Migrate to JSpecify annotations for nullability constraints.

Closes #1549

Author: mp911de

spring-data-cassandra/pom.xml

@@ -227,6 +227,11 @@
 			<artifactId>kotlinx-coroutines-reactor</artifactId>
 			<optional>true</optional>
 		</dependency>
+		<dependency>
+			<groupId>org.jspecify</groupId>
+			<artifactId>jspecify</artifactId>
+			<version>1.0.0</version>
+		</dependency>
 
 		<dependency>
 			<groupId>io.mockk</groupId>

spring-data-cassandra/src/main/java/org/springframework/data/cassandra/CassandraAuthenticationException.java

@@ -28,7 +28,7 @@
  */
 public class CassandraAuthenticationException extends PermissionDeniedDataAccessException {
 
-	@Serial private static final long serialVersionUID = 8556304586797273927L;
+	private static final @Serial long serialVersionUID = 8556304586797273927L;
 
 	private final EndPoint host;
 

spring-data-cassandra/src/main/java/org/springframework/data/cassandra/CassandraConnectionFailureException.java

@@ -31,7 +31,7 @@
  */
 public class CassandraConnectionFailureException extends DataAccessResourceFailureException {
 
-	@Serial private static final long serialVersionUID = 6299912054261646552L;
+	private static final @Serial long serialVersionUID = 6299912054261646552L;
 
 	private final Map<Node, Throwable> messagesByHost;
 

spring-data-cassandra/src/main/java/org/springframework/data/cassandra/CassandraInsufficientReplicasAvailableException.java

@@ -26,7 +26,7 @@
  */
 public class CassandraInsufficientReplicasAvailableException extends TransientDataAccessException {
 
-	@Serial private static final long serialVersionUID = 6415130674604814905L;
+	private static final @Serial long serialVersionUID = 6415130674604814905L;
 
 	private int numberRequired;
 	private int numberAlive;

spring-data-cassandra/src/main/java/org/springframework/data/cassandra/CassandraInternalException.java

@@ -26,7 +26,7 @@
  */
 public class CassandraInternalException extends DataAccessException {
 
-	@Serial private static final long serialVersionUID = 433061676465346338L;
+	private static final @Serial long serialVersionUID = 433061676465346338L;
 
 	/**
 	 * Constructor for {@link CassandraInternalException}.

spring-data-cassandra/src/main/java/org/springframework/data/cassandra/CassandraInvalidConfigurationInQueryException.java

@@ -27,7 +27,7 @@
  */
 public class CassandraInvalidConfigurationInQueryException extends InvalidDataAccessApiUsageException {
 
-	@Serial private static final long serialVersionUID = 4594321191806182918L;
+	private static final @Serial long serialVersionUID = 4594321191806182918L;
 
 	/**
 	 * Constructor for {@link CassandraInvalidConfigurationInQueryException}.

spring-data-cassandra/src/main/java/org/springframework/data/cassandra/CassandraInvalidQueryException.java

@@ -26,7 +26,7 @@
  */
 public class CassandraInvalidQueryException extends InvalidDataAccessApiUsageException {
 
-	@Serial private static final long serialVersionUID = 4594321191806182918L;
+	private static final @Serial long serialVersionUID = 4594321191806182918L;
 
 	/**
 	 * Constructor for {@link CassandraInvalidQueryException}.

spring-data-cassandra/src/main/java/org/springframework/data/cassandra/CassandraKeyspaceExistsException.java

@@ -24,7 +24,7 @@
  */
 public class CassandraKeyspaceExistsException extends CassandraSchemaElementExistsException {
 
-	@Serial private static final long serialVersionUID = 6032967419751410352L;
+	private static final @Serial long serialVersionUID = 6032967419751410352L;
 
 	/**
 	 * Constructor for {@link CassandraKeyspaceExistsException}.
@@ -37,6 +37,7 @@ public CassandraKeyspaceExistsException(String keyspaceName, String msg, Throwab
 		super(keyspaceName, ElementType.KEYSPACE, msg, cause);
 	}
 
+	@SuppressWarnings("NullAway")
 	public String getKeyspaceName() {
 		return getElementName();
 	}

spring-data-cassandra/src/main/java/org/springframework/data/cassandra/CassandraManagedTypes.java

@@ -80,4 +80,5 @@ public static CassandraManagedTypes empty() {
 	public void forEach(Consumer<Class<?>> action) {
 		delegate.forEach(action);
 	}
+
 }

spring-data-cassandra/src/main/java/org/springframework/data/cassandra/CassandraQuerySyntaxException.java

@@ -26,7 +26,7 @@
  */
 public class CassandraQuerySyntaxException extends InvalidDataAccessApiUsageException {
 
-	@Serial private static final long serialVersionUID = 4398474399882434154L;
+	private static final @Serial long serialVersionUID = 4398474399882434154L;
 
 	/**
 	 * Constructor for {@link CassandraQuerySyntaxException}.