chapter7 add rule template array demo

drools-lesson2/src/main/java/com/secbro2/drools/demo/BaseDemo.java

@@ -1,8 +1,14 @@
 package com.secbro2.drools.demo;
 
 import org.kie.api.KieServices;
+import org.kie.api.builder.Message;
+import org.kie.api.builder.Results;
+import org.kie.api.io.ResourceType;
 import org.kie.api.runtime.KieContainer;
 import org.kie.api.runtime.KieSession;
+import org.kie.internal.utils.KieHelper;
+
+import java.util.List;
 
 /**
  * @author zzs
@@ -20,4 +26,24 @@ protected static KieSession getKieSession(String sessionName) {
 		KieContainer container = kieServices.getKieClasspathContainer();
 		return container.newKieSession(sessionName);
 	}
+
+	protected static KieSession getKieSessionByDrl(String drlContent) {
+
+		KieHelper kieHelper = new KieHelper();
+		kieHelper.addContent(drlContent, ResourceType.DRL);
+
+		Results verify = kieHelper.verify();
+		boolean hasMessages = verify.hasMessages(Message.Level.WARNING, Message.Level.ERROR);
+		if (hasMessages) {
+			List<Message> messages = verify.getMessages(Message.Level.WARNING, Message.Level.ERROR);
+			for (Message message : messages) {
+				System.out.println("ERROR : " + message.getText());
+			}
+
+			throw new RuntimeException("verify has errors!");
+		}
+
+		return kieHelper.build().newKieSession();
+	}
+
 }

drools-lesson2/src/main/java/com/secbro2/drools/demo/RuleTemplateArrayDemo.java

@@ -0,0 +1,41 @@
+package com.secbro2.drools.demo;
+
+import org.drools.template.DataProvider;
+import org.drools.template.DataProviderCompiler;
+import org.drools.template.objects.ArrayDataProvider;
+import org.kie.api.runtime.KieSession;
+
+import java.io.InputStream;
+
+/**
+ * @author zzs
+ */
+public class RuleTemplateArrayDemo extends BaseDemo {
+
+
+	public static void main(String[] args) {
+
+		InputStream template = RuleTemplateArrayDemo.class.getResourceAsStream("/com/template/template.drt");
+
+		DataProvider dataProvider = new ArrayDataProvider(new String[][]{
+				{"1", "Tom"}, {"2", "Lucy"}
+		});
+
+		DataProviderCompiler compiler = new DataProviderCompiler();
+
+		String drl = compiler.compile(dataProvider, template);
+
+		KieSession kieSession = getKieSessionByDrl(drl);
+
+		Person person = new Person(1,"");
+
+		kieSession.insert(person);
+
+		kieSession.fireAllRules();
+
+		System.out.println("Person's username is " + person.getUsername());
+
+
+	}
+
+}