Drools规则插入新事实并激发其他规则动态-Java 学习之路

我是drools和kie-server的新手 . 我遇到了如何通过触发规则RHS（然后是动作）在工作记忆中插入新事实然后通过这些动态插入事实激活其他规则的问题 .

我期望的是当BaseFeature从外部插入工作内存并激活RuleOne时，在RuleOne中“然后”它将插入新的事实RuleResult，并期望激活RuleTwo，但它不会激活RuleTwo，只是RuleOne被激活，那是我做错了吗？

在这里，我有两条规则和一组事实：

事实定义：

public class AppResult implements java.io.Serializable
{
   static final long serialVersionUID = 1L;

   private java.lang.String key;
   private java.lang.String value;

   //getters and setters ...
}


public class BaseFeature implements java.io.Serializable
{

   static final long serialVersionUID = 1L;

   private int age;

   //getters and setters ...
}

public class RuleResult implements java.io.Serializable
{

   static final long serialVersionUID = 1L;

   private java.lang.String ruleName;
   private java.lang.Long score;
   private boolean state;

   //getters and setters ...
}

规则定义：

rule "RuleOne"
    dialect "mvel"
    salience 100
    no-loop true
    lock-on-active true
    when
        $b : BaseFeature( age < 22 || age > 40 )
    then
        RuleResult $r = new RuleResult();
        $r.setRuleName( "RuleOne" );
        $r.setState( false );
        insertLogical( $r );
end

rule "RuleTwo"
    dialect "mvel"
    no-loop false
    lock-on-active true
    salience 10
    when
        $r : RuleResult( ruleName == "RuleOne" , state == false )
        $a : AppResult( )
    then
        $a.setKey( "PASS" );
        $a.setValue( "false" );
end

如何实现fire-rules插入新事实并激发其他规则动态？预先感谢！

我正在使用kie-server（6.5 Final）进行测试，POST和Reponse如下：

POST：

{
    "lookup": "RuleChainTestStateless",
    "commands": [
    {
        "insert": {
            "return-object": false,
            "object": {
                "com.qf.rulechaintest.BaseFeature": {
                    "age": "10"
                }
            }
        }
    },

    {
        "insert": {
            "return-object": true,
            "out-identifier": "AppResult",
            "object": {
                "com.qf.rulechaintest.AppResult": {

                }
            }
        }
    },
    {
        "fire-all-rules": ""
    },
    {
            "get-objects":{
                "out-identifier":"allFactsInWrokingMemory"
            }
    }

    ]
}

REPONSE：

{
  "type": "SUCCESS",
  "msg": "Container RuleChainTest1.1 successfully called.",
  "result": {
    "execution-results": {
      "results": [
        {
          "key": "",
          "value": 1
        },
        {
          "key": "AppResult",
          "value": {
            "com.qf.rulechaintest.AppResult": {
              "key": null,
              "value": null
            }
          }
        },
        {
          "key": "allFactsInWrokingMemory",
          "value": [
            {
              "com.qf.rulechaintest.BaseFeature": {
                "age": 10
              }
            },
            {
              "com.qf.rulechaintest.AppResult": {
                "key": null,
                "value": null
              }
            },
            {
              "com.qf.rulechaintest.RuleResult": {
                "ruleName": "RuleOne",
                "score": null,
                "state": false
              }
            }
          ]
        }
      ],
      "facts": [
        {
          "key": "AppResult",
          "value": {
            "org.drools.core.common.DefaultFactHandle": {
              "external-form": "0:2:1542374590:1542374590:2:DEFAULT:NON_TRAIT:com.qf.rulechaintest.AppResult"
            }
          }
        }
      ]
    }
  }
}

请注意响应：

"com.qf.rulechaintest.AppResult": {
              "key": null,
              "value": null
            }

它的期望是什么：

"com.qf.rulechaintest.AppResult": {
                  "key": "PASS",
                  "value": "false"
                }

3 回答

0
如果您不知道这些规则属性的用途，则应阅读文档 . 然后，我想，你会发现你可以删除它们 .
```
salience 100 or 10
no-loop true or false
lock-on-active true
```
回复于 2024-05-04T10:33:24+08:00
0

我同意你应该阅读规则属性的含义（参见文档[1]中的内容） . 我认为这是因为你对规则有锁定活动 . 请查看我链接的文档 .

[1] https://docs.jboss.org/drools/release/6.5.0.Final/drools-docs/html/ch08.html#d0e9196

回复于 2024-05-04T10:33:24+08:00

尝试使用更新功能“

然后

RuleResult $r = new RuleResult();
    $r.setRuleName( "RuleOne" );
    $r.setState( false );
    update ( $r );

“

回复于 2024-05-04T10:33:24+08:00

Drools规则插入新事实并激发其他规则动态

3 回答

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