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Add an additional hook for EXPLAIN option validation.

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Commit c65bc2e1d14a2d4daed7c1921ac518f2c5ac3d17 made it possible for
loadable modules to add EXPLAIN options. Normally, any necessary
validation can be performed by the hook function passed to
RegisterExtensionExplainOption, but if a loadable module wants to sanity
check options against each other, that needs to be done after the entire
options list has been processed. So, add an additional hook for that
purpose.

Author: Sami Imseih <samimseih@gmail.com>
Reviewed-by: Robert Haas <robertmhaas@gmail.com>
Reviewed-by: Andrei Lepikhov <lepihov@gmail.com>
Reviewed-by: Tom Lane <tgl@sss.pgh.pa.us>
Discussion: http://postgr.es/m/CAA5RZ0vOcJF91O2e5AQN+V6guMNLMhJx83dxALf-iUZ-hLGO_Q@mail.gmail.com
This commit is contained in:
Robert Haas 2025-03-20 13:47:55 -04:00
parent af0d4901c1
commit 50ba65e733
2 changed files with 12 additions and 0 deletions
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7
src/backend/commands/explain_state.c
View File

@ -37,6 +37,9 @@
#include "commands/explain.h"
#include "commands/explain_state.h"
/* Hook to perform additional EXPLAIN options validation */
explain_validate_options_hook_type explain_validate_options_hook = NULL;
typedef struct
{
const char *option_name;
@ -196,6 +199,10 @@ ParseExplainOptionList(ExplainState *es, List *options, ParseState *pstate)
/* if the summary was not set explicitly, set default value */
es->summary = (summary_set) ? es->summary : es->analyze;
/* plugin specific option validation */
if (explain_validate_options_hook)
(*explain_validate_options_hook) (es, options, pstate);
}
/*

5
src/include/commands/explain_state.h
View File

@ -78,6 +78,11 @@ typedef struct ExplainState
typedef void (*ExplainOptionHandler) (ExplainState *, DefElem *, ParseState *);
/* Hook to perform additional EXPLAIN options validation */
typedef void (*explain_validate_options_hook_type) (struct ExplainState *es, List *options,
ParseState *pstate);
extern PGDLLIMPORT explain_validate_options_hook_type explain_validate_options_hook;
extern ExplainState *NewExplainState(void);
extern void ParseExplainOptionList(ExplainState *es, List *options,
ParseState *pstate);