change configuration

pom.xml

@@ -13,6 +13,17 @@
         <artifactId>spring-boot-starter-parent</artifactId>
         <version>2.2.6.RELEASE</version>
     </parent>
+    <dependencyManagement>
+        <dependencies>
+            <dependency>
+                <groupId>org.drools</groupId>
+                <artifactId>drools-bom</artifactId>
+                <type>pom</type>
+                <version>7.46.0.Final</version>
+                <scope>import</scope>
+            </dependency>
+        </dependencies>
+    </dependencyManagement>
 
     <dependencies>
         <dependency>
@@ -202,6 +213,15 @@
             <scope>test</scope>
         </dependency>
 
+        <dependency>
+            <groupId>org.kie</groupId>
+            <artifactId>kie-api</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.drools</groupId>
+            <artifactId>drools-compiler</artifactId>
+            <scope>runtime</scope>
+        </dependency>
     </dependencies>
 
 

src/main/java/com/other/ruleengine/HelloWorld.java

@@ -0,0 +1,100 @@
+package com.other.ruleengine;
+
+import org.kie.api.KieServices;
+import org.kie.api.event.rule.DebugAgendaEventListener;
+import org.kie.api.event.rule.DebugRuleRuntimeEventListener;
+import org.kie.api.logger.KieRuntimeLogger;
+import org.kie.api.runtime.KieContainer;
+import org.kie.api.runtime.KieSession;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class HelloWorld {
+
+    public static final void main(final String[] args) {
+        // From the kie services, a container is created from the classpath
+        KieServices ks = KieServices.get();
+
+        KieContainer kc = ks.getKieClasspathContainer();
+
+        execute( ks, kc );
+    }
+
+    public static void execute( KieServices ks, KieContainer kc ) {
+        // From the container, a session is created based on
+        // its definition and configuration in the META-INF/kmodule.xml file
+        KieSession ksession = kc.newKieSession("HelloWorldKS");
+
+        // Once the session is created, the application can interact with it
+        // In this case it is setting a global as defined in the
+        // org/drools/examples/helloworld/HelloWorld.drl file
+        ksession.setGlobal( "list", new ArrayList<Object>() );
+
+        // The application can also setup listeners
+        ksession.addEventListener( new DebugAgendaEventListener() );
+        ksession.addEventListener( new DebugRuleRuntimeEventListener() );
+
+        // Set up a file based audit logger
+        KieRuntimeLogger logger = ks.getLoggers().newFileLogger( ksession, "./helloworld" );
+
+        // To set up a ThreadedFileLogger, so that the audit view reflects events whilst debugging,
+        // uncomment the next line
+        // KieRuntimeLogger logger = ks.getLoggers().newThreadedFileLogger( ksession, "./helloworld", 1000 );
+
+        // The application can insert facts into the session
+        final Message message = new Message();
+        message.setMessage( "Hello World" );
+        message.setStatus( Message.HELLO );
+        ksession.insert( message );
+
+        // and fire the rules
+        ksession.fireAllRules();
+
+        // Close logger
+        logger.close();
+
+        // and then dispose the session
+        ksession.dispose();
+    }
+
+    public static class Message {
+        public static final int HELLO   = 0;
+        public static final int GOODBYE = 1;
+
+        private String          message;
+
+        private int             status;
+
+        public Message() {
+
+        }
+
+        public String getMessage() {
+            return this.message;
+        }
+
+        public void setMessage(final String message) {
+            this.message = message;
+        }
+
+        public int getStatus() {
+            return this.status;
+        }
+
+        public void setStatus(final int status) {
+            this.status = status;
+        }
+
+        public static Message doSomething(Message message) {
+            return message;
+        }
+
+        public boolean isSomething(String msg,
+                                   List<Object> list) {
+            list.add( this );
+            return this.message.equals( msg );
+        }
+    }
+
+}

src/main/resources/META-INF/kmodule.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<kmodule xmlns="http://www.drools.org/xsd/kmodule">
+    <kbase name="rules">
+        <ksession name="HelloWorldKS"/>
+    </kbase>
+
+</kmodule>

src/main/resources/application.yml

@@ -23,7 +23,7 @@ spring:
       minIdle: 1
       initialSize: 1
       poolPreparedStatements: true
-      url: jdbc:mysql://121.5.73.118:3306/tms?useUnicode=true&characterEncoding=utf-8&useSSL=false&allowPublicKeyRetrieval=true
+      url: jdbc:mysql://58.87.106.44:3306/tms?useUnicode=true&characterEncoding=utf-8&useSSL=false&allowPublicKeyRetrieval=true
       type: com.alibaba.druid.pool.DruidDataSource
       validationQuery: select 1
       maxOpenPreparedStatements: 300

src/main/resources/drools/HelloWorld.drl

@@ -0,0 +1,12 @@
+import com.other.ruleengine.HelloWorld
+
+dialect "mvel"
+
+rule "Hello World"
+  when
+    m : Message( status == Message.HELLO, message : message )
+  then
+    System.out.println( message );
+    modify ( m ) { message = "Goodbye cruel world",
+                   status = Message.GOODBYE };
+end