"A rich text editor is an interface for editing rich text within web browsers, which presents the user a ‘what you see is what you get‘ editing area." (Source: Wikipedia http://en.wikipedia.org/wiki/Online_rich-text_editor)
A rich text editor can be useful when you want the user to be able to write...
Using the search function is the main way the user looks for content on an application.
For this reason it's important to know the best practices for modeling an efficient search with IFML and WebRatio Platform.
WebRatio Platform provides you with a predefined set of "View Components" that you c...
An important aspect of a Web application is its Visual Identity.
The Visual Identity represents all the graphic widgets that you may want to use in order to make the Web application look good while providing a great user experience.
WebRatio lets you create Web applications with a great Visual I...
Validation is used to check that the data inserted by the user via the application’s user interface complies with the requirements of the application domain.
Validating the data, for example data that is inserted into a form (or in any other View Component or View Component Part with input capabili...
In a Web application, you often need to manage information that is shown to the user. Managing the information means to create, update, or delete information. With WebRatio Platform you can easily model an administration section so that the Web application user can manage the application data.
In t...
In a Web application, feedback messages are used to notify the user about the result of a business logic execution.
Feedback messages vary depending on message types, which can be: success, information, warning, or error.
Most Web applications have protected sections that only registered user can access. Users must remember the credentials provided for each site to which they subscribe.
When users are no longer able to authenticate themselves because they have lost or forgotten their passwords, it is necessary to pr...
In a Web Application, we often need to grant different groups of users access to different resources. For example, in a Web Application used for Enterprise Resource Planning, the head of Human Resources will have access to all the employees’ sensitive data (such as person details, salary, etc.), whi...
Granting access to protected resources is a key aspect of many Web applications.
From an interface point of view, you need to define a place for users to insert and validate their credentials.
This lesson shows you how to model the user login and logout. You will learn how you can personalize the ...
The ability to show a list of elements and the details of each listed element is the one of the most common patterns in Web applications, and is called the Master and Details pattern.
In a previous lesson, you already learned how to model the basic Master and Details pattern.
This lesson shows y...
In a Web application, you often need to manage the information shown to the user. Managing information means to create, update, or delete information. With WebRatio Platform you can easily model an Administration section in which the Web application user can manage the application data.
In this le...
In a Web application, you often need to manage the information shown to the user.
Managing information means to create, update, or delete information.
In this lesson we discuss an enhanced version of the Data Management pattern, which allows you to manage more than one piece of information at th...
This is the first lesson that explains the Domain Model in WebRatio Platform.
In this lesson, we introduce the main concepts related to the Domain Model, including a deep analysis of the notation adopted - Entity Relationship (E-R). The following lessons show some detailed content and will explain ...
In the lesson dedicated to the Domain Model Overview, you learned about the Entity-Relationship model and its main concepts: Entity, Attribute and Relationship.
The representation of the Domain Model in WebRatio Platform is quite similar to the Entity-Relationship notation ad it is based on the sam...
Learn how to speed up your productivity by letting WebRatio Platform create physical elements on the database starting from your Domain Model, or letting it extract the Domain Model starting from an existing database structure.
Forget about writing SQL by hand! WebRatio Platform helps you generate ...
Learn how to enrich the Domain Model with calculated information, derived from the materialized data existing in the Domain Model itself. This process is called "derivation", since it creates redundant information that can become handy when defining IFML models. Derivation can be applied by using va...
Modeling the domain information managed by the Web Application is a task that can be easily done with WebRatio. In fact, you have at your disposal many options that allow you to easily create the Domain Model starting from an existing database. Nevertheless you may need to manually add some new obje...
When you are working on a new Web application, you will need to implement a set of common features. In the previous lessons you learned how to model these features in IFML, concentrating on the user interaction.
These features cover how to publish and maintain information, as well as the login ...
When you are working on a Web application you have to consider both the user interaction and the application behavior executed when the user triggers an action. The application behavior can be any kind of business logic you may need to express.
WebRatio Platform provides you with a set of componen...
In a Web application, you often need to manage information that is shown to the user. Managing the information means to create, update, or delete information. With WebRatio Platform you can easily model an administration section so that the Web Application user can manage the application data.
In t...
When you are working on a new Web application there is a set of common requirements that you are going to implement many times. In IFML lessons you learned how to model several commonly recurring requirements focused on the user interaction.
Recurring requirements comprehend how to publish and ma...
WebRatio Platform provides a built-in feature for the localization of Web applications.
The localization is based on the usage of keys instead of terms for all the static elements of the Web application (e.g., labels, components and page titles, field labels and so on). WebRatio Platform allows use...
Usually, Web applications are not standalone; they need to integrate with external systems and other applications in the company intranet. The best way to make different Applications communicate with one another is to use a Web service infrastructure.
That’s why it is important to know how you can...
Usually Web applications do not exist standalone but need to integrate with external systems and applications already existing in the company intranet.
The best way to make different applications communicate with one another is using a Web Service infrastructure.
That’s why it is important to kn...
