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https://git.postgresql.org/git/postgresql.git
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2177 lines
52 KiB
C
2177 lines
52 KiB
C
/*-------------------------------------------------------------------------
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*
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* readfuncs.c
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* Reader functions for Postgres tree nodes.
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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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*
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* IDENTIFICATION
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* $Header: /cvsroot/pgsql/src/backend/nodes/readfuncs.c,v 1.69 1999/07/17 20:17:08 momjian Exp $
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*
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* NOTES
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* Most of the read functions for plan nodes are tested. (In fact, they
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* pass the regression test as of 11/8/94.) The rest (for path selection)
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* are probably never used. No effort has been made to get them to work.
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* The simplest way to test these functions is by doing the following in
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* ProcessQuery (before executing the plan):
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* plan = stringToNode(nodeToString(plan));
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* Then, run the regression test. Let's just say you'll notice if either
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* of the above function are not properly done.
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* - ay 11/94
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*
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*-------------------------------------------------------------------------
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*/
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#include <math.h>
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#include "postgres.h"
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#include "catalog/pg_index.h"
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#include "nodes/plannodes.h"
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#include "nodes/readfuncs.h"
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#include "nodes/relation.h"
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#include "utils/lsyscache.h"
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/* ----------------
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* node creator declarations
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* ----------------
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*/
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static Datum readDatum(Oid type);
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static List *
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toIntList(List *list)
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{
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List *l;
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foreach(l, list)
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{
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/* ugly manipulation, should probably free the Value node too */
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lfirst(l) = (void *) intVal(lfirst(l));
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}
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return list;
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}
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/* ----------------
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* _readQuery
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* ----------------
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*/
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static Query *
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_readQuery()
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{
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Query *local_node;
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char *token;
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int length;
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local_node = makeNode(Query);
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token = lsptok(NULL, &length); /* skip the :command */
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token = lsptok(NULL, &length); /* get the commandType */
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local_node->commandType = atoi(token);
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token = lsptok(NULL, &length); /* skip :utility */
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/* we can't get create or index here, can we? */
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token = lsptok(NULL, &length); /* get the notify name if any */
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if (length == 0)
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local_node->utilityStmt = NULL;
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else
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{
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NotifyStmt *n = makeNode(NotifyStmt);
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n->relname = palloc(length + 1);
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StrNCpy(n->relname, token, length + 1);
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local_node->utilityStmt = (Node *) n;
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}
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token = lsptok(NULL, &length); /* skip the :resultRelation */
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token = lsptok(NULL, &length); /* get the resultRelation */
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local_node->resultRelation = atoi(token);
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token = lsptok(NULL, &length); /* skip :into */
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token = lsptok(NULL, &length); /* get into */
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if (length == 0)
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local_node->into = NULL;
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else
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{
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local_node->into = palloc(length + 1);
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StrNCpy(local_node->into, token, length + 1);
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}
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token = lsptok(NULL, &length); /* skip :isPortal */
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token = lsptok(NULL, &length); /* get isPortal */
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local_node->isPortal = (token[0] == 't') ? true : false;
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token = lsptok(NULL, &length); /* skip :isBinary */
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token = lsptok(NULL, &length); /* get isBinary */
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local_node->isBinary = (token[0] == 't') ? true : false;
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token = lsptok(NULL, &length); /* skip :isTemp */
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token = lsptok(NULL, &length); /* get isTemp */
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local_node->isTemp = (token[0] == 't') ? true : false;
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token = lsptok(NULL, &length); /* skip :unionall */
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token = lsptok(NULL, &length); /* get unionall */
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local_node->unionall = (token[0] == 't') ? true : false;
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token = lsptok(NULL, &length); /* skip :uniqueFlag */
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token = lsptok(NULL, &length); /* get uniqueFlag */
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if (length == 0)
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local_node->uniqueFlag = NULL;
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else
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{
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local_node->uniqueFlag = palloc(length + 1);
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StrNCpy(local_node->uniqueFlag, token, length + 1);
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}
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token = lsptok(NULL, &length); /* skip :sortClause */
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local_node->sortClause = nodeRead(true);
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token = lsptok(NULL, &length); /* skip :rtable */
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local_node->rtable = nodeRead(true);
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token = lsptok(NULL, &length); /* skip :targetlist */
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local_node->targetList = nodeRead(true);
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token = lsptok(NULL, &length); /* skip :qual */
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local_node->qual = nodeRead(true);
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token = lsptok(NULL, &length); /* skip :groupClause */
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local_node->groupClause = nodeRead(true);
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token = lsptok(NULL, &length); /* skip :havingQual */
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local_node->havingQual = nodeRead(true);
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token = lsptok(NULL, &length); /* skip the :hasAggs */
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token = lsptok(NULL, &length); /* get hasAggs */
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local_node->hasAggs = (token[0] == 't') ? true : false;
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token = lsptok(NULL, &length); /* skip the :hasSubLinks */
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token = lsptok(NULL, &length); /* get hasSubLinks */
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local_node->hasSubLinks = (token[0] == 't') ? true : false;
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token = lsptok(NULL, &length); /* skip :unionClause */
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local_node->unionClause = nodeRead(true);
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token = lsptok(NULL, &length); /* skip :intersectClause */
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local_node->intersectClause = nodeRead(true);
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token = lsptok(NULL, &length); /* skip :limitOffset */
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local_node->limitOffset = nodeRead(true);
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token = lsptok(NULL, &length); /* skip :limitCount */
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local_node->limitCount = nodeRead(true);
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token = lsptok(NULL, &length); /* skip :rowMark */
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local_node->rowMark = nodeRead(true);
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return local_node;
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}
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/* ----------------
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* _readSortClause
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* ----------------
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*/
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static SortClause *
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_readSortClause()
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{
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SortClause *local_node;
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char *token;
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int length;
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local_node = makeNode(SortClause);
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token = lsptok(NULL, &length); /* skip the :resdom */
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local_node->resdom = nodeRead(true);
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token = lsptok(NULL, &length); /* skip :opoid */
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token = lsptok(NULL, &length); /* get opoid */
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local_node->opoid = strtoul(token, NULL, 10);
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return local_node;
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}
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/* ----------------
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* _readGroupClause
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* ----------------
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*/
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static GroupClause *
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_readGroupClause()
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{
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GroupClause *local_node;
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char *token;
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int length;
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local_node = makeNode(GroupClause);
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token = lsptok(NULL, &length); /* skip :grpOpoid */
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token = lsptok(NULL, &length); /* get grpOpoid */
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local_node->grpOpoid = strtoul(token, NULL, 10);
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token = lsptok(NULL, &length); /* skip :tleGroupref */
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token = lsptok(NULL, &length); /* get tleGroupref */
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local_node->tleGroupref = strtoul(token, NULL, 10);
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return local_node;
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}
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/* ----------------
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* _getPlan
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* ----------------
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*/
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static void
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_getPlan(Plan *node)
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{
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char *token;
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int length;
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token = lsptok(NULL, &length); /* first token is :cost */
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token = lsptok(NULL, &length); /* next is the actual cost */
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node->cost = (Cost) atof(token);
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token = lsptok(NULL, &length); /* skip the :size */
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token = lsptok(NULL, &length); /* get the plan_size */
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node->plan_size = atoi(token);
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token = lsptok(NULL, &length); /* skip the :width */
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token = lsptok(NULL, &length); /* get the plan_width */
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node->plan_width = atoi(token);
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token = lsptok(NULL, &length); /* eat the :state stuff */
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token = lsptok(NULL, &length); /* now get the state */
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if (length == 0)
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node->state = (EState *) NULL;
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else
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{ /* Disgusting hack until I figure out what
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* to do here */
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node->state = (EState *) !NULL;
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}
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token = lsptok(NULL, &length); /* eat :qptargetlist */
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node->targetlist = nodeRead(true);
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token = lsptok(NULL, &length); /* eat :qpqual */
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node->qual = nodeRead(true);
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token = lsptok(NULL, &length); /* eat :lefttree */
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node->lefttree = (Plan *) nodeRead(true);
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token = lsptok(NULL, &length); /* eat :righttree */
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node->righttree = (Plan *) nodeRead(true);
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return;
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}
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/*
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* Stuff from plannodes.h
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*/
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/* ----------------
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* _readPlan
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* ----------------
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*/
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static Plan *
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_readPlan()
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{
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Plan *local_node;
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local_node = makeNode(Plan);
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_getPlan(local_node);
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return local_node;
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}
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/* ----------------
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* _readResult
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*
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* Does some obscene, possibly unportable, magic with
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* sizes of things.
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* ----------------
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*/
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static Result *
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_readResult()
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{
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Result *local_node;
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char *token;
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int length;
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local_node = makeNode(Result);
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_getPlan((Plan *) local_node);
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token = lsptok(NULL, &length); /* eat :resconstantqual */
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local_node->resconstantqual = nodeRead(true); /* now read it */
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return local_node;
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}
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/* ----------------
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* _readAppend
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*
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* Append is a subclass of Plan.
