Initial upgrade to R2DBC Borca

See gh-27976

build.gradle

@@ -30,7 +30,7 @@ configure(allprojects) { project ->
 			mavenBom "com.fasterxml.jackson:jackson-bom:2.13.1"
 			mavenBom "io.netty:netty-bom:4.1.73.Final"
 			mavenBom "io.projectreactor:reactor-bom:2020.0.15"
-			mavenBom "io.r2dbc:r2dbc-bom:Arabba-SR12"
+			mavenBom "io.r2dbc:r2dbc-bom:Borca-RELEASE"
 			mavenBom "io.rsocket:rsocket-bom:1.1.1"
 			mavenBom "org.eclipse.jetty:jetty-bom:11.0.7"
 			mavenBom "org.jetbrains.kotlin:kotlin-bom:1.6.10"

spring-r2dbc/spring-r2dbc.gradle

@@ -17,10 +17,7 @@ dependencies {
 	testImplementation(testFixtures(project(":spring-context")))
 	testImplementation("io.projectreactor:reactor-test")
 	testImplementation("io.r2dbc:r2dbc-h2")
-	testImplementation("com.h2database:h2:1.4.200") {
-		because("r2dbc-h2 does not yet support H2 2.0")
-	}
-	testImplementation("io.r2dbc:r2dbc-spi-test:0.8.1.RELEASE") {
+	testImplementation("io.r2dbc:r2dbc-spi-test:0.9.1.RELEASE") {
 		exclude group: "org.springframework", module: "spring-jdbc"
 	}
 }

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

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2020 the original author or authors.
+ * Copyright 2002-2022 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.
@@ -52,6 +52,7 @@ public class ColumnMapRowMapper implements BiFunction<Row, RowMetadata, Map<Stri
 	public final static ColumnMapRowMapper INSTANCE = new ColumnMapRowMapper();
 
 
+	@SuppressWarnings("deprecation")  // getColumnNames() is deprecated as of R2DBC 0.9
 	@Override
 	public Map<String, Object> apply(Row row, RowMetadata rowMetadata) {
 		Collection<String> columns = rowMetadata.getColumnNames();

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

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2020 the original author or authors.
+ * Copyright 2002-2022 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.
@@ -247,7 +247,7 @@ class DefaultDatabaseClientUnitTests {
 	@Test
 	void selectShouldEmitFirstValue() {
 		MockRowMetadata metadata = MockRowMetadata.builder().columnMetadata(
-				MockColumnMetadata.builder().name("name").build()).build();
+				MockColumnMetadata.builder().name("name").javaType(String.class).build()).build();
 
 		MockResult.Builder resultBuilder = MockResult.builder().rowMetadata(metadata);
 		MockResult result = resultBuilder.row(MockRow.builder().identified(0, Object.class, "Walter").build())
@@ -267,7 +267,7 @@ class DefaultDatabaseClientUnitTests {
 	@Test
 	void selectShouldEmitAllValues() {
 		MockRowMetadata metadata = MockRowMetadata.builder().columnMetadata(
-				MockColumnMetadata.builder().name("name").build()).build();
+				MockColumnMetadata.builder().name("name").javaType(String.class).build()).build();
 
 		MockResult.Builder resultBuilder = MockResult.builder().rowMetadata(metadata);
 		MockResult result = resultBuilder.row(MockRow.builder().identified(0, Object.class, "Walter").build())
@@ -289,7 +289,7 @@ class DefaultDatabaseClientUnitTests {
 	void selectOneShouldFailWithException() {
 
 		MockRowMetadata metadata = MockRowMetadata.builder().columnMetadata(
-				MockColumnMetadata.builder().name("name").build()).build();
+				MockColumnMetadata.builder().name("name").javaType(String.class).build()).build();
 
 		MockResult.Builder resultBuilder = MockResult.builder().rowMetadata(metadata);
 		MockResult result = resultBuilder.row(MockRow.builder().identified(0, Object.class, "Walter").build())
@@ -356,7 +356,7 @@ class DefaultDatabaseClientUnitTests {
 	void shouldApplyStatementFilterFunctions() {
 
 		MockRowMetadata metadata = MockRowMetadata.builder().columnMetadata(
-				MockColumnMetadata.builder().name("name").build()).build();
+				MockColumnMetadata.builder().name("name").javaType(String.class).build()).build();
 		MockResult result = MockResult.builder().rowMetadata(metadata).build();
 
 		Statement statement = mockStatement(result);
@@ -434,7 +434,7 @@ class DefaultDatabaseClientUnitTests {
 	private MockResult mockSingleColumnResult(@Nullable MockRow.Builder row) {
 
 		MockRowMetadata metadata = MockRowMetadata.builder().columnMetadata(
-				MockColumnMetadata.builder().name("name").build()).build();
+				MockColumnMetadata.builder().name("name").javaType(String.class).build()).build();
 
 		MockResult.Builder resultBuilder = MockResult.builder().rowMetadata(metadata);
 		if (row != null) {