Drools Kie - Rule Templates

title

Drools Guvnor - Decision Table

author

Bernard Szlachta (NobleProg Ltd)

Drools Guvnor - Rule Templates

Copyright Notice

Copyright © 2004-2023 by NobleProg Limited All rights reserved.

This publication is protected by copyright, and permission must be obtained from the publisher prior to any prohibited reproduction, storage in a retrieval system, or transmission in any form or by any means, electronic, mechanical, photocopying, recording, or likewise.

Copy existing project and tests。⌘

1. Copy npproj2 to npproj3
2. Remove Decision Table
3. Keep Data Objects and Tests

Create New Rule Template 新建规则模板 。⌘

• Create New -> New Rule Template

Create New Rule Template - Source 新建规则模板 - 源码 。⌘

Source should look like that:

package nppack;

rule "Progressive Discount Rule Template_3"
	dialect "mvel"
	when
		$sc : ShoppingCart( totalPrice >= 80000B , totalPrice < 99999999999B , discountRate == null )
	then
		modify( $sc ) {
				setDiscountRate( 0.15 )
		}
end

rule "Progressive Discount Rule Template_2"
	dialect "mvel"
	when
		$sc : ShoppingCart( totalPrice >= 50000B , totalPrice < 80000B , discountRate == null )
	then
		modify( $sc ) {
				setDiscountRate( 0.12 )
		}
end

rule "Progressive Discount Rule Template_1"
	dialect "mvel"
	when
		$sc : ShoppingCart( totalPrice >= 10000B , totalPrice < 50000B , discountRate == null )
	then
		modify( $sc ) {
				setDiscountRate( 0.1 )
		}
end

rule "Progressive Discount Rule Template_0"
	dialect "mvel"
	when
		$sc : ShoppingCart( totalPrice >= 0B , totalPrice < 10000B , discountRate == null )
	then
		modify( $sc ) {
				setDiscountRate( 0 )
		}
end

Testing ⌘

• Disable Decision Table
• Use the same test and in the Drools Guvnor - Decision Table section

测试 。

• 关闭决策表
• 在 Drools Guvnor - Decision Table 部分使用相同的测试