CODEWITHSUNDEEP
cassandradatastax-java-driver
devin
devin

Reputation: 1110

Consistency level in Datastax Object Mapping API

Maybe I overlooked it, but I can't find a way to specify consistency level in Datastax Object Mapping API for Java.

I understand that it is CQL3 based and in CQL, you can specify consistency by USING CONSISTENCY clause. But in Object Mapping API you wouldn't directly deal with the queries. So how would you specify the consistency when persisting or retrieving objects?

Upvotes: 1

Views: 908

Answers (3)

devin
devin

Reputation: 1110

Took a look at the code in GitHub. There is indeed a way to set read and write consistency levels. You can specify the consistency levels using @Table annotation.

@Table (keyspace="XXX", name="riders", readConsistency="QUORUM", writeConsistency="QUORUM")

http://www.datastax.com/drivers/java/2.1/com/datastax/driver/mapping/annotations/Table.html#readConsistency()

Upvotes: 1

Nenad Bozic
Nenad Bozic

Reputation: 3784

We also had same problem, because we used save() method of Mapper class. You can use saveQuery() method which is creating Statement out of your mapped class. Here is example:

final MappingManager mappingManager = new MappingManager(session);
Mapper<MyMappedClass> myMapper = mappingManager.mapper(MyMappedClass.class);
MyMappedClass myMappedInstance = new MyMappedClass(property1, propert2);
session.execute(myMapper.saveQuery(myMappedInstance).setConsistencyLevel(QUORUM));

Upvotes: 1

Roman Tumaykin
Roman Tumaykin

Reputation: 1931

There is a ton of documentation depending on what exactly are you doing. Please check the following pages:

Perhaps one of them will be helpful for your specific case.

Upvotes: 0

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