| /* 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 "cache.h" |
| #include "module.h" |
| #include "structmember.h" |
| #include "connection.h" |
| #include "statement.h" |
| #include "cursor.h" |
| #include "prepare_protocol.h" |
| #include "util.h" |
| |
| #include "pythread.h" |
| |
| #define ACTION_FINALIZE 1 |
| #define ACTION_RESET 2 |
| |
| #if SQLITE_VERSION_NUMBER >= 3003008 |
| #ifndef SQLITE_OMIT_LOAD_EXTENSION |
| #define HAVE_LOAD_EXTENSION |
| #endif |
| #endif |
| |
| _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); |
| static void _pysqlite_drop_unused_cursor_references(pysqlite_Connection* self); |
| |
| |
| static void _sqlite3_result_error(sqlite3_context* ctx, const char* errmsg, int len) |
| { |
| /* in older SQLite versions, calling sqlite3_result_error in callbacks |
| * triggers a bug in SQLite that leads either to irritating results or |
| * segfaults, depending on the SQLite version */ |
| #if SQLITE_VERSION_NUMBER >= 3003003 |
| sqlite3_result_error(ctx, errmsg, len); |
| #else |
| PyErr_SetString(pysqlite_OperationalError, errmsg); |
| #endif |
| } |
| |
| int pysqlite_connection_init(pysqlite_Connection* self, PyObject* args, PyObject* kwargs) |
| { |
| static char *kwlist[] = { |
| "database", "timeout", "detect_types", "isolation_level", |
| "check_same_thread", "factory", "cached_statements", "uri", |
| NULL |
| }; |
| |
| char* database; |
| int detect_types = 0; |
| PyObject* isolation_level = NULL; |
| PyObject* factory = NULL; |
| int check_same_thread = 1; |
| int cached_statements = 100; |
| int uri = 0; |
| double timeout = 5.0; |
| int rc; |
| |
| if (!PyArg_ParseTupleAndKeywords(args, kwargs, "s|diOiOip", kwlist, |
| &database, &timeout, &detect_types, |
| &isolation_level, &check_same_thread, |
| &factory, &cached_statements, &uri)) |
| { |
| return -1; |
| } |
| |
| self->initialized = 1; |
| |
| self->begin_statement = NULL; |
| |
| self->statement_cache = NULL; |
| self->statements = NULL; |
| self->cursors = NULL; |
| |
| Py_INCREF(Py_None); |
| self->row_factory = Py_None; |
| |
| Py_INCREF(&PyUnicode_Type); |
| self->text_factory = (PyObject*)&PyUnicode_Type; |
| |
| #ifdef SQLITE_OPEN_URI |
| Py_BEGIN_ALLOW_THREADS |
| rc = sqlite3_open_v2(database, &self->db, |
| SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE | |
| (uri ? SQLITE_OPEN_URI : 0), NULL); |
| #else |
| if (uri) { |
| PyErr_SetString(pysqlite_NotSupportedError, "URIs not supported"); |
| return -1; |
| } |
| Py_BEGIN_ALLOW_THREADS |
| rc = sqlite3_open(database, &self->db); |
| #endif |
| Py_END_ALLOW_THREADS |
| |
| if (rc != SQLITE_OK) { |
| _pysqlite_seterror(self->db, NULL); |
| return -1; |
| } |
| |
| if (!isolation_level) { |
| isolation_level = PyUnicode_FromString(""); |
| if (!isolation_level) { |
| return -1; |
| } |
| } else { |
| Py_INCREF(isolation_level); |
| } |
| self->isolation_level = NULL; |
| if (pysqlite_connection_set_isolation_level(self, isolation_level) < 0) { |
| Py_DECREF(isolation_level); |
| return -1; |
| } |
| Py_DECREF(isolation_level); |
| |
| self->statement_cache = (pysqlite_Cache*)PyObject_CallFunction((PyObject*)&pysqlite_CacheType, "Oi", self, cached_statements); |
