Data Processor Types - Intermec IF5 User Manual

Appendix B — Configuring and Using the SAP Device Controller

Data Processor Types

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There are five main types of data processors:
• Enrichers read additional data from the tags (or other
sources) and add this data to the data structure of the event.
• Writers write data to or change data on the tags.
• Filters filter out certain events according to some criteria (for
example, they could filter out all events coming from case
tags, or clean out false "tagDisappeared" events ("low pass
filter").
• Buffers buffer the events for later processing and keep an
inventory of tags currently in the field.
• Aggregators aggregate several events into a single event so
they can be transmitted in a single message, thereby
improving system efficiency.
• Senders transform the internal data structure with the help of
a Transformer and sends the information to registered
recipients (generally SAP-AII).
To achieve the desired functionality (filtering, aggregation, etc.),
data processors are arranged into chains or meshes. A processor
receives events, performs its function, and passes the events on to
the next processor. The next illustration shows a simple data
processor chain as specified in the default configuration:
Send
Aggregator
EventTypeFilter
Lowpass Filter
Default data processor chain
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