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cpython/Modules/_sqlite/connection.c
Erlend Egeberg Aasland 890e22957d
bpo-42064: Migrate to sqlite3_create_collation_v2 (GH-27156) 
This implies that SQLite now takes care of destroying the callback
context (the PyObject callable it has been passed), so we can strip the
collation dict from the connection object.
2021-07-27 15:54:20 +02:00

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/* connection.c - the connection type
*
* Copyright (C) 2004-2010 Gerhard Häring <gh@ghaering.de>
*
* This file is part of pysqlite.
*
* This software is provided 'as-is', without any express or implied
* warranty. In no event will the authors be held liable for any damages
* arising from the use of this software.
*
* Permission is granted to anyone to use this software for any purpose,
* including commercial applications, and to alter it and redistribute it
* freely, subject to the following restrictions:
*
* 1. The origin of this software must not be misrepresented; you must not
* claim that you wrote the original software. If you use this software
* in a product, an acknowledgment in the product documentation would be
* appreciated but is not required.
* 2. Altered source versions must be plainly marked as such, and must not be
* misrepresented as being the original software.
* 3. This notice may not be removed or altered from any source distribution.
*/
#include "module.h"
#include "structmember.h" // PyMemberDef
#include "connection.h"
#include "statement.h"
#include "cursor.h"
#include "prepare_protocol.h"
#include "util.h"
#define ACTION_FINALIZE 1
#define ACTION_RESET 2
#if SQLITE_VERSION_NUMBER >= 3014000
#define HAVE_TRACE_V2
#endif
#define clinic_state() (pysqlite_get_state(NULL))
#include "clinic/connection.c.h"
#undef clinic_state
/*[clinic input]
module _sqlite3
class _sqlite3.Connection "pysqlite_Connection *" "clinic_state()->ConnectionType"
[clinic start generated code]*/
/*[clinic end generated code: output=da39a3ee5e6b4b0d input=67369db2faf80891]*/
_Py_IDENTIFIER(cursor);
static const char * const begin_statements[] = {
"BEGIN ",
"BEGIN DEFERRED",
"BEGIN IMMEDIATE",
"BEGIN EXCLUSIVE",
NULL
};
static int pysqlite_connection_set_isolation_level(pysqlite_Connection* self, PyObject* isolation_level, void *Py_UNUSED(ignored));
static void _pysqlite_drop_unused_cursor_references(pysqlite_Connection* self);
static PyObject *
new_statement_cache(pysqlite_Connection *self, int maxsize)
{
PyObject *args[] = { PyLong_FromLong(maxsize), };
if (args[0] == NULL) {
return NULL;
}
pysqlite_state *state = pysqlite_get_state(NULL);
PyObject *inner = PyObject_Vectorcall(state->lru_cache, args, 1, NULL);
Py_DECREF(args[0]);
if (inner == NULL) {
return NULL;
}
args[0] = (PyObject *)self; // Borrowed ref.
PyObject *res = PyObject_Vectorcall(inner, args, 1, NULL);
Py_DECREF(inner);
return res;
}
/*[clinic input]
_sqlite3.Connection.__init__ as pysqlite_connection_init
database as database_obj: object(converter='PyUnicode_FSConverter')
timeout: double = 5.0
detect_types: int = 0
isolation_level: object = NULL
check_same_thread: bool(accept={int}) = True
factory: object(c_default='(PyObject*)clinic_state()->ConnectionType') = ConnectionType
cached_statements: int = 128
uri: bool = False
[clinic start generated code]*/
static int
pysqlite_connection_init_impl(pysqlite_Connection *self,
PyObject *database_obj, double timeout,
int detect_types, PyObject *isolation_level,
int check_same_thread, PyObject *factory,
int cached_statements, int uri)
/*[clinic end generated code: output=dc19df1c0e2b7b77 input=aa1f21bf12fe907a]*/
{
int rc;
if (PySys_Audit("sqlite3.connect", "O", database_obj) < 0) {
return -1;
}
const char *database = PyBytes_AsString(database_obj);
self->initialized = 1;
self->begin_statement = NULL;
Py_CLEAR(self->statement_cache);
Py_CLEAR(self->statements);
Py_CLEAR(self->cursors);
Py_INCREF(Py_None);
Py_XSETREF(self->row_factory, Py_None);
Py_INCREF(&PyUnicode_Type);
Py_XSETREF(self->text_factory, (PyObject*)&PyUnicode_Type);
Py_BEGIN_ALLOW_THREADS
rc = sqlite3_open_v2(database, &self->db,
SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE |
(uri ? SQLITE_OPEN_URI : 0), NULL);
Py_END_ALLOW_THREADS
Py_DECREF(database_obj); // needed bco. the AC FSConverter
if (rc != SQLITE_OK) {
_pysqlite_seterror(self->db);
return -1;
}
if (!isolation_level) {
isolation_level = PyUnicode_FromString("");
if (!isolation_level) {
return -1;
}
} else {
Py_INCREF(isolation_level);
}
Py_CLEAR(self->isolation_level);
if (pysqlite_connection_set_isolation_level(self, isolation_level, NULL) < 0) {
Py_DECREF(isolation_level);
return -1;
}
Py_DECREF(isolation_level);
self->statement_cache = new_statement_cache(self, cached_statements);
if (self->statement_cache == NULL) {
return -1;
}
if (PyErr_Occurred()) {
return -1;
}
self->created_statements = 0;
self->created_cursors = 0;
/* Create lists of weak references to statements/cursors */
self->statements = PyList_New(0);
self->cursors = PyList_New(0);
if (!self->statements || !self->cursors) {
return -1;
}
self->detect_types = detect_types;
(void)sqlite3_busy_timeout(self->db, (int)(timeout*1000));
self->thread_ident = PyThread_get_thread_ident();
self->check_same_thread = check_same_thread;
self->function_pinboard_trace_callback = NULL;
self->function_pinboard_progress_handler = NULL;
self->function_pinboard_authorizer_cb = NULL;
pysqlite_state *state = pysqlite_get_state(NULL);
self->Warning = state->Warning;
self->Error = state->Error;
self->InterfaceError = state->InterfaceError;
self->DatabaseError = state->DatabaseError;
self->DataError = state->DataError;
self->OperationalError = state->OperationalError;
self->IntegrityError = state->IntegrityError;
