+++ /dev/null
-/* connection_type.c - python interface to connection objects
- *
- * Copyright (C) 2003 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.
- */
-
-#include <Python.h>
-#include <structmember.h>
-#include <stringobject.h>
-
-#include <string.h>
-
-#define PSYCOPG_MODULE
-#include "psycopg/config.h"
-#include "psycopg/python.h"
-#include "psycopg/psycopg.h"
-#include "psycopg/connection.h"
-#include "psycopg/cursor.h"
-
-/** DBAPI methods **/
-
-/* cursor method - allocate a new cursor */
-
-#define psyco_conn_cursor_doc \
-"cursor(cursor_factory=extensions.cursor) -- new cursor\n\n" \
-"Return a new cursor.\n\nThe ``cursor_factory`` argument can be used to\n" \
-"create non-standard cursors by passing a class different from the\n" \
-"default. Note that the new class *should* be a sub-class of\n" \
-"`extensions.cursor`.\n\n" \
-":rtype: `extensions.cursor`"
-
-static PyObject *
-psyco_conn_cursor(connectionObject *self, PyObject *args, PyObject *keywds)
-{
- char *name = NULL;
- PyObject *obj, *factory = NULL;
-
- static char *kwlist[] = {"name", "cursor_factory", NULL};
-
- if (!PyArg_ParseTupleAndKeywords(args, keywds, "|sO", kwlist,
- &name, &factory)) {
- return NULL;
- }
-
- EXC_IF_CONN_CLOSED(self);
-
- Dprintf("psyco_conn_cursor: new cursor for connection at %p", self);
- Dprintf("psyco_conn_cursor: parameters: name = %s", name);
-
- if (factory == NULL) factory = (PyObject *)&cursorType;
- if (name)
- obj = PyObject_CallFunction(factory, "Os", self, name);
- else
- obj = PyObject_CallFunction(factory, "O", self);
-
- if (obj == NULL) return NULL;
- if (PyObject_IsInstance(obj, (PyObject *)&cursorType) == 0) {
- PyErr_SetString(PyExc_TypeError,
- "cursor factory must be subclass of psycopg2._psycopg.cursor");
- Py_DECREF(obj);
- return NULL;
- }
-
- Dprintf("psyco_conn_cursor: new cursor at %p: refcnt = %d",
- obj, obj->ob_refcnt);
- return obj;
-}
-
-
-/* close method - close the connection and all related cursors */
-
-#define psyco_conn_close_doc "close() -- Close the connection."
-
-static PyObject *
-psyco_conn_close(connectionObject *self, PyObject *args)
-{
- EXC_IF_CONN_CLOSED(self);
-
- if (!PyArg_ParseTuple(args, "")) return NULL;
-
- Dprintf("psyco_conn_close: closing connection at %p", self);
- conn_close(self);
- Dprintf("psyco_conn_close: connection at %p closed", self);
-
- Py_INCREF(Py_None);
- return Py_None;
-}
-
-
-/* commit method - commit all changes to the database */
-
-#define psyco_conn_commit_doc "commit() -- Commit all changes to database."
-
-static PyObject *
-psyco_conn_commit(connectionObject *self, PyObject *args)
-{
- EXC_IF_CONN_CLOSED(self);
-
- if (!PyArg_ParseTuple(args, "")) return NULL;
-
- /* FIXME: check return status? */
- conn_commit(self);
-
- Py_INCREF(Py_None);
- return Py_None;
-}
-
-
-/* rollback method - roll back all changes done to the database */
-
-#define psyco_conn_rollback_doc \
-"rollback() -- Roll back all changes done to database."
-
-static PyObject *
-psyco_conn_rollback(connectionObject *self, PyObject *args)
-{
- EXC_IF_CONN_CLOSED(self);
-
- if (!PyArg_ParseTuple(args, "")) return NULL;
-
- /* FIXME: check return status? */
- conn_rollback(self);
-
- Py_INCREF(Py_None);
- return Py_None;
-}
-
-
-#ifdef PSYCOPG_EXTENSIONS
-/* set_isolation_level method - switch connection isolation level */
-
-#define psyco_conn_set_isolation_level_doc \
-"set_isolation_level(level) -- Switch isolation level to ``level``."
