Cassandra Datastax Driver set paging state on Accessor

问题

I'm using Datastax's lovely java driver for cassandra. I was trying to encapsulate all of my query strings into the built in accessors for mapping, but I require the ability to set the paging state for a query.

I see that this is possible with a normal Statement (SimpleStatement), but I haven't found the corresponding functionality for an Accessor. Does it exist, or do I have skip using Accessors for this functionality?

回答1:

I agree that this would be really nice to have.

One way to work with this for now would be to have your accessor return a Statement, i.e.:

@Query("SELECT * FROM ks.tbl WHERE id = ?")
Statement getAllById(@Param("id") UUID userId);

And then from there you call setPagingState on the Statement returned and execute it.

I agree that this isn't as nice as providing the paging state as a parameter to the Accessor, so I went ahead and opened up JAVA-1103.

回答2:

You can do it with Achilles:

manager
   .select()
    .allColumns_FromBaseTable()
    .where()
    .partitionKey_Eq(...)
    ...
    .withPagingState(PagingState.fromString(...))
    .getList();

来源：https://stackoverflow.com/questions/35679055/cassandra-datastax-driver-set-paging-state-on-accessor