'Data Subscription in TDengine through Java RESTful API

I'm using a time series database called TDengine.

I want to try the data subscription according the document:

TSDBSubscribe sub = ((TSDBConnection)conn).subscribe("topic", "select * from meters", false);

Then I got an error:

java.lang.ClassCastException: com.taosdata.jdbc.rs.RestfulConnection cannot be cast to com.taosdata.jdbc.TSDBConnection

What may be the problem?

rest jdbc tdengine

Sources

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