Added sample code for Spring events and Spring profiles.

2014-10-01 14:30:11 +05:30
parent fa4240311d
commit b5cc62b50e
25 changed files with 458 additions and 2 deletions
@@ -0,0 +1,5 @@
+package org.baeldung.profiles;
+
+public interface DatasourceConfig {
+    public void setup();
+}
@@ -0,0 +1,15 @@
+package org.baeldung.profiles;
+
+import org.springframework.context.annotation.Profile;
+import org.springframework.stereotype.Component;
+
+@Component
+@Profile("dev")
+public class DevDatasourceConfig implements DatasourceConfig {
+
+    @Override
+    public void setup() {
+        System.out.println("Setting up datasource for DEV environment. ");
+    }
+
+}
@@ -0,0 +1,15 @@
+package org.baeldung.profiles;
+
+import org.springframework.context.annotation.Profile;
+import org.springframework.stereotype.Component;
+
+@Component
+@Profile("production")
+public class ProductionDatasourceConfig implements DatasourceConfig {
+
+    @Override
+    public void setup() {
+        System.out.println("Setting up datasource for PRODUCTION environment. ");
+    }
+
+}
@@ -0,0 +1,10 @@
+package org.baeldung.profiles;
+
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+@ComponentScan("org.baeldung.profiles")
+public class SpringProfilesConfig {
+
+}
@@ -0,0 +1,52 @@
+package org.baeldung.scheduling;
+
+import org.springframework.scheduling.annotation.Scheduled;
+import org.springframework.stereotype.Component;
+
+@Component("scheduledAnnotationExample")
+public class ScheduledAnnotationExample {
+
+    @Scheduled(fixedDelay = 1000)
+    public void scheduleFixedDelayTask() {
+        System.out.println("Fixed delay task - " + System.currentTimeMillis() / 1000);
+    }
+
+    @Scheduled(fixedDelayString = "${fixedDelay.in.milliseconds}")
+    public void scheduleFixedDelayTaskUsingExpression() {
+        System.out.println("Fixed delay task - " + System.currentTimeMillis() / 1000);
+    }
+
+    @Scheduled(fixedDelay = 1000, initialDelay = 2000)
+    public void scheduleFixedDelayWithInitialDelayTask() {
+        System.out.println("Fixed delay task with one second initial delay - " + System.currentTimeMillis() / 1000);
+    }
+
+    @Scheduled(fixedRate = 1000)
+    public void scheduleFixedRateTask() {
+        System.out.println("Fixed rate task - " + System.currentTimeMillis() / 1000);
+    }
+
+    @Scheduled(fixedRateString = "${fixedRate.in.milliseconds}")
+    public void scheduleFixedRateTaskUsingExpression() {
+        System.out.println("Fixed rate task - " + System.currentTimeMillis() / 1000);
+    }
+
+    @Scheduled(fixedDelay = 1000, initialDelay = 100)
+    public void scheduleFixedRateWithInitialDelayTask() {
+        System.out.println("Fixed delay task with one second initial delay - " + System.currentTimeMillis() / 1000);
+    }
+
+    /**
+     * Scheduled task is executed at 10:15 AM on the 15th day of every month
+     */
+    @Scheduled(cron = "0 15 10 15 * ?")
