This means the JDBC driver you're using does not support the use of the two-argument setObject() call when the object is a PGVector. Did you register the Vector type by calling:
PGvector.addVectorType(conn); The documentation [1] says that the two-argument setObject() should work if you have registered the Vector type. Regards, Matt [1] https://github.com/pgvector/pgvector-java On Thu, Aug 31, 2023 at 12:01 PM Mark Payne <marka...@hotmail.com> wrote: > > 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. >
