Drools Expert - stateless vs stateful

title

Drools Expert - stateless vs stateful

author

Bernard Szlachta (NobleProg Ltd)

Drools Expert - mvel - RHS - basic Training Materials

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Stateless vs stateful ⌘。

• Validate age of an applicant
• 下围棋

Go ⌘。

Stateless

1. Make a move (facts.add(new WhiteStone(3,5))) 走一步
2. run .execute(facts) method 执行execute方法
3. make sure that facts array and working memory are in sync 确定facts array的事实和工作内存里面的事实同步
4. make a move (facts.add(new BlackStone(3,4)))
5. run .execute(facts) method
6. make sure that facts array and working memory are in sync

Stateful

1. Make a move (ks.insert(new WhiteStone(3,5)))
2. run .fireAllRules() method
3. make a move (ks.insert(new BlackStone(3,4)))
4. run .fireAllRules() method
5. when game ends run ks.dispose()