A

state_machines/jms_abstract_template_sample/build.gradle

@@ -0,0 +1,29 @@
+plugins {
+	id 'java'
+	id 'org.springframework.boot' version '3.5.3'
+	id 'io.spring.dependency-management' version '1.1.7'
+}
+
+group = 'click.kamil'
+version = '0.0.1-SNAPSHOT'
+
+java {
+	toolchain {
+		languageVersion = JavaLanguageVersion.of(21)
+	}
+}
+
+repositories {
+	mavenCentral()
+}
+
+dependencies {
+	implementation 'org.springframework.boot:spring-boot-starter'
+	implementation 'org.springframework.boot:spring-boot-starter-artemis'
+	implementation 'org.springframework.statemachine:spring-statemachine-starter:3.2.0'
+	compileOnly 'org.projectlombok:lombok'
+	annotationProcessor 'org.projectlombok:lombok'
+}
+
+bootJar { enabled = false }
+jar { enabled = true }

state_machines/jms_abstract_template_sample/src/main/java/click/kamil/examples/jmsabstract/AbstractAA.java

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+package click.kamil.examples.jmsabstract;
+
+import org.springframework.jms.annotation.JmsListener;
+
+/**
+ * Template-method JMS base: {@code @JmsListener} lives on the abstract type; subclasses
+ * implement {@link #doPMessage(String)}.
+ */
+public abstract class AbstractAA {
+
+    @JmsListener(destination = "orders.commands")
+    public void onMessage(String message) {
+        processMessage(message);
+    }
+
+    protected void processMessage(String message) {
+        doPMessage(message);
+    }
+
+    protected abstract void doPMessage(String message);
+}

state_machines/jms_abstract_template_sample/src/main/java/click/kamil/examples/jmsabstract/DocumentAA.java

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+package click.kamil.examples.jmsabstract;
+
+import org.springframework.statemachine.StateMachine;
+import org.springframework.stereotype.Component;
+
+@Component
+public class DocumentAA extends AbstractAA {
+
+    private final StateMachine<OrderStates, OrderEvents> stateMachine;
+
+    public DocumentAA(StateMachine<OrderStates, OrderEvents> stateMachine) {
+        this.stateMachine = stateMachine;
+    }
+
+    @Override
+    protected void doPMessage(String message) {
+        stateMachine.sendEvent(OrderEvents.SUBMIT);
+    }
+}

state_machines/jms_abstract_template_sample/src/main/java/click/kamil/examples/jmsabstract/JmsAbstractTemplateApplication.java

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+package click.kamil.examples.jmsabstract;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.jms.annotation.EnableJms;
+
+@SpringBootApplication
+@EnableJms
+public class JmsAbstractTemplateApplication {
+    public static void main(String[] args) {
+        SpringApplication.run(JmsAbstractTemplateApplication.class, args);
+    }
+}

state_machines/jms_abstract_template_sample/src/main/java/click/kamil/examples/jmsabstract/OrderAA.java

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+package click.kamil.examples.jmsabstract;
+
+import org.springframework.statemachine.StateMachine;
+import org.springframework.stereotype.Component;
+
+@Component
+public class OrderAA extends AbstractAA {
+
+    private final StateMachine<OrderStates, OrderEvents> stateMachine;
+
+    public OrderAA(StateMachine<OrderStates, OrderEvents> stateMachine) {
+        this.stateMachine = stateMachine;
+    }
+
+    @Override
+    protected void doPMessage(String message) {
+        stateMachine.sendEvent(OrderEvents.PAY);
+    }
+}

state_machines/jms_abstract_template_sample/src/main/java/click/kamil/examples/jmsabstract/OrderEvents.java

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+package click.kamil.examples.jmsabstract;
+
+public enum OrderEvents {
+    PAY, SUBMIT
+}

state_machines/jms_abstract_template_sample/src/main/java/click/kamil/examples/jmsabstract/OrderStateMachineConfig.java

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+package click.kamil.examples.jmsabstract;
+
+import org.springframework.context.annotation.Configuration;
+import org.springframework.statemachine.config.EnableStateMachine;
+import org.springframework.statemachine.config.StateMachineConfigurerAdapter;
+import org.springframework.statemachine.config.builders.StateMachineStateConfigurer;
+import org.springframework.statemachine.config.builders.StateMachineTransitionConfigurer;
+
+@Configuration
+@EnableStateMachine
+public class OrderStateMachineConfig extends StateMachineConfigurerAdapter<OrderStates, OrderEvents> {
+
+    @Override
+    public void configure(StateMachineStateConfigurer<OrderStates, OrderEvents> states) throws Exception {
+        states.withStates()
+                .initial(OrderStates.NEW)
+                .state(OrderStates.PAID)
+                .state(OrderStates.SUBMITTED);
+    }
+
+    @Override
+    public void configure(StateMachineTransitionConfigurer<OrderStates, OrderEvents> transitions) throws Exception {
+        transitions
+                .withExternal().source(OrderStates.NEW).target(OrderStates.PAID).event(OrderEvents.PAY)
+                .and()
+                .withExternal().source(OrderStates.NEW).target(OrderStates.SUBMITTED).event(OrderEvents.SUBMIT);
+    }
+}

state_machines/jms_abstract_template_sample/src/main/java/click/kamil/examples/jmsabstract/OrderStates.java

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+package click.kamil.examples.jmsabstract;
+
+public enum OrderStates {
+    NEW, PAID, SUBMITTED
+}