-
-static PyObject *
-psyco_conn_set_isolation_level(connectionObject *self, PyObject *args)
-{
- int level = 1;
-
- EXC_IF_CONN_CLOSED(self);
-
- if (!PyArg_ParseTuple(args, "i", &level)) return NULL;
-
- if (level < 0 || level > 2) {
- PyErr_SetString(PyExc_ValueError,
- "isolation level out of bounds (0,3)");
- return NULL;
- }
-
- /* FIXME: check return status? */
- conn_switch_isolation_level(self, level);
-
- Py_INCREF(Py_None);
- return Py_None;
-}
-
-\f
-
-/* set_isolation_level method - switch connection isolation level */
-
-#define psyco_conn_set_client_encoding_doc \
-"set_client_encoding(encoding) -- Set client encoding to ``encoding``."
-
-static PyObject *
-psyco_conn_set_client_encoding(connectionObject *self, PyObject *args)
-{
- char *enc = NULL;
-
- EXC_IF_CONN_CLOSED(self);
-
- if (!PyArg_ParseTuple(args, "s", &enc)) return NULL;
-
- if (conn_set_client_encoding(self, enc) == 0) {
- Py_INCREF(Py_None);
- return Py_None;
- }
- else {
- return NULL;
- }
-}
-#endif
-
-
-/** the connection object **/
-
-
-/* object method list */
-
-static struct PyMethodDef connectionObject_methods[] = {
- {"cursor", (PyCFunction)psyco_conn_cursor,
- METH_VARARGS|METH_KEYWORDS, psyco_conn_cursor_doc},
- {"close", (PyCFunction)psyco_conn_close,
- METH_VARARGS, psyco_conn_close_doc},
- {"commit", (PyCFunction)psyco_conn_commit,
- METH_VARARGS, psyco_conn_commit_doc},
- {"rollback", (PyCFunction)psyco_conn_rollback,
- METH_VARARGS, psyco_conn_rollback_doc},
-#ifdef PSYCOPG_EXTENSIONS
- {"set_isolation_level", (PyCFunction)psyco_conn_set_isolation_level,
- METH_VARARGS, psyco_conn_set_isolation_level_doc},
- {"set_client_encoding", (PyCFunction)psyco_conn_set_client_encoding,
- METH_VARARGS, psyco_conn_set_client_encoding_doc},
-#endif
- {NULL}
-};
-
-/* object member list */
-
-static struct PyMemberDef connectionObject_members[] = {
- /* DBAPI-2.0 extensions (exception objects) */
- {"Error", T_OBJECT,
- offsetof(connectionObject, exc_Error), RO, Error_doc},
- {"Warning",
- T_OBJECT, offsetof(connectionObject, exc_Warning), RO, Warning_doc},
- {"InterfaceError", T_OBJECT,
- offsetof(connectionObject, exc_InterfaceError), RO,
- InterfaceError_doc},
- {"DatabaseError", T_OBJECT,
- offsetof(connectionObject, exc_DatabaseError), RO, DatabaseError_doc},
- {"InternalError", T_OBJECT,
- offsetof(connectionObject, exc_InternalError), RO, InternalError_doc},
- {"OperationalError", T_OBJECT,
- offsetof(connectionObject, exc_OperationalError), RO,
- OperationalError_doc},
- {"ProgrammingError", T_OBJECT,
- offsetof(connectionObject, exc_ProgrammingError), RO,
- ProgrammingError_doc},
- {"IntegrityError", T_OBJECT,
- offsetof(connectionObject, exc_IntegrityError), RO,
- IntegrityError_doc},
- {"DataError", T_OBJECT,
- offsetof(connectionObject, exc_DataError), RO, DataError_doc},
- {"NotSupportedError", T_OBJECT,
- offsetof(connectionObject, exc_NotSupportedError), RO,
- NotSupportedError_doc},
-#ifdef PSYCOPG_EXTENSIONS
- {"closed", T_LONG, offsetof(connectionObject, closed), RO,
- "True if the connection is closed."},
- {"isolation_level", T_LONG,
- offsetof(connectionObject, isolation_level), RO,
- "The current isolation level."},
- {"encoding", T_STRING, offsetof(connectionObject, encoding), RO,
- "The current client encoding."},
- {"notices", T_OBJECT, offsetof(connectionObject, notice_list), RO},
- {"notifies", T_OBJECT, offsetof(connectionObject, notifies), RO},
- {"dsn", T_STRING, offsetof(connectionObject, dsn), RO,
- "The current connection string."},
- {"status", T_LONG,
- offsetof(connectionObject, status), RO,
- "The current transaction status."},
-#endif
- {NULL}
-};
-
