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You already encountered one of these get functions in the very first example where you were extracting the event identifier. The type field indicates what kind of data you are accessing, the source field indicates the instance of that particular detector. In this example there are two acqiris digitizers with the same data type. Note that event components obtained through this API will be objects of various classes. A full catalog of those objects can be found in the DOXYGEN documentation which is auto-generated from the code of the OFFLINE releases.

Iterating over stepsand steps and events

Some of our experiments (in particular XPP) are heavily relying on so called steps, which are also known as Calibration Transitions. Each DAQ run has one or many such steps. Events are recorded in a scope of a particular step. The new framework has a special provision for scans through the iterator of steps. The idea behind the following example is:

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