英文:
Updating multiple documents using Java couchbase SDK
问题
我在我的应用程序中使用Java Couchbase SDK。我想要为多个文档的相同路径更新相同的值。例如，所有这些文档中都有一个键X，其值为Y。我想要将键X的值更新为Z。
我正在使用异步存储桶的query方法，我使用的查询如下所示-
UPDATE default USE KEYS ["a","b","c"] SET X=Z
"default"是存储桶名称。
a、b、c是我想要更新的文档键。
我的问题是，SDK是否保证要么更新所有这些键，要么不更新任何键。我如何知道所有文档是否被正确更新？
英文:
I am using java Couchbase sdk in my application. I want to update same path with same values for multiple documents. For example there is a key X with value Y in all these documents. I want to update the Key X to have the value Z.
I am using the Async bucket's query method and the query that I am using looks like this-
UPDATE default USE KEYS ["a","b","c"] SET X=Z
default is the bucket name
a,b,c are the document keys that I want to update.
My question here is does the sdk guarantees that either all of these keys will be updated or none of them. How do I know if all the documents were updated correctly?
答案1
得分: 2
N1QL不支持事务（原子性是在文档级别上，而不是语句/多语句级别）。您应该查看JAVA SDK事务，链接：https://docs.couchbase.com/java-sdk/current/howtos/distributed-acid-transactions-from-the-sdk.html
英文:
N1QL doesn't support transactions (Atomicity is at document level not statement/multi statement level).
You should check out JAVA SDK transactions https://docs.couchbase.com/java-sdk/current/howtos/distributed-acid-transactions-from-the-sdk.html
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