Welcome
Developing
Developing EGL applications
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.
EGL Language Reference
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.
Applications with user interfaces
Text UI
A text UI application presents a text-based user interface similar to that of a 5250 or 3270 terminal.
converseVar
segmentedMode

Overview
Getting started
Installing
Upgrading and migrating
Developing
- Model driven development of EGL code
- Generating source code from UML models
  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.
- Developing EGL applications
  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.
  - How to use this documentation
  - Additional information about EGL
    The most recent EGL documentation is in the Rational® Business Developer Information Center.
  - EGL Programmer's Guide
    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.
  - EGL Generation Guide
    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.
  - EGL Language Reference
    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.
    - General syntax
    - System data parts
    - User-defined data parts
    - Logic parts
    - Correspondence between a JSON string and an EGL variable
      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.
    - Correspondence between an XML string and an EGL variable
      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.
    - EGL statements
    - EGL core system libraries and variables
    - Accessing data in EGL
      Whenever you access a data store in EGL, the data goes into a record.
    - Applications with user interfaces
      - Enumerations for user interface properties and fields
      - Common UI statements
      - Common UI properties
      - Validation properties
      - Handler part
        A handler typically includes both variables and functions. It is used for basic processing and for user interaction.
      - Rich UI programming model
      - EGL library ruiLib
        This topic describes the system functions in the ruiLib library.
      - DojoLib
        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.
      - DojoMobileLib
        The DojoMobileLib widget defines constants that are used by EGL Dojo mobile widgets.
      - Reference to widgets
      - EGL reports
      - Text UI
        A text UI application presents a text-based user interface similar to that of a 5250 or 3270 terminal.
        Program part stereotype for Text UI
        Additional program properties for Text UI
        Introduction to Form parts
        CLEAR key
        Use the CLEAR key in a Text UI program to dismiss a form without validating input.
        Form fields
        Introduction to FormGroup parts
        FormGroup part
        The FormGroup is a main part; it resides in a source file that has the same name as the part.
        FormGroup properties
        use considerations for FormGroup parts
        Logical expressions for Text UI forms
        Segmentation in Text UI programs and UI programs
        EGL statements for Text UI
        Text UI uses two EGL statements not used anywhere else, in addition to several common EGL statements.
        Form field properties
        Modified data tag and modified property
        Enumerations for Text UI
        EGL library converseLib
        converseVar
        commitOnConverse
        eventKey
        printerAssociation
        segmentedMode
        validationMsgNum
      - Web transaction support in EGL
        Use EGL web transactions to migrate VisualAge® Generator web transactions to EGL.
    - VisualAge® Generator compatibility
    - Appendices
    - Importing product-supplied projects
      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.
  - Rational® COBOL Runtime Guide for zSeries®
    This manual provides information about customizing and administering the IBM® Rational® COBOL Runtime.
  - Rational® Business Developer EGL Server Guide for IBM® i
    This manual provides information about customizing and administering EGL Server for IBM® i on the host.
  - Generation for VSE Feature Reference
    This reference manual provides z/VSE-specific information about developing and generating EGL programs in the VSE environment.
- Source code analysis with code review
  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.
- Responsive Design Support in RBD
  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.
Samples
Troubleshooting and support
Reference
Glossary
Using the help
Notices for IBM Rational Business Developer documentation

segmentedMode

This variable is used only if you are in VisualAge® Generator compatibility mode; for more information, see VisualAge Generator compatibility. Use the converseVar.segmentedMode system variable in a main Text UI program to change the effect of the converse statement. The variable is ignored in called programs. For background information, see Segmentation in Text UI programs and UI programs.

Values of converseVar.segmentedMode are as follows:

1: The next converse statement runs in segmented mode.
0: The next converse statement runs in non-segmented mode.

The default value is 0 for non-segmented programs and 1 for segmented programs. The variable is reset to the default after the converse statement runs.

You can use this variable in any of these ways:

As the source or target in an assignment or move statement
As the count value in a move...for count statement
As a comparison value in a logical expression
As the value in a return statement

Characteristics of converseVar.segmentedMode are as follows:

Primitive type: NUM
Data length: 1
Is value restored after a converse?: No

Compatibility

Table 1. Compatibility considerations for segmentedMode
Platform	Issue
IMS/VS	The value of converseVar.segmentedMode is ignored in IMS/VS. All programs must be segmented.