About Data Extraction

Data extraction is performed through an XML parser. Each message instance in the XML data stream contains the specified data elements (for example, passenger counts from an APC system) for a given stop and its associated stop ID and trip ID.

Whether systems integration is achieved through a data processing form or file import, the XML message enters the Gateway through a message buffer. The buffer serves as a temporary message storage and Gateway logs the receipt of each message.

In the buffer, the extraction algorithm parses the XML message into data objects and sends them to the data validation algorithm.