[GENERAL] Java application and SPI...(?)

[Katsaros Kwn/nos]

Hi everybody,   Is there any way to connect a Java application to user defined functions (which use SPI)? I have an already implemented Java app that I want to use in order to pass arguments to my functions and receive results (e.g. tuples). I'm thinking of JNI and/or JDBC but I haven't reached a conclusion yet on whether it can help me do the job.   I'm a little confused. Any suggestions?   Regards, Ntinos Kataros