self->InternalError = state->InternalError;
self->ProgrammingError = state->ProgrammingError;
self->NotSupportedError = state->NotSupportedError;
if (PySys_Audit("sqlite3.connect/handle", "O", self) < 0) {
return -1;
}
return 0;
}
/* action in (ACTION_RESET, ACTION_FINALIZE) */
static void
pysqlite_do_all_statements(pysqlite_Connection *self, int action,
int reset_cursors)
{
int i;
PyObject* weakref;
PyObject* statement;
pysqlite_Cursor* cursor;
for (i = 0; i < PyList_Size(self->statements); i++) {
weakref = PyList_GetItem(self->statements, i);
statement = PyWeakref_GetObject(weakref);
if (statement != Py_None) {
Py_INCREF(statement);
if (action == ACTION_RESET) {
(void)pysqlite_statement_reset((pysqlite_Statement*)statement);
} else {
(void)pysqlite_statement_finalize((pysqlite_Statement*)statement);
}
Py_DECREF(statement);
}
}
if (reset_cursors) {
for (i = 0; i < PyList_Size(self->cursors); i++) {
weakref = PyList_GetItem(self->cursors, i);
cursor = (pysqlite_Cursor*)PyWeakref_GetObject(weakref);
if ((PyObject*)cursor != Py_None) {
cursor->reset = 1;
}
}
}
}
static int
connection_traverse(pysqlite_Connection *self, visitproc visit, void *arg)
{
Py_VISIT(Py_TYPE(self));
Py_VISIT(self->isolation_level);
Py_VISIT(self->statement_cache);
Py_VISIT(self->statements);
Py_VISIT(self->cursors);
Py_VISIT(self->row_factory);
Py_VISIT(self->text_factory);
Py_VISIT(self->function_pinboard_trace_callback);
Py_VISIT(self->function_pinboard_progress_handler);
Py_VISIT(self->function_pinboard_authorizer_cb);
return 0;
}
static int
connection_clear(pysqlite_Connection *self)
{
Py_CLEAR(self->isolation_level);
Py_CLEAR(self->statement_cache);
Py_CLEAR(self->statements);
Py_CLEAR(self->cursors);
Py_CLEAR(self->row_factory);
Py_CLEAR(self->text_factory);
Py_CLEAR(self->function_pinboard_trace_callback);
Py_CLEAR(self->function_pinboard_progress_handler);
Py_CLEAR(self->function_pinboard_authorizer_cb);
return 0;
}
static void
connection_close(pysqlite_Connection *self)
{
if (self->db) {
int rc = sqlite3_close_v2(self->db);
assert(rc == SQLITE_OK), (void)rc;
self->db = NULL;
}
}
static void
connection_dealloc(pysqlite_Connection *self)
{
PyTypeObject *tp = Py_TYPE(self);
PyObject_GC_UnTrack(self);
tp->tp_clear((PyObject *)self);
/* Clean up if user has not called .close() explicitly. */
connection_close(self);
tp->tp_free(self);
Py_DECREF(tp);
}
/*
* Registers a cursor with the connection.
*
* 0 => error; 1 => ok
*/
int pysqlite_connection_register_cursor(pysqlite_Connection* connection, PyObject* cursor)
{
PyObject* weakref;
weakref = PyWeakref_NewRef((PyObject*)cursor, NULL);
if (!weakref) {
goto error;
}
if (PyList_Append(connection->cursors, weakref) != 0) {
Py_CLEAR(weakref);
goto error;
}
Py_DECREF(weakref);
return 1;
error:
return 0;
}
/*[clinic input]
_sqlite3.Connection.cursor as pysqlite_connection_cursor
factory: object = NULL
Return a cursor for the connection.
[clinic start generated code]*/
static PyObject *
pysqlite_connection_cursor_impl(pysqlite_Connection *self, PyObject *factory)
/*[clinic end generated code: output=562432a9e6af2aa1 input=4127345aa091b650]*/
{
PyObject* cursor;
if (!pysqlite_check_thread(self) || !pysqlite_check_connection(self)) {
return NULL;
}
pysqlite_state *state = pysqlite_get_state(NULL);
if (factory == NULL) {
factory = (PyObject *)state->CursorType;
}
cursor = PyObject_CallOneArg(factory, (PyObject *)self);
if (cursor == NULL)
return NULL;
if (!PyObject_TypeCheck(cursor, state->CursorType)) {
PyErr_Format(PyExc_TypeError,
"factory must return a cursor, not %.100s",
Py_TYPE(cursor)->tp_name);
Py_DECREF(cursor);
return NULL;
}
_pysqlite_drop_unused_cursor_references(self);
if (cursor && self->row_factory != Py_None) {
Py_INCREF(self->row_factory);
Py_XSETREF(((pysqlite_Cursor *)cursor)->row_factory, self->row_factory);
}
return cursor;
}
/*[clinic input]
_sqlite3.Connection.close as pysqlite_connection_close
Closes the connection.
[clinic start generated code]*/
static PyObject *
pysqlite_connection_close_impl(pysqlite_Connection *self)
/*[clinic end generated code: output=a546a0da212c9b97 input=3d58064bbffaa3d3]*/
{
if (!pysqlite_check_thread(self)) {
return NULL;
}
pysqlite_do_all_statements(self, ACTION_FINALIZE, 1);
connection_close(self);
Py_RETURN_NONE;
}
/*
* Checks if a connection object is usable (i. e. not closed).
*
* 0 => error; 1 => ok
*/
int pysqlite_check_connection(pysqlite_Connection* con)
{
pysqlite_state *state = pysqlite_get_state(NULL);
if (!con->initialized) {
PyErr_SetString(state->ProgrammingError,
"Base Connection.__init__ not called.");
return 0;
}
if (!con->db) {
PyErr_SetString(state->ProgrammingError,
"Cannot operate on a closed database.");
return 0;
} else {
return 1;
}
}
/*[clinic input]
_sqlite3.Connection.commit as pysqlite_connection_commit
Commit the current transaction.
[clinic start generated code]*/
static PyObject *
pysqlite_connection_commit_impl(pysqlite_Connection *self)
/*[clinic end generated code: output=3da45579e89407f2 input=39c12c04dda276a8]*/
{
int rc;
sqlite3_stmt* statement;
if (!pysqlite_check_thread(self) || !pysqlite_check_connection(self)) {
return NULL;
}
if (!sqlite3_get_autocommit(self->db)) {
Py_BEGIN_ALLOW_THREADS
rc = sqlite3_prepare_v2(self->db, "COMMIT", 7, &statement, NULL);
Py_END_ALLOW_THREADS
if (rc != SQLITE_OK) {
_pysqlite_seterror(self->db);
goto error;
}
rc = pysqlite_step(statement);
if (rc != SQLITE_DONE) {
_pysqlite_seterror(self->db);
}
Py_BEGIN_ALLOW_THREADS
rc = sqlite3_finalize(statement);
Py_END_ALLOW_THREADS
if (rc != SQLITE_OK && !PyErr_Occurred()) {
_pysqlite_seterror(self->db);
}
}
error:
if (PyErr_Occurred()) {
return NULL;
} else {
Py_RETURN_NONE;
}
}
/*[clinic input]
_sqlite3.Connection.rollback as pysqlite_connection_rollback
Roll back the current transaction.
