Use the list of all Connector Interfaces that are included with IBM Security Directory Integrator to implement the actual logic to communicate with the Data Source it is supposed to handle.
You can also make your own Connector Interfaces if needed; the AssemblyLine wraps them so they are available as AssemblyLine Connectors.
Before Connectors can be meaningfully deployed in an AssemblyLine, it needs to be configured. A number of Connectors have different parameter sets, depending on the Mode they are set to; this implies that, for example, a parameter which is significant in Iterator mode, is not necessary and therefore not present in the list of parameters in AddOnly Mode.
All following AssemblyLine Connectors have access to the methods described in the com.ibm.di.server.AssemblyLineComponent in addition to the methods and properties of the Connector Interface. For documentation of the methods, see the JavaDocs (from the CE, choose Help -> Welcome -> JavaDocs.)