#436 PostgreSQLOidDataType should unwrap PGConnection instead of casting to it.

[Scott Franson]

PostgreSQLOidDataType casts statement.getConnection() to an instance of PGConnection. It should use statement.getConnection().unwrap(PGConnection.class) instead. The cast will fail if there are intermediate connection wrappers involved (such as DBCP2).
From:

LargeObjectManager lobj = ((org.postgresql.PGConnection)
    statement.getConnection()).getLargeObjectAPI();

To:

LargeObjectManager lobj = statement.getConnection().unwrap(org.postgresql.PGConnection.class)
                                               .getLargeObjectAPI();

[Alexei Bratuhin]

See https://github.com/database-rider/database-rider/issues/253, the issue has been resolved by unwrapping the connection in rider-cdi

[Jeff Jensen]

Thank you for the report and fix.
If you have a test for this, would greatly appreciate your contribution on that too.

[Krzysztof Molski]

Looks like this issue is still present in PostgreSQLOidDataType#setSqlValue(): https://sourceforge.net/p/dbunit/code.git/ci/master/tree/src/main/java/org/dbunit/ext/postgresql/PostgreSQLOidDataType.java#l93