Clarify DataAccessException/ScriptException declarations for R2DBC

Closes gh-30932

(cherry picked from commit 5bcf5c6)

spring-r2dbc/src/main/java/org/springframework/r2dbc/connection/init/DatabasePopulator.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.
@@ -20,7 +20,6 @@
 import io.r2dbc.spi.ConnectionFactory;
 import reactor.core.publisher.Mono;
 
-import org.springframework.dao.DataAccessException;
 import org.springframework.r2dbc.connection.ConnectionFactoryUtils;
 import org.springframework.util.Assert;
 
@@ -44,17 +43,18 @@ public interface DatabasePopulator {
 	 * already configured and ready to use, must not be {@code null}
 	 * @return {@link Mono} that initiates script execution and is
 	 * notified upon completion
-	 * @throws ScriptException in all other error cases
+	 * @throws ScriptException in case of any errors
 	 */
-	Mono<Void> populate(Connection connection) throws ScriptException;
+	Mono<Void> populate(Connection connection);
 
 	/**
 	 * Execute the given {@link DatabasePopulator} against the given {@link ConnectionFactory}.
 	 * @param connectionFactory the {@link ConnectionFactory} to execute against
 	 * @return {@link Mono} that initiates {@link DatabasePopulator#populate(Connection)}
 	 * and is notified upon completion
+	 * @throws ScriptException in case of any errors
 	 */
-	default Mono<Void> populate(ConnectionFactory connectionFactory) throws DataAccessException {
+	default Mono<Void> populate(ConnectionFactory connectionFactory) {
 		Assert.notNull(connectionFactory, "ConnectionFactory must not be null");
 		return Mono.usingWhen(ConnectionFactoryUtils.getConnection(connectionFactory), //
 				this::populate, //

spring-r2dbc/src/main/java/org/springframework/r2dbc/connection/init/ResourceDatabasePopulator.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.
@@ -260,7 +260,7 @@ public void setDataBufferFactory(DataBufferFactory dataBufferFactory) {
 
 
 	@Override
-	public Mono<Void> populate(Connection connection) throws ScriptException {
+	public Mono<Void> populate(Connection connection) {
 		Assert.notNull(connection, "Connection must not be null");
 		return Flux.fromIterable(this.scripts).concatMap(resource -> {
 			EncodedResource encodedScript = new EncodedResource(resource, this.sqlScriptEncoding);

spring-r2dbc/src/main/java/org/springframework/r2dbc/connection/init/ScriptUtils.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.
@@ -125,7 +125,7 @@ public abstract class ScriptUtils {
 	 * @see org.springframework.r2dbc.connection.ConnectionFactoryUtils#getConnection
 	 * @see org.springframework.r2dbc.connection.ConnectionFactoryUtils#releaseConnection
 	 */
-	public static Mono<Void> executeSqlScript(Connection connection, Resource resource) throws ScriptException {
+	public static Mono<Void> executeSqlScript(Connection connection, Resource resource) {
 		return executeSqlScript(connection, new EncodedResource(resource));
 	}
 
@@ -149,7 +149,7 @@ public static Mono<Void> executeSqlScript(Connection connection, Resource resour
 	 * @see org.springframework.r2dbc.connection.ConnectionFactoryUtils#getConnection
 	 * @see org.springframework.r2dbc.connection.ConnectionFactoryUtils#releaseConnection
 	 */
-	public static Mono<Void> executeSqlScript(Connection connection, EncodedResource resource) throws ScriptException {
+	public static Mono<Void> executeSqlScript(Connection connection, EncodedResource resource) {
 		return executeSqlScript(connection, resource, DefaultDataBufferFactory.sharedInstance, false, false,
 				DEFAULT_COMMENT_PREFIXES, DEFAULT_STATEMENT_SEPARATOR, DEFAULT_BLOCK_COMMENT_START_DELIMITER,
 				DEFAULT_BLOCK_COMMENT_END_DELIMITER);
@@ -189,7 +189,7 @@ public static Mono<Void> executeSqlScript(Connection connection, EncodedResource
 	public static Mono<Void> executeSqlScript(Connection connection, EncodedResource resource,
 			DataBufferFactory dataBufferFactory, boolean continueOnError, boolean ignoreFailedDrops,
 			String commentPrefix, @Nullable String separator, String blockCommentStartDelimiter,
-			String blockCommentEndDelimiter) throws ScriptException {
+			String blockCommentEndDelimiter) {
 
 		return executeSqlScript(connection, resource, dataBufferFactory, continueOnError,
 				ignoreFailedDrops, new String[] { commentPrefix }, separator,
@@ -230,7 +230,7 @@ public static Mono<Void> executeSqlScript(Connection connection, EncodedResource
 	public static Mono<Void> executeSqlScript(Connection connection, EncodedResource resource,
 			DataBufferFactory dataBufferFactory, boolean continueOnError, boolean ignoreFailedDrops,
 			String[] commentPrefixes, @Nullable String separator, String blockCommentStartDelimiter,
-			String blockCommentEndDelimiter) throws ScriptException {
+			String blockCommentEndDelimiter) {
 
