From AT&T Support Wiki
The Developer Suite allows software developers to fully customize, enhance, and extend applications and operations at the code level. With the familiarity of the Java language and robustness of the MVC (Model-View-Controller) architecture, the Developer Suite provides a sophisticated, agile platform for developing on-demand web-based applications.
- For detailed development instructions, see the Tools and APIs, and the Developers Lab.
- For the administrative steps to enable development features, see Develop Tools.
How it Works
The platform architecture follows the standard MVC pattern. It is a proprietary architecture with:
- JSPs (Java Server Pages) as the "View"
- Java classes as "Controllers"
- A Data "Model" based on MySQL
All extensions or programming paradigms follow industry standard languages and protocols.
You can customize the user interface in the platform using these elements:
In a component, you can refer to variables in the context of the current page. For example, you can refer to a contact's zip code as $contact.zipcode.
The following example demonstrates a mashup with an Account Credit Status Component and an Account record. This component fetches the real-time credit status of an account from an enterprise financial system such as Oracle Financials.
A similar example demonstrates a mashup of a Yahoo! Maps Component with address information. This component fetches real-time information from the Yahoo! Maps API.
An Action can be invoked from a data record and can execute any of the following elements:
This example demonstrates how an action (defined as a button in an expense record), can be used to execute a request to an enterprise financials system to process a payment.
Pages are built using HTML and JSP to display custom web pages.
This example demonstrates how a directory object can use a custom page that overrides existing tab functions with a set of custom classes for adding, updating, and searching records.
The controller in the MVC architecture executes the business logic. In the platform, the standard controller has complex logic to interact with the data model according to user input. The platform provides a way to extend the standard controller through Java coding. Optionally, you can replace the controller and write your own business logic.
You can customize the business logic in the platform using these elements:
A data policy can be triggered based on some event, such as when a record is added, updated, deleted, and so on. A data policy can take the form Java code, for example, in which case the Java code can be executed before or after the event. (A data policy can also send an email, among many other actions, and multiple actions can be carried out in a single policy.)
Java code should be written as if you are writing a method body of a Java class. The platform will automatically inject code to make it a class, compile it, and store the bytecode.
Java code can make use of the Java API to communicate with the data model. It can also call methods you write, which in turn can call the Java API to communicate with the data model, or it can instantiate custom Classes to communicate with the data model.
For a list of Java API objects and calls, see: Java API.
Classes are a powerful mechanism by which you can either extend the standard controller in the platform or completely override it. Classes should be written the way you write a usual Java class. From classes, you can call the Java API to communicate with the database to add, update, delete, and search for data.
There is a special case for classes called Controllers. A Controller is a class through which you can communicate with your page.
To make a class into a Controller, you need to implement the Controller Interface. It has an execute method to implement which takes a HashMap as an argument and returns a ControllerResponse object. This HashMap gives you all the HTTP variables posted by a page user through the GET or POST method.
You do a GET on the HashMap to obtain field values submitted from an HTML form in your page. After processing the fields according to your logic, you return the resulting data through the ControllerResponse's setData method. Since this method accepts java.lang.Object, you can set any object as the data and receive it in your pages.
The model in the MVC architecture represents the data model for the application. The platform data model is very extensive and customizable to suit any business application, and consists of the objects that are already present in your application, such as Account, Contact and so on and any other object created by you.
You can add different types of fields to any object. This is similar to an industry standard RDBMS, where each object in the platform represents a table in the RDBMS and each field in the Object represents a column in that RDBMS table. You can create simple 1-n relationships or complex m-n relationships between your objects. The platform also provides the ability to define primary index and unique indexes.
The platform provides support for other enterprise systems to connect to your data via REST (Representational State Transfer) APIs. Seamlessly and securely exchange and update information across accounting, customer data, or ERP systems, trigger processes in and out of the platform, or build an application to act as a front-end aggregator of information for driving analysis, processes, and activities across your organization.
Use these APIs to integrate external applications with the platform:
The REST API is an inbound HTTP interface to the platform. With it, you send and receive XML over HTTP to integrate enterprise applications with the platform.
- Learn More: REST API request types
- Learn More: HttpConnection Methods