Document ID: 1372 Branch: main Language: default Name: Introduction (unchanged) Document Type: Cocoon Document (unchanged) Updated on: 5/30/07 9:11:29 PM Updated by: Reinhard Pötz A new version has been created, state: publish Parts ===== Content ------- This part has been updated. Mime type: text/xml (unchanged) File name: (unchanged) Size: 1450 bytes (previous version: 37 bytes) Content diff: --- <html><body><p>TODO</p></body></html> +++ <html> +++ <body> +++ +++ <p>Cocoon has advanced control flow, the ability to describe the order of Web +++ pages that have to be sent to the client, at any given point in time in an +++ application.</p> +++ +++ <p>Traditional Web applications try to model the control flow of a Web +++ application by modeling the application as a finite state machine (FSM). In this +++ model, the Web application is composed of multiple states, but the application +++ can be only in one state at a time. Any request received by the application +++ transitions it into a different state. During such a transition, the application +++ may perform various side-effects, such as updating objects either in memory or +++ in a database. Another important side-effect of such a transition is that a Web +++ page is sent back to the client browser.</p> +++ +++ <p>For simple Web applications, this model works fine. However, as the +++ application grows, the number of states and transitions between them grows as +++ well, and it becomes hard to visualize what's happening in the application.</p> +++ +++ <p>Moreover, the interactions in some applications are more complex than a +++ simple finite state machine. In such cases it's much easier to think of and +++ implement the application as a program, rather than a FSM.</p> +++ +++ <p>By using a high level programming concept called <em>continuations</em>, +++ Cocoon tries to solve this problem, and promises to allow the control flow in +++ Web applications to be modeled as a normal program.</p> +++ +++ </body> +++ </html>
