How to insert Json into cassandra using API, QueryBuilder and batch

问题

I see that all examples for JSON uses the query as string like

String cqlStatement = "INSERT INTO users JSON '{\"id\":888 , \"age\":21 ,\"state\":\"TX\"}'";

but I want to use QueryBuilder, since I would like to insert in batch.

Thanks

回答1:

Use Insert.json() method

Inserts the provided object, using the INSERT INTO ... JSON syntax introduced in Cassandra 2.2.

Example :

QueryBuilder.insertInto("my_data").json("{\"id\": 1, \"value\": \"This is a test\"}");

Note : Any columns which are omitted from the JSON string will be defaulted to a NULL value (which will result in a tombstone being created).

来源：https://stackoverflow.com/questions/43236799/how-to-insert-json-into-cassandra-using-api-querybuilder-and-batch