| 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; |
| } |
| |
| /* By default, the Cache class INCREFs the factory in its initializer, and |
| * decrefs it in its deallocator method. Since this would create a circular |
| * reference here, we're breaking it by decrementing self, and telling the |
| * cache class to not decref the factory (self) in its deallocator. |
| */ |
| self->statement_cache->decref_factory = 0; |
| Py_DECREF(self); |
| |
| self->detect_types = detect_types; |
| self->timeout = timeout; |
| (void)sqlite3_busy_timeout(self->db, (int)(timeout*1000)); |
| #ifdef WITH_THREAD |
| self->thread_ident = PyThread_get_thread_ident(); |
| #endif |
| if (!check_same_thread && sqlite3_libversion_number() < 3003001) { |
| PyErr_SetString(pysqlite_NotSupportedError, "shared connections not available"); |
| return -1; |
| } |
| self->check_same_thread = check_same_thread; |
| |
| self->function_pinboard = PyDict_New(); |
| if (!self->function_pinboard) { |
| return -1; |
| } |
| |
| self->collations = PyDict_New(); |
| if (!self->collations) { |
| return -1; |
| } |
| |
| self->Warning = pysqlite_Warning; |
| self->Error = pysqlite_Error; |
| self->InterfaceError = pysqlite_InterfaceError; |
| self->DatabaseError = pysqlite_DatabaseError; |
| self->DataError = pysqlite_DataError; |
| self->OperationalError = pysqlite_OperationalError; |
| self->IntegrityError = pysqlite_IntegrityError; |
| self->InternalError = pysqlite_InternalError; |
| self->ProgrammingError = pysqlite_ProgrammingError; |
| self->NotSupportedError = pysqlite_NotSupportedError; |
| |
| return 0; |
| } |
| |
| /* action in (ACTION_RESET, ACTION_FINALIZE) */ |
| 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; |
| } |
| } |
| } |
| } |
| |
| void pysqlite_connection_dealloc(pysqlite_Connection* self) |
| { |
| Py_XDECREF(self->statement_cache); |
| |
| /* Clean up if user has not called .close() explicitly. */ |
| if (self->db) { |
| Py_BEGIN_ALLOW_THREADS |
| sqlite3_close(self->db); |
| Py_END_ALLOW_THREADS |
| } |
| |
| Py_XDECREF(self->isolation_level); |
| Py_XDECREF(self->function_pinboard); |
| Py_XDECREF(self->row_factory); |
| Py_XDECREF(self->text_factory); |
| Py_XDECREF(self->collations); |
| Py_XDECREF(self->statements); |
| Py_XDECREF(self->cursors); |
| |
| Py_TYPE(self)->tp_free((PyObject*)self); |
| } |
| |
| /* |
| * 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; |
| } |
| |
| PyObject* pysqlite_connection_cursor(pysqlite_Connection* self, PyObject* args, PyObject* kwargs) |
| { |
| static char *kwlist[] = {"factory", NULL}; |
| PyObject* factory = NULL; |
| PyObject* cursor; |
| |
| if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|O", kwlist, |
| &factory)) { |
| return NULL; |
| } |
| |
| if (!pysqlite_check_thread(self) || !pysqlite_check_connection(self)) { |
| return NULL; |
| } |
| |
| if (factory == NULL) { |
| factory = (PyObject*)&pysqlite_CursorType; |
| } |
| |
| cursor = PyObject_CallFunctionObjArgs(factory, (PyObject *)self, NULL); |
| if (cursor == NULL) |
| return NULL; |
