Drools is an open source rules engine that allows you to externalize the business rules.
This tutorial assumes that you have gone through “Setting up Java, Maven, and Eclipse.” Once you have gone through the following steps, you should have a project structure as shown below.
Step 1: Create a new Maven project
Drools allow you to externalize business rules to a database, excel spreadsheet, etc. In this tutorial let’s look at an OrderItem scenario where each OrderItem needs to be put through…
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This is an extension to Drools tutorial with Maven. This externalize the rules criteria to an Excel spreadsheet license.xls. This means the age condition is supplied in the xls file under…
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This tutorial uses Drools as a validation engine to validate an input csv file. The rules are maintained externally in an excel spreadsheet. Step 1: Create a new Maven project…
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This extends 04: Drools with rules in an excel spreadsheet – Data validation .
Step 1: Enhance the Trade.java POJO with “actualValues” field and “getFieldValue(String fieldNames)” method.