Re: Request for additional SPI functions.

This seems like a reasonable request. Care to submit a patch?

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Thomas Hallgren wrote:
> Short story:
> I need two new functions in the Server Programming Interface (SPI) when
> mapping an ExecutionPlan to a Java prepared statement (pljava project).
>
> Long story:
> My problem is that once a plan is prepared and I want to execute it, I send
> an array of java objects for the arguments. The SPI_cursor_open/SPI_execp of
> course expects the arguments to be Datum's and the mapper must convert java
> objects. Knowing the Oid of each type, this is not a problem. Those are
> hidden in the opaque execution plan (a void*). I'm all in favor of data
> hiding and reluctant to use spi_priv.h so I propose that you add the
> following two functions:
>
> /*
> * Returns the number of arguments for the prepared plan.
> */
> int SPI_getargcount(void* plan)
> {
> if (plan == NULL)
> {
> SPI_result = SPI_ERROR_ARGUMENT;
> return -1;
> }
> return ((_SPI_plan*)plan)->nargs;
> }
>
> /*
> * Returns the Oid representing the type id for argument at argIndex. First
> * parameter is at index zero.
> */
> Oid SPI_getargtypeid(void* plan, int argIndex)
> {
> if (plan == NULL || argIndex < 0 || argIndex >=
> ((_SPI_plan*)plan)->nargs)
> {
> SPI_result = SPI_ERROR_ARGUMENT;
> return InvalidOid;
> }
> return ((_SPI_plan*)plan)->argtypes[argIndex];
> }
>
> Regards,
>
> Thomas Hallgren
>
>
>
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