Drools 5.4.0 / 5.5.0.Beta1

Developer: Website: License / Price: Platforms: Databases: Language: Last Updated: Category: Red Hat Middleware LLC | More scripts www.jboss.org Apache License  Windows / Linux / Mac OS / BSD / Solaris N/A Java October 1st, 2012, 16:57 GMT C: \ Development Tools \ Complete applications

Drools is actually made up of several other projects like Guvnor (Business Rules Manager), Expert (rule engine), 5jBPM 5 (process/workflow), Fusion (event processing/temporal reasoning) and Planner (automated planning).

Here are some key features of "Drools":

Engine features:
· Full Rete Implementation -with high performance indexing
· Dynamic RuleBases
· Stateful and Stateless Execution Modes
· Async operations
· Rete and Sequential Rete
· Rule Agent
· Optional Data Shadowing
· Pluggeable Dialects

Propositional Logic features:
· Literal Restriction
· Variable Restriction
· Return Value Restriction
· Jointed and dis-jointed Connectives allowed '&&' '||'
· inline-Eval

First Order Logic (Quantifiers) features:
· And
· Or
· Exists
· Not
· Accumulate
· Collect
· From
· Forall
· Nesting of any CE inside of 'and' and 'or'
· Support for both infix and prefix 'and'/'or' CEs
· Nesting and Chaining of 'from', 'accumulate', 'collect'

Execution Control features:
· Conflict Resolution (salience) Now pluggeable
· Agenda Filters
· Agenda Groups
· Activation Groups
· Rule Flow
· Attributes (no-loop, lock-on-active)
· Temporal Rules
· Scheduler for rule duration will fire when a rule is true for X duration
· Truth maintenance with Logical Insertions

Event Model features:
· Working Memory, Agenda and Rule Flow
· Configurable
· All Rete optimizations and execution behavior can be configured
· Authoring
· Technical rules: DRL and XML formats supported
· Template based DSLs
· Guided Editor
· BRMS and Eclipse
· Decision Tables (Excel, Open Office)
· BRMS (Knowledge Asset Management System)
· Authoring and Storage DRLs, RuleFlows, Decision Tables, Business Rules (Guided Editor)
· Multi level Versioning, at both the rule and package level
· Classification
· Deployment
· Built on Standards and Open APIs JCR (JSR 170) Dublin Core, GWT

Via: Drools 5.4.0 / 5.5.0.Beta1