-/* initialization and finalization methods */
-
-static int
-connection_setup(connectionObject *self, char *dsn)
-{
- Dprintf("connection_setup: init connection object at %p, refcnt = %d",
- self, ((PyObject *)self)->ob_refcnt);
-
- self->dsn = strdup(dsn);
- self->notice_list = PyList_New(0);
- self->notifies = PyList_New(0);
- self->closed = 0;
- self->status = CONN_STATUS_READY;
- self->critical = NULL;
- self->async_cursor = NULL;
- self->pgconn = NULL;
- self->mark = 0;
-
- pthread_mutex_init(&(self->lock), NULL);
-
- if (conn_connect(self) != 0) {
- pthread_mutex_destroy(&(self->lock));
- Dprintf("connection_init: FAILED");
- return -1;
- }
-
- Dprintf("connection_setup: good connection object at %p, refcnt = %d",
- self, ((PyObject *)self)->ob_refcnt);
- return 0;
-}
-
-static void
-connection_dealloc(PyObject* obj)
-{
- connectionObject *self = (connectionObject *)obj;
-
- if (self->closed == 0) conn_close(self);
-
- if (self->dsn) free(self->dsn);
- if (self->encoding) PyMem_Free(self->encoding);
- if (self->critical) free(self->critical);
-
- Py_XDECREF(self->notice_list);
- Py_XDECREF(self->notifies);
- Py_XDECREF(self->async_cursor);
-
- pthread_mutex_destroy(&(self->lock));
-
- Dprintf("connection_dealloc: deleted connection object at %p, refcnt = %d",
- obj, obj->ob_refcnt);
-
- obj->ob_type->tp_free(obj);
-}
-
-static int
-connection_init(PyObject *obj, PyObject *args, PyObject *kwds)
-{
- char *dsn;
-
- if (!PyArg_ParseTuple(args, "s", &dsn))
- return -1;
-
- return connection_setup((connectionObject *)obj, dsn);
-}
-
-static PyObject *
-connection_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
-{
- return type->tp_alloc(type, 0);
-}
-
-static void
-connection_del(PyObject* self)
-{
- PyObject_Del(self);
-}
-
-static PyObject *
-connection_repr(connectionObject *self)
-{
- return PyString_FromFormat(
- "<connection object at %p; dsn: '%s', closed: %ld>",
- self, self->dsn, self->closed);
-}
-
-
-/* object type */
-
-#define connectionType_doc \
-"connection(dsn, ...) -> new connection object\n\n" \
-":Groups:\n" \
-" * `DBAPI-2.0 errors`: Error, Warning, InterfaceError,\n" \
-" DatabaseError, InternalError, OperationalError,\n" \
-" ProgrammingError, IntegrityError, DataError, NotSupportedError"
-
-PyTypeObject connectionType = {
- PyObject_HEAD_INIT(NULL)
- 0,
- "psycopg2._psycopg.connection",
- sizeof(connectionObject),
- 0,
- connection_dealloc, /*tp_dealloc*/
- 0, /*tp_print*/
- 0, /*tp_getattr*/
- 0, /*tp_setattr*/
- 0, /*tp_compare*/
- (reprfunc)connection_repr, /*tp_repr*/
- 0, /*tp_as_number*/
- 0, /*tp_as_sequence*/
- 0, /*tp_as_mapping*/
- 0, /*tp_hash */
-
- 0, /*tp_call*/
- (reprfunc)connection_repr, /*tp_str*/
- 0, /*tp_getattro*/
- 0, /*tp_setattro*/
- 0, /*tp_as_buffer*/
-
- Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE, /*tp_flags*/
- connectionType_doc, /*tp_doc*/
-
- 0, /*tp_traverse*/
- 0, /*tp_clear*/
-
- 0, /*tp_richcompare*/
- 0, /*tp_weaklistoffset*/
-
- 0, /*tp_iter*/
- 0, /*tp_iternext*/
-
- /* Attribute descriptor and subclassing stuff */
-
- connectionObject_methods, /*tp_methods*/
- connectionObject_members, /*tp_members*/
- 0, /*tp_getset*/
- 0, /*tp_base*/
- 0, /*tp_dict*/
-
- 0, /*tp_descr_get*/
- 0, /*tp_descr_set*/
- 0, /*tp_dictoffset*/
-
- connection_init, /*tp_init*/
- 0, /*tp_alloc will be set to PyType_GenericAlloc in module init*/
- connection_new, /*tp_new*/
- (freefunc)connection_del, /*tp_free Low-level free-memory routine */
- 0, /*tp_is_gc For PyObject_IS_GC */
- 0, /*tp_bases*/
- 0, /*tp_mro method resolution order */
- 0, /*tp_cache*/
- 0, /*tp_subclasses*/
- 0 /*tp_weaklist*/
-};
git://git.onelab.eu / plcapi.git / blobdiff