| if (!PyObject_TypeCheck(cursor, &pysqlite_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; |
| } |
| |
| PyObject* pysqlite_connection_close(pysqlite_Connection* self, PyObject* args) |
| { |
| int rc; |
| |
| if (!pysqlite_check_thread(self)) { |
| return NULL; |
| } |
| |
| pysqlite_do_all_statements(self, ACTION_FINALIZE, 1); |
| |
| if (self->db) { |
| Py_BEGIN_ALLOW_THREADS |
| rc = sqlite3_close(self->db); |
| Py_END_ALLOW_THREADS |
| |
| if (rc != SQLITE_OK) { |
| _pysqlite_seterror(self->db, NULL); |
| return NULL; |
| } else { |
| self->db = NULL; |
| } |
| } |
| |
| 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) |
| { |
| if (!con->initialized) { |
| PyErr_SetString(pysqlite_ProgrammingError, "Base Connection.__init__ not called."); |
| return 0; |
| } |
| |
| if (!con->db) { |
| PyErr_SetString(pysqlite_ProgrammingError, "Cannot operate on a closed database."); |
| return 0; |
| } else { |
| return 1; |
| } |
| } |
| |
| PyObject* _pysqlite_connection_begin(pysqlite_Connection* self) |
| { |
| int rc; |
| const char* tail; |
| sqlite3_stmt* statement; |
| |
| Py_BEGIN_ALLOW_THREADS |
| rc = sqlite3_prepare(self->db, self->begin_statement, -1, &statement, &tail); |
| Py_END_ALLOW_THREADS |
| |
| if (rc != SQLITE_OK) { |
| _pysqlite_seterror(self->db, statement); |
| goto error; |
| } |
| |
| rc = pysqlite_step(statement, self); |
| if (rc != SQLITE_DONE) { |
| _pysqlite_seterror(self->db, statement); |
| } |
| |
| Py_BEGIN_ALLOW_THREADS |
| rc = sqlite3_finalize(statement); |
| Py_END_ALLOW_THREADS |
| |
| if (rc != SQLITE_OK && !PyErr_Occurred()) { |
| _pysqlite_seterror(self->db, NULL); |
| } |
| |
| error: |
| if (PyErr_Occurred()) { |
| return NULL; |
| } else { |
| Py_INCREF(Py_None); |
| return Py_None; |
| } |
| } |
| |
| PyObject* pysqlite_connection_commit(pysqlite_Connection* self, PyObject* args) |
| { |
| int rc; |
| const char* tail; |
| 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(self->db, "COMMIT", -1, &statement, &tail); |
| Py_END_ALLOW_THREADS |
| if (rc != SQLITE_OK) { |
| _pysqlite_seterror(self->db, NULL); |
| goto error; |
| } |
| |
| rc = pysqlite_step(statement, self); |
| if (rc != SQLITE_DONE) { |
| _pysqlite_seterror(self->db, statement); |
| } |
| |
| Py_BEGIN_ALLOW_THREADS |
| rc = sqlite3_finalize(statement); |
| Py_END_ALLOW_THREADS |
| if (rc != SQLITE_OK && !PyErr_Occurred()) { |
| _pysqlite_seterror(self->db, NULL); |
| } |
| |
| } |
| |
| error: |
| if (PyErr_Occurred()) { |
| return NULL; |
| } else { |
| Py_INCREF(Py_None); |
| return Py_None; |
| } |
| } |
| |
| PyObject* pysqlite_connection_rollback(pysqlite_Connection* self, PyObject* args) |
| { |
| int rc; |
| const char* tail; |
| 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(self->db, "ROLLBACK", -1, &statement, &tail); |
| Py_END_ALLOW_THREADS |
| if (rc != SQLITE_OK) { |
| _pysqlite_seterror(self->db, NULL); |
| goto error; |
| } |
| |
| rc = pysqlite_step(statement, self); |
| if (rc != SQLITE_DONE) { |
| _pysqlite_seterror(self->db, statement); |
| } |
| |
| Py_BEGIN_ALLOW_THREADS |
| rc = sqlite3_finalize(statement); |
| Py_END_ALLOW_THREADS |
| if (rc != SQLITE_OK && !PyErr_Occurred()) { |
