必须为此操作提供 PartitionKey 值

Question

我正在尝试从 Azure Cosmos Db 集合中检索文档。我运行出错了

Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is java.lang.UnsupportedOperationException: PartitionKey value must be supplied for this operation.] with root cause
java.lang.UnsupportedOperationException: PartitionKey value must be supplied for this operation.

我试图在线查找如何为函数 findById() 提供分区键值，但似乎 "Azure Spring data cosmosdb" 没有提供分区键的选项java 实现的函数

orderTransactionRepository.findById("id").get

Answer 1

搜索了 test code of findById method for partitioned collection which is mentioned in the home page of spring-data-cosmos。

@Test
    public void testFindByIdForPartitionedCollection() {
        final List<Address> addresses = repository.findByPostalCode(TestConstants.POSTAL_CODE);

        assertThat(addresses.size()).isEqualTo(2);
        assertThat(addresses.get(0).getPostalCode().equals(TestConstants.POSTAL_CODE));
        assertThat(addresses.get(1).getPostalCode().equals(TestConstants.POSTAL_CODE));
    }

您可以找到语句 here:

对于Partitioned collection，如果要通过findById(id)查询记录，会抛出异常。

// Incorrect for partitioned collection, exception will be thrown
   Address result = repository.findById(id);  // Caution: Works for non-partitioned collection

相反，您可以使用自定义查询按 ID 字段名称查询记录。

// Correct, postalCode is the ID field in Address domain
   @Repository
   public interface AddressRepository extends DocumentDbRepository<Address, String> {
      List<Address> findByPostalCode(String postalCode);
   }

   // Query
   List<Address> result = repository.findByPostalCode(postalCode);

另一种方式我发现你仍然可以使用spring-data-cosmos包中的Document DB normal sdk，你只需要简单地封装该方法即可。请参考这个sample code.

只是为了总结，这基本上是由于 Spring 数据共享更改了 querylookupstrategy 正在实施的接口名称。你需要回到之前的版本cosmos-db i.e. 2.0.5！这是 link 说明问题 github.com/Microsoft/spring-data-cosmosdb/issues/304

必须为此操作提供 PartitionKey 值

PartitionKey value must be supplied for this operation

java

azure-cosmosdb

azure-cosmosdb-sqlapi