Polishing

spring-context/src/main/java/org/springframework/context/event/SimpleApplicationEventMulticaster.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2021 the original author or authors.
+ * Copyright 2002-2023 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -79,10 +79,11 @@ public class SimpleApplicationEventMulticaster extends AbstractApplicationEventM
 	 * to invoke each listener with.
 	 * <p>Default is equivalent to {@link org.springframework.core.task.SyncTaskExecutor},
 	 * executing all listeners synchronously in the calling thread.
-	 * <p>Consider specifying an asynchronous task executor here to not block the
-	 * caller until all listeners have been executed. However, note that asynchronous
-	 * execution will not participate in the caller's thread context (class loader,
-	 * transaction association) unless the TaskExecutor explicitly supports this.
+	 * <p>Consider specifying an asynchronous task executor here to not block the caller
+	 * until all listeners have been executed. However, note that asynchronous execution
+	 * will not participate in the caller's thread context (class loader, transaction context)
+	 * unless the TaskExecutor explicitly supports this.
+	 * @since 2.0
 	 * @see org.springframework.core.task.SyncTaskExecutor
 	 * @see org.springframework.core.task.SimpleAsyncTaskExecutor
 	 */
@@ -92,6 +93,7 @@ public class SimpleApplicationEventMulticaster extends AbstractApplicationEventM
 
 	/**
 	 * Return the current task executor for this multicaster.
+	 * @since 2.0
 	 */
 	@Nullable
 	protected Executor getTaskExecutor() {

spring-context/src/test/java/org/springframework/scheduling/annotation/EnableSchedulingTests.java

@@ -63,7 +63,7 @@ public class EnableSchedulingTests {
 		ctx = new AnnotationConfigApplicationContext(FixedRateTaskConfig.class);
 		assertThat(ctx.getBean(ScheduledTaskHolder.class).getScheduledTasks()).hasSize(2);
 
-		Thread.sleep(100);
+		Thread.sleep(110);
 		assertThat(ctx.getBean(AtomicInteger.class).get()).isGreaterThanOrEqualTo(10);
 	}
 
@@ -73,7 +73,7 @@ public class EnableSchedulingTests {
 		ctx = new AnnotationConfigApplicationContext(FixedRateTaskConfigSubclass.class);
 		assertThat(ctx.getBean(ScheduledTaskHolder.class).getScheduledTasks()).hasSize(2);
 
-		Thread.sleep(100);
+		Thread.sleep(110);
 		assertThat(ctx.getBean(AtomicInteger.class).get()).isGreaterThanOrEqualTo(10);
 	}
 
@@ -83,7 +83,7 @@ public class EnableSchedulingTests {
 		ctx = new AnnotationConfigApplicationContext(ExplicitSchedulerConfig.class);
 		assertThat(ctx.getBean(ScheduledTaskHolder.class).getScheduledTasks()).hasSize(1);
 
-		Thread.sleep(100);
+		Thread.sleep(110);
 		assertThat(ctx.getBean(AtomicInteger.class).get()).isGreaterThanOrEqualTo(10);
 		assertThat(ctx.getBean(ExplicitSchedulerConfig.class).threadName).startsWith("explicitScheduler-");
 		assertThat(Arrays.asList(ctx.getDefaultListableBeanFactory().getDependentBeans("myTaskScheduler")).contains(
@@ -102,7 +102,7 @@ public class EnableSchedulingTests {
 		ctx = new AnnotationConfigApplicationContext(ExplicitScheduledTaskRegistrarConfig.class);
 		assertThat(ctx.getBean(ScheduledTaskHolder.class).getScheduledTasks()).hasSize(1);
 
-		Thread.sleep(100);
+		Thread.sleep(110);
 		assertThat(ctx.getBean(AtomicInteger.class).get()).isGreaterThanOrEqualTo(10);
 		assertThat(ctx.getBean(ExplicitScheduledTaskRegistrarConfig.class).threadName).startsWith("explicitScheduler1");
 	}
@@ -124,7 +124,7 @@ public class EnableSchedulingTests {
 		ctx = new AnnotationConfigApplicationContext(
 				SchedulingEnabled_withAmbiguousTaskSchedulers_andSingleTask_disambiguatedByScheduledTaskRegistrar.class);
 