| _pysqlite_seterror(self->db, NULL); |
| } |
| |
| } |
| |
| error: |
| if (PyErr_Occurred()) { |
| return NULL; |
| } else { |
| Py_INCREF(Py_None); |
| return Py_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; |
| } |
| |
| 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; |
| const char* val_str; |
| Py_ssize_t buflen; |
| |
| 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 = _pysqlite_long_from_int64(sqlite3_value_int64(cur_value)); |
| break; |
| case SQLITE_FLOAT: |
| cur_py_value = PyFloat_FromDouble(sqlite3_value_double(cur_value)); |
| break; |
| case SQLITE_TEXT: |
| val_str = (const char*)sqlite3_value_text(cur_value); |
| cur_py_value = PyUnicode_FromString(val_str); |
| /* TODO: have a way to show errors here */ |
| if (!cur_py_value) { |
| PyErr_Clear(); |
| Py_INCREF(Py_None); |
| cur_py_value = Py_None; |
| } |
| break; |
| case SQLITE_BLOB: |
| buflen = sqlite3_value_bytes(cur_value); |
| cur_py_value = PyBytes_FromStringAndSize( |
| sqlite3_value_blob(cur_value), buflen); |
| break; |
| case SQLITE_NULL: |
| default: |
| Py_INCREF(Py_None); |
| cur_py_value = Py_None; |
| } |
| |
| if (!cur_py_value) { |
| Py_DECREF(args); |
| return NULL; |
| } |
| |
| PyTuple_SetItem(args, i, cur_py_value); |
| |
| } |
| |
| return args; |
| } |
| |
| void _pysqlite_func_callback(sqlite3_context* context, int argc, sqlite3_value** argv) |
| { |
| PyObject* args; |
| PyObject* py_func; |
| PyObject* py_retval = NULL; |
| int ok; |
| |
| #ifdef WITH_THREAD |
| PyGILState_STATE threadstate; |
| |
| threadstate = PyGILState_Ensure(); |
| #endif |
| |
| 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) { |
| if (_enable_callback_tracebacks) { |
| PyErr_Print(); |
| } else { |
| PyErr_Clear(); |
| } |
| _sqlite3_result_error(context, "user-defined function raised exception", -1); |
| } |
| |
| #ifdef WITH_THREAD |
| PyGILState_Release(threadstate); |
| #endif |
| } |
| |
| 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; |
| |
| #ifdef WITH_THREAD |
| PyGILState_STATE threadstate; |
| |
| threadstate = PyGILState_Ensure(); |
| #endif |
| |
| aggregate_class = (PyObject*)sqlite3_user_data(context); |
| |
| aggregate_instance = (PyObject**)sqlite3_aggregate_context(context, sizeof(PyObject*)); |
| |
| if (*aggregate_instance == 0) { |
| *aggregate_instance = PyObject_CallFunction(aggregate_class, NULL); |
| |
| if (PyErr_Occurred()) { |
| *aggregate_instance = 0; |
| if (_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) { |
| if (_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); |
| |
| #ifdef WITH_THREAD |
| PyGILState_Release(threadstate); |
| #endif |
| } |
| |
| void _pysqlite_final_callback(sqlite3_context* context) |
| { |
| PyObject* function_result; |
| PyObject** aggregate_instance; |
| _Py_IDENTIFIER(finalize); |
| int ok; |
| PyObject *exception, *value, *tb; |
| int restore; |
| |
| #ifdef WITH_THREAD |
| PyGILState_STATE threadstate; |
| |
| threadstate = PyGILState_Ensure(); |
| #endif |
| |
| aggregate_instance = (PyObject**)sqlite3_aggregate_context(context, sizeof(PyObject*)); |
