Merge pull request #9411 from vpavic:improve-quartz-support

* pr/9411:
  Polish contribution
  Ensure `QuartzDatabaseInitializer` is initialized before `Scheduler`

spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/quartz/QuartzAutoConfiguration.java

@@ -29,6 +29,7 @@ import org.quartz.Scheduler;
 import org.quartz.Trigger;
 
 import org.springframework.beans.factory.ObjectProvider;
+import org.springframework.boot.autoconfigure.AbstractDependsOnBeanFactoryPostProcessor;
 import org.springframework.boot.autoconfigure.AutoConfigureAfter;
 import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
@@ -87,14 +88,6 @@ public class QuartzAutoConfiguration {
 		this.applicationContext = applicationContext;
 	}
 
-	@Bean
-	@ConditionalOnSingleCandidate(DataSource.class)
-	@ConditionalOnMissingBean
-	public QuartzDatabaseInitializer quartzDatabaseInitializer(DataSource dataSource,
-			ResourceLoader resourceLoader) {
-		return new QuartzDatabaseInitializer(dataSource, resourceLoader, this.properties);
-	}
-
 	@Bean
 	@ConditionalOnMissingBean
 	public SchedulerFactoryBean quartzScheduler() {
@@ -155,6 +148,28 @@ public class QuartzAutoConfiguration {
 			};
 		}
 
+		@Bean
+		@ConditionalOnMissingBean
+		public QuartzDatabaseInitializer quartzDatabaseInitializer(DataSource dataSource,
+				ResourceLoader resourceLoader, QuartzProperties properties) {
+			return new QuartzDatabaseInitializer(dataSource, resourceLoader, properties);
+		}
+
+		@Bean
+		public static DatabaseInitializerSchedulerDependencyPostProcessor databaseInitializerSchedulerDependencyPostProcessor() {
+			return new DatabaseInitializerSchedulerDependencyPostProcessor();
+		}
+
+		private static class DatabaseInitializerSchedulerDependencyPostProcessor
+				extends AbstractDependsOnBeanFactoryPostProcessor {
+
+			DatabaseInitializerSchedulerDependencyPostProcessor() {
+				super(Scheduler.class, SchedulerFactoryBean.class,
+						"quartzDatabaseInitializer");
+			}
+
+		}
+
 	}
 
 }

spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/quartz/QuartzAutoConfigurationTests.java

@@ -50,11 +50,13 @@ import org.springframework.context.ConfigurableApplicationContext;
 import org.springframework.context.annotation.AnnotationConfigApplicationContext;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
 import org.springframework.core.env.Environment;
 import org.springframework.jdbc.core.JdbcTemplate;
 import org.springframework.scheduling.quartz.LocalDataSourceJobStore;
 import org.springframework.scheduling.quartz.LocalTaskExecutorThreadPool;
 import org.springframework.scheduling.quartz.QuartzJobBean;
+import org.springframework.util.Assert;
 import org.springframework.util.ObjectUtils;
 
 import static org.assertj.core.api.Assertions.assertThat;
@@ -174,7 +176,7 @@ public class QuartzAutoConfigurationTests {
 
 	@Test
 	public void withCustomizer() throws Exception {
-		load(QuartzCustomConfig.class);
+		load(QuartzCustomConfiguration.class);
 		assertThat(this.context.getBeansOfType(Scheduler.class)).hasSize(1);
 		Scheduler scheduler = this.context.getBean(Scheduler.class);
 		assertThat(scheduler.getSchedulerName()).isEqualTo("fooScheduler");
@@ -199,8 +201,14 @@ public class QuartzAutoConfigurationTests {
 		this.context = ctx;
 	}
 
+	@Import(ComponentThatUsesScheduler.class)
 	@Configuration
-	protected static class QuartzJobsConfiguration {
+	protected static class BaseQuartzConfiguration {
+
+	}
+
+	@Configuration
+	protected static class QuartzJobsConfiguration extends BaseQuartzConfiguration {
 
 		@Bean
 		public JobDetail fooJob() {
@@ -217,7 +225,7 @@ public class QuartzAutoConfigurationTests {
 	}
 
 	@Configuration
-	protected static class QuartzFullConfiguration {
+	protected static class QuartzFullConfiguration extends BaseQuartzConfiguration {
 
 		@Bean
 		public JobDetail fooJob() {
@@ -237,7 +245,7 @@ public class QuartzAutoConfigurationTests {
 	}
 
 	@Configuration
-	protected static class QuartzCalendarsConfiguration {
+	protected static class QuartzCalendarsConfiguration extends BaseQuartzConfiguration {
 
 		@Bean
 		public Calendar weekly() {
@@ -252,7 +260,7 @@ public class QuartzAutoConfigurationTests {
 	}
 
 	@Configuration
-	protected static class QuartzExecutorConfiguration {
+	protected static class QuartzExecutorConfiguration extends BaseQuartzConfiguration {
 
 		@Bean
 		public Executor executor() {
@@ -262,7 +270,7 @@ public class QuartzAutoConfigurationTests {
 	}
 
 	@Configuration
-	protected static class QuartzCustomConfig {
+	protected static class QuartzCustomConfiguration extends BaseQuartzConfiguration {
 
 		@Bean
 		public SchedulerFactoryBeanCustomizer customizer() {
@@ -272,6 +280,17 @@ public class QuartzAutoConfigurationTests {
 
 	}
 
+	public static class ComponentThatUsesScheduler {
+
+		private Scheduler scheduler;
+
+		public ComponentThatUsesScheduler(Scheduler scheduler) {
+			Assert.notNull(scheduler, "Scheduler must not be null");
+			this.scheduler = scheduler;
+		}
+
+	}
+
 	public static class FooJob extends QuartzJobBean {
 
 		@Autowired

spring-boot-samples/spring-boot-sample-quartz/src/main/java/sample/quartz/SampleQuartzApplication.java

@@ -35,9 +35,8 @@ public class SampleQuartzApplication {
 
 	@Bean
 	public JobDetail sampleJobDetail() {
-		return JobBuilder.newJob().ofType(SampleJob.class).withIdentity("sampleJob")
-				.usingJobData("name", "World")
-				.storeDurably().build();
+		return JobBuilder.newJob(SampleJob.class).withIdentity("sampleJob")
+				.usingJobData("name", "World").storeDurably().build();
 	}
 
 	@Bean