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* ----------------
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*/
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static Append *
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_readAppend()
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{
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Append *local_node;
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char *token;
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int length;
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local_node = makeNode(Append);
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_getPlan((Plan *) local_node);
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token = lsptok(NULL, &length); /* eat :appendplans */
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local_node->appendplans = nodeRead(true); /* now read it */
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token = lsptok(NULL, &length); /* eat :unionrtables */
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local_node->unionrtables = nodeRead(true); /* now read it */
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token = lsptok(NULL, &length); /* eat :inheritrelid */
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token = lsptok(NULL, &length); /* get inheritrelid */
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local_node->inheritrelid = strtoul(token, NULL, 10);
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token = lsptok(NULL, &length); /* eat :inheritrtable */
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local_node->inheritrtable = nodeRead(true); /* now read it */
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return local_node;
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}
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/* ----------------
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* _getJoin
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*
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* In case Join is not the same structure as Plan someday.
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* ----------------
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*/
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static void
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_getJoin(Join *node)
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{
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_getPlan((Plan *) node);
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}
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/* ----------------
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* _readJoin
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*
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* Join is a subclass of Plan
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* ----------------
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*/
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static Join *
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_readJoin()
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{
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Join *local_node;
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local_node = makeNode(Join);
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_getJoin(local_node);
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return local_node;
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}
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/* ----------------
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* _readNestLoop
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*
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* NestLoop is a subclass of Join
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* ----------------
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*/
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static NestLoop *
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_readNestLoop()
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{
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NestLoop *local_node;
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local_node = makeNode(NestLoop);
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_getJoin((Join *) local_node);
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return local_node;
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}
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/* ----------------
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* _readMergeJoin
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*
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* MergeJoin is a subclass of Join
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* ----------------
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*/
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static MergeJoin *
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_readMergeJoin()
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{
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MergeJoin *local_node;
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char *token;
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int length;
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local_node = makeNode(MergeJoin);
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_getJoin((Join *) local_node);
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token = lsptok(NULL, &length); /* eat :mergeclauses */
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local_node->mergeclauses = nodeRead(true); /* now read it */
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return local_node;
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}
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/* ----------------
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* _readHashJoin
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*
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* HashJoin is a subclass of Join.
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* ----------------
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*/
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static HashJoin *
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_readHashJoin()
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{
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HashJoin *local_node;
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char *token;
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int length;
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local_node = makeNode(HashJoin);
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_getJoin((Join *) local_node);
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token = lsptok(NULL, &length); /* eat :hashclauses */
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local_node->hashclauses = nodeRead(true); /* now read it */
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token = lsptok(NULL, &length); /* eat :hashjoinop */
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token = lsptok(NULL, &length); /* get hashjoinop */
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local_node->hashjoinop = strtoul(token, NULL, 10);
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token = lsptok(NULL, &length); /* eat :hashdone */
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token = lsptok(NULL, &length); /* eat hashdone */
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local_node->hashdone = false;
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return local_node;
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}
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/* ----------------
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* _getScan
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*
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* Scan is a subclass of Node
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* (Actually, according to the plannodes.h include file, it is a
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* subclass of Plan. This is why _getPlan is used here.)
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*
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* Scan gets its own get function since stuff inherits it.
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* ----------------
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*/
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static void
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_getScan(Scan *node)
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{
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char *token;
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int length;
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_getPlan((Plan *) node);
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token = lsptok(NULL, &length); /* eat :scanrelid */
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token = lsptok(NULL, &length); /* get scanrelid */
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node->scanrelid = strtoul(token, NULL, 10);
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}
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/* ----------------
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* _readScan
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*
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* Scan is a subclass of Plan (Not Node, see above).
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* ----------------
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*/
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static Scan *
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_readScan()
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{
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Scan *local_node;
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local_node = makeNode(Scan);
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_getScan(local_node);
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return local_node;
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}
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/* ----------------
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* _readSeqScan
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*
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* SeqScan is a subclass of Scan
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* ----------------
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*/
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static SeqScan *
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_readSeqScan()
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{
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SeqScan *local_node;
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local_node = makeNode(SeqScan);
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_getScan((Scan *) local_node);
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return local_node;
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}
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|
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/* ----------------
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* _readIndexScan
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*
|
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* IndexScan is a subclass of Scan
|
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* ----------------
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*/
|
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static IndexScan *
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_readIndexScan()
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{
|
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IndexScan *local_node;
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char *token;
|
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int length;
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|
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local_node = makeNode(IndexScan);
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_getScan((Scan *) local_node);
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token = lsptok(NULL, &length); /* eat :indxid */
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local_node->indxid = toIntList(nodeRead(true)); /* now read it */
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token = lsptok(NULL, &length); /* eat :indxqual */
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local_node->indxqual = nodeRead(true); /* now read it */
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token = lsptok(NULL, &length); /* eat :indxqualorig */
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local_node->indxqualorig = nodeRead(true); /* now read it */
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return local_node;
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|
}
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|
|
/* ----------------
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|
* _readNoname
|
|
*
|
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* Noname is a subclass of Plan
|
|
* ----------------
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|
*/
|
|
static Noname *
|
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_readNoname()
|
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{
|
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Noname *local_node;
|
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char *token;
|
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int length;
|
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|
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local_node = makeNode(Noname);
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|
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_getPlan((Plan *) local_node);
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token = lsptok(NULL, &length); /* eat :nonameid */
|
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token = lsptok(NULL, &length); /* get nonameid */
|
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local_node->nonameid = atol(token);
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|
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token = lsptok(NULL, &length); /* eat :keycount */
|
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token = lsptok(NULL, &length); /* get keycount */
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local_node->keycount = atoi(token);
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|
|
return local_node;
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}
|
|
|
|
/* ----------------
|
|
* _readSort
|
|
*
|
|
* Sort is a subclass of Noname
|
|
* ----------------
|
|
*/
|
|
static Sort *
|
|
_readSort()
|
|
{
|
|
Sort *local_node;
|
|
char *token;
|
|
int length;
|
|
|
|
local_node = makeNode(Sort);
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|
|
|
_getPlan((Plan *) local_node);
|
|
|
|
token = lsptok(NULL, &length); /* eat :nonameid */
|
|
token = lsptok(NULL, &length); /* get nonameid */
|
|
local_node->nonameid = atol(token);
|
|
|
|
token = lsptok(NULL, &length); /* eat :keycount */
|
|
token = lsptok(NULL, &length); /* get keycount */
|
|
local_node->keycount = atoi(token);
|
|
|
|
return local_node;
|
|
}
|
|
|
|
static Agg *
|
|
_readAgg()
|
|
{
|
|
Agg *local_node;
|
|
char *token;
|
|
int length;
|
|
|
|
local_node = makeNode(Agg);
|
|
_getPlan((Plan *) local_node);
|
|
|
|
token = lsptok(NULL, &length); /* eat :agg */
|
|
local_node->aggs = nodeRead(true); /* now read it */
|
|
|
|
return local_node;
|
|
}
|
|
|
|
/* ----------------
|
|
* _readUnique
|
|
*
|
|
* For some reason, unique is a subclass of Noname.
|
|
*/
|
|
static Unique *
|
|
_readUnique()
|
|
{
|
|
Unique *local_node;
|
|
char *token;
|
|
int length;
|
|
|
|
local_node = makeNode(Unique);
|
|
|
|
_getPlan((Plan *) local_node);
|
|
|
|
token = lsptok(NULL, &length); /* eat :nonameid */
|
|
token = lsptok(NULL, &length); /* get :nonameid */
|
|
local_node->nonameid = atol(token);
|
|
|
|
token = lsptok(NULL, &length); /* eat :keycount */
|
|
token = lsptok(NULL, &length); /* get :keycount */
|
|
local_node->keycount = atoi(token);
|
|
|
|
return local_node;
|
|
}
|
|
|
|
/* ----------------
|
|
* _readHash
|
|
*
|
|
* Hash is a subclass of Noname
|
|
* ----------------
|
|
*/
|
|
static Hash *
|
|
_readHash()
|
|
{
|
|
Hash *local_node;
|
|
char *token;
|
|
int length;
|
|
|
|
local_node = makeNode(Hash);
|
|
|
|
_getPlan((Plan *) local_node);
|
|
|
|
token = lsptok(NULL, &length); /* eat :hashkey */
|
|
local_node->hashkey = (Var *) nodeRead(true);
|
|
|
|
return local_node;
|
|
}
|
|
|
|
/*
|
|
* Stuff from primnodes.h.
