Figure 2.

An example of a QDM Operator Module. This module is for temporal operators. The three input ports are (from up to down): connection information and log-in credentials, left side input of the key for encounter list from the previous operation, the right side one. A: the list of operation specific parameters; B: the XML message template; C: XPaths for parameters; D: the Java Snippet to update the parameters on the XML message; E: RESTful communication with the i2b2 server. The rest of the module is shown in Figure 3