[clinic start generated code]*/
static PyObject *
pysqlite_connection_rollback_impl(pysqlite_Connection *self)
/*[clinic end generated code: output=b66fa0d43e7ef305 input=12d4e8d068942830]*/
{
int rc;
sqlite3_stmt* statement;
if (!pysqlite_check_thread(self) || !pysqlite_check_connection(self)) {
return NULL;
}
if (!sqlite3_get_autocommit(self->db)) {
pysqlite_do_all_statements(self, ACTION_RESET, 1);
Py_BEGIN_ALLOW_THREADS
rc = sqlite3_prepare_v2(self->db, "ROLLBACK", 9, &statement, NULL);
Py_END_ALLOW_THREADS
if (rc != SQLITE_OK) {
_pysqlite_seterror(self->db);
goto error;
}
rc = pysqlite_step(statement);
if (rc != SQLITE_DONE) {
_pysqlite_seterror(self->db);
}
Py_BEGIN_ALLOW_THREADS
rc = sqlite3_finalize(statement);
Py_END_ALLOW_THREADS
if (rc != SQLITE_OK && !PyErr_Occurred()) {
_pysqlite_seterror(self->db);
}
}
error:
if (PyErr_Occurred()) {
return NULL;
} else {
Py_RETURN_NONE;
}
}
static int
_pysqlite_set_result(sqlite3_context* context, PyObject* py_val)
{
if (py_val == Py_None) {
sqlite3_result_null(context);
} else if (PyLong_Check(py_val)) {
sqlite_int64 value = _pysqlite_long_as_int64(py_val);
if (value == -1 && PyErr_Occurred())
return -1;
sqlite3_result_int64(context, value);
} else if (PyFloat_Check(py_val)) {
sqlite3_result_double(context, PyFloat_AsDouble(py_val));
} else if (PyUnicode_Check(py_val)) {
const char *str = PyUnicode_AsUTF8(py_val);
if (str == NULL)
return -1;
sqlite3_result_text(context, str, -1, SQLITE_TRANSIENT);
} else if (PyObject_CheckBuffer(py_val)) {
Py_buffer view;
if (PyObject_GetBuffer(py_val, &view, PyBUF_SIMPLE) != 0) {
PyErr_SetString(PyExc_ValueError,
"could not convert BLOB to buffer");
return -1;
}
if (view.len > INT_MAX) {
PyErr_SetString(PyExc_OverflowError,
"BLOB longer than INT_MAX bytes");
PyBuffer_Release(&view);
return -1;
}
sqlite3_result_blob(context, view.buf, (int)view.len, SQLITE_TRANSIENT);
PyBuffer_Release(&view);
} else {
return -1;
}
return 0;
}
static PyObject *
_pysqlite_build_py_params(sqlite3_context *context, int argc,
sqlite3_value **argv)
{
PyObject* args;
int i;
sqlite3_value* cur_value;
PyObject* cur_py_value;
args = PyTuple_New(argc);
if (!args) {
return NULL;
}
for (i = 0; i < argc; i++) {
cur_value = argv[i];
switch (sqlite3_value_type(argv[i])) {
case SQLITE_INTEGER:
cur_py_value = PyLong_FromLongLong(sqlite3_value_int64(cur_value));
break;
case SQLITE_FLOAT:
cur_py_value = PyFloat_FromDouble(sqlite3_value_double(cur_value));
break;
case SQLITE_TEXT: {
sqlite3 *db = sqlite3_context_db_handle(context);
const char *text = (const char *)sqlite3_value_text(cur_value);
if (text == NULL && sqlite3_errcode(db) == SQLITE_NOMEM) {
PyErr_NoMemory();
goto error;
}
Py_ssize_t size = sqlite3_value_bytes(cur_value);
cur_py_value = PyUnicode_FromStringAndSize(text, size);
break;
}
case SQLITE_BLOB: {
sqlite3 *db = sqlite3_context_db_handle(context);
const void *blob = sqlite3_value_blob(cur_value);
if (blob == NULL && sqlite3_errcode(db) == SQLITE_NOMEM) {
PyErr_NoMemory();
goto error;
}
Py_ssize_t size = sqlite3_value_bytes(cur_value);
cur_py_value = PyBytes_FromStringAndSize(blob, size);
break;
}
case SQLITE_NULL:
default:
cur_py_value = Py_NewRef(Py_None);
}
if (!cur_py_value) {
goto error;
}
PyTuple_SET_ITEM(args, i, cur_py_value);
}
return args;
error:
Py_DECREF(args);
return NULL;
}
static void
_pysqlite_func_callback(sqlite3_context *context, int argc, sqlite3_value **argv)
{
PyObject* args;
PyObject* py_func;
PyObject* py_retval = NULL;
int ok;
PyGILState_STATE threadstate;
threadstate = PyGILState_Ensure();
py_func = (PyObject*)sqlite3_user_data(context);
args = _pysqlite_build_py_params(context, argc, argv);
if (args) {
py_retval = PyObject_CallObject(py_func, args);
Py_DECREF(args);
}
ok = 0;
if (py_retval) {
ok = _pysqlite_set_result(context, py_retval) == 0;
Py_DECREF(py_retval);
}
if (!ok) {
pysqlite_state *state = pysqlite_get_state(NULL);
if (state->enable_callback_tracebacks) {
PyErr_Print();
}
else {
PyErr_Clear();
}
sqlite3_result_error(context, "user-defined function raised exception", -1);
}
PyGILState_Release(threadstate);
}
static void _pysqlite_step_callback(sqlite3_context *context, int argc, sqlite3_value** params)
{
PyObject* args;
PyObject* function_result = NULL;
PyObject* aggregate_class;
PyObject** aggregate_instance;
PyObject* stepmethod = NULL;
PyGILState_STATE threadstate;
threadstate = PyGILState_Ensure();
aggregate_class = (PyObject*)sqlite3_user_data(context);
aggregate_instance = (PyObject**)sqlite3_aggregate_context(context, sizeof(PyObject*));
if (*aggregate_instance == NULL) {
*aggregate_instance = _PyObject_CallNoArg(aggregate_class);
if (PyErr_Occurred()) {
*aggregate_instance = 0;
pysqlite_state *state = pysqlite_get_state(NULL);
if (state->enable_callback_tracebacks) {
PyErr_Print();
}
else {
PyErr_Clear();
}
sqlite3_result_error(context, "user-defined aggregate's '__init__' method raised error", -1);
goto error;
}
}
stepmethod = PyObject_GetAttrString(*aggregate_instance, "step");
if (!stepmethod) {
goto error;
}
args = _pysqlite_build_py_params(context, argc, params);
if (!args) {
goto error;
}
function_result = PyObject_CallObject(stepmethod, args);
Py_DECREF(args);
if (!function_result) {
pysqlite_state *state = pysqlite_get_state(NULL);
if (state->enable_callback_tracebacks) {
PyErr_Print();
}
else {
PyErr_Clear();
}
sqlite3_result_error(context, "user-defined aggregate's 'step' method raised error", -1);
}
error:
Py_XDECREF(stepmethod);
Py_XDECREF(function_result);
PyGILState_Release(threadstate);
}
static void
_pysqlite_final_callback(sqlite3_context *context)
{
PyObject* function_result;
PyObject** aggregate_instance;
_Py_IDENTIFIER(finalize);
int ok;
PyObject *exception, *value, *tb;
PyGILState_STATE threadstate;
threadstate = PyGILState_Ensure();
aggregate_instance = (PyObject**)sqlite3_aggregate_context(context, 0);
if (aggregate_instance == NULL) {
/* No rows matched the query; the step handler was never called. */
goto error;
}
else if (!*aggregate_instance) {
/* this branch is executed if there was an exception in the aggregate's