|
|
*/
|
|
|
|
/* ----------------
|
|
* _readResdom
|
|
*
|
|
* Resdom is a subclass of Node
|
|
* ----------------
|
|
*/
|
|
static Resdom *
|
|
_readResdom()
|
|
{
|
|
Resdom *local_node;
|
|
char *token;
|
|
int length;
|
|
|
|
local_node = makeNode(Resdom);
|
|
|
|
token = lsptok(NULL, &length); /* eat :resno */
|
|
token = lsptok(NULL, &length); /* get resno */
|
|
local_node->resno = atoi(token);
|
|
|
|
token = lsptok(NULL, &length); /* eat :restype */
|
|
token = lsptok(NULL, &length); /* get restype */
|
|
local_node->restype = atol(token);
|
|
|
|
token = lsptok(NULL, &length); /* eat :restypmod */
|
|
token = lsptok(NULL, &length); /* get restypmod */
|
|
local_node->restypmod = atoi(token);
|
|
|
|
token = lsptok(NULL, &length); /* eat :resname */
|
|
token = lsptok(NULL, &length); /* get the name */
|
|
|
|
if (length == 0)
|
|
local_node->resname = NULL;
|
|
else
|
|
{
|
|
local_node->resname = (char *) palloc(length + 1);
|
|
StrNCpy(local_node->resname, token + 1, length + 1 - 2); /* strip quotes */
|
|
}
|
|
|
|
token = lsptok(NULL, &length); /* eat :reskey */
|
|
token = lsptok(NULL, &length); /* get reskey */
|
|
local_node->reskey = strtoul(token, NULL, 10);
|
|
|
|
token = lsptok(NULL, &length); /* eat :reskeyop */
|
|
token = lsptok(NULL, &length); /* get reskeyop */
|
|
local_node->reskeyop = (Oid) atol(token);
|
|
|
|
token = lsptok(NULL, &length); /* eat :resgroupref */
|
|
token = lsptok(NULL, &length); /* get resgroupref */
|
|
local_node->resgroupref = strtoul(token, NULL, 10);
|
|
|
|
token = lsptok(NULL, &length); /* eat :resjunk */
|
|
token = lsptok(NULL, &length); /* get resjunk */
|
|
local_node->resjunk = (token[0] == 't') ? true : false;
|
|
|
|
return local_node;
|
|
}
|
|
|
|
/* ----------------
|
|
* _readExpr
|
|
*
|
|
* Expr is a subclass of Node
|
|
* ----------------
|
|
*/
|
|
static Expr *
|
|
_readExpr()
|
|
{
|
|
Expr *local_node;
|
|
char *token;
|
|
int length;
|
|
|
|
local_node = makeNode(Expr);
|
|
|
|
token = lsptok(NULL, &length); /* eat :typeOid */
|
|
token = lsptok(NULL, &length); /* get typeOid */
|
|
local_node->typeOid = (Oid) atol(token);
|
|
|
|
token = lsptok(NULL, &length); /* eat :opType */
|
|
token = lsptok(NULL, &length); /* get opType */
|
|
if (!strncmp(token, "op", 2))
|
|
local_node->opType = OP_EXPR;
|
|
else if (!strncmp(token, "func", 4))
|
|
local_node->opType = FUNC_EXPR;
|
|
else if (!strncmp(token, "or", 2))
|
|
local_node->opType = OR_EXPR;
|
|
else if (!strncmp(token, "and", 3))
|
|
local_node->opType = AND_EXPR;
|
|
else if (!strncmp(token, "not", 3))
|
|
local_node->opType = NOT_EXPR;
|
|
else if (!strncmp(token, "subp", 4))
|
|
local_node->opType = SUBPLAN_EXPR;
|
|
|
|
token = lsptok(NULL, &length); /* eat :oper */
|
|
local_node->oper = nodeRead(true);
|
|
|
|
token = lsptok(NULL, &length); /* eat :args */
|
|
local_node->args = nodeRead(true); /* now read it */
|
|
|
|
return local_node;
|
|
}
|
|
|
|
/* ----------------
|
|
* _readCaseExpr
|
|
*
|
|
* CaseExpr is a subclass of Node
|
|
* ----------------
|
|
*/
|
|
static CaseExpr *
|
|
_readCaseExpr()
|
|
{
|
|
CaseExpr *local_node;
|
|
char *token;
|
|
int length;
|
|
|
|
local_node = makeNode(CaseExpr);
|
|
|
|
local_node->args = nodeRead(true);
|
|
token = lsptok(NULL, &length); /* eat :default */
|
|
local_node->defresult = nodeRead(true);
|
|
|
|
return local_node;
|
|
}
|
|
|
|
/* ----------------
|
|
* _readCaseWhen
|
|
*
|
|
* CaseWhen is a subclass of Node
|
|
* ----------------
|
|
*/
|
|
static CaseWhen *
|
|
_readCaseWhen()
|
|
{
|
|
CaseWhen *local_node;
|
|
char *token;
|
|
int length;
|
|
|
|
local_node = makeNode(CaseWhen);
|
|
|
|
local_node->expr = nodeRead(true);
|
|
token = lsptok(NULL, &length); /* eat :then */
|
|
local_node->result = nodeRead(true);
|
|
|
|
return local_node;
|
|
}
|
|
|
|
/* ----------------
|
|
* _readVar
|
|
*
|
|
* Var is a subclass of Expr
|
|
* ----------------
|
|
*/
|
|
static Var *
|
|
_readVar()
|
|
{
|
|
Var *local_node;
|
|
char *token;
|
|
int length;
|
|
|
|
local_node = makeNode(Var);
|
|
|
|
token = lsptok(NULL, &length); /* eat :varno */
|
|
token = lsptok(NULL, &length); /* get varno */
|
|
local_node->varno = strtoul(token, NULL, 10);
|
|
|
|
token = lsptok(NULL, &length); /* eat :varattno */
|
|
token = lsptok(NULL, &length); /* get varattno */
|
|
local_node->varattno = atoi(token);
|
|
|
|
token = lsptok(NULL, &length); /* eat :vartype */
|
|
token = lsptok(NULL, &length); /* get vartype */
|
|
local_node->vartype = (Oid) atol(token);
|
|
|
|
token = lsptok(NULL, &length); /* eat :vartypmod */
|
|
token = lsptok(NULL, &length); /* get vartypmod */
|
|
local_node->vartypmod = atoi(token);
|
|
|
|
token = lsptok(NULL, &length); /* eat :varlevelsup */
|
|
token = lsptok(NULL, &length); /* get varlevelsup */
|
|
local_node->varlevelsup = (Oid) atol(token);
|
|
|
|
token = lsptok(NULL, &length); /* eat :varnoold */
|
|
token = lsptok(NULL, &length); /* get varnoold */
|
|
local_node->varnoold = (Oid) atol(token);
|
|
|
|
token = lsptok(NULL, &length); /* eat :varoattno */
|
|
token = lsptok(NULL, &length); /* eat :varoattno */
|
|
local_node->varoattno = (int) atol(token);
|
|
|
|
return local_node;
|
|
}
|
|
|
|
/* ----------------
|
|
* _readArray
|
|
*
|
|
* Array is a subclass of Expr
|
|
* ----------------
|
|
*/
|
|
static Array *
|
|
_readArray()
|
|
{
|
|
Array *local_node;
|
|
char *token;
|
|
int length;
|
|
|
|
local_node = makeNode(Array);
|
|
|
|
token = lsptok(NULL, &length); /* eat :arrayelemtype */
|
|
token = lsptok(NULL, &length); /* get arrayelemtype */
|
|
local_node->arrayelemtype = strtoul(token, NULL, 10);
|
|
|
|
token = lsptok(NULL, &length); /* eat :arrayelemlength */
|
|
token = lsptok(NULL, &length); /* get arrayelemlength */
|
|
local_node->arrayelemlength = atoi(token);
|
|
|
|
token = lsptok(NULL, &length); /* eat :arrayelembyval */
|
|
token = lsptok(NULL, &length); /* get arrayelembyval */
|
|
local_node->arrayelembyval = (token[0] == 't') ? true : false;
|
|
|
|
token = lsptok(NULL, &length); /* eat :arraylow */
|
|
token = lsptok(NULL, &length); /* get arraylow */
|
|
local_node->arraylow.indx[0] = atoi(token);
|
|
|
|
token = lsptok(NULL, &length); /* eat :arrayhigh */
|
|
token = lsptok(NULL, &length); /* get arrayhigh */
|
|
local_node->arrayhigh.indx[0] = atoi(token);
|
|
|
|
token = lsptok(NULL, &length); /* eat :arraylen */
|
|
token = lsptok(NULL, &length); /* get arraylen */
|
|
local_node->arraylen = atoi(token);
|
|
|
|
return local_node;
|
|
}
|
|
|
|
/* ----------------
|
|
* _readArrayRef
|
|
*
|
|
* ArrayRef is a subclass of Expr
|
|
* ----------------
|
|
*/
|
|
static ArrayRef *
|
|
_readArrayRef()
|
|
{
|
|
ArrayRef *local_node;
|
|
char *token;
|
|
int length;
|
|
|
|
local_node = makeNode(ArrayRef);
|
|
|
|
token = lsptok(NULL, &length); /* eat :refelemtype */
|
|
token = lsptok(NULL, &length); /* get refelemtype */
|
|
local_node->refelemtype = strtoul(token, NULL, 10);
|
|
|
|
token = lsptok(NULL, &length); /* eat :refattrlength */
|
|
token = lsptok(NULL, &length); /* get refattrlength */
|
|
local_node->refattrlength = atoi(token);
|
|
|
|
token = lsptok(NULL, &length); /* eat :refelemlength */
|
|
token = lsptok(NULL, &length); /* get refelemlength */
|
|
local_node->refelemlength = atoi(token);
|
|
|
|
token = lsptok(NULL, &length); /* eat :refelembyval */
|
|
token = lsptok(NULL, &length); /* get refelembyval */
|
|
local_node->refelembyval = (token[0] == 't') ? true : false;
|
|
|
|
token = lsptok(NULL, &length); /* eat :refupperindex */
|
|
local_node->refupperindexpr = nodeRead(true);
|
|
|
|
