Drools rules workflow engine Full development tutorials (basic syntax, performance tuning, common tools)

• 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 Q2748165793

I. Background of the course

What is 1.1 drools?

A rule engine is a component embedded in an application that separates business decisions from application code and writes business decisions using predefined semantic modules. Accept data entry, interpret business rules, and make business decisions based on business rules.

Drools implements the rule engine, which is a business logic integration platform, based on the Java and rate algorithm of the production Rules engine implementation, is Redhat's open-source products.

Drools history

2001, Drools, based on linear brute force search

After the 2.0 version, and based on the rate algorithm is rewritten to improve the performance of drools, the rule file is mainly XML-based

In version 3.0, the. drl file format was introduced, which is a domain-specific language (DSL) specifically written for rules

In version 5.0, the introduction of important functional modules such as Drools Funsion/flowrule

1.2, why should learn drools?

The rule engine is the framework for organizing business logic. It allows developers to focus on what they are sure of, rather than making decisions on some low-level mechanisms.

Often, business users are more comfortable with things that make them understood to be right, relative to things that are expressed in the form of If...then. Some of the things you hear from business experts are as follows

· " the 10A form is used to request a cost of more than 200 euros."

· " we only offer a split of 10,000 or more than 10,000 of transactions."

· " purchases exceeding £ 10m require approval from the director of the company."

By focusing on what business users know is the right thing to do, rather than how to express it with Jave code, the instructions above are much clearer than our previous code examples. Although they are already clear, we still need a mechanism to apply these rules to the facts that business users know and make decisions about. This mechanism is the rule engine.

Ii. Outline of the course

Module1-drools Introduction

Module2-drools Rule language

Module3-Domain Special language (DSL)

MODULE4-Decision Table

Module5–guvnor

Module6-rete algorithm

Module7-drools Advanced Syntax

Module8-activiti and Drools Integration

Module9-performance&debugging

Drools rules workflow engine Full development tutorials (basic syntax, performance tuning, common tools)