database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-11-19 13:42:17 +03:00
Code Activity

Add an "events" system to libpq, whereby applications can get callbacks that

Browse Source 
enable them to manage private data associated with PGconns and PGresults.

Andrew Chernow and Merlin Moncure
This commit is contained in:
Tom Lane
2008-09-17 04:31:08 +00:00
parent b73c0c2a51
commit 32f159cc55
10 changed files with 1469 additions and 72 deletions
Download Patch File Download Diff File Expand all files Collapse all files

36
src/interfaces/libpq/libpq-fe.h
View File

@@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2008, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/interfaces/libpq/libpq-fe.h,v 1.142 2008/03/19 00:39:33 ishii Exp $
* $PostgreSQL: pgsql/src/interfaces/libpq/libpq-fe.h,v 1.143 2008/09/17 04:31:08 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -28,6 +28,14 @@ extern "C"
*/
#include "postgres_ext.h"
/*
* Option flags for PQcopyResult
*/
#define PG_COPYRES_ATTRS 0x01
#define PG_COPYRES_TUPLES 0x02 /* Implies PG_COPYRES_ATTRS */
#define PG_COPYRES_EVENTS 0x04
#define PG_COPYRES_NOTICEHOOKS 0x08
/* Application-visible enum types */
typedef enum
@@ -192,6 +200,21 @@ typedef struct
} u;
} PQArgBlock;
/* ----------------
* PGresAttDesc -- Data about a single attribute (column) of a query result
* ----------------
*/
typedef struct pgresAttDesc
{
char *name; /* column name */
Oid tableid; /* source table, if known */
int columnid; /* source column, if known */
int format; /* format code for value (text/binary) */
Oid typid; /* type id */
int typlen; /* type size */
int atttypmod; /* type-specific modifier info */
} PGresAttDesc;
/* ----------------
* Exported functions of libpq
* ----------------
@@ -430,13 +453,12 @@ extern void PQfreemem(void *ptr);
/* Note: depending on this is deprecated; use PQconnectionNeedsPassword(). */
#define PQnoPasswordSupplied "fe_sendauth: no password supplied\n"
/*
* Make an empty PGresult with given status (some apps find this
* useful). If conn is not NULL and status indicates an error, the
* conn's errorMessage is copied.
*/
/* Create and manipulate PGresults */
extern PGresult *PQmakeEmptyPGresult(PGconn *conn, ExecStatusType status);
extern PGresult *PQcopyResult(const PGresult *src, int flags);
extern int PQsetResultAttrs(PGresult *res, int numAttributes, PGresAttDesc *attDescs);
extern void *PQresultAlloc(PGresult *res, size_t nBytes);
extern int PQsetvalue(PGresult *res, int tup_num, int field_num, char *value, int len);
/* Quoting strings before inclusion in queries. */
extern size_t PQescapeStringConn(PGconn *conn,