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/* connection.h - definition for the psycopg connection type
*
* Copyright (C) 2003-2010 Federico Di Gregorio <fog@debian.org>
*
* This file is part of psycopg.
*
* psycopg2 is free software: you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* In addition, as a special exception, the copyright holders give
* permission to link this program with the OpenSSL library (or with
* modified versions of OpenSSL that use the same license as OpenSSL),
* and distribute linked combinations including the two.
*
* You must obey the GNU Lesser General Public License in all respects for
* all of the code used other than OpenSSL.
*
* psycopg2 is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*/
#ifndef PSYCOPG_CONNECTION_H
#define PSYCOPG_CONNECTION_H 1
#define PY_SSIZE_T_CLEAN
#include <Python.h>
#include <libpq-fe.h>
#include "psycopg/config.h"
#ifdef __cplusplus
extern "C" {
#endif
/* connection status */
#define CONN_STATUS_READY 1
#define CONN_STATUS_BEGIN 2
#define CONN_STATUS_SYNC 3
#define CONN_STATUS_ASYNC 4
/* Hard limit on the notices stored by the Python connection */
#define CONN_NOTICES_LIMIT 50
extern HIDDEN PyTypeObject connectionType;
struct connectionObject_notice {
struct connectionObject_notice *next;
const char *message;
};
typedef struct {
PyObject_HEAD
pthread_mutex_t lock; /* the global connection lock */
char *dsn; /* data source name */
char *critical; /* critical error on this connection */
char *encoding; /* current backend encoding */
long int closed; /* 1 means connection has been closed;
2 that something horrible happened */
long int isolation_level; /* isolation level for this connection */
long int mark; /* number of commits/rollbacks done so far */
int status; /* status of the connection */
int protocol; /* protocol version */
int server_version; /* server version */
PGconn *pgconn; /* the postgresql connection */
PyObject *async_cursor;
/* notice processing */
PyObject *notice_list;
PyObject *notice_filter;
struct connectionObject_notice *notice_pending;
/* notifies */
PyObject *notifies;
/* per-connection typecasters */
PyObject *string_types; /* a set of typecasters for string types */
PyObject *binary_types; /* a set of typecasters for binary types */
int equote; /* use E''-style quotes for escaped strings */
} connectionObject;
/* C-callable functions in connection_int.c and connection_ext.c */
HIDDEN void conn_notice_process(connectionObject *self);
HIDDEN void conn_notice_clean(connectionObject *self);
HIDDEN int conn_setup(connectionObject *self, PGconn *pgconn);
HIDDEN int conn_connect(connectionObject *self);
HIDDEN void conn_close(connectionObject *self);
HIDDEN int conn_commit(connectionObject *self);
HIDDEN int conn_rollback(connectionObject *self);
HIDDEN int conn_switch_isolation_level(connectionObject *self, int level);
HIDDEN int conn_set_client_encoding(connectionObject *self, const char *enc);
/* exception-raising macros */
#define EXC_IF_CONN_CLOSED(self) if ((self)->closed > 0) { \
PyErr_SetString(InterfaceError, "connection already closed"); \
return NULL; }
#ifdef __cplusplus
}
#endif
#endif /* !defined(PSYCOPG_CONNECTION_H) */
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