PostgreSQL Source Code: contrib/postgres_fdw/postgres

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00001 /*-------------------------------------------------------------------------
00002  *
00003  * postgres_fdw.h
00004  *        Foreign-data wrapper for remote PostgreSQL servers
00005  *
00006  * Portions Copyright (c) 2012-2013, PostgreSQL Global Development Group
00007  *
00008  * IDENTIFICATION
00009  *        contrib/postgres_fdw/postgres_fdw.h
00010  *
00011  *-------------------------------------------------------------------------
00012  */
00013 #ifndef POSTGRES_FDW_H
00014 #define POSTGRES_FDW_H
00015 
00016 #include "foreign/foreign.h"
00017 #include "lib/stringinfo.h"
00018 #include "nodes/relation.h"
00019 #include "utils/rel.h"
00020 
00021 #include "libpq-fe.h"
00022 
00023 /* in postgres_fdw.c */
00024 extern int  set_transmission_modes(void);
00025 extern void reset_transmission_modes(int nestlevel);
00026 
00027 /* in connection.c */
00028 extern PGconn *GetConnection(ForeignServer *server, UserMapping *user,
00029               bool will_prep_stmt);
00030 extern void ReleaseConnection(PGconn *conn);
00031 extern unsigned int GetCursorNumber(PGconn *conn);
00032 extern unsigned int GetPrepStmtNumber(PGconn *conn);
00033 extern void pgfdw_report_error(int elevel, PGresult *res, bool clear,
00034                    const char *sql);
00035 
00036 /* in option.c */
00037 extern int ExtractConnectionOptions(List *defelems,
00038                          const char **keywords,
00039                          const char **values);
00040 
00041 /* in deparse.c */
00042 extern void classifyConditions(PlannerInfo *root,
00043                    RelOptInfo *baserel,
00044                    List **remote_conds,
00045                    List **local_conds);
00046 extern bool is_foreign_expr(PlannerInfo *root,
00047                 RelOptInfo *baserel,
00048                 Expr *expr);
00049 extern void deparseSelectSql(StringInfo buf,
00050                  PlannerInfo *root,
00051                  RelOptInfo *baserel,
00052                  Bitmapset *attrs_used,
00053                  List **retrieved_attrs);
00054 extern void appendWhereClause(StringInfo buf,
00055                   PlannerInfo *root,
00056                   RelOptInfo *baserel,
00057                   List *exprs,
00058                   bool is_first,
00059                   List **params);
00060 extern void deparseInsertSql(StringInfo buf, PlannerInfo *root,
00061                  Index rtindex, Relation rel,
00062                  List *targetAttrs, List *returningList,
00063                  List **retrieved_attrs);
00064 extern void deparseUpdateSql(StringInfo buf, PlannerInfo *root,
00065                  Index rtindex, Relation rel,
00066                  List *targetAttrs, List *returningList,
00067                  List **retrieved_attrs);
00068 extern void deparseDeleteSql(StringInfo buf, PlannerInfo *root,
00069                  Index rtindex, Relation rel,
00070                  List *returningList,
00071                  List **retrieved_attrs);
00072 extern void deparseAnalyzeSizeSql(StringInfo buf, Relation rel);
00073 extern void deparseAnalyzeSql(StringInfo buf, Relation rel,
00074                               List **retrieved_attrs);
00075 
00076 #endif   /* POSTGRES_FDW_H */
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postgres_fdw.h
