Working with templates allows you to make customization with number patterns. Suppose that you do not want to use the separator symbols for numbers according to the current locale, but you want to use custom character (unusual for separators). You just have to create a custom attribute template that...

WebRatio allows the user to define Context Parameters and to add Variables, these model elements are used to accomplish different tasks. Context Parameters are strictly related to session storage, as they save information in the sessionContext and make their content available for all the JSP sessio...

WebRatio lets you model your own business processes and obtain a prototype of the resulting Web application. But what about creating a professional Web application implementing your processes? You can start from the proposed prototype and evolve it until you obtain the final solution. What you need ...

It’s a very common practice to display the number of active users of a web application. WebRatio gives you the possibility to easily get the number of users which are currently navigating your Web application and add this feature to your Web application. The solution proposed in this article ...

The "java.lang.ClassFormatError: Invalid method Code length" error, is an error that you can get generating the layout of your Web Project, it means that you used a template in the Web Project that is too large to be compiled. Read this article to discover more about how to handle and prevent this ...

The UnsupportedClassVersionError can occurr in a Web Project that uses custom components, such as custom validation rules, servlets or listeners. All these components are developed using a different project (e.g. a Java project) in which you have to compile the Java classes and create a jar file...

Sometimes may happens that a user has to access to a content and depending on some parameters or actions that content has to change. By the alternative pages,it's possible to decide which content has to be shown depending on one or more conditions defined at run time. Alternative element is usefu...

In WebRatio it's possible to generate PDF, Excel or RTF reports. This article discusses a particular usage of the WebRatio generated reports. The goal is to create a report in order to use it as attachment for a newsletter (or to store it in the database). Suppose you want to send an email to all th...

The Math is an Utility Component designed to parse and evaluate mathematical expressions. A mathematical expression is composed by variables and operators and can be either statically defined at modeling time or dynamically provided through an input parameter at run-time. The Math replaces the varia...

A search engine uses a set of well known rules to decide the visibility of a website. One of these rules is to have simple URLs containing the keywords the page should be indexed with. WebRatio 6 introduces a new feature named URL Fragments. This feature allows to increase the search engine ranking ...

The WebRatio pageContext is a particular data structure which is created everytime the user performs a request in a WebRatio generated Web application. It's a map that contains information used in the computation of all the Units contained in the requested destination page and it is stored in the JS...

This article explains step by step how to create the business process model of the "Vacation Request" process. You will see a brief explanation about the process proposed and then the procedure to create the process model in WebRatio using the BPM perspective.

Web applications are usually structured according to the MVC Pattern. The MVC Pattern logically splits the application in three tiers: Model, View and Controller. WebRatio brings the MVC pattern to its full power, both as design and architectural pattern, by splitting the application in three diffe...

The WebRatio variables allow to configure the folder in which the Web Application of a Web Project will be generated when one of the following commands is used: Generate Full Web Project, Generate Selection, Generate Logic Descriptor Only, Generate Layout Pages Only. This articles describe which are...