* __init__ */
goto error;
}
/* Keep the exception (if any) of the last call to step() */
PyErr_Fetch(&exception, &value, &tb);
function_result = _PyObject_CallMethodIdNoArgs(*aggregate_instance, &PyId_finalize);
Py_DECREF(*aggregate_instance);
ok = 0;
if (function_result) {
ok = _pysqlite_set_result(context, function_result) == 0;
Py_DECREF(function_result);
}
if (!ok) {
pysqlite_state *state = pysqlite_get_state(NULL);
if (state->enable_callback_tracebacks) {
PyErr_Print();
}
else {
PyErr_Clear();
}
sqlite3_result_error(context, "user-defined aggregate's 'finalize' method raised error", -1);
}
/* Restore the exception (if any) of the last call to step(),
but clear also the current exception if finalize() failed */
PyErr_Restore(exception, value, tb);
error:
PyGILState_Release(threadstate);
}
static void _pysqlite_drop_unused_statement_references(pysqlite_Connection* self)
{
PyObject* new_list;
PyObject* weakref;
int i;
/* we only need to do this once in a while */
if (self->created_statements++ < 200) {
return;
}
self->created_statements = 0;
new_list = PyList_New(0);
if (!new_list) {
return;
}
for (i = 0; i < PyList_Size(self->statements); i++) {
weakref = PyList_GetItem(self->statements, i);
if (PyWeakref_GetObject(weakref) != Py_None) {
if (PyList_Append(new_list, weakref) != 0) {
Py_DECREF(new_list);
return;
}
}
}
Py_SETREF(self->statements, new_list);
}
static void _pysqlite_drop_unused_cursor_references(pysqlite_Connection* self)
{
PyObject* new_list;
PyObject* weakref;
int i;
/* we only need to do this once in a while */
if (self->created_cursors++ < 200) {
return;
}
self->created_cursors = 0;
new_list = PyList_New(0);
if (!new_list) {
return;
}
for (i = 0; i < PyList_Size(self->cursors); i++) {
weakref = PyList_GetItem(self->cursors, i);
if (PyWeakref_GetObject(weakref) != Py_None) {
if (PyList_Append(new_list, weakref) != 0) {
Py_DECREF(new_list);
return;
}
}
}
Py_SETREF(self->cursors, new_list);
}
static void _destructor(void* args)
{
// This function may be called without the GIL held, so we need to ensure
// that we destroy 'args' with the GIL
PyGILState_STATE gstate;
gstate = PyGILState_Ensure();
Py_DECREF((PyObject*)args);
PyGILState_Release(gstate);
}
/*[clinic input]
_sqlite3.Connection.create_function as pysqlite_connection_create_function
name: str
narg: int
func: object
*
deterministic: bool = False
Creates a new function. Non-standard.
[clinic start generated code]*/
static PyObject *
pysqlite_connection_create_function_impl(pysqlite_Connection *self,
const char *name, int narg,
PyObject *func, int deterministic)
/*[clinic end generated code: output=07d1877dd98c0308 input=f2edcf073e815beb]*/
{
int rc;
int flags = SQLITE_UTF8;
if (!pysqlite_check_thread(self) || !pysqlite_check_connection(self)) {
return NULL;
}
if (deterministic) {
#if SQLITE_VERSION_NUMBER < 3008003
PyErr_SetString(self->NotSupportedError,
"deterministic=True requires SQLite 3.8.3 or higher");
return NULL;
#else
if (sqlite3_libversion_number() < 3008003) {
PyErr_SetString(self->NotSupportedError,
"deterministic=True requires SQLite 3.8.3 or higher");
return NULL;
}
flags |= SQLITE_DETERMINISTIC;
#endif
}
rc = sqlite3_create_function_v2(self->db,
name,
narg,
flags,
(void*)Py_NewRef(func),
_pysqlite_func_callback,
NULL,
NULL,
&_destructor); // will decref func
if (rc != SQLITE_OK) {
/* Workaround for SQLite bug: no error code or string is available here */
PyErr_SetString(self->OperationalError, "Error creating function");
return NULL;
}
Py_RETURN_NONE;
}
/*[clinic input]
_sqlite3.Connection.create_aggregate as pysqlite_connection_create_aggregate
name: str
n_arg: int
aggregate_class: object
Creates a new aggregate. Non-standard.
[clinic start generated code]*/
static PyObject *
pysqlite_connection_create_aggregate_impl(pysqlite_Connection *self,
const char *name, int n_arg,
PyObject *aggregate_class)
/*[clinic end generated code: output=fbb2f858cfa4d8db input=c2e13bbf234500a5]*/
{
int rc;
if (!pysqlite_check_thread(self) || !pysqlite_check_connection(self)) {
return NULL;
}
rc = sqlite3_create_function_v2(self->db,
name,
n_arg,
SQLITE_UTF8,
(void*)Py_NewRef(aggregate_class),
0,
&_pysqlite_step_callback,
&_pysqlite_final_callback,
&_destructor); // will decref func
if (rc != SQLITE_OK) {
/* Workaround for SQLite bug: no error code or string is available here */
PyErr_SetString(self->OperationalError, "Error creating aggregate");
return NULL;
}
Py_RETURN_NONE;
}
static int _authorizer_callback(void* user_arg, int action, const char* arg1, const char* arg2 , const char* dbname, const char* access_attempt_source)
{
PyObject *ret;
int rc;
PyGILState_STATE gilstate;
gilstate = PyGILState_Ensure();
ret = PyObject_CallFunction((PyObject*)user_arg, "issss", action, arg1, arg2, dbname, access_attempt_source);
if (ret == NULL) {
pysqlite_state *state = pysqlite_get_state(NULL);
if (state->enable_callback_tracebacks) {
PyErr_Print();
}
else {
PyErr_Clear();
}
rc = SQLITE_DENY;
}
else {
if (PyLong_Check(ret)) {
rc = _PyLong_AsInt(ret);
if (rc == -1 && PyErr_Occurred()) {
pysqlite_state *state = pysqlite_get_state(NULL);
if (state->enable_callback_tracebacks) {
PyErr_Print();
}
else {
PyErr_Clear();
}
rc = SQLITE_DENY;
}
}
else {
rc = SQLITE_DENY;
}
Py_DECREF(ret);
}
PyGILState_Release(gilstate);
return rc;
}
static int _progress_handler(void* user_arg)
{
int rc;
PyObject *ret;
PyGILState_STATE gilstate;
gilstate = PyGILState_Ensure();
ret = _PyObject_CallNoArg((PyObject*)user_arg);
if (!ret) {
pysqlite_state *state = pysqlite_get_state(NULL);
if (state->enable_callback_tracebacks) {
PyErr_Print();
}
else {
PyErr_Clear();
}
/* abort query if error occurred */
rc = 1;
} else {
rc = (int)PyObject_IsTrue(ret);
Py_DECREF(ret);
}
PyGILState_Release(gilstate);
return rc;
}
#ifdef HAVE_TRACE_V2
/*
* From https://sqlite.org/c3ref/trace_v2.html:
* The integer return value from the callback is currently ignored, though this
* may change in future releases. Callback implementations should return zero
* to ensure future compatibility.