token = lsptok(NULL, &length); /* eat :reflowerindex */
|
|
local_node->reflowerindexpr = nodeRead(true);
|
|
|
|
token = lsptok(NULL, &length); /* eat :refexpr */
|
|
local_node->refexpr = nodeRead(true);
|
|
|
|
token = lsptok(NULL, &length); /* eat :refassgnexpr */
|
|
local_node->refassgnexpr = nodeRead(true);
|
|
|
|
return local_node;
|
|
}
|
|
|
|
/* ----------------
|
|
* _readConst
|
|
*
|
|
* Const is a subclass of Expr
|
|
* ----------------
|
|
*/
|
|
static Const *
|
|
_readConst()
|
|
{
|
|
Const *local_node;
|
|
char *token;
|
|
int length;
|
|
|
|
local_node = makeNode(Const);
|
|
|
|
token = lsptok(NULL, &length); /* get :consttype */
|
|
token = lsptok(NULL, &length); /* now read it */
|
|
local_node->consttype = atol(token);
|
|
|
|
|
|
token = lsptok(NULL, &length); /* get :constlen */
|
|
token = lsptok(NULL, &length); /* now read it */
|
|
local_node->constlen = strtol(token, NULL, 10);
|
|
|
|
token = lsptok(NULL, &length); /* get :constisnull */
|
|
token = lsptok(NULL, &length); /* now read it */
|
|
|
|
if (!strncmp(token, "true", 4))
|
|
local_node->constisnull = true;
|
|
else
|
|
local_node->constisnull = false;
|
|
|
|
|
|
token = lsptok(NULL, &length); /* get :constvalue */
|
|
|
|
if (local_node->constisnull)
|
|
{
|
|
token = lsptok(NULL, &length); /* skip "NIL" */
|
|
}
|
|
else
|
|
{
|
|
|
|
/*
|
|
* read the value
|
|
*/
|
|
local_node->constvalue = readDatum(local_node->consttype);
|
|
}
|
|
|
|
token = lsptok(NULL, &length); /* get :constbyval */
|
|
token = lsptok(NULL, &length); /* now read it */
|
|
|
|
if (!strncmp(token, "true", 4))
|
|
local_node->constbyval = true;
|
|
else
|
|
local_node->constbyval = false;
|
|
|
|
return local_node;
|
|
}
|
|
|
|
/* ----------------
|
|
* _readFunc
|
|
*
|
|
* Func is a subclass of Expr
|
|
* ----------------
|
|
*/
|
|
static Func *
|
|
_readFunc()
|
|
{
|
|
Func *local_node;
|
|
char *token;
|
|
int length;
|
|
|
|
local_node = makeNode(Func);
|
|
|
|
token = lsptok(NULL, &length); /* get :funcid */
|
|
token = lsptok(NULL, &length); /* now read it */
|
|
local_node->funcid = atol(token);
|
|
|
|
token = lsptok(NULL, &length); /* get :functype */
|
|
token = lsptok(NULL, &length); /* now read it */
|
|
local_node->functype = atol(token);
|
|
|
|
token = lsptok(NULL, &length); /* get :funcisindex */
|
|
token = lsptok(NULL, &length); /* now read it */
|
|
|
|
if (!strncmp(token, "true", 4))
|
|
local_node->funcisindex = true;
|
|
else
|
|
local_node->funcisindex = false;
|
|
|
|
token = lsptok(NULL, &length); /* get :funcsize */
|
|
token = lsptok(NULL, &length); /* now read it */
|
|
local_node->funcsize = atol(token);
|
|
|
|
token = lsptok(NULL, &length); /* get :func_fcache */
|
|
token = lsptok(NULL, &length); /* get @ */
|
|
token = lsptok(NULL, &length); /* now read it */
|
|
|
|
local_node->func_fcache = (FunctionCache *) NULL;
|
|
|
|
token = lsptok(NULL, &length); /* get :func_tlist */
|
|
local_node->func_tlist = nodeRead(true); /* now read it */
|
|
|
|
token = lsptok(NULL, &length); /* get :func_planlist */
|
|
local_node->func_planlist = nodeRead(true); /* now read it */
|
|
|
|
return local_node;
|
|
}
|
|
|
|
/* ----------------
|
|
* _readOper
|
|
*
|
|
* Oper is a subclass of Expr
|
|
* ----------------
|
|
*/
|
|
static Oper *
|
|
_readOper()
|
|
{
|
|
Oper *local_node;
|
|
char *token;
|
|
int length;
|
|
|
|
local_node = makeNode(Oper);
|
|
|
|
token = lsptok(NULL, &length); /* get :opno */
|
|
token = lsptok(NULL, &length); /* now read it */
|
|
local_node->opno = atol(token);
|
|
|
|
token = lsptok(NULL, &length); /* get :opid */
|
|
token = lsptok(NULL, &length); /* now read it */
|
|
local_node->opid = atol(token);
|
|
|
|
token = lsptok(NULL, &length); /* get :opresulttype */
|
|
token = lsptok(NULL, &length); /* now read it */
|
|
local_node->opresulttype = atol(token);
|
|
|
|
/*
|
|
* NOTE: Alternatively we can call 'replace_opid' which initializes
|
|
* both 'opid' and 'op_fcache'.
|
|
*/
|
|
local_node->op_fcache = (FunctionCache *) NULL;
|
|
|
|
return local_node;
|
|
}
|
|
|
|
/* ----------------
|
|
* _readParam
|
|
*
|
|
* Param is a subclass of Expr
|
|
* ----------------
|
|
*/
|
|
static Param *
|
|
_readParam()
|
|
{
|
|
Param *local_node;
|
|
char *token;
|
|
int length;
|
|
|
|
local_node = makeNode(Param);
|
|
|
|
token = lsptok(NULL, &length); /* get :paramkind */
|
|
token = lsptok(NULL, &length); /* now read it */
|
|
local_node->paramkind = atoi(token);
|
|
|
|
token = lsptok(NULL, &length); /* get :paramid */
|
|
token = lsptok(NULL, &length); /* now read it */
|
|
local_node->paramid = atol(token);
|
|
|
|
token = lsptok(NULL, &length); /* get :paramname */
|
|
token = lsptok(NULL, &length); /* now read it */
|
|
if (length == 0)
|
|
local_node->paramname = NULL;
|
|
else
|
|
{
|
|
local_node->paramname = (char *) palloc(length + 1);
|
|
StrNCpy(local_node->paramname, token, length + 1);
|
|
}
|
|
|
|
token = lsptok(NULL, &length); /* get :paramtype */
|
|
token = lsptok(NULL, &length); /* now read it */
|
|
|
|
local_node->paramtype = atol(token);
|
|
token = lsptok(NULL, &length); /* get :param_tlist */
|
|
local_node->param_tlist = nodeRead(true); /* now read it */
|
|
|
|
return local_node;
|
|
}
|
|
|
|
/* ----------------
|
|
* _readAggref
|
|
*
|
|
* Aggref is a subclass of Node
|
|
* ----------------
|
|
*/
|
|
static Aggref *
|
|
_readAggref()
|
|
{
|
|
Aggref *local_node;
|
|
char *token;
|
|
int length;
|
|
|
|
local_node = makeNode(Aggref);
|
|
|
|
token = lsptok(NULL, &length); /* eat :aggname */
|
|
token = lsptok(NULL, &length); /* get aggname */
|
|
local_node->aggname = (char *) palloc(length + 1);
|
|
StrNCpy(local_node->aggname, token, length + 1);
|
|
|
|
token = lsptok(NULL, &length); /* eat :basetype */
|
|
token = lsptok(NULL, &length); /* get basetype */
|
|
local_node->basetype = (Oid) atol(token);
|
|
|
|
token = lsptok(NULL, &length); /* eat :aggtype */
|
|
token = lsptok(NULL, &length); /* get aggtype */
|
|
local_node->aggtype = (Oid) atol(token);
|
|
|
|
token = lsptok(NULL, &length); /* eat :target */
|
|
local_node->target = nodeRead(true); /* now read it */
|
|
|
|
token = lsptok(NULL, &length); /* eat :aggno */
|
|
token = lsptok(NULL, &length); /* get aggno */
|
|
local_node->aggno = atoi(token);
|
|
|
|
token = lsptok(NULL, &length); /* eat :usenulls */
|
|
token = lsptok(NULL, &length); /* get usenulls */
|
|
local_node->usenulls = (token[0] == 't') ? true : false;
|
|
|
|
return local_node;
|
|
}
|
|
|
|
/* ----------------
|
|
* _readSubLink
|
|
*
|
|
* SubLink is a subclass of Node
|
|
* ----------------
|
|
*/
|
|
static SubLink *
|
|
_readSubLink()
|
|
{
|
|
SubLink *local_node;
|
|
char *token;
|
|
int length;
|
|
|
|
local_node = makeNode(SubLink);
|
|
|
|
token = lsptok(NULL, &length); /* eat :subLinkType */
|
|
token = lsptok(NULL, &length); /* get subLinkType */
|
|
local_node->subLinkType = atoi(token);
|
|
|
|
token = lsptok(NULL, &length); /* eat :useor */
|
|
token = lsptok(NULL, &length); /* get useor */
|
|
local_node->useor = (token[0] == 't') ? true : false;
|
|
|
|
token = lsptok(NULL, &length); /* eat :lefthand */
|
|
local_node->lefthand = nodeRead(true); /* now read it */
|
|
|
|
token = lsptok(NULL, &length); /* eat :oper */
|
|
local_node->oper = nodeRead(true); /* now read it */
|
|
|
|
token = lsptok(NULL, &length); /* eat :subselect */
|
|
local_node->subselect = nodeRead(true); /* now read it */
|
|
|
|
return local_node;
|
|
}
|
|
|
|
/*
|
|
* Stuff from execnodes.h
|
|
*/
|
|
|
|
/* ----------------
|
|
* _readEState
|
|
*
|
|
* EState is a subclass of Node.
