User's Manual

14 Chapter 4. WAF Component: Services

• Entertainment

• Music

• Movies

• Television Shows

• Education

• Literacy

• Testing

• Home Schooling

• Theories

• Sports

• Scores

• Venues

• Kinds of sports

• Basketball

• Chess

• Soccer

Example 4-1. Sample Taxonomy

The categorization service provides:

• The ability to set up multiple independent taxonomies.

• A system for importing predeﬁned taxonomies from XML ﬁles.

• A user interface for managing categories.

• An API for categorizing objects.

4.3. Formbuilder Service

Most applications built with WAF allow users to enter information into the system through a web

browser. A user ﬁlls out a number of ﬁelds in a form and clicks the Submit button. The user’s input

is validated and stored for later retrieval and display.

Building complex applications with this sort of user interaction usually requires programmer involve-

ment. For example, if you are building a web browser based email client, you need to write code that

knows how to send and retrieve email messages, how to organize messages in folders, and so forth.

There are another class of applications that do not require any special handling of the input data. What

is required is the ability to enter the data in a structured way, and retrieve it later for display, reporting,

printing and so forth.

For example, a group of users wants to input and store data about competing products — they want

to record the product name, the company’s name, a short product description, and the date it was ﬁrst