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8.8. Rule Engine Phases
The engine cycles repeatedly through two phases:
- Working Memory Actions
- This is where most of the work takes place, either in the Consequence (the RHS itself) or the main Java application process. Once the Consequence has finished or the main Java application process calls
fireAllRules()the engine switches to the Agenda Evaluation phase. - Agenda Evaluation
- This attempts to select a rule to fire. If no rule is found it exits. Otherwise it fires the found rule, switching the phase back to Working Memory Actions.
The process repeats until the agenda is clear, in which case control returns to the calling application. When Working Memory Actions are taking place, no rules are being fired.
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