J2EE.11.3 J2EE SPI

Many of the APIs that make up the J2EE platform include an SPI layer that allows service providers or other system level components to be plugged in. This specification does not describe the execution environment for such service providers, nor the packaging and deployment requirements for service providers. Future versions of this specification will fully define the J2EE SPI. The J2EE SPI will include the JDBC 2.0 extension APIs for connection pooling and distributed transactions.