|
|
* ----------------
|
|
*/
|
|
static EState *
|
|
_readEState()
|
|
{
|
|
EState *local_node;
|
|
char *token;
|
|
int length;
|
|
|
|
local_node = makeNode(EState);
|
|
|
|
token = lsptok(NULL, &length); /* get :direction */
|
|
token = lsptok(NULL, &length); /* now read it */
|
|
|
|
local_node->es_direction = atoi(token);
|
|
|
|
token = lsptok(NULL, &length); /* get :range_table */
|
|
|
|
local_node->es_range_table = nodeRead(true); /* now read it */
|
|
|
|
token = lsptok(NULL, &length); /* get :result_relation_info */
|
|
token = lsptok(NULL, &length); /* get @ */
|
|
token = lsptok(NULL, &length); /* now read it */
|
|
|
|
sscanf(token, "%x", (unsigned int *) &local_node->es_result_relation_info);
|
|
|
|
return local_node;
|
|
}
|
|
|
|
/*
|
|
* Stuff from relation.h
|
|
*/
|
|
|
|
/* ----------------
|
|
* _readRelOptInfo
|
|
* ----------------
|
|
*/
|
|
static RelOptInfo *
|
|
_readRelOptInfo()
|
|
{
|
|
RelOptInfo *local_node;
|
|
char *token;
|
|
int length;
|
|
|
|
local_node = makeNode(RelOptInfo);
|
|
|
|
token = lsptok(NULL, &length); /* get :relids */
|
|
local_node->relids = toIntList(nodeRead(true)); /* now read it */
|
|
|
|
token = lsptok(NULL, &length); /* get :indexed */
|
|
token = lsptok(NULL, &length); /* now read it */
|
|
|
|
if (!strncmp(token, "true", 4))
|
|
local_node->indexed = true;
|
|
else
|
|
local_node->indexed = false;
|
|
|
|
token = lsptok(NULL, &length); /* get :pages */
|
|
token = lsptok(NULL, &length); /* now read it */
|
|
local_node->pages = (unsigned int) atoi(token);
|
|
|
|
token = lsptok(NULL, &length); /* get :tuples */
|
|
token = lsptok(NULL, &length); /* now read it */
|
|
local_node->tuples = (unsigned int) atoi(token);
|
|
|
|
token = lsptok(NULL, &length); /* get :size */
|
|
token = lsptok(NULL, &length); /* now read it */
|
|
local_node->size = (unsigned int) atoi(token);
|
|
|
|
token = lsptok(NULL, &length); /* get :width */
|
|
token = lsptok(NULL, &length); /* now read it */
|
|
local_node->width = (unsigned int) atoi(token);
|
|
|
|
token = lsptok(NULL, &length); /* get :targetlist */
|
|
local_node->targetlist = nodeRead(true); /* now read it */
|
|
|
|
token = lsptok(NULL, &length); /* get :pathlist */
|
|
local_node->pathlist = nodeRead(true); /* now read it */
|
|
|
|
/*
|
|
* Not sure if these are nodes or not. They're declared as struct
|
|
* Path *. Since i don't know, i'll just print the addresses for now.
|
|
* This can be changed later, if necessary.
|
|
*/
|
|
|
|
token = lsptok(NULL, &length); /* get :cheapestpath */
|
|
token = lsptok(NULL, &length); /* get @ */
|
|
token = lsptok(NULL, &length); /* now read it */
|
|
|
|
sscanf(token, "%x", (unsigned int *) &local_node->cheapestpath);
|
|
|
|
|
|
token = lsptok(NULL, &length); /* get :restrictinfo */
|
|
local_node->restrictinfo = nodeRead(true); /* now read it */
|
|
|
|
token = lsptok(NULL, &length); /* get :joininfo */
|
|
local_node->joininfo = nodeRead(true); /* now read it */
|
|
|
|
token = lsptok(NULL, &length); /* get :innerjoin */
|
|
local_node->innerjoin = nodeRead(true); /* now read it */
|
|
|
|
return local_node;
|
|
}
|
|
|
|
/* ----------------
|
|
* _readTargetEntry
|
|
* ----------------
|
|
*/
|
|
static TargetEntry *
|
|
_readTargetEntry()
|
|
{
|
|
TargetEntry *local_node;
|
|
char *token;
|
|
int length;
|
|
|
|
local_node = makeNode(TargetEntry);
|
|
|
|
token = lsptok(NULL, &length); /* get :resdom */
|
|
local_node->resdom = nodeRead(true); /* now read it */
|
|
|
|
token = lsptok(NULL, &length); /* get :expr */
|
|
local_node->expr = nodeRead(true); /* now read it */
|
|
|
|
return local_node;
|
|
}
|
|
|
|
/* ----------------
|
|
* _readRangeTblEntry
|
|
* ----------------
|
|
*/
|
|
static RangeTblEntry *
|
|
_readRangeTblEntry()
|
|
{
|
|
RangeTblEntry *local_node;
|
|
char *token;
|
|
int length;
|
|
|
|
local_node = makeNode(RangeTblEntry);
|
|
|
|
token = lsptok(NULL, &length); /* eat :relname */
|
|
token = lsptok(NULL, &length); /* get :relname */
|
|
if (length == 0)
|
|
local_node->relname = NULL;
|
|
else
|
|
{
|
|
local_node->relname = (char *) palloc(length + 1);
|
|
StrNCpy(local_node->relname, token, length + 1);
|
|
}
|
|
|
|
token = lsptok(NULL, &length); /* eat :refname */
|
|
token = lsptok(NULL, &length); /* get :refname */
|
|
if (length == 0)
|
|
local_node->refname = NULL;
|
|
else
|
|
{
|
|
local_node->refname = (char *) palloc(length + 1);
|
|
StrNCpy(local_node->refname, token, length + 1);
|
|
}
|
|
|
|
token = lsptok(NULL, &length); /* eat :relid */
|
|
token = lsptok(NULL, &length); /* get :relid */
|
|
local_node->relid = strtoul(token, NULL, 10);
|
|
|
|
token = lsptok(NULL, &length); /* eat :inh */
|
|
token = lsptok(NULL, &length); /* get :inh */
|
|
local_node->inh = (token[0] == 't') ? true : false;
|
|
|
|
token = lsptok(NULL, &length); /* eat :inFromCl */
|
|
token = lsptok(NULL, &length); /* get :inFromCl */
|
|
local_node->inFromCl = (token[0] == 't') ? true : false;
|
|
|
|
token = lsptok(NULL, &length); /* eat :skipAcl */
|
|
token = lsptok(NULL, &length); /* get :skipAcl */
|
|
local_node->skipAcl = (token[0] == 't') ? true : false;
|
|
|
|
return local_node;
|
|
}
|
|
|
|
static RowMark *
|
|
_readRowMark()
|
|
{
|
|
RowMark *local_node = makeNode(RowMark);
|
|
char *token;
|
|
int length;
|
|
|
|
token = lsptok(NULL, &length); /* eat :rti */
|
|
token = lsptok(NULL, &length); /* get :rti */
|
|
local_node->rti = strtoul(token, NULL, 10);
|
|
|
|
token = lsptok(NULL, &length); /* eat :info */
|
|
token = lsptok(NULL, &length); /* get :info */
|
|
local_node->info = strtoul(token, NULL, 10);
|
|
|
|
return local_node;
|
|
}
|
|
|
|
/* ----------------
|
|
* _readPathOrder
|
|
*
|
|
* PathOrder is part of Path and it's subclasses.
|
|
* ----------------
|
|
*/
|
|
static PathOrder *
|
|
_readPathOrder()
|
|
{
|
|
PathOrder *local_node;
|
|
char *token;
|
|
int length;
|
|
|
|
local_node = makeNode(PathOrder);
|
|
|
|
token = lsptok(NULL, &length); /* get :ordtype */
|
|
token = lsptok(NULL, &length); /* now read it */
|
|
local_node->ordtype = atol(token);
|
|
|
|
if (local_node->ordtype == SORTOP_ORDER)
|
|
{
|
|
token = lsptok(NULL, &length); /* get :sortop */
|
|
|
|
if (length == 0)
|
|
local_node->ord.sortop = NULL;
|
|
else
|
|
{
|
|
int i = -1;
|
|
|
|
local_node->ord.sortop = palloc(sizeof(Oid) * (INDEX_MAX_KEYS + 1));
|
|
|
|
do
|
|
{
|
|
i++;
|
|
Assert(i <= INDEX_MAX_KEYS);
|
|
token = lsptok(NULL, &length); /* now read it */
|
|
local_node->ord.sortop[i] = strtoul(token, NULL, 10);
|
|
} while (local_node->ord.sortop[i] != 0);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
token = lsptok(NULL, &length); /* get :merge */
|
|
local_node->ord.merge = nodeRead(true); /* now read it */
|
|
}
|
|
|
|
return local_node;
|
|
}
|
|
|
|
/* ----------------
|
|
* _readPath
|
|
*
|
|
* Path is a subclass of Node.
