3.2.7 Function components A Function component is an AssemblyLine wrapper around some function or discreet operation, allowing it to be dropped into an AssemblyLine as well as instantiated/invoked from a script. The idea behind Function components is to allow complex components (for example, the Web Services EventHandler) to be split into smaller logical units and then strung together as needed, as well as to provide more visual helper objects where custom scripting was necessary before. Function components also offer the functionality previously provided by EventHandler Actions (for example, launching AssemblyLines, invoking Parsers, and so on). As with all Tivoli Directory Integrator components, the user can easily create their own scripted Function components, turning custom logic into a library of reusable AssemblyLine components. Function components are similar to Connectors in CallReply mode in that they have both Input and Output Maps. The Output Map is used to pass parameters to the Function component, while the Input Map lets you retrieve and manipulate return data. myFunction.callreply( work ) The above example is invoking the AssemblyLine Function called myFunction . Note that calling the AssemblyLine Function method callreply() will cause Attribute Maps and the normal Function component Hook flow to be executed.