LANSA
From Wikipedia, the free encyclopedia
LANSA is a development environment for generating applications on multiple computer platforms. LANSA (http://www.lansa.com) offers an entire family of integrated software development tools. The main feature of the LANSA environment is the RDML language. It is classified as a 4 GL (4th generation computing language). It originated on the IBM AS400 (iSeries or i5), but now runs on many platforms including MS Windows, Unix, and Linux. In its first release in 1987, the RDML language was known as lambda.
[edit] RDML
RDML is an abbreviation for Rapid Development and Maintenance Language. RDML closely follows the syntax of IBM CL, or Control Language. CL is the "scripting language" equivalent of the OS/400 operating system. In recent year RDML has been extended to become RDMLX. This new version of the language has extra features, commands, types, and functions that are used in component development. RDML, on MS windows, integrates seamlessly with ActiveX.
RDMLX is a highly productive language using a centralised data dictionary called the LANSA Repository. Its most notable feature being it generates I/O modules for each file defined from the data dictionary. Every program that needs to talk to a file therefore is guided through to the I/O module (OAM) for that file. This therefore is the ideal place to input validation logic including referential integrity on that file. Unfortunately, data integrity is handled only by the repository, so external changes made by other non-Lansa programs are not validated.
[edit] Other LANSA tools
LANSA Integrator (also known as JSM or Java Services Manager): This powerful product allows RDML programmers to use commonly used functions, mainly to exchange data. For example, the SQLService API allows for execution of SQL statements on many different database platforms. The XMLQueueService API lets a developer quickly send and receive messages from iSeries Data Queues and MQSeries Message Queues. And, among dozens of others, the PDFDocumentService API service helps create PDF documents with bar codes, images, and text from XML data. The most powerful aspect of this product is that, it uses simple commands in the same syntax as RDML. In addition, custom services developers need only implement a few java interfaces, and have the full power of the Java programming language at their disposal.
LANSA For the web (also known as L4Web): This platform for web development lets web developers create isolated, small web components (XHTML and Javascript) with inline server side RDML constructs that are evaluated at runtime to generate dynamic web pages.
LANSA Client: A reporting tool to query business data and create graphs. It is a query tool that works as a user interface to access and update data, and integrates Crystal Reports to enhance its reporting capabilities.
Visual LANSA: A Windows interface and event driven paradigm that provides a very productive and user-friendly environment to knowledge workers. Companies who compare Visual LANSA with Visual Basic all comment how Visual LANSA is more productive and manageable during development and more stable and consistent to implement. Currently Visual LANSA generates C code on the PC.