The best way to make different applications communicate with one another is using a Web Service infrastructure. That’s why it is important to know how you can easily integrate your WebRatio Platform designed application with existing web services. This lesson gives you the knowledge to help you inv...
Usually, Web applications do not exist standalone but need to integrate with external systems and applications that are on the company intranet. The best way to make different applications communicate with one another is by using a Web Service infrastructure. That’s why it is important to know how y...
Usually Web applications are not standalone; they need to integrate with external systems and other applications in the company intranet. The best way to make different applications communicate with one another is to use a Web Service infrastructure. That’s why it is important to know how you can ea...
Usually Web applications are not standalone; they need to integrate with external systems and other applications in the company intranet. The best way to make different applications communicate with one another is to use a Web service infrastructure. That’s why it is important to know how you can ea...
Data management is a crucial aspect for data-centric Web applications. So far, you have learned how to create, read, update and delete data through basic patterns. However, information often needs to be displayed and dealt with in different ways.
Displaying data through View Components is not the o...
Data management is the crucial aspect for Data Centric Web applications. So far you learnt how to create, read, update and delete data, but data is meant to be shown in so many different ways.
Reading data through View Component is not the only option you have in WebRatio Platform.
Imagine that y...
WebRatio Platform lets you define graphic containers for content shown to the user. These containers can be reused for many projects and applied to different type of content. This is possible thanks to the ability to create a dedicated resource containing the graphic container code. This resource is...
WebRatio Platform provides you with a set of predefined elements that allow you to model around 90% of the features that are commonly needed by a Web application. However, the remaining 10% may require custom business logic, or integration with a specific external system.
Although it is not possibl...
“Single sign-on (SSO) is a property of access control of multiple related, but independent, software systems. With this property a user logs in once and gains access to all systems without being prompted to log in again at each of them.” (source Wikipedia).
WebRatio allows you to enable the single ...
When you are testing a feature of your Web application, you may face some problems that prevent the feature from working properly. Using the "Application Logs" is the best way to understand what’s going on, find out the root cause of the undesired behavior and eventually understand which part of the...
To get the Web Application from your Web Project, you have to generate it. When a project is generated, the Application Server loads the corresponding Web Application. WebRatio uses Apache Tomcat as the default Application Server Apache.
Tomcat implements the JavaServer Pages (JSP) and Sun Microsys...
Debugging is a fundamental tool for developing a reliable Web application. In the standard debugging approach, every time a problem arises or whenever you want to investigate the behavior of your application, you can easily debug it by placing breakpoints in your lines of code.
Debugging with WebRa...
The deploy process of a Web application is the final step of the application development. In a structured company, the Web application must pass different tests before going to production.
Usually companies have several different environments where the Web application must be deployed and tested.
...
This lesson gives you the basic knowledge required to define reusable portions of IFML models using the module and module definition concepts.
Working on real-world Web applications may require modeling a large project. In this situation it’s important to be able to manage the project to avoid loss...
This lesson gives you the basic knowledge required to define common content in an IFML Model through the "Master Page" concept.
Working on real-world Web applications may require modeling a large project. In this situation it’s important to be able to manage the project to avoid loss of control and...
In Apache Tomcat, the Manager element represents the session manager that will be used to create and maintain HTTP sessions as requested by the associated Web Application.
Read this article to know how to disable the Persistent Session Management in any Tomcat installation.
WebRatio support all the databases that are supported by Hibernate. Nevertheless, the list of the database types that you have at disposal when creating a new database connection does not contain the full list, but it proposes the most used. Therefore WebRatio gives you the chance to integrate a new...
The Java Naming and Directory Interface (JNDI) is an API for directory service that allows clients to discover and lookup data and objects via a name. Like all Java APIs that interface with host systems, JNDI is independent of the underlying implementation. Additionally, it specifies a service provi...
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 ...
WebRatio Platform gives you the chance to add a Captcha control to the forms of your Web Project.
Read this article to know more about the Captcha control.
The Connect Operation is an operation used to enable the association between instances of two entities (the source entity and the target entity), connected by a specific relationship role.
This article guides you to the usage of the Connect showing also a working example.
The Disconnect Operation is an operation used to delete the association between instances of two entities (the source entity and the target entity), connected by a predefined relationship role.
This article guides you to the usage of the Disconnect showing also a working example.
The Reconnect is an Operation Component used to modify the association between instances of two entities (the Source Entity and the Target Entity), connected by a predefined Relationship Role.
The Reconnect can manage single instances or sets of instances in order to connect or disconnect one in...
The Query Component is available starting from the WebRatio 5.1 version. It's a Utility Component that permits to execute a custom edited query using the HQL(Hibernate Query Language) or SQL query language. Moreover it can dynamically compose an HQL query depending on the incoming Domain Model ident...
The Stored Procedure is an Operation that allows calling a procedure stored in a database.
To use this Component correctly, the procedure must be previously created in your database.
Discover how to use the Stored Procedure reading this article.
The Parameter Collector Operation permits one to collect a set of parameters from multiple sources and to redistribute them to multiple targets. In this way, the operation reduces the model complexity by deleting some data flows, improving its reading and creating a neater model.