Polishing

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

@@ -302,13 +302,13 @@ public abstract class ConnectionFactoryUtils {
 	 * @return the innermost target Connection, or the passed-in one if not wrapped
 	 * @see Wrapped#unwrap()
 	 */
-	@SuppressWarnings({"rawtypes", "unchecked"})
+	@SuppressWarnings("unchecked")
 	public static Connection getTargetConnection(Connection con) {
-		Object conToUse = con;
+		Connection conToUse = con;
-		while (conToUse instanceof Wrapped wrapped) {
+		while (conToUse instanceof Wrapped<?>) {
-			conToUse = wrapped.unwrap();
+			conToUse = ((Wrapped<Connection>) conToUse).unwrap();
 		}
-		return (Connection) conToUse;
+		return conToUse;
 	}
 
 	/**

spring-r2dbc/src/main/java/org/springframework/r2dbc/connection/SingleConnectionFactory.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.
@@ -231,7 +231,7 @@ public class SingleConnectionFactory extends DelegatingConnectionFactory
 	 */
 	protected Connection getCloseSuppressingConnectionProxy(Connection target) {
 		return (Connection) Proxy.newProxyInstance(SingleConnectionFactory.class.getClassLoader(),
-				new Class<?>[] { Connection.class, Wrapped.class }, new CloseSuppressingInvocationHandler(target));
+				new Class<?>[] {Connection.class, Wrapped.class}, new CloseSuppressingInvocationHandler(target));
 	}
 
 

spring-r2dbc/src/main/java/org/springframework/r2dbc/core/DefaultDatabaseClient.java

@@ -186,7 +186,7 @@ final class DefaultDatabaseClient implements DatabaseClient {
 	 */
 	private static Connection createConnectionProxy(Connection con) {
 		return (Connection) Proxy.newProxyInstance(DatabaseClient.class.getClassLoader(),
-				new Class<?>[] { Connection.class, Wrapped.class },
+				new Class<?>[] {Connection.class, Wrapped.class},
 				new CloseSuppressingInvocationHandler(con));
 	}
 

spring-r2dbc/src/test/java/org/springframework/r2dbc/connection/R2dbcTransactionManagerUnitTests.java

@@ -70,7 +70,7 @@ class R2dbcTransactionManagerUnitTests {
 
 
 	@BeforeEach
-	@SuppressWarnings({"unchecked", "rawtypes"})
+	@SuppressWarnings({"rawtypes", "unchecked"})
 	void before() {
 		when(connectionFactoryMock.create()).thenReturn((Mono) Mono.just(connectionMock));
 		when(connectionMock.beginTransaction(any(io.r2dbc.spi.TransactionDefinition.class))).thenReturn(Mono.empty());

spring-r2dbc/src/test/java/org/springframework/r2dbc/connection/TransactionAwareConnectionFactoryProxyUnitTests.java

@@ -57,7 +57,7 @@ class TransactionAwareConnectionFactoryProxyUnitTests {
 
 
 	@BeforeEach
-	@SuppressWarnings({ "rawtypes", "unchecked" })
+	@SuppressWarnings({"rawtypes", "unchecked"})
 	void before() {
 		when(connectionFactoryMock.create()).thenReturn((Mono) Mono.just(connectionMock1),
 				(Mono) Mono.just(connectionMock2), (Mono) Mono.just(connectionMock3));

spring-r2dbc/src/test/java/org/springframework/r2dbc/connection/lookup/MapConnectionFactoryLookupUnitTests.java

@@ -34,13 +34,14 @@ public class MapConnectionFactoryLookupUnitTests {
 
 	private static final String CONNECTION_FACTORY_NAME = "connectionFactory";
 
+
 	@Test
 	public void getConnectionFactoriesReturnsUnmodifiableMap() {
 		MapConnectionFactoryLookup lookup = new MapConnectionFactoryLookup();
 		Map<String, ConnectionFactory> connectionFactories = lookup.getConnectionFactories();
 
-		assertThatThrownBy(() -> connectionFactories.put("",
+		assertThatThrownBy(() -> connectionFactories.put("", new DummyConnectionFactory()))
-				new DummyConnectionFactory())).isInstanceOf(UnsupportedOperationException.class);
+				.isInstanceOf(UnsupportedOperationException.class);
 	}
 
 	@Test
@@ -52,8 +53,8 @@ public class MapConnectionFactoryLookupUnitTests {
 		MapConnectionFactoryLookup lookup = new MapConnectionFactoryLookup();
 		lookup.setConnectionFactories(connectionFactories);
 
-		ConnectionFactory connectionFactory = lookup.getConnectionFactory(CONNECTION_FACTORY_NAME);
+		assertThat(lookup.getConnectionFactory(CONNECTION_FACTORY_NAME))
-		assertThat(connectionFactory).isNotNull().isSameAs(expectedConnectionFactory);
+				.isNotNull().isSameAs(expectedConnectionFactory);
 	}
 
 	@Test
@@ -67,12 +68,12 @@ public class MapConnectionFactoryLookupUnitTests {
 		lookup.setConnectionFactories(connectionFactories);
 		lookup.addConnectionFactory(CONNECTION_FACTORY_NAME, expectedConnectionFactory);
 