|
|
* ----------------
|
|
*/
|
|
static Path *
|
|
_readPath()
|
|
{
|
|
Path *local_node;
|
|
char *token;
|
|
int length;
|
|
|
|
local_node = makeNode(Path);
|
|
|
|
token = lsptok(NULL, &length); /* get :pathtype */
|
|
token = lsptok(NULL, &length); /* now read it */
|
|
local_node->pathtype = atol(token);
|
|
|
|
token = lsptok(NULL, &length); /* get :cost */
|
|
token = lsptok(NULL, &length); /* now read it */
|
|
local_node->path_cost = (Cost) atof(token);
|
|
|
|
token = lsptok(NULL, &length); /* get :pathorder */
|
|
local_node->pathorder = nodeRead(true); /* now read it */
|
|
|
|
token = lsptok(NULL, &length); /* get :pathkeys */
|
|
local_node->pathkeys = nodeRead(true); /* now read it */
|
|
|
|
return local_node;
|
|
}
|
|
|
|
/* ----------------
|
|
* _readIndexPath
|
|
*
|
|
* IndexPath is a subclass of Path.
|
|
* ----------------
|
|
*/
|
|
static IndexPath *
|
|
_readIndexPath()
|
|
{
|
|
IndexPath *local_node;
|
|
char *token;
|
|
int length;
|
|
|
|
local_node = makeNode(IndexPath);
|
|
|
|
token = lsptok(NULL, &length); /* get :pathtype */
|
|
token = lsptok(NULL, &length); /* now read it */
|
|
local_node->path.pathtype = atol(token);
|
|
|
|
token = lsptok(NULL, &length); /* get :cost */
|
|
token = lsptok(NULL, &length); /* now read it */
|
|
local_node->path.path_cost = (Cost) atof(token);
|
|
|
|
token = lsptok(NULL, &length); /* get :pathorder */
|
|
local_node->path.pathorder = nodeRead(true); /* now read it */
|
|
|
|
token = lsptok(NULL, &length); /* get :pathkeys */
|
|
local_node->path.pathkeys = nodeRead(true); /* now read it */
|
|
|
|
token = lsptok(NULL, &length); /* get :indexid */
|
|
local_node->indexid = toIntList(nodeRead(true));
|
|
|
|
token = lsptok(NULL, &length); /* get :indexqual */
|
|
local_node->indexqual = nodeRead(true); /* now read it */
|
|
|
|
return local_node;
|
|
}
|
|
|
|
/* ----------------
|
|
* _readNestPath
|
|
*
|
|
* NestPath is a subclass of Path
|
|
* ----------------
|
|
*/
|
|
static NestPath *
|
|
_readNestPath()
|
|
{
|
|
NestPath *local_node;
|
|
char *token;
|
|
int length;
|
|
|
|
|
|
local_node = makeNode(NestPath);
|
|
|
|
token = lsptok(NULL, &length); /* get :pathtype */
|
|
token = lsptok(NULL, &length); /* now read it */
|
|
local_node->path.pathtype = atol(token);
|
|
|
|
token = lsptok(NULL, &length); /* get :cost */
|
|
token = lsptok(NULL, &length); /* now read it */
|
|
local_node->path.path_cost = (Cost) atof(token);
|
|
|
|
token = lsptok(NULL, &length); /* get :pathorder */
|
|
local_node->path.pathorder = nodeRead(true); /* now read it */
|
|
|
|
token = lsptok(NULL, &length); /* get :pathkeys */
|
|
local_node->path.pathkeys = nodeRead(true); /* now read it */
|
|
|
|
token = lsptok(NULL, &length); /* get :pathinfo */
|
|
local_node->pathinfo = nodeRead(true); /* now read it */
|
|
|
|
/*
|
|
* Not sure if these are nodes; they're declared as "struct path *".
|
|
* For now, i'll just print the addresses.
|
|
*
|
|
* GJK: Since I am parsing this stuff, I'll just ignore the addresses,
|
|
* and initialize these pointers to NULL.
|
|
*/
|
|
|
|
token = lsptok(NULL, &length); /* get :outerjoinpath */
|
|
token = lsptok(NULL, &length); /* get @ */
|
|
token = lsptok(NULL, &length); /* now read it */
|
|
|
|
local_node->outerjoinpath = NULL;
|
|
|
|
token = lsptok(NULL, &length); /* get :innerjoinpath */
|
|
token = lsptok(NULL, &length); /* get @ */
|
|
token = lsptok(NULL, &length); /* now read it */
|
|
|
|
local_node->innerjoinpath = NULL;
|
|
|
|
token = lsptok(NULL, &length); /* get :outerjoincost */
|
|
token = lsptok(NULL, &length); /* now read it */
|
|
|
|
local_node->path.outerjoincost = (Cost) atof(token);
|
|
|
|
token = lsptok(NULL, &length); /* get :joinid */
|
|
local_node->path.joinid = toIntList(nodeRead(true)); /* now read it */
|
|
|
|
return local_node;
|
|
}
|
|
|
|
/* ----------------
|
|
* _readMergePath
|
|
*
|
|
* MergePath is a subclass of NestPath.
|
|
* ----------------
|
|
*/
|
|
static MergePath *
|
|
_readMergePath()
|
|
{
|
|
MergePath *local_node;
|
|
char *token;
|
|
int length;
|
|
|
|
local_node = makeNode(MergePath);
|
|
|
|
token = lsptok(NULL, &length); /* get :pathtype */
|
|
token = lsptok(NULL, &length); /* now read it */
|
|
|
|
local_node->jpath.path.pathtype = atol(token);
|
|
|
|
token = lsptok(NULL, &length); /* get :cost */
|
|
token = lsptok(NULL, &length); /* now read it */
|
|
|
|
local_node->jpath.path.path_cost = (Cost) atof(token);
|
|
|
|
token = lsptok(NULL, &length); /* get :pathorder */
|
|
local_node->jpath.path.pathorder = nodeRead(true); /* now read it */
|
|
|
|
token = lsptok(NULL, &length); /* get :pathkeys */
|
|
local_node->jpath.path.pathkeys = nodeRead(true); /* now read it */
|
|
|
|
token = lsptok(NULL, &length); /* get :pathinfo */
|
|
local_node->jpath.pathinfo = nodeRead(true); /* now read it */
|
|
|
|
/*
|
|
* Not sure if these are nodes; they're declared as "struct path *".
|
|
* For now, i'll just print the addresses.
|
|
*
|
|
* GJK: Since I am parsing this stuff, I'll just ignore the addresses,
|
|
* and initialize these pointers to NULL.
|
|
*/
|
|
|
|
token = lsptok(NULL, &length); /* get :outerjoinpath */
|
|
token = lsptok(NULL, &length); /* get @ */
|
|
token = lsptok(NULL, &length); /* now read it */
|
|
|
|
local_node->jpath.outerjoinpath = NULL;
|
|
|
|
token = lsptok(NULL, &length); /* get :innerjoinpath */
|
|
token = lsptok(NULL, &length); /* get @ */
|
|
token = lsptok(NULL, &length); /* now read it */
|
|
|
|
local_node->jpath.innerjoinpath = NULL;
|
|
|
|
token = lsptok(NULL, &length); /* get :outerjoincost */
|
|
token = lsptok(NULL, &length); /* now read it */
|
|
|
|
local_node->jpath.path.outerjoincost = (Cost) atof(token);
|
|
|
|
token = lsptok(NULL, &length); /* get :joinid */
|
|
local_node->jpath.path.joinid = toIntList(nodeRead(true)); /* now read it */
|
|
|
|
token = lsptok(NULL, &length); /* get :path_mergeclauses */
|
|
local_node->path_mergeclauses = nodeRead(true); /* now read it */
|
|
|
|
token = lsptok(NULL, &length); /* get :outersortkeys */
|
|
local_node->outersortkeys = nodeRead(true); /* now read it */
|
|
|
|
token = lsptok(NULL, &length); /* get :innersortkeys */
|
|
local_node->innersortkeys = nodeRead(true); /* now read it */
|
|
|
|
return local_node;
|
|
}
|
|
|
|
/* ----------------
|
|
* _readHashPath
|
|
*
|
|
* HashPath is a subclass of NestPath.
