Tom Lane b9527e9840 First phase of plan-invalidation project: create a plan cache management
module and teach PREPARE and protocol-level prepared statements to use it.
In service of this, rearrange utility-statement processing so that parse
analysis does not assume table schemas can't change before execution for
utility statements (necessary because we don't attempt to re-acquire locks
for utility statements when reusing a stored plan).  This requires some
refactoring of the ProcessUtility API, but it ends up cleaner anyway,
for instance we can get rid of the QueryContext global.

Still to do: fix up SPI and related code to use the plan cache; I'm tempted to
try to make SQL functions use it too.  Also, there are at least some aspects
of system state that we want to ensure remain the same during a replan as in
the original processing; search_path certainly ought to behave that way for
instance, and perhaps there are others.
2007-03-13 00:33:44 +00:00

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C

/*-------------------------------------------------------------------------
*
* analyze.h
*
*
* Portions Copyright (c) 1996-2007, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/parser/analyze.h,v 1.36 2007/03/13 00:33:43 tgl Exp $
*
*-------------------------------------------------------------------------
*/
#ifndef ANALYZE_H
#define ANALYZE_H
#include "parser/parse_node.h"
extern List *parse_analyze(Node *parseTree, const char *sourceText,
Oid *paramTypes, int numParams);
extern List *parse_analyze_varparams(Node *parseTree, const char *sourceText,
Oid **paramTypes, int *numParams);
extern List *parse_sub_analyze(Node *parseTree, ParseState *parentParseState);
extern IndexStmt *analyzeIndexStmt(IndexStmt *stmt, const char *queryString);
extern void analyzeRuleStmt(RuleStmt *stmt, const char *queryString,
List **actions, Node **whereClause);
extern List *analyzeCreateSchemaStmt(CreateSchemaStmt *stmt);
extern void CheckSelectLocking(Query *qry);
extern void applyLockingClause(Query *qry, Index rtindex,
bool forUpdate, bool noWait);
#endif /* ANALYZE_H */