1. What is drools.
Drools is a Java-language based rule engine framework. Solves the problem that the complex business logic in the business system is hard coded into the program code. The advent of drools can separate business logic from program code, and can also change business logic in real time. Support the rule
Infoq published an introduction to the rule engine real-world rule engines, the original http://www.infoq.com/articles/Rule-Engines
There are also two articles on onjava:
Give your business logic a framework with drools http://www.onjava.com/lpt/a/6093
Using drools in your Enterprise Java application http://www.onjava.com/lpt/a/6160
Below is a summary of the esse
".../binaries/org.drools.updatesite" (This directory is in the plugin just unzipped)
-Click OK
-Select So plugin.
-Here is the click Next,finish
After the plug-in is installed, you need to add the drools environment in eclipse:
-click "Windows"-"preferencess"
-Select "Drools"-"Installed Drools runtimes" in the tree menu of the window
-In the empty
install files and environments-must software
Kie-drools-wb-6.3.0.final-tomcat7.war
Drools-distribution-6.3.0.final.zip
A jar file to be used for the Lib directory of Tomcat7, which includes:
Jboss-jacc-api_1.4_spec-1.0.3.final.jar
Kie-tomcat-integration-6.3.0.final.jar
Slf4j-log4j12-1.7.7.jar
Log4j-core-2.1.jar
Drools Version: 5.3
Error description
cvc-complex-type.2.4.c:the Matching wildcard is strict, but no declaration can being found for element drools:keybase
The Keybase node was not found from the error message
Schema configuration:
XML Code http://drools.org/schema/drools-spring Http://anonsvn.jboss.org/repos/labs/labs/jbossrules/trunk/droo Ls-container/drools
Original address: http://docs.jboss.org/drools/release/6.2.0.Final/drools-docs/html_single/index.html
All the steps in front of the original text can be omitted, directly from the installation of the Eclipse plug-in, the installation address is: http://docs.jboss.org/drools/release/6.2.0.Final/drools-docs/html_single/i
Drools. Net V3.0 Copyright 2007 Sahi technologies PVT. Ltd. (http://www.esahi.com)
Contacts: Ritu Jain (ritujain@esahi.com), Chinmay nagarkar (chinmay.nagarkar@esahi.com)The drools.. Net-3.0 is. net version of JBoss-rules 3.0, which is a Rules Engine implementation based on Charles forgy's Rete algorithm tailored for the Java language.
implementation, to realize the separation of technology and business, developer processing technology, business analysts define business rules, each do their own good things.Scenario: There is already a relatively mature open source product support, it is drools, we define business rules in database or brms (Management System), through the management of DB or brms to achieve dynamic change of business logic.When should you use the rule engine?Althoug
contained class loading environment. So third party jar dependencies is unlikely to cause conflict with the outside runtime environment. However, when we build a input event to Drools engine, we need to use the Kiecontainer's class loader to find the input E Vent class referenced in rule.
Build a stateless Kie session and invoke the rule public list
Convert rule evaluation result back to stream data
under the hood:Drools c
Drools 6.5 Final getting started, droolsfinalDrools 6.5 Final Study Notes
Recently, the project involves using rules to operate data. It is too difficult to think of a complete and flexible rule system that can meet business needs, I want to know if there is any open-source rule engine that can be used. Later, I found that Drools, an open-source engine, is more powerful than I expected.
What is
The blog about Drools 6.0 has been written for a long time. On the one hand is recently more rambling, although also learned not to click on the open link less new things, but are not willing to record down; on the other hand, drools itself is more cumbersome, even if the introduction also needs to involve a lot of internal things, more write more feel the power is insufficient. This is the third time that
Course Lecturer: David
Course Category: Other
Suitable for people: Beginner
Number of lessons: 9 hours
Update level: Complete
Using the technology: Java, Drools
Projects involved: Drools Rule workflow engine
Contact information:Need more information to contact Q2748165793I. Background of the courseWhat is 1.1
Drool is the rule engine of JBoss. I have long wanted to see it, and there is no time for busy periods. take the time to learn. record your learning experience and give it an explanation this year.YesI. Environment configuration.The fastest way:Download the drool Eclipse plug-in:Http://www.jboss.org/drools/downloads.html
This plug-in has good functions and is easy to write Rule, and can create drool projects, all DependenciesJar packages are included,
Course Lecturer: David
Course Category: other
Suitable for people: Beginner
Number of lessons:9 hours
Update level: complete
Use the technology: Java, Drools
Projects involved: Drools Rule Workflow Engine
Contact information:Need more information to contact Q2748165793I. Background of the courseWhat is 1.1
The rule engine is applicable to complex and variable rules, such as product full reduction, bonus points, and attendance rules.
1. Introduce Maven dependency
2. drools can be executed in two ways. The first is based on the kmodule. xml and DRL configuration files, and the second is the dynamic read Rule.
Kmodule-based
1) create a fact. The fact in drools is a common bean in
1.1. ConditionsDrools It is a Java open-source rule engine. Therefore, using drools and pre-installed in the development machine JDK perimeter, Drools5.5 requires a JDK version number of 1.5 or more.1.2. Development environment ConstructionThe first step in most software learning is to build the development environment for the software, and Drools is no exception
1.1. Pre-conditionsDrools is a Java-based open source rule engine, so you need to install the JDK environment on your development machine before using drools, DROOLS5 requires a JDK version of 1.5 or more.1.2. Development environment ConstructionThe first step in most software learning is to build the development environment for the software, and Drools is no exc
Decision table We have a brief introduction to the Drools Rule engine, here is mainly about how to use Java code to associate this Excel file with Drools, how to make it to achieve the desired effect.This assumes that we have such a file under the Resources directory:/drools/decisiontable/mydecisiontable.xlsThen the us
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