使用spring数据cassandra的spring引导应用程序中的TTL支持

Question

在插入和更新数据时，我正在尝试向每列添加TTL，同时使用spring boot应用程序。为此，我使用弹簧数据cassandra 1.1.3.RELEASE

为此，我编写了一个界面CustomTTL存储库：

@NoRepositoryBean
public interface CustomTTLRepository<T, ID extends Serializable> extends TypedIdCassandraRepository<T, ID> {
    <S extends T> S save(S s, int ttl);
}

实施自定义TTLRepositoryImpl:

@NoRepositoryBean
public class CustomTTLRepositoryImpl<T, ID extends Serializable> extends SimpleCassandraRepository<T, ID> implements CustomTTLRepository<T, ID> {
    public CustomTTLRepositoryImpl(CassandraEntityInformation<T, ID> metadata, CassandraTemplate template) {
         super(metadata, template);
         this.entityInformation = metadata;
         this.template = template;
    }   
    @Override
    public <S extends T> S save(S s, int ttl) {
        WriteOptions writeOptions=new WriteOptions();
        writeOptions.setTtl(ttl);
        return template.insert(s, writeOptions);
    }

}

但当我试图部署这个应用程序时，我得到了以下错误：

Caused by: java.lang.IllegalArgumentException: encountered unsupported query parameter type [class java.lang.Object] in method public abstract java.lang.Object com.cisco.operation.CustomTTLRepository.save(java.lang.Object,int)
    at org.springframework.data.cassandra.repository.query.CassandraQueryMethod.verify(CassandraQueryMethod.java:104)
    at org.springframework.data.cassandra.repository.query.CassandraQueryMethod.<init>(CassandraQueryMethod.java:68)
    at org.springframework.data.cassandra.repository.support.CassandraRepositoryFactory$CassandraQueryLookupStrategy.resolveQuery(CassandraRepositoryFactory.java:106)
    at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.<init>(RepositoryFactorySupport.java:369)
    at org.springframework.data.repository.core.support.RepositoryFactorySupport.getRepository(RepositoryFactorySupport.java:192)
    at org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.initAndReturn(RepositoryFactoryBeanSupport.java:239)
    at org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.afterPropertiesSet(RepositoryFactoryBeanSupport.java:225)

Answer 1

提交任何帖子都可能是一个旧线程。但它帮助我完成了手头的任务。以下是对我有效的解决方案

1. 自定义基本存储库
2. 自定义单个存储库

自定义基本存储库的更改

1.1.扩展CassandraRepository以添加接受TTL 的保存方法

@NoRepositoryBean
public interface ExtendedCassandraRepository<T, ID> extends CassandraRepository<T, ID> {
    <S extends T> S save(S entity, int ttl);
}

1.2.提供新保存方法的实施

public class ExtendedCassandraRepositoryImpl<T, ID> extends SimpleCassandraRepository<T, ID> implements ExtendedCassandraRepository<T, ID> {
private final CassandraEntityInformation<T, ID> entityInformation;
private final CassandraOperations operations;
public ExtendedCassandraRepositoryImpl(CassandraEntityInformation metadata, CassandraOperations operations) {
    super(metadata, operations);
    this.entityInformation = metadata;
    this.operations = operations;
}
@Override
public <S extends T> S save(S entity, int ttl) {
    InsertOptions insertOptions = org.springframework.data.cassandra.core.InsertOptions.builder().ttl(ttl).build();
    operations.insert(entity, insertOptions);
    return entity;
}
}

1.3.为我的域实体创建存储库

@Repository
public interface MyDomainEntityRepository extends ExtendedCassandraRepository<MyDomainEntity,String> {
}

1.4.更新repositoryBaseClass

@EnableCassandraRepositories(basePackages = "my.repository", repositoryBaseClass = ExtendedCassandraRepositoryImpl.class)

自定义单个存储库的更改

2.1用新的保存方法定义片段接口

public interface CustomizedSave<T> {
    <S extends T> S save(S entity, int ttl);
}

2.2.提供实施

public class CustomizedSaveImpl<T> implements CustomizedSave<T> {
@Autowired
private CassandraOperations operations;
@Override
public <S extends T> S save(S entity, int ttl) {
    InsertOptions insertOptions = org.springframework.data.cassandra.core.InsertOptions.builder().ttl(ttl).build();
    operations.insert(entity, insertOptions);
    return entity;
}
}

2.3.在存储库中扩展此方法

@Repository
public interface MyDomainEntityRepository extends CassandraRepository<MyDomainEntity,String>, CustomizedSave<MyDomainEntity> {
}

参考文件https://docs.spring.io/spring-data/jpa/docs/current/reference/html/#repositories.custom-实现

Answer 2

尽管答案可能为时已晚，但我已经尝试了CassandraOperations，它运行良好，请查看下面的存储库实现

 @Repository
 public class DomainRepository {
 @Autowired
 CassandraOperations cassandraOperations;
 @Autowired
 WriteOptions writeOptions;
 @Override
 public void save(DomainObject domainObject) {
    writeOptions.setTtl(100);
    cassandraOperations.insert(domainObject,writeOptions);
 }
}

感谢