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2ff501590b
Also performed an initial run through of upgrading our Copyright date to extend to 2005 ... first run here was very simple ... change everything where: grep 1996-2004 && the word 'Copyright' ... scanned through the generated list with 'less' first, and after, to make sure that I only picked up the right entries ...
125 lines
2.6 KiB
C
125 lines
2.6 KiB
C
/*-------------------------------------------------------------------------
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*
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* params.c
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* Support functions for plan parameter lists.
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*
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* Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* IDENTIFICATION
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* $PostgreSQL: pgsql/src/backend/nodes/params.c,v 1.4 2004/12/31 21:59:55 pgsql Exp $
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*
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*-------------------------------------------------------------------------
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*/
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#include "postgres.h"
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#include "nodes/params.h"
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#include "utils/datum.h"
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#include "utils/lsyscache.h"
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/*
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* Copy a ParamList.
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*
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* The result is allocated in CurrentMemoryContext.
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*/
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ParamListInfo
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copyParamList(ParamListInfo from)
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{
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ParamListInfo retval;
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int i,
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size;
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if (from == NULL)
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return NULL;
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size = 0;
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while (from[size].kind != PARAM_INVALID)
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size++;
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retval = (ParamListInfo) palloc0((size + 1) * sizeof(ParamListInfoData));
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for (i = 0; i < size; i++)
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{
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/* copy metadata */
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retval[i].kind = from[i].kind;
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if (from[i].kind == PARAM_NAMED)
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retval[i].name = pstrdup(from[i].name);
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retval[i].id = from[i].id;
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retval[i].ptype = from[i].ptype;
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/* copy value */
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retval[i].isnull = from[i].isnull;
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if (from[i].isnull)
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{
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retval[i].value = from[i].value; /* nulls just copy */
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}
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else
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{
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int16 typLen;
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bool typByVal;
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get_typlenbyval(from[i].ptype, &typLen, &typByVal);
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retval[i].value = datumCopy(from[i].value, typByVal, typLen);
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}
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}
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retval[size].kind = PARAM_INVALID;
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return retval;
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}
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/*
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* Search a ParamList for a given parameter.
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*
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* On success, returns a pointer to the parameter's entry.
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* On failure, returns NULL if noError is true, else ereports the error.
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*/
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ParamListInfo
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lookupParam(ParamListInfo paramList, int thisParamKind,
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const char *thisParamName, AttrNumber thisParamId,
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bool noError)
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{
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if (paramList != NULL)
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{
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while (paramList->kind != PARAM_INVALID)
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{
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if (thisParamKind == paramList->kind)
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{
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switch (thisParamKind)
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{
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case PARAM_NAMED:
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if (strcmp(paramList->name, thisParamName) == 0)
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return paramList;
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break;
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case PARAM_NUM:
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if (paramList->id == thisParamId)
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return paramList;
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break;
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default:
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elog(ERROR, "unrecognized paramkind: %d",
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thisParamKind);
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}
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}
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paramList++;
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}
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}
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if (!noError)
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{
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if (thisParamKind == PARAM_NAMED)
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ereport(ERROR,
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(errcode(ERRCODE_UNDEFINED_OBJECT),
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errmsg("no value found for parameter \"%s\"",
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thisParamName)));
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else
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ereport(ERROR,
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(errcode(ERRCODE_UNDEFINED_OBJECT),
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errmsg("no value found for parameter %d",
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thisParamId)));
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}
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return NULL;
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}
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