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PL/Java contains a JDBC driver that maps to the PostgreSQL SPI functions. A connection that maps to the current transaction can be obtained using the following statement:
Connection conn = DriverManager.getConnection("jdbc:default:connection");
From there on, you can prepare and execute statements just like with any other JDBC connection. There are a couple of limitations though:
- The transaction cannot be managed in any way. Thus, you cannot use
methods on the connection such as:
- A savepoint cannot outlive the function in which it was set and it must also be rolled back or released by that same function.
ResultSets returned from
- Meta-data became available in PL/Java 1.1.
CallableStatement(for stored procedures) is not yet implemented.
- Clob/Blob types need more work. byte and String works fine for bytea/text respectively. A more efficient mapping is planned where the actual array is not copied.