| 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); |
| restore = 1; |
| |
| function_result = _PyObject_CallMethodId(*aggregate_instance, &PyId_finalize, NULL); |
| |
| Py_DECREF(*aggregate_instance); |
| |
| ok = 0; |
| if (function_result) { |
| ok = _pysqlite_set_result(context, function_result) == 0; |
| Py_DECREF(function_result); |
| } |
| if (!ok) { |
| if (_enable_callback_tracebacks) { |
| PyErr_Print(); |
| } else { |
| PyErr_Clear(); |
| } |
| _sqlite3_result_error(context, "user-defined aggregate's 'finalize' method raised error", -1); |
| #if SQLITE_VERSION_NUMBER < 3003003 |
| /* with old SQLite versions, _sqlite3_result_error() sets a new Python |
| exception, so don't restore the previous exception */ |
| restore = 0; |
| #endif |
| } |
| |
| if (restore) { |
| /* 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: |
| #ifdef WITH_THREAD |
| PyGILState_Release(threadstate); |
| #endif |
| /* explicit return to avoid a compilation error if WITH_THREAD |
| is not defined */ |
| return; |
| } |
| |
| 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); |
| } |
| |
| PyObject* pysqlite_connection_create_function(pysqlite_Connection* self, PyObject* args, PyObject* kwargs) |
| { |
| static char *kwlist[] = {"name", "narg", "func", NULL, NULL}; |
| |
| PyObject* func; |
| char* name; |
| int narg; |
| int rc; |
| |
| if (!pysqlite_check_thread(self) || !pysqlite_check_connection(self)) { |
| return NULL; |
| } |
| |
| if (!PyArg_ParseTupleAndKeywords(args, kwargs, "siO", kwlist, |
| &name, &narg, &func)) |
| { |
| return NULL; |
| } |
| |
| rc = sqlite3_create_function(self->db, name, narg, SQLITE_UTF8, (void*)func, _pysqlite_func_callback, NULL, NULL); |
| |
| if (rc != SQLITE_OK) { |
| /* Workaround for SQLite bug: no error code or string is available here */ |
| PyErr_SetString(pysqlite_OperationalError, "Error creating function"); |
| return NULL; |
| } else { |
| if (PyDict_SetItem(self->function_pinboard, func, Py_None) == -1) |
| return NULL; |
| |
| Py_RETURN_NONE; |
| } |
| } |
| |
| PyObject* pysqlite_connection_create_aggregate(pysqlite_Connection* self, PyObject* args, PyObject* kwargs) |
| { |
| PyObject* aggregate_class; |
| |
| int n_arg; |
| char* name; |
| static char *kwlist[] = { "name", "n_arg", "aggregate_class", NULL }; |
| int rc; |
| |
| if (!pysqlite_check_thread(self) || !pysqlite_check_connection(self)) { |
| return NULL; |
| } |
| |
| if (!PyArg_ParseTupleAndKeywords(args, kwargs, "siO:create_aggregate", |
| kwlist, &name, &n_arg, &aggregate_class)) { |
| return NULL; |
| } |
| |
| rc = sqlite3_create_function(self->db, name, n_arg, SQLITE_UTF8, (void*)aggregate_class, 0, &_pysqlite_step_callback, &_pysqlite_final_callback); |
| if (rc != SQLITE_OK) { |
| /* Workaround for SQLite bug: no error code or string is available here */ |
| PyErr_SetString(pysqlite_OperationalError, "Error creating aggregate"); |
| return NULL; |
| } else { |
| if (PyDict_SetItem(self->function_pinboard, aggregate_class, Py_None) == -1) |
| 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; |
| #ifdef WITH_THREAD |
| PyGILState_STATE gilstate; |
| |
| gilstate = PyGILState_Ensure(); |