-		Thread.sleep(100);
+		Thread.sleep(110);
 		assertThat(ctx.getBean(ThreadAwareWorker.class).executedByThread).startsWith("explicitScheduler2-");
 	}
 
@@ -134,7 +134,7 @@ public class EnableSchedulingTests {
 		ctx = new AnnotationConfigApplicationContext(
 				SchedulingEnabled_withAmbiguousTaskSchedulers_andSingleTask_disambiguatedBySchedulerNameAttribute.class);
 
-		Thread.sleep(100);
+		Thread.sleep(110);
 		assertThat(ctx.getBean(ThreadAwareWorker.class).executedByThread).startsWith("explicitScheduler2-");
 	}
 
@@ -143,7 +143,7 @@ public class EnableSchedulingTests {
 	public void withTaskAddedVia_configureTasks() throws InterruptedException {
 		ctx = new AnnotationConfigApplicationContext(SchedulingEnabled_withTaskAddedVia_configureTasks.class);
 
-		Thread.sleep(100);
+		Thread.sleep(110);
 		assertThat(ctx.getBean(ThreadAwareWorker.class).executedByThread).startsWith("taskScheduler-");
 	}
 
@@ -152,7 +152,7 @@ public class EnableSchedulingTests {
 	public void withTriggerTask() throws InterruptedException {
 		ctx = new AnnotationConfigApplicationContext(TriggerTaskConfig.class);
 
-		Thread.sleep(100);
+		Thread.sleep(110);
 		assertThat(ctx.getBean(AtomicInteger.class).get()).isGreaterThan(1);
 	}
 

spring-r2dbc/src/main/java/org/springframework/r2dbc/connection/ConnectionFactoryUtils.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2022 the original author or authors.
+ * Copyright 2002-2023 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -85,7 +85,7 @@ public abstract class ConnectionFactoryUtils {
 	 */
 	public static Mono<Connection> getConnection(ConnectionFactory connectionFactory) {
 		return doGetConnection(connectionFactory)
-				.onErrorMap(e -> new DataAccessResourceFailureException("Failed to obtain R2DBC Connection", e));
+				.onErrorMap(ex -> new DataAccessResourceFailureException("Failed to obtain R2DBC Connection", ex));
 	}
 
 	/**
@@ -124,17 +124,17 @@ public abstract class ConnectionFactoryUtils {
 						holderToUse.setConnection(conn);
 					}
 					holderToUse.requested();
-					synchronizationManager
-							.registerSynchronization(new ConnectionSynchronization(holderToUse, connectionFactory));
+					synchronizationManager.registerSynchronization(
+							new ConnectionSynchronization(holderToUse, connectionFactory));
 					holderToUse.setSynchronizedWithTransaction(true);
 					if (holderToUse != conHolder) {
 						synchronizationManager.bindResource(connectionFactory, holderToUse);
 					}
 				})      // Unexpected exception from external delegation call -> close Connection and rethrow.
-				.onErrorResume(e -> releaseConnection(connection, connectionFactory).then(Mono.error(e))));
+				.onErrorResume(ex -> releaseConnection(connection, connectionFactory).then(Mono.error(ex))));
 			}
 			return con;
-		}).onErrorResume(NoTransactionException.class, e -> Mono.from(connectionFactory.create()));
+		}).onErrorResume(NoTransactionException.class, ex -> Mono.from(connectionFactory.create()));
 	}
 
 	/**
@@ -159,7 +159,7 @@ public abstract class ConnectionFactoryUtils {
 	 */
 	public static Mono<Void> releaseConnection(Connection con, ConnectionFactory connectionFactory) {
 		return doReleaseConnection(con, connectionFactory)
-				.onErrorMap(e -> new DataAccessResourceFailureException("Failed to close R2DBC Connection", e));
+				.onErrorMap(ex -> new DataAccessResourceFailureException("Failed to close R2DBC Connection", ex));
 	}
 
