Hey Uwe, The DBCPConnectionPool returns a java.sql.Connection. From that you’d create a Statement. So I’m a little confused when you say that you’ve got it working in Pure JDBC but not with NiFi, as the class returned IS pure JDBC. Perhaps you can share a code snippet of what you’re doing in the “Pure JDBC” route that is working versus what you’re doing in the NiFi processor that’s not working?
Thanks -Mark > On Aug 31, 2023, at 10:58 AM, u...@moosheimer.com wrote: > > Hi, > > I am currently writing a processor to write OpenAI embeddings to Postgres. > I am using DBCPConnectionPool for this. > I use Maven to integrate PGVector (https://github.com/pgvector/pgvector). > > With pure JDBC this works fine. With the database classes from NiFi I get the > error: > *Cannot infer the SQL type to use for an instance of com.pgvector.PGvector. > Use setObject() with an explicit Types value to specify the type to use.* > > I use -> setObject (5, new PGvector(embeddingArray)). > embeddingArray is defined as: float[] embeddingArray > > Of course I know why I get the error from NiFi and not from the JDBC driver, > but unfortunately this knowledge does not help me. > > Can anyone tell me what SQLType I need to specify for this? > I have searched the internet and the NiFi sources on GitHub for several hours > now and have found nothing. > > One option would be to use native JDBC and ignore the ConnectionPool. But > that would be a very bad style in my opinion. > Perhaps there is a better solution? > > Any help, especially from Matt B., is appreciated as I'm at a loss. > Thanks guys.
