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/*-------------------------------------------------------------------------
*
* postgres_fdw.h
* Foreign-data wrapper for remote PostgreSQL servers
*
* Portions Copyright (c) 2012-2013, PostgreSQL Global Development Group
*
* IDENTIFICATION
* contrib/postgres_fdw/postgres_fdw.h
*
*-------------------------------------------------------------------------
*/
#ifndef POSTGRES_FDW_H
#define POSTGRES_FDW_H
#include "foreign/foreign.h"
#include "lib/stringinfo.h"
#include "nodes/relation.h"
#include "utils/rel.h"
#include "libpq-fe.h"
/* in connection.c */
extern PGconn *GetConnection(ForeignServer *server, UserMapping *user);
extern void ReleaseConnection(PGconn *conn);
extern unsigned int GetCursorNumber(PGconn *conn);
extern void pgfdw_report_error(int elevel, PGresult *res, bool clear,
const char *sql);
/* in option.c */
extern int ExtractConnectionOptions(List *defelems,
const char **keywords,
const char **values);
/* in deparse.c */
extern void classifyConditions(PlannerInfo *root,
RelOptInfo *baserel,
List **remote_conds,
List **param_conds,
List **local_conds,
List **param_numbers);
extern void deparseSimpleSql(StringInfo buf,
PlannerInfo *root,
RelOptInfo *baserel,
List *local_conds);
extern void appendWhereClause(StringInfo buf,
bool has_where,
List *exprs,
PlannerInfo *root);
extern void deparseAnalyzeSql(StringInfo buf, Relation rel);
#endif /* POSTGRES_FDW_H */
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