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Commit23a8b77

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Here are two patches. The guc_and_tablefunc patch addresses the two
changes mentioned above, and also adds a new function to the tablefuncAPI. The tablefunc API change adds the following function:* Oid foidGetTypeId(Oid foid) - Get a function's typeid given the* function Oid. Use this together with TypeGetTupleDesc() to get a* TupleDesc which is derived from the function's declared return type.In the next post I'll send the contrib/tablefunc patch, whichillustrates the usage of this new function. Also attached is a doc patchfor this change. The doc patch also adds a function that I failed todocument previously.Joe Conway
1 parentceb438e commit23a8b77

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4 files changed

+24
-6
lines changed

4 files changed

+24
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‎doc/src/sgml/xfunc.sgml

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@@ -1,5 +1,5 @@
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<!--
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$Header: /cvsroot/pgsql/doc/src/sgml/xfunc.sgml,v 1.53 2002/07/18 04:47:17 momjian Exp $
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$Header: /cvsroot/pgsql/doc/src/sgml/xfunc.sgml,v 1.54 2002/07/30 16:20:03 momjian Exp $
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-->
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<chapter id="xfunc">
@@ -1556,6 +1556,14 @@ HeapTuple BuildTupleFromCStrings(AttInMetadata *attinmeta, char **values)
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should be set to NULL.
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</para>
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<para>
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In order to get an attribute "in" function and typelem value given the
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typeid, use
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<programlisting>
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void get_type_metadata(Oid typeid, Oid *attinfuncid, Oid *attelem)
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</programlisting>
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</para>
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<para>
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Finally, in order to return a tuple using the SRF portion of the API
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(described below), the tuple must be converted into a Datum. Use

‎src/backend/utils/misc/guc.c

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@@ -5,7 +5,7 @@
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* command, configuration file, and command line options.
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* See src/backend/utils/misc/README for more information.
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*
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* $Header: /cvsroot/pgsql/src/backend/utils/misc/guc.c,v 1.75 2002/07/20 15:12:55 tgl Exp $
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* $Header: /cvsroot/pgsql/src/backend/utils/misc/guc.c,v 1.76 2002/07/30 16:20:03 momjian Exp $
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*
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* Copyright 2000 by PostgreSQL Global Development Group
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* Written by Peter Eisentraut <peter_e@gmx.net>.
@@ -2347,13 +2347,21 @@ GetConfigOptionByName(const char *name, const char **varname)
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* form of name. Return value is palloc'd.
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*/
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char*
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GetConfigOptionByNum(intvarnum,constchar**varname)
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GetConfigOptionByNum(intvarnum,constchar**varname,bool*noshow)
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{
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structconfig_generic*conf=guc_variables[varnum];
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structconfig_generic*conf;
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/* check requested variable number valid */
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Assert((varnum >=0)&& (varnum<num_guc_variables));
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conf=guc_variables[varnum];
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if (varname)
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*varname=conf->name;
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if (noshow)
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*noshow= (conf->flags&GUC_NO_SHOW_ALL) ? true : false;
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return_ShowOption(conf);
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}
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‎src/include/funcapi.h

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Original file line numberDiff line numberDiff line change
@@ -139,6 +139,8 @@ typedef struct
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* HeapTuple BuildTupleFromCStrings(AttInMetadata *attinmeta, char **values) -
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*build a HeapTuple given user data in C string form. values is an array
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*of C strings, one for each attribute of the return tuple.
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* void get_type_metadata(Oid typeid, Oid *attinfuncid, Oid *attelem) - Get
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* an attribute "in" function and typelem value given the typeid.
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*
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* Macro declarations:
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* TupleGetDatum(TupleTableSlot *slot, HeapTuple tuple) - get a Datum

‎src/include/utils/guc.h

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Original file line numberDiff line numberDiff line change
@@ -4,7 +4,7 @@
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* External declarations pertaining to backend/utils/misc/guc.c and
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* backend/utils/misc/guc-file.l
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*
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* $Id: guc.h,v 1.19 2002/07/20 15:12:56 tgl Exp $
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* $Id: guc.h,v 1.20 2002/07/30 16:20:03 momjian Exp $
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*/
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#ifndefGUC_H
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#defineGUC_H
@@ -87,7 +87,7 @@ extern bool set_config_option(const char *name, const char *value,
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externvoidShowGUCConfigOption(constchar*name);
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externvoidShowAllGUCConfig(void);
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externchar*GetConfigOptionByName(constchar*name,constchar**varname);
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externchar*GetConfigOptionByNum(intvarnum,constchar**varname);
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externchar*GetConfigOptionByNum(intvarnum,constchar**varname,bool*noshow);
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externintGetNumConfigOptions(void);
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externvoidSetPGVariable(constchar*name,List*args,boolis_local);

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