如何在Java中使用Cassandra映射类型

<dependency>
    <groupId>com.datastax.oss</groupId>
    <artifactId>java-driver-core</artifactId>
    <version>4.13.0</version>
</dependency>

Cluster cluster = Cluster.builder()
        .addContactPoint("127.0.0.1") // Cassandra节点的IP地址
        .withPort(9042) // Cassandra节点的端口号
        .build();

Session session = cluster.connect();

MappingManager manager = new MappingManager(session);
Mapper<MyEntity> mapper = manager.mapper(MyEntity.class);

import com.datastax.oss.driver.api.mapper.annotations.CqlName;
import com.datastax.oss.driver.api.mapper.annotations.Entity;
import com.datastax.oss.driver.api.mapper.annotations.PartitionKey;
import com.datastax.oss.driver.api.mapper.annotations.Property;

@Entity
@CqlName("my_table")
public class MyEntity {
    @PartitionKey
    @Property(name = "id")
    private UUID id;

    @Property(name = "data")
    private Map<String, String> data;

    // 其他属性和方法
}

// 插入数据
MyEntity entity = new MyEntity();
entity.setId(UUID.randomUUID());
entity.setData(Map.of("key1", "value1", "key2", "value2"));
mapper.save(entity);

// 查询数据
MyEntity retrievedEntity = mapper.get(entity.getId());

// 更新数据
retrievedEntity.getData().put("key3", "value3");
mapper.save(retrievedEntity);

// 删除数据
mapper.delete(retrievedEntity.getId());