Enterprise Generation Language (EGL) is a programming language that you can use to focus on business problems instead of software technologies. Within the Rational® development environment, you can use EGL wizards and other tools to write complex applications with minimal effort.
The EGL Language Reference covers the fundamental use of the language, including its concepts, syntax, and keywords. This volume is intended for a developer writing EGL applications with some experience in procedural programming.
You can use transformations to create source code from a UML model. First you must create a transformation parameters file and then apply those parameters to a model.
The most recent EGL documentation is in the IBM Business Developer documentation.
The EGL Programmer's Guide covers using EGL within the Eclipse Integrated Development Environment (IDE), as well as some of the common programming tasks that EGL developers perform.
The EGL Generation Guide covers the process of converting EGL code to Java™ or COBOL source code, including the processes and the files involved. This section is intended for a developer who will generate or deploy EGL applications.
This topic describes the EGL record that corresponds to a JavaScript™ Object Notation (JSON) string. Other topics describe the functions (serviceLib.convertFromJSON() and serviceLib.convertToJSON()) that are used by a Rich UI developer to convert JSON data to or from a variable, as may be necessary to access a third-party REST service. A failure in either function causes a RuntimeException.
This topic describes the EGL record that corresponds to a JavaScript Object Notation (JSON) string. This topic describes the functions—serviceLib.convertFromJSON() and serviceLib.convertToJSON()—that are used by an EGL developer to convert JSON data to or from a variable either for zOS or IBM i systems. A failure in either function causes a RuntimeException.
This topic describes the EGL record that corresponds to an Extensible Markup Language (XML) string. Other topics describe the functions (serviceLib.convertFromXML and serviceLib.convertToXML) that are used by a Rich UI developer to convert XML data to or from a variable, as may be necessary to access a third-party REST service.
Whenever you access a data store in EGL, the data goes into a record.
A handler typically includes both variables and functions. It is used for basic processing and for user interaction.
As well as EGL naming conventions, certain names in Rich UI have additional restrictions.
Instead of deploying all the Rich UI handlers into a single HTML file, you can control the downloading of Rich UI handler code at run time. For large applications, you gain significant advantage in scalability and performance.
Rich UI provides a way to implement the kind of form processing that is traditional in business software. The processing depends on the Rich UI controller, which is a definition that relates a single view (a widget) with a single model (a data field). For details on Rich UI controllers, see Rich UI validation and formatting.
Themes provide a consistent appearance for all the Dojo widgets in your Rich UI application.
The Rich UI job scheduler is a timer that lets you invoke a customized function after a specified number of milliseconds. You can schedule multiple jobs and can cancel them in response to runtime conditions.
Two memory-management functions are available for avoiding memory leaks. The leaks slow your application and can cause the browser to crash.
With EGL, your Rich UI application can access non-generated JavaScript™. You might be making general logic available, for example, to provide a random number generator. Or you might be referencing a non-EGL widget, for example, to allow use of a Dojo widget inside your code.
The DojoLib library includes constants and validation functions used by the EGL Dojo widgets. The library is not a system library, and its use has prerequisites.
The DojoMobileLib widget defines constants that are used by EGL Dojo mobile widgets.
A text UI application presents a text-based user interface similar to that of a 5250 or 3270 terminal.
Use EGL web transactions to migrate VisualAge® Generator web transactions to EGL.
You can click a link to download the current version of Rich UI projects. The capability is useful if you deleted a project or want a clean version.
This manual provides information about customizing and administering the IBM® Rational® COBOL Runtime.
This manual provides information about customizing and administering EGL Server for IBM® i on the host.
This reference manual provides z/VSE-specific information about developing and generating EGL programs in the VSE environment.
With code review, you can create configurations of coding rules for EGL source code. You can then run the configurations to check the source code for consistency with the rules.
What is Responsive Design? Responsive design is an approach for creation of web pages that automatically scales its content and elements to match the screen size on which it is viewed. So, instead of designing multiple websites for different devices with variable screen sizes, we can design just one website that scales up or down automatically, to match the device it’s being viewed on.
The next topics further describe the Rich UI programming model.