*/
static int _trace_callback(unsigned int type, void* user_arg, void* prepared_statement, void* statement_string)
#else
static void _trace_callback(void* user_arg, const char* statement_string)
#endif
{
PyObject *py_statement = NULL;
PyObject *ret = NULL;
PyGILState_STATE gilstate;
#ifdef HAVE_TRACE_V2
if (type != SQLITE_TRACE_STMT) {
return 0;
}
#endif
gilstate = PyGILState_Ensure();
py_statement = PyUnicode_DecodeUTF8(statement_string,
strlen(statement_string), "replace");
if (py_statement) {
ret = PyObject_CallOneArg((PyObject*)user_arg, py_statement);
Py_DECREF(py_statement);
}
if (ret) {
Py_DECREF(ret);
} else {
pysqlite_state *state = pysqlite_get_state(NULL);
if (state->enable_callback_tracebacks) {
PyErr_Print();
}
else {
PyErr_Clear();
}
}
PyGILState_Release(gilstate);
#ifdef HAVE_TRACE_V2
return 0;
#endif
}
/*[clinic input]
_sqlite3.Connection.set_authorizer as pysqlite_connection_set_authorizer
authorizer_callback as authorizer_cb: object
Sets authorizer callback. Non-standard.
[clinic start generated code]*/
static PyObject *
pysqlite_connection_set_authorizer_impl(pysqlite_Connection *self,
PyObject *authorizer_cb)
/*[clinic end generated code: output=f18ba575d788b35c input=df079724c020d2f2]*/
{
if (!pysqlite_check_thread(self) || !pysqlite_check_connection(self)) {
return NULL;
}
int rc;
if (authorizer_cb == Py_None) {
rc = sqlite3_set_authorizer(self->db, NULL, NULL);
Py_XSETREF(self->function_pinboard_authorizer_cb, NULL);
}
else {
Py_INCREF(authorizer_cb);
Py_XSETREF(self->function_pinboard_authorizer_cb, authorizer_cb);
rc = sqlite3_set_authorizer(self->db, _authorizer_callback, authorizer_cb);
}
if (rc != SQLITE_OK) {
PyErr_SetString(self->OperationalError,
"Error setting authorizer callback");
Py_XSETREF(self->function_pinboard_authorizer_cb, NULL);
return NULL;
}
Py_RETURN_NONE;
}
/*[clinic input]
_sqlite3.Connection.set_progress_handler as pysqlite_connection_set_progress_handler
progress_handler: object
n: int
Sets progress handler callback. Non-standard.
[clinic start generated code]*/
static PyObject *
pysqlite_connection_set_progress_handler_impl(pysqlite_Connection *self,
PyObject *progress_handler,
int n)
/*[clinic end generated code: output=35a7c10364cb1b04 input=857696c25f964c64]*/
{
if (!pysqlite_check_thread(self) || !pysqlite_check_connection(self)) {
return NULL;
}
if (progress_handler == Py_None) {
/* None clears the progress handler previously set */
sqlite3_progress_handler(self->db, 0, 0, (void*)0);
Py_XSETREF(self->function_pinboard_progress_handler, NULL);
} else {
sqlite3_progress_handler(self->db, n, _progress_handler, progress_handler);
Py_INCREF(progress_handler);
Py_XSETREF(self->function_pinboard_progress_handler, progress_handler);
}
Py_RETURN_NONE;
}
/*[clinic input]
_sqlite3.Connection.set_trace_callback as pysqlite_connection_set_trace_callback
trace_callback: object
Sets a trace callback called for each SQL statement (passed as unicode).
Non-standard.
[clinic start generated code]*/
static PyObject *
pysqlite_connection_set_trace_callback_impl(pysqlite_Connection *self,
PyObject *trace_callback)
/*[clinic end generated code: output=fb0e307b9924d454 input=56d60fd38d763679]*/
{
if (!pysqlite_check_thread(self) || !pysqlite_check_connection(self)) {
return NULL;
}
if (trace_callback == Py_None) {
/*
* None clears the trace callback previously set
*
* Ref.
* - https://sqlite.org/c3ref/c_trace.html
* - https://sqlite.org/c3ref/trace_v2.html
*/
#ifdef HAVE_TRACE_V2
sqlite3_trace_v2(self->db, SQLITE_TRACE_STMT, 0, 0);
#else
sqlite3_trace(self->db, 0, (void*)0);
#endif
Py_XSETREF(self->function_pinboard_trace_callback, NULL);
} else {
#ifdef HAVE_TRACE_V2
sqlite3_trace_v2(self->db, SQLITE_TRACE_STMT, _trace_callback, trace_callback);
#else
sqlite3_trace(self->db, _trace_callback, trace_callback);
#endif
Py_INCREF(trace_callback);
Py_XSETREF(self->function_pinboard_trace_callback, trace_callback);
}
Py_RETURN_NONE;
}
#ifndef SQLITE_OMIT_LOAD_EXTENSION
/*[clinic input]
_sqlite3.Connection.enable_load_extension as pysqlite_connection_enable_load_extension
enable as onoff: bool(accept={int})
/
Enable dynamic loading of SQLite extension modules. Non-standard.
[clinic start generated code]*/
static PyObject *
pysqlite_connection_enable_load_extension_impl(pysqlite_Connection *self,
int onoff)
/*[clinic end generated code: output=9cac37190d388baf input=5c0da5b121121cbc]*/
{
int rc;
if (PySys_Audit("sqlite3.enable_load_extension",
"OO", self, onoff ? Py_True : Py_False) < 0) {
return NULL;
}
if (!pysqlite_check_thread(self) || !pysqlite_check_connection(self)) {
return NULL;
}
rc = sqlite3_enable_load_extension(self->db, onoff);
if (rc != SQLITE_OK) {
PyErr_SetString(self->OperationalError,
"Error enabling load extension");
return NULL;
} else {
Py_RETURN_NONE;
}
}
/*[clinic input]
_sqlite3.Connection.load_extension as pysqlite_connection_load_extension
name as extension_name: str
/
Load SQLite extension module. Non-standard.