| #endif |
| |
| ret = PyObject_CallFunction((PyObject*)user_arg, "issss", action, arg1, arg2, dbname, access_attempt_source); |
| |
| if (ret == NULL) { |
| if (_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()) { |
| if (_enable_callback_tracebacks) |
| PyErr_Print(); |
| else |
| PyErr_Clear(); |
| rc = SQLITE_DENY; |
| } |
| } |
| else { |
| rc = SQLITE_DENY; |
| } |
| Py_DECREF(ret); |
| } |
| |
| #ifdef WITH_THREAD |
| PyGILState_Release(gilstate); |
| #endif |
| return rc; |
| } |
| |
| static int _progress_handler(void* user_arg) |
| { |
| int rc; |
| PyObject *ret; |
| #ifdef WITH_THREAD |
| PyGILState_STATE gilstate; |
| |
| gilstate = PyGILState_Ensure(); |
| #endif |
| ret = PyObject_CallFunction((PyObject*)user_arg, NULL); |
| |
| if (!ret) { |
| if (_enable_callback_tracebacks) { |
| PyErr_Print(); |
| } else { |
| PyErr_Clear(); |
| } |
| |
| /* abort query if error occurred */ |
| rc = 1; |
| } else { |
| rc = (int)PyObject_IsTrue(ret); |
| Py_DECREF(ret); |
| } |
| |
| #ifdef WITH_THREAD |
| PyGILState_Release(gilstate); |
| #endif |
| return rc; |
| } |
| |
| static void _trace_callback(void* user_arg, const char* statement_string) |
| { |
| PyObject *py_statement = NULL; |
| PyObject *ret = NULL; |
| |
| #ifdef WITH_THREAD |
| PyGILState_STATE gilstate; |
| |
| gilstate = PyGILState_Ensure(); |
| #endif |
| py_statement = PyUnicode_DecodeUTF8(statement_string, |
| strlen(statement_string), "replace"); |
| if (py_statement) { |
| ret = PyObject_CallFunctionObjArgs((PyObject*)user_arg, py_statement, NULL); |
| Py_DECREF(py_statement); |
| } |
| |
| if (ret) { |
| Py_DECREF(ret); |
| } else { |
| if (_enable_callback_tracebacks) { |
| PyErr_Print(); |
| } else { |
| PyErr_Clear(); |
| } |
| } |
| |
| #ifdef WITH_THREAD |
| PyGILState_Release(gilstate); |
| #endif |
| } |
| |
| static PyObject* pysqlite_connection_set_authorizer(pysqlite_Connection* self, PyObject* args, PyObject* kwargs) |
| { |
| PyObject* authorizer_cb; |
| |
| static char *kwlist[] = { "authorizer_callback", NULL }; |
| int rc; |
| |
| if (!pysqlite_check_thread(self) || !pysqlite_check_connection(self)) { |
| return NULL; |
| } |
| |
| if (!PyArg_ParseTupleAndKeywords(args, kwargs, "O:set_authorizer", |
| kwlist, &authorizer_cb)) { |
| return NULL; |
| } |
| |
| rc = sqlite3_set_authorizer(self->db, _authorizer_callback, (void*)authorizer_cb); |
| |
| if (rc != SQLITE_OK) { |
| PyErr_SetString(pysqlite_OperationalError, "Error setting authorizer callback"); |
| return NULL; |
| } else { |
| if (PyDict_SetItem(self->function_pinboard, authorizer_cb, Py_None) == -1) |
| return NULL; |
| |
| Py_RETURN_NONE; |
| } |
| } |
| |
| static PyObject* pysqlite_connection_set_progress_handler(pysqlite_Connection* self, PyObject* args, PyObject* kwargs) |
| { |
| PyObject* progress_handler; |
| int n; |
| |
| static char *kwlist[] = { "progress_handler", "n", NULL }; |
| |
| if (!pysqlite_check_thread(self) || !pysqlite_check_connection(self)) { |
| return NULL; |
| } |
| |
| if (!PyArg_ParseTupleAndKeywords(args, kwargs, "Oi:set_progress_handler", |
| kwlist, &progress_handler, &n)) { |
| return NULL; |
