Filter Directives

Filter directives use robot application functions (RAFs) to perform operations. Their use and flow of execution is similar to that of NSAPI directives and server application functions (SAFs) in the Sun Java System Web Server's obj.conf file. Like NSAPI and SAF, data are stored and transferred using property blocks, also called pblocks.

Six robot directives, or RAF classes, correspond to the filtering phases and operations listed in Resource Filtering Process:

• Setup

• Metadata

• Data

• Enumerate

• Generate

• Shutdown

Each directive has its own robot application functions. For example, use filtering functions with the Metadata and Data directives, enumeration functions with the Enumerate directive, generation functions with the Generate directive, and so on.

The built-in robot application functions, as well as instructions for writing your own robot application functions, are explained in the Sun Java System Portal Server 7.1 Developer's Guide.