[clinic start generated code]*/
static PyObject *
pysqlite_connection_load_extension_impl(pysqlite_Connection *self,
const char *extension_name)
/*[clinic end generated code: output=47eb1d7312bc97a7 input=0b711574560db9fc]*/
{
int rc;
char* errmsg;
if (PySys_Audit("sqlite3.load_extension", "Os", self, extension_name) < 0) {
return NULL;
}
if (!pysqlite_check_thread(self) || !pysqlite_check_connection(self)) {
return NULL;
}
rc = sqlite3_load_extension(self->db, extension_name, 0, &errmsg);
if (rc != 0) {
PyErr_SetString(self->OperationalError, errmsg);
return NULL;
} else {
Py_RETURN_NONE;
}
}
#endif
int pysqlite_check_thread(pysqlite_Connection* self)
{
if (self->check_same_thread) {
if (PyThread_get_thread_ident() != self->thread_ident) {
PyErr_Format(self->ProgrammingError,
"SQLite objects created in a thread can only be used in that same thread. "
"The object was created in thread id %lu and this is thread id %lu.",
self->thread_ident, PyThread_get_thread_ident());
return 0;
}
}
return 1;
}
static PyObject* pysqlite_connection_get_isolation_level(pysqlite_Connection* self, void* unused)
{
return Py_NewRef(self->isolation_level);
}
static PyObject* pysqlite_connection_get_total_changes(pysqlite_Connection* self, void* unused)
{
if (!pysqlite_check_connection(self)) {
return NULL;
} else {
return Py_BuildValue("i", sqlite3_total_changes(self->db));
}
}
static PyObject* pysqlite_connection_get_in_transaction(pysqlite_Connection* self, void* unused)
{
if (!pysqlite_check_connection(self)) {
return NULL;
}
if (!sqlite3_get_autocommit(self->db)) {
Py_RETURN_TRUE;
}
Py_RETURN_FALSE;
}
static int
pysqlite_connection_set_isolation_level(pysqlite_Connection* self, PyObject* isolation_level, void *Py_UNUSED(ignored))
{
if (isolation_level == NULL) {
PyErr_SetString(PyExc_AttributeError, "cannot delete attribute");
return -1;
}
if (isolation_level == Py_None) {
PyObject *res = pysqlite_connection_commit(self, NULL);
if (!res) {
return -1;
}
Py_DECREF(res);
self->begin_statement = NULL;
} else {
const char * const *candidate;
PyObject *uppercase_level;
_Py_IDENTIFIER(upper);
if (!PyUnicode_Check(isolation_level)) {
PyErr_Format(PyExc_TypeError,
"isolation_level must be a string or None, not %.100s",
Py_TYPE(isolation_level)->tp_name);
return -1;
}
uppercase_level = _PyObject_CallMethodIdOneArg(
(PyObject *)&PyUnicode_Type, &PyId_upper,
isolation_level);
if (!uppercase_level) {
return -1;
}
for (candidate = begin_statements; *candidate; candidate++) {
if (_PyUnicode_EqualToASCIIString(uppercase_level, *candidate + 6))
break;
}
Py_DECREF(uppercase_level);
if (!*candidate) {
PyErr_SetString(PyExc_ValueError,
"invalid value for isolation_level");
return -1;
}
self->begin_statement = *candidate;
}
Py_INCREF(isolation_level);
Py_XSETREF(self->isolation_level, isolation_level);
return 0;
}
static PyObject *
pysqlite_connection_call(pysqlite_Connection *self, PyObject *args,
PyObject *kwargs)
{
PyObject* sql;
pysqlite_Statement* statement;
PyObject* weakref;
if (!pysqlite_check_thread(self) || !pysqlite_check_connection(self)) {
return NULL;
}
if (!_PyArg_NoKeywords(MODULE_NAME ".Connection", kwargs))
return NULL;
if (!PyArg_ParseTuple(args, "U", &sql))
return NULL;
_pysqlite_drop_unused_statement_references(self);
statement = pysqlite_statement_create(self, sql);
if (statement == NULL) {
return NULL;
}
weakref = PyWeakref_NewRef((PyObject*)statement, NULL);
if (weakref == NULL)
goto error;
if (PyList_Append(self->statements, weakref) != 0) {
Py_DECREF(weakref);
goto error;
}
Py_DECREF(weakref);
return (PyObject*)statement;
error:
Py_DECREF(statement);
return NULL;
}
/*[clinic input]
_sqlite3.Connection.execute as pysqlite_connection_execute
sql: unicode
parameters: object = NULL
/
Executes a SQL statement. Non-standard.
[clinic start generated code]*/
static PyObject *
pysqlite_connection_execute_impl(pysqlite_Connection *self, PyObject *sql,
PyObject *parameters)
/*[clinic end generated code: output=5be05ae01ee17ee4 input=fbd17c75c7140271]*/
{
_Py_IDENTIFIER(execute);
PyObject* cursor = 0;
PyObject* result = 0;
cursor = _PyObject_CallMethodIdNoArgs((PyObject*)self, &PyId_cursor);
if (!cursor) {
goto error;
}
result = _PyObject_CallMethodIdObjArgs(cursor, &PyId_execute, sql, parameters, NULL);
if (!result) {
Py_CLEAR(cursor);
}
error:
Py_XDECREF(result);
return cursor;
}
/*[clinic input]
_sqlite3.Connection.executemany as pysqlite_connection_executemany
sql: unicode
parameters: object
/
Repeatedly executes a SQL statement. Non-standard.
[clinic start generated code]*/
static PyObject *
pysqlite_connection_executemany_impl(pysqlite_Connection *self,
PyObject *sql, PyObject *parameters)
/*[clinic end generated code: output=776cd2fd20bfe71f input=4feab80659ffc82b]*/
{
_Py_IDENTIFIER(executemany);
PyObject* cursor = 0;
PyObject* result = 0;
cursor = _PyObject_CallMethodIdNoArgs((PyObject*)self, &PyId_cursor);
if (!cursor) {
goto error;
}
result = _PyObject_CallMethodIdObjArgs(cursor, &PyId_executemany, sql,
parameters, NULL);
if (!result) {
Py_CLEAR(cursor);
}
error:
Py_XDECREF(result);
return cursor;
}
/*[clinic input]
_sqlite3.Connection.executescript as pysqlite_connection_executescript
sql_script as script_obj: object
/
Executes multiple SQL statements at once. Non-standard.
[clinic start generated code]*/
static PyObject *
pysqlite_connection_executescript(pysqlite_Connection *self,
PyObject *script_obj)
/*[clinic end generated code: output=4c4f9d77aa0ae37d input=b27ae5c24ffb8b43]*/
{
_Py_IDENTIFIER(executescript);
PyObject* cursor = 0;
PyObject* result = 0;
cursor = _PyObject_CallMethodIdNoArgs((PyObject*)self, &PyId_cursor);
if (!cursor) {
goto error;
}
result = _PyObject_CallMethodIdObjArgs(cursor, &PyId_executescript,
script_obj, NULL);
if (!result) {
Py_CLEAR(cursor);
}
error:
Py_XDECREF(result);
return cursor;
}
/* ------------------------- COLLATION CODE ------------------------ */
static int
pysqlite_collation_callback(
void* context,
int text1_length, const void* text1_data,
int text2_length, const void* text2_data)
{
PyObject* callback = (PyObject*)context;
PyObject* string1 = 0;
PyObject* string2 = 0;
PyGILState_STATE gilstate;
PyObject* retval = NULL;
long longval;
int result = 0;
gilstate = PyGILState_Ensure();
if (PyErr_Occurred()) {
goto finally;
}
string1 = PyUnicode_FromStringAndSize((const char*)text1_data, text1_length);
string2 = PyUnicode_FromStringAndSize((const char*)text2_data, text2_length);
if (!string1 || !string2) {
goto finally; /* failed to allocate strings */
}
PyObject *args[] = { string1, string2 }; // Borrowed refs.
retval = PyObject_Vectorcall(callback, args, 2, NULL);
if (retval == NULL) {
/* execution failed */
goto finally;
}
longval = PyLong_AsLongAndOverflow(retval, &result);
if (longval == -1 && PyErr_Occurred()) {
PyErr_Clear();
result = 0;
}
else if (!result) {
if (longval > 0)
result = 1;
else if (longval < 0)
result = -1;
}
finally:
Py_XDECREF(string1);
Py_XDECREF(string2);
Py_XDECREF(retval);
PyGILState_Release(gilstate);
return result;
}
/*[clinic input]
_sqlite3.Connection.interrupt as pysqlite_connection_interrupt
Abort any pending database operation. Non-standard.