+    public void scheduleTaskUsingCronExpression() {
+        System.out.println("schedule tasks using cron expressions - " + System.currentTimeMillis() / 1000);
+    }
+
+    @Scheduled(cron = "${cron.expression}")
+    public void scheduleTaskUsingExternalizedCronExpression() {
+        System.out.println("schedule tasks using externalized cron expressions - " + System.currentTimeMillis() / 1000);
+    }
+
+}
@@ -0,0 +1,16 @@
+package org.baeldung.scheduling;
+
+public class SchedulingWithXmlConfig {
+
+    public void scheduleFixedDelayTask() {
+        System.out.println("Fixed delay task - " + System.currentTimeMillis() / 1000);
+    }
+
+    public void scheduleFixedRateTask() {
+        System.out.println("Fixed rate task - " + System.currentTimeMillis() / 1000);
+    }
+
+    public void scheduleTaskUsingCronExpression() {
+        System.out.println("schedule tasks using cron expressions - " + System.currentTimeMillis() / 1000);
+    }
+}
@@ -0,0 +1,20 @@
+package org.baeldung.scheduling;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.PropertySource;
+import org.springframework.context.support.PropertySourcesPlaceholderConfigurer;
+import org.springframework.scheduling.annotation.EnableScheduling;
+
+@Configuration
+@EnableScheduling
+@ComponentScan("org.baeldung.scheduling")
+@PropertySource("classpath:springScheduled.properties")
+public class SpringSchedulingConfig {
+
+    @Bean
+    public static PropertySourcesPlaceholderConfigurer propertySourcesPlaceholderConfigurer() {
+        return new PropertySourcesPlaceholderConfigurer();
+    }
+}
@@ -0,0 +1,20 @@
+package org.baeldung.springevents.asynchronous;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.event.ApplicationEventMulticaster;
+import org.springframework.context.event.SimpleApplicationEventMulticaster;
+import org.springframework.core.task.SimpleAsyncTaskExecutor;
+
+@Configuration
+@ComponentScan("org.baeldung.springevents.synchronous")
+public class AsynchronousSpringEventsConfig {
+
+    @Bean(name = "applicationEventMulticaster")
+    public static ApplicationEventMulticaster simpleApplicationEventMulticaster() {
+        final SimpleApplicationEventMulticaster simpleApplicationEventMulticaster = new SimpleApplicationEventMulticaster();
+        simpleApplicationEventMulticaster.setTaskExecutor(new SimpleAsyncTaskExecutor());
+        return simpleApplicationEventMulticaster;
+    }
+}
@@ -0,0 +1,15 @@
+package org.baeldung.springevents.synchronous;
+
+import org.springframework.context.ApplicationListener;
+import org.springframework.context.event.ContextRefreshedEvent;
+import org.springframework.stereotype.Component;
+
+@Component
+public class ContextRefreshedListener implements ApplicationListener<ContextRefreshedEvent> {
+
+    @Override
+    public void onApplicationEvent(final ContextRefreshedEvent cse) {
+        System.out.println("Handling context re-freshed event. ");
+    }
+
+}
@@ -0,0 +1,19 @@
+package org.baeldung.springevents.synchronous;
+
+import org.springframework.context.ApplicationEvent;
+
+public class CustomSpringEvent extends ApplicationEvent {
+    private static final long serialVersionUID = -8053143381029977953L;
+
+    private String message;
+
+    public CustomSpringEvent(final Object source, final String message) {
+        super(source);
+        this.message = message;
+    }
+
+    public String getMessage() {
+        return message;
+    }
+
+}
@@ -0,0 +1,14 @@
+package org.baeldung.springevents.synchronous;
+
+import org.springframework.context.ApplicationListener;
+import org.springframework.stereotype.Component;
+
+@Component
+public class CustomSpringEventListener implements ApplicationListener<CustomSpringEvent> {
+
+    @Override
+    public void onApplicationEvent(final CustomSpringEvent event) {
+        System.out.println("Received spring custom event - " + event.getMessage());
+    }
+
+}
@@ -0,0 +1,18 @@
+package org.baeldung.springevents.synchronous;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.ApplicationEventPublisher;
+import org.springframework.stereotype.Component;
+
+@Component
+public class CustomSpringEventPublisher {
+
+    @Autowired
+    private ApplicationEventPublisher applicationEventPublisher;
+
+    public void publishEvent(final String message) {
+        System.out.println("Publishing custom event. ");
+        final CustomSpringEvent customSpringEvent = new CustomSpringEvent(this, message);
+        applicationEventPublisher.publishEvent(customSpringEvent);
+    }
+}
@@ -0,0 +1,10 @@
+package org.baeldung.springevents.synchronous;
+
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+@ComponentScan("org.baeldung.springevents.synchronous")
+public class SynchronousSpringEventsConfig {
+
+}