|
|
* ----------------
|
|
*/
|
|
static HashPath *
|
|
_readHashPath()
|
|
{
|
|
HashPath *local_node;
|
|
char *token;
|
|
int length;
|
|
|
|
local_node = makeNode(HashPath);
|
|
|
|
token = lsptok(NULL, &length); /* get :pathtype */
|
|
token = lsptok(NULL, &length); /* now read it */
|
|
|
|
local_node->jpath.path.pathtype = atol(token);
|
|
|
|
token = lsptok(NULL, &length); /* get :cost */
|
|
token = lsptok(NULL, &length); /* now read it */
|
|
|
|
local_node->jpath.path.path_cost = (Cost) atof(token);
|
|
|
|
token = lsptok(NULL, &length); /* get :pathorder */
|
|
local_node->jpath.path.pathorder = nodeRead(true); /* now read it */
|
|
|
|
token = lsptok(NULL, &length); /* get :pathkeys */
|
|
local_node->jpath.path.pathkeys = nodeRead(true); /* now read it */
|
|
|
|
token = lsptok(NULL, &length); /* get :pathinfo */
|
|
local_node->jpath.pathinfo = nodeRead(true); /* now read it */
|
|
|
|
/*
|
|
* Not sure if these are nodes; they're declared as "struct path *".
|
|
* For now, i'll just print the addresses.
|
|
*
|
|
* GJK: Since I am parsing this stuff, I'll just ignore the addresses,
|
|
* and initialize these pointers to NULL.
|
|
*/
|
|
|
|
token = lsptok(NULL, &length); /* get :outerjoinpath */
|
|
token = lsptok(NULL, &length); /* get @ */
|
|
token = lsptok(NULL, &length); /* now read it */
|
|
|
|
local_node->jpath.outerjoinpath = NULL;
|
|
|
|
token = lsptok(NULL, &length); /* get :innerjoinpath */
|
|
token = lsptok(NULL, &length); /* get @ */
|
|
token = lsptok(NULL, &length); /* now read it */
|
|
|
|
local_node->jpath.innerjoinpath = NULL;
|
|
|
|
token = lsptok(NULL, &length); /* get :outerjoincost */
|
|
token = lsptok(NULL, &length); /* now read it */
|
|
|
|
local_node->jpath.path.outerjoincost = (Cost) atof(token);
|
|
|
|
token = lsptok(NULL, &length); /* get :joinid */
|
|
local_node->jpath.path.joinid = toIntList(nodeRead(true)); /* now read it */
|
|
|
|
token = lsptok(NULL, &length); /* get :path_hashclauses */
|
|
local_node->path_hashclauses = nodeRead(true); /* now read it */
|
|
|
|
token = lsptok(NULL, &length); /* get :outerhashkeys */
|
|
local_node->outerhashkeys = nodeRead(true); /* now read it */
|
|
|
|
token = lsptok(NULL, &length); /* get :innerhashkeys */
|
|
local_node->innerhashkeys = nodeRead(true); /* now read it */
|
|
|
|
return local_node;
|
|
}
|
|
|
|
/* ----------------
|
|
* _readOrderKey
|
|
*
|
|
* OrderKey is a subclass of Node.
|
|
* ----------------
|
|
*/
|
|
static OrderKey *
|
|
_readOrderKey()
|
|
{
|
|
OrderKey *local_node;
|
|
char *token;
|
|
int length;
|
|
|
|
local_node = makeNode(OrderKey);
|
|
|
|
token = lsptok(NULL, &length); /* get :attribute_number */
|
|
token = lsptok(NULL, &length); /* now read it */
|
|
|
|
local_node->attribute_number = atoi(token);
|
|
|
|
token = lsptok(NULL, &length); /* get :array_index */
|
|
token = lsptok(NULL, &length); /* now read it */
|
|
|
|
local_node->array_index = strtoul(token, NULL, 10);
|
|
|
|
return local_node;
|
|
}
|
|
|
|
/* ----------------
|
|
* _readJoinKey
|
|
*
|
|
* JoinKey is a subclass of Node.
|
|
* ----------------
|
|
*/
|
|
static JoinKey *
|
|
_readJoinKey()
|
|
{
|
|
JoinKey *local_node;
|
|
char *token;
|
|
int length;
|
|
|
|
local_node = makeNode(JoinKey);
|
|
|
|
token = lsptok(NULL, &length); /* get :outer */
|
|
local_node->outer = nodeRead(true); /* now read it */
|
|
|
|
token = lsptok(NULL, &length); /* get :inner */
|
|
local_node->inner = nodeRead(true); /* now read it */
|
|
|
|
return local_node;
|
|
}
|
|
|
|
/* ----------------
|
|
* _readMergeOrder
|
|
*
|
|
* MergeOrder is a subclass of Node.
|
|
* ----------------
|
|
*/
|
|
static MergeOrder *
|
|
_readMergeOrder()
|
|
{
|
|
MergeOrder *local_node;
|
|
char *token;
|
|
int length;
|
|
|
|
local_node = makeNode(MergeOrder);
|
|
token = lsptok(NULL, &length); /* get :join_operator */
|
|
token = lsptok(NULL, &length); /* now read it */
|
|
|
|
local_node->join_operator = atol(token);
|
|
|
|
token = lsptok(NULL, &length); /* get :left_operator */
|
|
token = lsptok(NULL, &length); /* now read it */
|
|
|
|
local_node->left_operator = atol(token);
|
|
|
|
token = lsptok(NULL, &length); /* get :right_operator */
|
|
token = lsptok(NULL, &length); /* now read it */
|
|
|
|
local_node->right_operator = atol(token);
|
|
|
|
token = lsptok(NULL, &length); /* get :left_type */
|
|
token = lsptok(NULL, &length); /* now read it */
|
|
|
|
local_node->left_type = atol(token);
|
|
|
|
token = lsptok(NULL, &length); /* get :right_type */
|
|
token = lsptok(NULL, &length); /* now read it */
|
|
|
|
local_node->right_type = atol(token);
|
|
|
|
return local_node;
|
|
}
|
|
|
|
/* ----------------
|
|
* _readRestrictInfo
|
|
*
|
|
* RestrictInfo is a subclass of Node.
|
|
* ----------------
|
|
*/
|
|
static RestrictInfo *
|
|
_readRestrictInfo()
|
|
{
|
|
RestrictInfo *local_node;
|
|
char *token;
|
|
int length;
|
|
|
|
local_node = makeNode(RestrictInfo);
|
|
|
|
token = lsptok(NULL, &length); /* get :clause */
|
|
local_node->clause = nodeRead(true); /* now read it */
|
|
|
|
token = lsptok(NULL, &length); /* get :selectivity */
|
|
token = lsptok(NULL, &length); /* now read it */
|
|
|
|
local_node->selectivity = atof(token);
|
|
|
|
token = lsptok(NULL, &length); /* get :notclause */
|
|
token = lsptok(NULL, &length); /* now read it */
|
|
|
|
if (!strncmp(token, "true", 4))
|
|
local_node->notclause = true;
|
|
else
|
|
local_node->notclause = false;
|
|
|
|
token = lsptok(NULL, &length); /* get :indexids */
|
|
local_node->indexids = nodeRead(true); /* now read it */
|
|
|
|
token = lsptok(NULL, &length); /* get :mergejoinorder */
|
|
local_node->mergejoinorder = (MergeOrder *) nodeRead(true);
|
|
|
|
token = lsptok(NULL, &length); /* get :hashjoinoperator */
|
|
token = lsptok(NULL, &length); /* now read it */
|
|
|
|
local_node->hashjoinoperator = atol(token);
|
|
|
|
return local_node;
|
|
}
|
|
|
|
/* ----------------
|
|
* _readJoinMethod
|
|
*
|
|
* JoinMethod is a subclass of Node.
|
|
* ----------------
|
|
*/
|
|
static JoinMethod *
|
|
_readJoinMethod()
|
|
{
|
|
JoinMethod *local_node;
|
|
char *token;
|
|
int length;
|
|
|
|
local_node = makeNode(JoinMethod);
|
|
|
|
token = lsptok(NULL, &length); /* get :jmkeys */
|
|
local_node->jmkeys = nodeRead(true); /* now read it */
|
|
|
|
token = lsptok(NULL, &length); /* get :clauses */
|
|
local_node->clauses = nodeRead(true); /* now read it */
|
|
|
|
return local_node;
|
|
}
|
|
|
|
/* ----------------
|
|
* _readHashInfo
|
|
*
|
|
* HashInfo is a subclass of JoinMethod.
|
|
* ----------------
|
|
*/
|
|
static HashInfo *
|
|
_readHashInfo()
|
|
{
|
|
HashInfo *local_node;
|
|
char *token;
|
|
int length;
|
|
|
|
local_node = makeNode(HashInfo);
|
|
|
|
token = lsptok(NULL, &length); /* get :hashop */
|
|
token = lsptok(NULL, &length); /* now read it */
|
|
|
|
local_node->hashop = strtoul(token, NULL, 10);
|
|
|
|
token = lsptok(NULL, &length); /* get :jmkeys */
|
|
local_node->jmethod.jmkeys = nodeRead(true); /* now read it */
|
|
|
|
token = lsptok(NULL, &length); /* get :clauses */
|
|
local_node->jmethod.clauses = nodeRead(true); /* now read it */
|
|
|
|
return local_node;
|
|
}
|
|
|
|
/* ----------------
|
|
* _readJoinInfo()
|
|
*
|
|
* JoinInfo is a subclass of Node.