[clinic start generated code]*/
static PyObject *
pysqlite_connection_interrupt_impl(pysqlite_Connection *self)
/*[clinic end generated code: output=f193204bc9e70b47 input=4bd0ad083cf93aa7]*/
{
PyObject* retval = NULL;
if (!pysqlite_check_connection(self)) {
goto finally;
}
sqlite3_interrupt(self->db);
retval = Py_NewRef(Py_None);
finally:
return retval;
}
/* Function author: Paul Kippes <kippesp@gmail.com>
* Class method of Connection to call the Python function _iterdump
* of the sqlite3 module.
*/
/*[clinic input]
_sqlite3.Connection.iterdump as pysqlite_connection_iterdump
Returns iterator to the dump of the database in an SQL text format.
Non-standard.
[clinic start generated code]*/
static PyObject *
pysqlite_connection_iterdump_impl(pysqlite_Connection *self)
/*[clinic end generated code: output=586997aaf9808768 input=53bc907cb5eedb85]*/
{
_Py_IDENTIFIER(_iterdump);
PyObject* retval = NULL;
PyObject* module = NULL;
PyObject* module_dict;
PyObject* pyfn_iterdump;
if (!pysqlite_check_connection(self)) {
goto finally;
}
module = PyImport_ImportModule(MODULE_NAME ".dump");
if (!module) {
goto finally;
}
module_dict = PyModule_GetDict(module);
if (!module_dict) {
goto finally;
}
pyfn_iterdump = _PyDict_GetItemIdWithError(module_dict, &PyId__iterdump);
if (!pyfn_iterdump) {
if (!PyErr_Occurred()) {
PyErr_SetString(self->OperationalError,
"Failed to obtain _iterdump() reference");
}
goto finally;
}
retval = PyObject_CallOneArg(pyfn_iterdump, (PyObject *)self);
finally:
Py_XDECREF(module);
return retval;
}
/*[clinic input]
_sqlite3.Connection.backup as pysqlite_connection_backup
target: object(type='pysqlite_Connection *', subclass_of='clinic_state()->ConnectionType')
*
pages: int = -1
progress: object = None
name: str = "main"
sleep: double = 0.250
Makes a backup of the database. Non-standard.
[clinic start generated code]*/
static PyObject *
pysqlite_connection_backup_impl(pysqlite_Connection *self,
pysqlite_Connection *target, int pages,
PyObject *progress, const char *name,
double sleep)
/*[clinic end generated code: output=306a3e6a38c36334 input=c759627ab1ad46ff]*/
{
int rc;
int sleep_ms = (int)(sleep * 1000.0);
sqlite3 *bck_conn;
sqlite3_backup *bck_handle;
if (!pysqlite_check_thread(self) || !pysqlite_check_connection(self)) {
return NULL;
}
if (!pysqlite_check_connection(target)) {
return NULL;
}
if (target == self) {
PyErr_SetString(PyExc_ValueError, "target cannot be the same connection instance");
return NULL;
}
#if SQLITE_VERSION_NUMBER < 3008008
/* Since 3.8.8 this is already done, per commit
https://www.sqlite.org/src/info/169b5505498c0a7e */
if (!sqlite3_get_autocommit(target->db)) {
PyErr_SetString(self->OperationalError, "target is in transaction");
return NULL;
}
#endif
if (progress != Py_None && !PyCallable_Check(progress)) {
PyErr_SetString(PyExc_TypeError, "progress argument must be a callable");
return NULL;
}
if (pages == 0) {
pages = -1;
}
bck_conn = target->db;
Py_BEGIN_ALLOW_THREADS
bck_handle = sqlite3_backup_init(bck_conn, "main", self->db, name);
Py_END_ALLOW_THREADS
if (bck_handle == NULL) {
_pysqlite_seterror(bck_conn);
return NULL;
}
do {
Py_BEGIN_ALLOW_THREADS
rc = sqlite3_backup_step(bck_handle, pages);
Py_END_ALLOW_THREADS
if (progress != Py_None) {
int remaining = sqlite3_backup_remaining(bck_handle);
int pagecount = sqlite3_backup_pagecount(bck_handle);
PyObject *res = PyObject_CallFunction(progress, "iii", rc,
remaining, pagecount);
if (res == NULL) {
/* Callback failed: abort backup and bail. */
Py_BEGIN_ALLOW_THREADS
sqlite3_backup_finish(bck_handle);
Py_END_ALLOW_THREADS
return NULL;
}
Py_DECREF(res);
}
/* Sleep for a while if there are still further pages to copy and
the engine could not make any progress */
if (rc == SQLITE_BUSY || rc == SQLITE_LOCKED) {
Py_BEGIN_ALLOW_THREADS
sqlite3_sleep(sleep_ms);
Py_END_ALLOW_THREADS
}
} while (rc == SQLITE_OK || rc == SQLITE_BUSY || rc == SQLITE_LOCKED);
Py_BEGIN_ALLOW_THREADS
rc = sqlite3_backup_finish(bck_handle);
Py_END_ALLOW_THREADS
if (rc != SQLITE_OK) {
_pysqlite_seterror(bck_conn);
return NULL;
}
Py_RETURN_NONE;
}
/*[clinic input]
_sqlite3.Connection.create_collation as pysqlite_connection_create_collation
name: unicode
callback as callable: object
/
Creates a collation function. Non-standard.
[clinic start generated code]*/
static PyObject *
pysqlite_connection_create_collation_impl(pysqlite_Connection *self,
PyObject *name, PyObject *callable)
/*[clinic end generated code: output=0f63b8995565ae22 input=5c3898813a776cf2]*/
{
PyObject* uppercase_name = 0;
Py_ssize_t i, len;
_Py_IDENTIFIER(upper);
const char *uppercase_name_str;
int rc;
unsigned int kind;
const void *data;
if (!pysqlite_check_thread(self) || !pysqlite_check_connection(self)) {
goto finally;
}
uppercase_name = _PyObject_CallMethodIdOneArg((PyObject *)&PyUnicode_Type,
&PyId_upper, name);
if (!uppercase_name) {
goto finally;
}
if (PyUnicode_READY(uppercase_name))
goto finally;
len = PyUnicode_GET_LENGTH(uppercase_name);
kind = PyUnicode_KIND(uppercase_name);
data = PyUnicode_DATA(uppercase_name);
for (i=0; i<len; i++) {
Py_UCS4 ch = PyUnicode_READ(kind, data, i);
if ((ch >= '0' && ch <= '9')
|| (ch >= 'A' && ch <= 'Z')
|| (ch == '_'))
{
continue;
} else {
PyErr_SetString(self->ProgrammingError,
"invalid character in collation name");
goto finally;
}
}
uppercase_name_str = PyUnicode_AsUTF8(uppercase_name);
if (!uppercase_name_str)
goto finally;
int flags = SQLITE_UTF8;
if (callable == Py_None) {
rc = sqlite3_create_collation_v2(self->db, uppercase_name_str, flags,
NULL, NULL, NULL);
}
else {
if (!PyCallable_Check(callable)) {
PyErr_SetString(PyExc_TypeError, "parameter must be callable");
goto finally;
}
rc = sqlite3_create_collation_v2(self->db, uppercase_name_str, flags,
Py_NewRef(callable),
&pysqlite_collation_callback,
&_destructor);
}
if (rc != SQLITE_OK) {
/* Unlike other sqlite3_* functions, the destructor callback is _not_
* called if sqlite3_create_collation_v2() fails, so we have to free
* the context before returning.