 	/**
@@ -171,15 +171,14 @@ public abstract class ConnectionFactoryUtils {
 	 * @see #doGetConnection
 	 */
 	public static Mono<Void> doReleaseConnection(Connection connection, ConnectionFactory connectionFactory) {
-		return TransactionSynchronizationManager.forCurrentTransaction()
-				.flatMap(synchronizationManager -> {
+		return TransactionSynchronizationManager.forCurrentTransaction().flatMap(synchronizationManager -> {
 			ConnectionHolder conHolder = (ConnectionHolder) synchronizationManager.getResource(connectionFactory);
 			if (conHolder != null && connectionEquals(conHolder, connection)) {
 				// It's the transactional Connection: Don't close it.
 				conHolder.released();
 			}
 			return Mono.from(connection.close());
-		}).onErrorResume(NoTransactionException.class, e -> Mono.from(connection.close()));
+		}).onErrorResume(NoTransactionException.class, ex -> Mono.from(connection.close()));
 	}
 
 	/**
@@ -268,7 +267,8 @@ public abstract class ConnectionFactoryUtils {
 		Connection heldCon = conHolder.getConnection();
 		// Explicitly check for identity too: for Connection handles that do not implement
 		// "equals" properly).
-		return (heldCon == passedInCon || heldCon.equals(passedInCon) || getTargetConnection(heldCon).equals(passedInCon));
+		return (heldCon == passedInCon || heldCon.equals(passedInCon) ||
+				getTargetConnection(heldCon).equals(passedInCon));
 	}
 
 	/**

spring-tx/src/main/java/org/springframework/transaction/reactive/TransactionContextManager.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2021 the original author or authors.
+ * Copyright 2002-2023 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -46,10 +46,10 @@ public abstract class TransactionContextManager {
 	 * transactional context holder. Context retrieval fails with NoTransactionException
 	 * if no context or context holder is registered.
 	 * @return the current {@link TransactionContext}
-	 * @throws NoTransactionException if no TransactionContext was found in the subscriber context
-	 * or no context found in a holder
+	 * @throws NoTransactionException if no TransactionContext was found in the
+	 * subscriber context or no context found in a holder
 	 */
-	public static Mono<TransactionContext> currentContext() throws NoTransactionException {
+	public static Mono<TransactionContext> currentContext() {
 		return Mono.deferContextual(ctx -> {
 			if (ctx.hasKey(TransactionContext.class)) {
 				return Mono.just(ctx.get(TransactionContext.class));

spring-tx/src/main/java/org/springframework/transaction/reactive/TransactionSynchronizationManager.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2021 the original author or authors.
+ * Copyright 2002-2023 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -32,8 +32,8 @@ import org.springframework.util.Assert;
 
 /**
  * Central delegate that manages resources and transaction synchronizations per
- * subscriber context.
- * To be used by resource management code but not by typical application code.
+ * subscriber context. To be used by resource management code but not by typical
+ * application code.
  *
  * <p>Supports one resource per key without overwriting, that is, a resource needs
  * to be removed before a new one can be set for the same key.
@@ -73,6 +73,7 @@ public class TransactionSynchronizationManager {
 
 
 	public TransactionSynchronizationManager(TransactionContext transactionContext) {
+		Assert.notNull(transactionContext, "TransactionContext must not be null");
 		this.transactionContext = transactionContext;
 	}
 
@@ -88,10 +89,11 @@ public class TransactionSynchronizationManager {
 		return TransactionContextManager.currentContext().map(TransactionSynchronizationManager::new);
 	}
 
+
 	/**
-	 * Check if there is a resource for the given key bound to the current thread.
+	 * Check if there is a resource for the given key bound to the current context.
 	 * @param key the key to check (usually the resource factory)
-	 * @return if there is a value bound to the current thread
+	 * @return if there is a value bound to the current context
 	 */
 	public boolean hasResource(Object key) {
 		Object actualKey = TransactionSynchronizationUtils.unwrapResourceIfNecessary(key);
@@ -100,9 +102,9 @@ public class TransactionSynchronizationManager {
 	}
 
