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baef78d96b
Patch by: wieck@sapserv.debis.de (Jan Wieck) One of the design rules of PostgreSQL is extensibility. And to follow this rule means (at least for me) that there should not only be a builtin PL. Instead I would prefer a defined interface for PL implemetations.
57 lines
1.7 KiB
C
57 lines
1.7 KiB
C
/*-------------------------------------------------------------------------
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*
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* fcache.h--
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*
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*
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*
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* Copyright (c) 1994, Regents of the University of California
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*
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* $Id: fcache.h,v 1.6 1998/01/15 19:46:36 pgsql Exp $
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef FCACHE_H
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#define FCACHE_H
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#include <fmgr.h>
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typedef struct
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{
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int typlen; /* length of the return type */
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int typbyval; /* true if return type is pass by value */
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FmgrInfo func; /* address of function to call (for c
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* funcs) */
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Oid foid; /* oid of the function in pg_proc */
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Oid language; /* oid of the language in pg_language */
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int nargs; /* number of arguments */
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/* Might want to make these two arrays of size MAXFUNCARGS */
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Oid *argOidVect; /* oids of all the arguments */
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bool *nullVect; /* keep track of null arguments */
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char *src; /* source code of the function */
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char *bin; /* binary object code ?? */
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char *func_state; /* fuction_state struct for execution */
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bool oneResult; /* true we only want 1 result from the
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* function */
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bool hasSetArg; /* true if func is part of a nested dot
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* expr whose argument is func returning a
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* set ugh! */
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Pointer funcSlot; /* if one result we need to copy it before
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* we end execution of the function and
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* free stuff */
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char *setArg; /* current argument for nested dot
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* execution Nested dot expressions mean
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* we have funcs whose argument is a set
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* of tuples */
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bool istrusted; /* trusted fn? */
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} FunctionCache,
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*FunctionCachePtr;
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#endif /* FCACHE_H */
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