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/* lobject.h - definition for the psycopg lobject type
*
* Copyright (C) 2006 Federico Di Gregorio <fog@debian.org>
*
* This file is part of psycopg.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2,
* or (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef PSYCOPG_LOBJECT_H
#define PSYCOPG_LOBJECT_H 1
#include <Python.h>
#include <libpq-fe.h>
#include <libpq/libpq-fs.h>
#include "psycopg/connection.h"
#ifdef __cplusplus
extern "C" {
#endif
extern PyTypeObject lobjectType;
typedef struct {
PyObject HEAD;
connectionObject *conn; /* connection owning the lobject */
int closed:1; /* 1 if the lobject is closed */
long int mark; /* copied from conn->mark */
Oid oid; /* the oid for this lobject */
int fd; /* the file descriptor for file-like ops */
} lobjectObject;
/* functions exported from lobject_int.c */
extern int lobject_open(lobjectObject *self, connectionObject *conn,
Oid oid, int mode, Oid new_oid, char *new_file);
/* exception-raising macros */
#define EXC_IF_LOBJ_CLOSED(self) \
if ((self)->closed || ((self)->conn && (self)->conn->closed)) { \
PyErr_SetString(InterfaceError, "lobject already closed"); \
return NULL; }
#define EXC_IF_LOBJ_LEVEL0(self) \
if (self->conn->isolation_level == 0) { \
psyco_set_error(ProgrammingError, (PyObject*)self, \
"can't use a lobject outside of transactions", NULL, NULL); \
return NULL; \
}
#define EXC_IF_LOBJ_UNMARKED(self) \
if (self->conn->mark != self->mark) { \
psyco_set_error(ProgrammingError, (PyObject*)self, \
"lobject isn't valid anymore", NULL, NULL); \
return NULL; \
}
#ifdef __cplusplus
}
#endif
#endif /* !defined(PSYCOPG_LOBJECT_H) */
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