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Drools
please note:
- the content below is remote from Wikipedia
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{{Short description|Business rule management system}}{{for|the tendency of saliva to flow out of the mouth|drooling}}{{Multiple issues|{{Advert|date=July 2020}}{{Cleanup rewrite|date=December 2021}}}}- the content below is remote from Wikipedia
- it has been imported raw for GetWiki
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Drools in Apache Kie
Drools, as part of the Kie CommunityWEB, KIE Community,weblinkweblinkweblink 2024-01-17, has entered Apache Incubator in January, 2023.WEB, KIE Status,weblinkweblinkweblink 2023-12-25,Red Hat Decision Manager
Red Hat Decision Manager (formerly Red Hat JBoss BRMSWEB, JBoss Enterprise BRMS,weblink Red Hat, ) is a business rule management system and reasoning engine for business policy and rules development, access, and change management.WEB, JBoss Enterprise BRMS,weblink Red Hat, JBoss Enterprise BRMS is a productized version of Drools with enterprise-level support available. JBoss Rules is also a productized version of Drools, but JBoss Enterprise BRMS is the flagship product.WEB, JBoss Enterprise BRMS: Answers to frequently asked questions,weblink JBoss Community, Components of the enterprise version:WEB, JBoss Enterprise BRMS Platform 5.1,weblink Red Hat, dead,weblink" title="web.archive.org/web/20110318221503weblink">weblink 2011-03-18,- JBoss Enterprise Web Platform â the software infrastructure, supported to run the BRMS components only
- JBoss Enterprise Application Platform or JBoss Enterprise SOA Platform â the software infrastructure, supported to run the BRMS components only
- Business Rules Engine â Drools Expert using the Rete algorithm and the Drools Rule Language (DRL)WEB, JBoss Enterprise BRMS datasheet,weblink Red Hat, 4,
- Business Rules Manager â Drools Guvnor - Guvnor is a centralized repository for Drools Knowledge Bases, with rich web-based GUIs, editors, and tools to aid in the management of large numbers of rules.WEB,weblink Drools - Business Rules Management System (Javaâ¢, Open Source),
- Business Rules Repository â Drools Guvnor
- Drools Guvnor (Business Rules Manager) â a centralized repository for Drools Knowledge Bases
- Drools Expert (rule engine) â uses the rules to perform reasoning
- Drools Flow (process/workflow), or jBPM 5 â provides for workflow and business processes
- Drools Fusion (event processing/temporal reasoning) â provides for complex event processing
- Drools Planner/OptaPlanner (automated planning) â optimizes automated planning, including NP-hard planning problems
Example
This examplweblink{{dead link|date=December 2016 |bot=InternetArchiveBot |fix-attempted=yes }} illustrates a simple rule to print out information about a holiday in July. It checks a condition on an instance of the Holiday class, and executes Java code if that condition is true.rule "validate holiday" when
$h1 : Holiday( month == "july" )
then
System.out.println($h1.name + ":" + $h1.month);
endThe purpose of dialect "mvel" is to point the getter and setters of the variables of your Plain Old Java Object (POJO) classes.Consider the above example, in which a Holiday class is used and inside the circular brackets (parentheses) "month" is used. So with the help of dialect "mvel" the getter and setters of the variable "month" can be accessed.Dialect "java" is used to help us write our Java code in our rules. There is one restriction or characteristic on this. We cannot use Java code inside the "when" part of the rule but we can use Java code in the "then" part.We can also declare a Reference variable $h1 without the $ symbol. There is no restriction on this. The main purpose of putting the $ symbol before the variable is to mark the difference between variables of POJO classes and Rules.See also
References
{{Reflist|30em}}External links
- {{Official website}}
- content above as imported from Wikipedia
- "Drools" does not exist on GetWiki (yet)
- time: 2:48pm EDT - Thu, Apr 25 2024
- "Drools" does not exist on GetWiki (yet)
- time: 2:48pm EDT - Thu, Apr 25 2024
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