-		ConnectionFactory connectionFactory = lookup.getConnectionFactory(CONNECTION_FACTORY_NAME);
+		assertThat(lookup.getConnectionFactory(CONNECTION_FACTORY_NAME))
-		assertThat(connectionFactory).isNotNull().isSameAs(expectedConnectionFactory);
+				.isNotNull().isSameAs(expectedConnectionFactory);
 	}
 
 	@Test
-	@SuppressWarnings({ "unchecked", "rawtypes" })
+	@SuppressWarnings({"rawtypes", "unchecked"})
 	public void getConnectionFactoryWhereSuppliedMapHasNonConnectionFactoryTypeUnderSpecifiedKey() {
 		Map connectionFactories = new HashMap<>();
 		connectionFactories.put(CONNECTION_FACTORY_NAME, new Object());
@@ -86,8 +87,9 @@ public class MapConnectionFactoryLookupUnitTests {
 	public void getConnectionFactoryWhereSuppliedMapHasNoEntryForSpecifiedKey() {
 		MapConnectionFactoryLookup lookup = new MapConnectionFactoryLookup();
 
-		assertThatThrownBy(() -> lookup.getConnectionFactory(CONNECTION_FACTORY_NAME))
+		assertThatThrownBy(
-				.isInstanceOf(ConnectionFactoryLookupFailureException.class);
+				() -> lookup.getConnectionFactory(CONNECTION_FACTORY_NAME)).isInstanceOf(
+						ConnectionFactoryLookupFailureException.class);
 	}
 
 }

spring-r2dbc/src/test/java/org/springframework/r2dbc/core/NamedParameterUtilsUnitTests.java

@@ -84,8 +84,9 @@ public class NamedParameterUtilsUnitTests {
 	@Test
 	public void substituteObjectArray() {
 		MapBindParameterSource namedParams = new MapBindParameterSource(new HashMap<>());
-		namedParams.addValue("a", Arrays.asList(new Object[] { "Walter", "Heisenberg" },
+		namedParams.addValue("a",
-				new Object[] { "Walt Jr.", "Flynn" }));
+				Arrays.asList(new Object[] {"Walter", "Heisenberg"},
+				new Object[] {"Walt Jr.", "Flynn"}));
 
 		PreparedOperation<?> operation = NamedParameterUtils.substituteNamedParameters(
 				"xxx :a", BIND_MARKERS, namedParams);
@@ -96,8 +97,9 @@ public class NamedParameterUtilsUnitTests {
 	@Test
 	public void shouldBindObjectArray() {
 		MapBindParameterSource namedParams = new MapBindParameterSource(new HashMap<>());
-		namedParams.addValue("a", Arrays.asList(new Object[] { "Walter", "Heisenberg" },
+		namedParams.addValue("a",
-				new Object[] { "Walt Jr.", "Flynn" }));
+				Arrays.asList(new Object[] {"Walter", "Heisenberg"},
+				new Object[] {"Walt Jr.", "Flynn"}));
 
 		BindTarget bindTarget = mock();
 

spring-r2dbc/src/test/java/org/springframework/r2dbc/core/binding/IndexedBindMarkersUnitTests.java

@@ -32,7 +32,6 @@ class IndexedBindMarkersUnitTests {
 	@Test
 	void shouldCreateNewBindMarkers() {
 		BindMarkersFactory factory = BindMarkersFactory.indexed("$", 0);
-
 		BindMarkers bindMarkers1 = factory.create();
 		BindMarkers bindMarkers2 = factory.create();
 
@@ -43,7 +42,6 @@ class IndexedBindMarkersUnitTests {
 	@Test
 	void shouldCreateNewBindMarkersWithOffset() {
 		BindTarget bindTarget = mock();
-
 		BindMarkers bindMarkers = BindMarkersFactory.indexed("$", 1).create();
 
 		BindMarker first = bindMarkers.next();
@@ -60,10 +58,9 @@ class IndexedBindMarkersUnitTests {
 
 	@Test
 	void nextShouldIncrementBindMarker() {
-		String[] prefixes = { "$", "?" };
+		String[] prefixes = {"$", "?"};
 
 		for (String prefix : prefixes) {
-
 			BindMarkers bindMarkers = BindMarkersFactory.indexed(prefix, 0).create();
 
 			BindMarker marker1 = bindMarkers.next();
@@ -76,9 +73,7 @@ class IndexedBindMarkersUnitTests {
 
 	@Test
 	void bindValueShouldBindByIndex() {
-
 		BindTarget bindTarget = mock();
-
 		BindMarkers bindMarkers = BindMarkersFactory.indexed("$", 0).create();
 
 		bindMarkers.next().bind(bindTarget, "foo");
@@ -91,7 +86,6 @@ class IndexedBindMarkersUnitTests {
 	@Test
 	void bindNullShouldBindByIndex() {
 		BindTarget bindTarget = mock();
-
 		BindMarkers bindMarkers = BindMarkersFactory.indexed("$", 0).create();
 
 		bindMarkers.next(); // ignore

spring-r2dbc/src/test/java/org/springframework/r2dbc/core/binding/NamedBindMarkersUnitTests.java

@@ -43,7 +43,7 @@ class NamedBindMarkersUnitTests {
 	}
 
 	@ParameterizedTest
-	@ValueSource(strings = { "$", "?" })
+	@ValueSource(strings = {"$", "?"})
 	void nextShouldIncrementBindMarker(String prefix) {
 		BindMarkers bindMarkers = BindMarkersFactory.named(prefix, "p", 32).create();