*/
if (callable != Py_None) {
Py_DECREF(callable);
}
_pysqlite_seterror(self->db);
goto finally;
}
finally:
Py_XDECREF(uppercase_name);
if (PyErr_Occurred()) {
return NULL;
}
return Py_NewRef(Py_None);
}
/*[clinic input]
_sqlite3.Connection.__enter__ as pysqlite_connection_enter
Called when the connection is used as a context manager.
Returns itself as a convenience to the caller.
[clinic start generated code]*/
static PyObject *
pysqlite_connection_enter_impl(pysqlite_Connection *self)
/*[clinic end generated code: output=457b09726d3e9dcd input=127d7a4f17e86d8f]*/
{
if (!pysqlite_check_connection(self)) {
return NULL;
}
return Py_NewRef((PyObject *)self);
}
/*[clinic input]
_sqlite3.Connection.__exit__ as pysqlite_connection_exit
type as exc_type: object
value as exc_value: object
traceback as exc_tb: object
/
Called when the connection is used as a context manager.
If there was any exception, a rollback takes place; otherwise we commit.
[clinic start generated code]*/
static PyObject *
pysqlite_connection_exit_impl(pysqlite_Connection *self, PyObject *exc_type,
PyObject *exc_value, PyObject *exc_tb)
/*[clinic end generated code: output=0705200e9321202a input=bd66f1532c9c54a7]*/
{
const char* method_name;
PyObject* result;
if (exc_type == Py_None && exc_value == Py_None && exc_tb == Py_None) {
method_name = "commit";
} else {
method_name = "rollback";
}
result = PyObject_CallMethod((PyObject*)self, method_name, NULL);
if (!result) {
return NULL;
}
Py_DECREF(result);
Py_RETURN_FALSE;
}
static const char connection_doc[] =
PyDoc_STR("SQLite database connection object.");
static PyGetSetDef connection_getset[] = {
{"isolation_level", (getter)pysqlite_connection_get_isolation_level, (setter)pysqlite_connection_set_isolation_level},
{"total_changes", (getter)pysqlite_connection_get_total_changes, (setter)0},
{"in_transaction", (getter)pysqlite_connection_get_in_transaction, (setter)0},
{NULL}
};
static PyMethodDef connection_methods[] = {
PYSQLITE_CONNECTION_BACKUP_METHODDEF
PYSQLITE_CONNECTION_CLOSE_METHODDEF
PYSQLITE_CONNECTION_COMMIT_METHODDEF
PYSQLITE_CONNECTION_CREATE_AGGREGATE_METHODDEF
PYSQLITE_CONNECTION_CREATE_COLLATION_METHODDEF
PYSQLITE_CONNECTION_CREATE_FUNCTION_METHODDEF
PYSQLITE_CONNECTION_CURSOR_METHODDEF
PYSQLITE_CONNECTION_ENABLE_LOAD_EXTENSION_METHODDEF
PYSQLITE_CONNECTION_ENTER_METHODDEF
PYSQLITE_CONNECTION_EXECUTEMANY_METHODDEF
PYSQLITE_CONNECTION_EXECUTESCRIPT_METHODDEF
PYSQLITE_CONNECTION_EXECUTE_METHODDEF
PYSQLITE_CONNECTION_EXIT_METHODDEF
PYSQLITE_CONNECTION_INTERRUPT_METHODDEF
PYSQLITE_CONNECTION_ITERDUMP_METHODDEF
PYSQLITE_CONNECTION_LOAD_EXTENSION_METHODDEF
PYSQLITE_CONNECTION_ROLLBACK_METHODDEF
PYSQLITE_CONNECTION_SET_AUTHORIZER_METHODDEF
PYSQLITE_CONNECTION_SET_PROGRESS_HANDLER_METHODDEF
PYSQLITE_CONNECTION_SET_TRACE_CALLBACK_METHODDEF
{NULL, NULL}
};
static struct PyMemberDef connection_members[] =
{
{"Warning", T_OBJECT, offsetof(pysqlite_Connection, Warning), READONLY},
{"Error", T_OBJECT, offsetof(pysqlite_Connection, Error), READONLY},
{"InterfaceError", T_OBJECT, offsetof(pysqlite_Connection, InterfaceError), READONLY},
{"DatabaseError", T_OBJECT, offsetof(pysqlite_Connection, DatabaseError), READONLY},
{"DataError", T_OBJECT, offsetof(pysqlite_Connection, DataError), READONLY},
{"OperationalError", T_OBJECT, offsetof(pysqlite_Connection, OperationalError), READONLY},
{"IntegrityError", T_OBJECT, offsetof(pysqlite_Connection, IntegrityError), READONLY},
{"InternalError", T_OBJECT, offsetof(pysqlite_Connection, InternalError), READONLY},
{"ProgrammingError", T_OBJECT, offsetof(pysqlite_Connection, ProgrammingError), READONLY},
{"NotSupportedError", T_OBJECT, offsetof(pysqlite_Connection, NotSupportedError), READONLY},
{"row_factory", T_OBJECT, offsetof(pysqlite_Connection, row_factory)},
{"text_factory", T_OBJECT, offsetof(pysqlite_Connection, text_factory)},
{NULL}
};
static PyType_Slot connection_slots[] = {
{Py_tp_dealloc, connection_dealloc},
{Py_tp_doc, (void *)connection_doc},
{Py_tp_methods, connection_methods},
{Py_tp_members, connection_members},
{Py_tp_getset, connection_getset},
{Py_tp_init, pysqlite_connection_init},
{Py_tp_call, pysqlite_connection_call},
{Py_tp_traverse, connection_traverse},
{Py_tp_clear, connection_clear},
{0, NULL},
};
static PyType_Spec connection_spec = {
.name = MODULE_NAME ".Connection",
.basicsize = sizeof(pysqlite_Connection),
.flags = (Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE |
Py_TPFLAGS_HAVE_GC | Py_TPFLAGS_IMMUTABLETYPE),
.slots = connection_slots,
};
int
pysqlite_connection_setup_types(PyObject *module)
{
PyObject *type = PyType_FromModuleAndSpec(module, &connection_spec, NULL);
if (type == NULL) {
return -1;
}
pysqlite_state *state = pysqlite_get_state(module);
state->ConnectionType = (PyTypeObject *)type;
return 0;
}
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