Thera comprises:

• Java framework that implements core runtime architecture.
• Java libraries that contain implementations of multiple important and useful servers, formats, operation steps and services. Currently, there are out-of-the-box more than 70 elements, ready to be configured without any programming.
• XML editor specialized for Thera configuration files and aware of the framework elements and their relations.
• A preview utility that automatically documents in HTML format the runtime execution of a Thera XML configuration file.

Thera development is therefore done on two levels. A Thera configurator works with the Editor to assemble the elements (each realized by a Java class) into the resulting application.

When a required functionality can not be configured using already existing elements, a Java developer implements the missing element conforming to the Thera interfaces for the given element type (server, format, operation step or service). It will typically inherit from a framework class, examples may be found in any class in the libraries.

Once the required application is configured in the Editor, it produces an XML configuration file. This file describes the runtime structure of the application.

During application execution, the framework reads the configuration file and dynamically creates application elements as required by the application flow of control.

You can use the preview utility to automatically create configurator's documentation of a Thera application or to get a fast insight into functionality of any Thera application.

Next: Example - Retail Payment System

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