Drools规则执行顺序(二)

当规则空间中的事实(fact)有多个时,规则会匹配多个组合.

Rule rule = new Rule();
rule.setRuleName("test");
rule.setSalience(100);
ksession.insert(rule);
ksession.fireAllRules();

import test.Rule;

rule "test second"
	salience 20
	activation-group "test"
	no-loop true
	when
		$test: Rule(ruleName matches "test", salience >= 110)
	then 
		System.out.println($test + " the 1st");

end

rule "test first"
	salience 10
	no-loop true
	when
		$test: Rule( )
		$show : String( )
	then 
		System.out.println($test + " the 2nd");
		System.out.println($show + " the 2nd");
end

rule "test three"
	salience -10
	activation-group "test"
	no-loop true
	when
		$test: Rule( )
	then 
		System.out.println($test + " the 3rd");
		$test.setNo_loop(true);
		Rule temp = new Rule();
		temp.setRuleName("test");
		temp.setSalience(110);

		insert("show");
		insert("test");
		insert(temp);
end

测试结果

test.Rule@90d8ea the 3rd
test.Rule@17cec96 the 1st
test.Rule@17cec96 the 2nd
test the 2nd
test.Rule@17cec96 the 2nd
show the 2nd
test.Rule@90d8ea the 2nd
test the 2nd
test.Rule@90d8ea the 2nd
show the 2nd