 	/**
-	 * Retrieve a resource for the given key that is bound to the current thread.
+	 * Retrieve a resource for the given key that is bound to the current context.
 	 * @param key the key to check (usually the resource factory)
-	 * @return a value bound to the current thread (usually the active
+	 * @return a value bound to the current context (usually the active
 	 * resource object), or {@code null} if none
 	 */
 	@Nullable

spring-tx/src/test/java/org/springframework/transaction/event/TransactionalEventListenerTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2020 the original author or authors.
+ * Copyright 2002-2023 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -57,6 +57,7 @@ import static org.springframework.transaction.event.TransactionPhase.BEFORE_COMM
 
 /**
  * Integration tests for {@link TransactionalEventListener} support
+ * with thread-bound transactions.
  *
  * @author Stephane Nicoll
  * @author Sam Brannen
@@ -87,7 +88,6 @@ public class TransactionalEventListenerTests {
 			getEventCollector().assertEvents(EventCollector.IMMEDIATELY, "test");
 			getEventCollector().assertTotalEventsCount(1);
 			return null;
-
 		});
 		getEventCollector().assertEvents(EventCollector.IMMEDIATELY, "test");
 		getEventCollector().assertTotalEventsCount(1);
@@ -115,7 +115,6 @@ public class TransactionalEventListenerTests {
 			getContext().publishEvent("test");
 			getEventCollector().assertNoEventReceived();
 			return null;
-
 		});
 		getEventCollector().assertEvents(EventCollector.AFTER_COMPLETION, "test");
 		getEventCollector().assertTotalEventsCount(1); // After rollback not invoked
@@ -129,7 +128,6 @@ public class TransactionalEventListenerTests {
 			getEventCollector().assertNoEventReceived();
 			status.setRollbackOnly();
 			return null;
-
 		});
 		getEventCollector().assertEvents(EventCollector.AFTER_COMPLETION, "test");
 		getEventCollector().assertTotalEventsCount(1); // After rollback not invoked
@@ -142,7 +140,6 @@ public class TransactionalEventListenerTests {
 			getContext().publishEvent("test");
 			getEventCollector().assertNoEventReceived();
 			return null;
-
 		});
 		getEventCollector().assertEvents(EventCollector.AFTER_COMMIT, "test");
 		getEventCollector().assertTotalEventsCount(1); // After rollback not invoked
@@ -307,13 +304,12 @@ public class TransactionalEventListenerTests {
 	}
 
 	@Test
-	public void afterCommitMetaAnnotation() throws Exception {
+	public void afterCommitMetaAnnotation() {
 		load(AfterCommitMetaAnnotationTestListener.class);
 		this.transactionTemplate.execute(status -> {
 			getContext().publishEvent("test");
 			getEventCollector().assertNoEventReceived();
 			return null;
-
 		});
 		getEventCollector().assertEvents(EventCollector.AFTER_COMMIT, "test");
 		getEventCollector().assertTotalEventsCount(1);
@@ -326,7 +322,6 @@ public class TransactionalEventListenerTests {
 			getContext().publishEvent("SKIP");
 			getEventCollector().assertNoEventReceived();
 			return null;
-
 		});
 		getEventCollector().assertNoEventReceived();
 	}

spring-webmvc/src/main/java/org/springframework/web/servlet/handler/MappedInterceptor.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2021 the original author or authors.
+ * Copyright 2002-2023 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -61,7 +61,7 @@ import org.springframework.web.util.pattern.PatternParseException;
  */
 public final class MappedInterceptor implements HandlerInterceptor {
 
-	private static PathMatcher defaultPathMatcher = new AntPathMatcher();
+	private static final PathMatcher defaultPathMatcher = new AntPathMatcher();
 
 
 	@Nullable