SPECIFYING AND APPLYING RULES TO DATA

摘要

A method for applying a rule to data includes receiving data from a data source and processing a particular data unit of an ordered number of data units derived at least in part from the received data. The processing includes determining a set of data units including an ordered subset of data units from the ordered number of data units, each data unit of the ordered subset being related to the particular data unit and occurring before the particular data unit in the ordered number of data units. Prior to applying the rule the state variable is updated to a state that would result from iterating in order through the set of data units and, for each data unit of the ordered subset, applying the rule to the data unit. The rule is then applied to the particular data unit including reading the updated value of the state variable.

主权项

1. A method for applying a rule to data from one or more data sources, the method including:
receiving data from a first data source; processing a particular data unit of an ordered plurality of data units derived at least in part from the data received from the first data source, the processing including:
determining a first set of data units that includes an ordered subset of data units from the ordered plurality of data units, each data unit included in the ordered subset being related to the particular data unit and occurring before the particular data unit in the ordered plurality of data units;prior to applying the rule to the particular data unit, updating at least one state variable to a state that would result from iterating in order through the first set of data units and, for each data unit of the ordered subset, applying the rule to the data unit; andapplying the rule to the particular data unit including reading the updated value of the state variable.