|
|
* ----------------
|
|
*/
|
|
static JoinInfo *
|
|
_readJoinInfo()
|
|
{
|
|
JoinInfo *local_node;
|
|
char *token;
|
|
int length;
|
|
|
|
local_node = makeNode(JoinInfo);
|
|
|
|
token = lsptok(NULL, &length); /* get :unjoined_relids */
|
|
local_node->unjoined_relids = toIntList(nodeRead(true)); /* now read it */
|
|
|
|
token = lsptok(NULL, &length); /* get :jinfo_restrictinfo */
|
|
local_node->jinfo_restrictinfo = nodeRead(true); /* now read it */
|
|
|
|
token = lsptok(NULL, &length); /* get :mergejoinable */
|
|
|
|
if (!strncmp(token, "true", 4))
|
|
local_node->mergejoinable = true;
|
|
else
|
|
local_node->mergejoinable = false;
|
|
|
|
token = lsptok(NULL, &length); /* get :hashjoinable */
|
|
|
|
if (!strncmp(token, "true", 4))
|
|
local_node->hashjoinable = true;
|
|
else
|
|
local_node->hashjoinable = false;
|
|
|
|
return local_node;
|
|
}
|
|
|
|
/* ----------------
|
|
* _readIter()
|
|
*
|
|
* ----------------
|
|
*/
|
|
static Iter *
|
|
_readIter()
|
|
{
|
|
Iter *local_node;
|
|
char *token;
|
|
int length;
|
|
|
|
local_node = makeNode(Iter);
|
|
|
|
token = lsptok(NULL, &length); /* eat :iterexpr */
|
|
local_node->iterexpr = nodeRead(true); /* now read it */
|
|
|
|
return local_node;
|
|
}
|
|
|
|
|
|
/* ----------------
|
|
* parsePlanString
|
|
*
|
|
* Given a character string containing a plan, parsePlanString sets up the
|
|
* plan structure representing that plan.
|
|
*
|
|
* The string passed to parsePlanString must be null-terminated.
|
|
* ----------------
|
|
*/
|
|
Node *
|
|
parsePlanString(void)
|
|
{
|
|
char *token;
|
|
int length;
|
|
void *return_value = NULL;
|
|
|
|
token = lsptok(NULL, &length);
|
|
|
|
if (!strncmp(token, "PLAN", length))
|
|
return_value = _readPlan();
|
|
else if (!strncmp(token, "RESULT", length))
|
|
return_value = _readResult();
|
|
else if (!strncmp(token, "APPEND", length))
|
|
return_value = _readAppend();
|
|
else if (!strncmp(token, "JOIN", length))
|
|
return_value = _readJoin();
|
|
else if (!strncmp(token, "NESTLOOP", length))
|
|
return_value = _readNestLoop();
|
|
else if (!strncmp(token, "MERGEJOIN", length))
|
|
return_value = _readMergeJoin();
|
|
else if (!strncmp(token, "HASHJOIN", length))
|
|
return_value = _readHashJoin();
|
|
else if (!strncmp(token, "SCAN", length))
|
|
return_value = _readScan();
|
|
else if (!strncmp(token, "SEQSCAN", length))
|
|
return_value = _readSeqScan();
|
|
else if (!strncmp(token, "INDEXSCAN", length))
|
|
return_value = _readIndexScan();
|
|
else if (!strncmp(token, "NONAME", length))
|
|
return_value = _readNoname();
|
|
else if (!strncmp(token, "SORT", length))
|
|
return_value = _readSort();
|
|
else if (!strncmp(token, "AGGREG", length))
|
|
return_value = _readAggref();
|
|
else if (!strncmp(token, "SUBLINK", length))
|
|
return_value = _readSubLink();
|
|
else if (!strncmp(token, "AGG", length))
|
|
return_value = _readAgg();
|
|
else if (!strncmp(token, "UNIQUE", length))
|
|
return_value = _readUnique();
|
|
else if (!strncmp(token, "HASH", length))
|
|
return_value = _readHash();
|
|
else if (!strncmp(token, "RESDOM", length))
|
|
return_value = _readResdom();
|
|
else if (!strncmp(token, "EXPR", length))
|
|
return_value = _readExpr();
|
|
else if (!strncmp(token, "ARRAYREF", length))
|
|
return_value = _readArrayRef();
|
|
else if (!strncmp(token, "ARRAY", length))
|
|
return_value = _readArray();
|
|
else if (!strncmp(token, "VAR", length))
|
|
return_value = _readVar();
|
|
else if (!strncmp(token, "CONST", length))
|
|
return_value = _readConst();
|
|
else if (!strncmp(token, "FUNC", length))
|
|
return_value = _readFunc();
|
|
else if (!strncmp(token, "OPER", length))
|
|
return_value = _readOper();
|
|
else if (!strncmp(token, "PARAM", length))
|
|
return_value = _readParam();
|
|
else if (!strncmp(token, "ESTATE", length))
|
|
return_value = _readEState();
|
|
else if (!strncmp(token, "RELOPTINFO", length))
|
|
return_value = _readRelOptInfo();
|
|
else if (!strncmp(token, "TARGETENTRY", length))
|
|
return_value = _readTargetEntry();
|
|
else if (!strncmp(token, "RTE", length))
|
|
return_value = _readRangeTblEntry();
|
|
else if (!strncmp(token, "PATHORDER", length))
|
|
return_value = _readPathOrder();
|
|
else if (!strncmp(token, "PATH", length))
|
|
return_value = _readPath();
|
|
else if (!strncmp(token, "INDEXPATH", length))
|
|
return_value = _readIndexPath();
|
|
else if (!strncmp(token, "NESTPATH", length))
|
|
return_value = _readNestPath();
|
|
else if (!strncmp(token, "MERGEPATH", length))
|
|
return_value = _readMergePath();
|
|
else if (!strncmp(token, "HASHPATH", length))
|
|
return_value = _readHashPath();
|
|
else if (!strncmp(token, "ORDERKEY", length))
|
|
return_value = _readOrderKey();
|
|
else if (!strncmp(token, "JOINKEY", length))
|
|
return_value = _readJoinKey();
|
|
else if (!strncmp(token, "MERGEORDER", length))
|
|
return_value = _readMergeOrder();
|
|
else if (!strncmp(token, "RETRICTINFO", length))
|
|
return_value = _readRestrictInfo();
|
|
else if (!strncmp(token, "JOINMETHOD", length))
|
|
return_value = _readJoinMethod();
|
|
else if (!strncmp(token, "JOININFO", length))
|
|
return_value = _readJoinInfo();
|
|
else if (!strncmp(token, "HASHINFO", length))
|
|
return_value = _readHashInfo();
|
|
else if (!strncmp(token, "ITER", length))
|
|
return_value = _readIter();
|
|
else if (!strncmp(token, "QUERY", length))
|
|
return_value = _readQuery();
|
|
else if (!strncmp(token, "SORTCLAUSE", length))
|
|
return_value = _readSortClause();
|
|
else if (!strncmp(token, "GROUPCLAUSE", length))
|
|
return_value = _readGroupClause();
|
|
else if (!strncmp(token, "CASE", length))
|
|
return_value = _readCaseExpr();
|
|
else if (!strncmp(token, "WHEN", length))
|
|
return_value = _readCaseWhen();
|
|
else if (!strncmp(token, "ROWMARK", length))
|
|
return_value = _readRowMark();
|
|
else
|
|
elog(ERROR, "badly formatted planstring \"%.10s\"...\n", token);
|
|
|
|
return (Node *) return_value;
|
|
}
|
|
|
|
/*------------------------------------------------------------*/
|
|
|
|
/* ----------------
|
|
* readDatum
|
|
*
|
|
* given a string representation of the value of the given type,
|
|
* create the appropriate Datum
|
|
* ----------------
|
|
*/
|
|
static Datum
|
|
readDatum(Oid type)
|
|
{
|
|
int length;
|
|
int tokenLength;
|
|
char *token;
|
|
bool byValue;
|
|
Datum res;
|
|
char *s;
|
|
int i;
|
|
|
|
byValue = get_typbyval(type);
|
|
|
|
/*
|
|
* read the actual length of the value
|
|
*/
|
|
token = lsptok(NULL, &tokenLength);
|
|
length = atoi(token);
|
|
token = lsptok(NULL, &tokenLength); /* skip the '[' */
|
|
|
|
if (byValue)
|
|
{
|
|
if (length > sizeof(Datum))
|
|
elog(ERROR, "readValue: byval & length = %d", length);
|
|
s = (char *) (&res);
|
|
for (i = 0; i < sizeof(Datum); i++)
|
|
{
|
|
token = lsptok(NULL, &tokenLength);
|
|
s[i] = (char) atoi(token);
|
|
}
|
|
}
|
|
else if (length <= 0)
|
|
s = NULL;
|
|
else if (length >= 1)
|
|
{
|
|
s = (char *) palloc(length);
|
|
Assert(s != NULL);
|
|
for (i = 0; i < length; i++)
|
|
{
|
|
token = lsptok(NULL, &tokenLength);
|
|
s[i] = (char) atoi(token);
|
|
}
|
|
res = PointerGetDatum(s);
|
|
}
|
|
|
|
token = lsptok(NULL, &tokenLength); /* skip the ']' */
|
|
if (token[0] != ']')
|
|
elog(ERROR, "readValue: ']' expected, length =%d", length);
|
|
|
|
return res;
|
|
}
|