 		if (logger.isDebugEnabled()) {
 			logger.debug("Executing SQL script from " + resource);
@@ -365,7 +365,7 @@ private static void appendSeparatorToScriptIfNecessary(StringBuilder scriptBuild
 	 */
 	static boolean containsStatementSeparator(EncodedResource resource, String script,
 			String separator, String[] commentPrefixes, String blockCommentStartDelimiter,
-			String blockCommentEndDelimiter) throws ScriptException {
+			String blockCommentEndDelimiter) {
 
 		boolean inSingleQuote = false;
 		boolean inDoubleQuote = false;
@@ -448,7 +448,7 @@ else if (script.startsWith(blockCommentStartDelimiter, i)) {
 	 */
 	static List<String> splitSqlScript(EncodedResource resource, String script,
 			String separator, String[] commentPrefixes, String blockCommentStartDelimiter,
-			String blockCommentEndDelimiter) throws ScriptException {
+			String blockCommentEndDelimiter) {
 
 		Assert.hasText(script, "'script' must not be null or empty");
 		Assert.notNull(separator, "'separator' must not be null");

spring-r2dbc/src/main/java/org/springframework/r2dbc/core/ConnectionAccessor.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.
@@ -22,22 +22,23 @@
 import reactor.core.publisher.Flux;
 import reactor.core.publisher.Mono;
 
-import org.springframework.dao.DataAccessException;
-
 /**
  * Interface declaring methods that accept callback {@link Function}
  * to operate within the scope of a {@link Connection}.
  * Callback functions operate on a provided connection and must not
  * close the connection as the connections may be pooled or be
  * subject to other kinds of resource management.
  *
- * <p> Callback functions are responsible for creating a
+ * <p>Callback functions are responsible for creating a
  * {@link org.reactivestreams.Publisher} that defines the scope of how
  * long the allocated {@link Connection} is valid. Connections are
  * released after the publisher terminates.
  *
+ * <p>This serves as a base interface for {@link DatabaseClient}.
+ *
  * @author Mark Paluch
  * @since 5.3
+ * @see DatabaseClient
  */
 public interface ConnectionAccessor {
 
@@ -49,8 +50,9 @@ public interface ConnectionAccessor {
 	 * {@link Function} closure, otherwise resources may get defunct.
 	 * @param action the callback object that specifies the connection action
 	 * @return the resulting {@link Mono}
+	 * @throws org.springframework.dao.DataAccessException in case of any errors
 	 */
-	<T> Mono<T> inConnection(Function<Connection, Mono<T>> action) throws DataAccessException;
+	<T> Mono<T> inConnection(Function<Connection, Mono<T>> action);
 
 	/**
 	 * Execute a callback {@link Function} within a {@link Connection} scope.
@@ -60,7 +62,8 @@ public interface ConnectionAccessor {
 	 * {@link Function} closure, otherwise resources may get defunct.
 	 * @param action the callback object that specifies the connection action
 	 * @return the resulting {@link Flux}
+	 * @throws org.springframework.dao.DataAccessException in case of any errors
 	 */
-	<T> Flux<T> inConnectionMany(Function<Connection, Flux<T>> action) throws DataAccessException;
+	<T> Flux<T> inConnectionMany(Function<Connection, Flux<T>> action);
 
 }

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

@@ -32,9 +32,9 @@
 import org.springframework.util.Assert;
 
 /**
- * A non-blocking, reactive client for performing database calls requests with
- * Reactive Streams back pressure. Provides a higher level, common API over
- * R2DBC client libraries.
+ * A non-blocking, reactive client for performing database calls with Reactive Streams
+ * back pressure. Provides a higher level, common API over R2DBC client libraries.
+ * Propagates {@link org.springframework.dao.DataAccessException} variants for errors.
  *
  * <p>Use one of the static factory methods {@link #create(ConnectionFactory)}
  * or obtain a {@link DatabaseClient#builder()} to create an instance.

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

@@ -44,7 +44,6 @@
 import reactor.core.publisher.Flux;
 import reactor.core.publisher.Mono;
 
-import org.springframework.dao.DataAccessException;
 import org.springframework.dao.InvalidDataAccessApiUsageException;
 import org.springframework.lang.Nullable;
 import org.springframework.r2dbc.connection.ConnectionFactoryUtils;
@@ -105,7 +104,7 @@ public GenericExecuteSpec sql(Supplier<String> sqlSupplier) {
 	}
 
 	@Override
-	public <T> Mono<T> inConnection(Function<Connection, Mono<T>> action) throws DataAccessException {
+	public <T> Mono<T> inConnection(Function<Connection, Mono<T>> action) {
 		Assert.notNull(action, "Callback object must not be null");
 		Mono<ConnectionCloseHolder> connectionMono = getConnection().map(
 				connection -> new ConnectionCloseHolder(connection, this::closeConnection));
@@ -127,7 +126,7 @@ public <T> Mono<T> inConnection(Function<Connection, Mono<T>> action) throws Dat
 	}
 
 	@Override
-	public <T> Flux<T> inConnectionMany(Function<Connection, Flux<T>> action) throws DataAccessException {
+	public <T> Flux<T> inConnectionMany(Function<Connection, Flux<T>> action) {
 		Assert.notNull(action, "Callback object must not be null");
 		Mono<ConnectionCloseHolder> connectionMono = getConnection().map(
 				connection -> new ConnectionCloseHolder(connection, this::closeConnection));