| } |
| |
| if (progress_handler == Py_None) { |
| /* None clears the progress handler previously set */ |
| sqlite3_progress_handler(self->db, 0, 0, (void*)0); |
| } else { |
| sqlite3_progress_handler(self->db, n, _progress_handler, progress_handler); |
| if (PyDict_SetItem(self->function_pinboard, progress_handler, Py_None) == -1) |
| return NULL; |
| } |
| |
| Py_RETURN_NONE; |
| } |
| |
| static PyObject* pysqlite_connection_set_trace_callback(pysqlite_Connection* self, PyObject* args, PyObject* kwargs) |
| { |
| PyObject* trace_callback; |
| |
| static char *kwlist[] = { "trace_callback", NULL }; |
| |
| if (!pysqlite_check_thread(self) || !pysqlite_check_connection(self)) { |
| return NULL; |
| } |
| |
| if (!PyArg_ParseTupleAndKeywords(args, kwargs, "O:set_trace_callback", |
| kwlist, &trace_callback)) { |
| return NULL; |
| } |
| |
| if (trace_callback == Py_None) { |
| /* None clears the trace callback previously set */ |
| sqlite3_trace(self->db, 0, (void*)0); |
| } else { |
| if (PyDict_SetItem(self->function_pinboard, trace_callback, Py_None) == -1) |
| return NULL; |
| sqlite3_trace(self->db, _trace_callback, trace_callback); |
| } |
| |
| Py_RETURN_NONE; |
| } |
| |
| #ifdef HAVE_LOAD_EXTENSION |
| static PyObject* pysqlite_enable_load_extension(pysqlite_Connection* self, PyObject* args) |
| { |
| int rc; |
| int onoff; |
| |
| if (!pysqlite_check_thread(self) || !pysqlite_check_connection(self)) { |
| return NULL; |
| } |
| |
| if (!PyArg_ParseTuple(args, "i", &onoff)) { |
| return NULL; |
| } |
| |
| rc = sqlite3_enable_load_extension(self->db, onoff); |
| |
| if (rc != SQLITE_OK) { |
| PyErr_SetString(pysqlite_OperationalError, "Error enabling load extension"); |
| return NULL; |
| } else { |
| Py_RETURN_NONE; |
| } |
| } |
| |
| static PyObject* pysqlite_load_extension(pysqlite_Connection* self, PyObject* args) |
| { |
| int rc; |
| char* extension_name; |
| char* errmsg; |
| |
| if (!pysqlite_check_thread(self) || !pysqlite_check_connection(self)) { |
| return NULL; |
| } |
| |
| if (!PyArg_ParseTuple(args, "s", &extension_name)) { |
| return NULL; |
| } |
| |
| rc = sqlite3_load_extension(self->db, extension_name, 0, &errmsg); |
| if (rc != 0) { |
| PyErr_SetString(pysqlite_OperationalError, errmsg); |
| return NULL; |
| } else { |
| Py_RETURN_NONE; |
| } |
| } |
| #endif |
| |
| int pysqlite_check_thread(pysqlite_Connection* self) |
| { |
| #ifdef WITH_THREAD |
| if (self->check_same_thread) { |
| if (PyThread_get_thread_ident() != self->thread_ident) { |
| PyErr_Format(pysqlite_ProgrammingError, |
| "SQLite objects created in a thread can only be used in that same thread." |
| "The object was created in thread id %ld and this is thread id %ld", |
| self->thread_ident, PyThread_get_thread_ident()); |
| return 0; |
| } |
| |
| } |
| #endif |
| return 1; |
| } |
| |
| static PyObject* pysqlite_connection_get_isolation_level(pysqlite_Connection* self, void* unused) |
| { |
| Py_INCREF(self->isolation_level); |
| return 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) |
| { |
| 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_CallMethodIdObjArgs( |
| (PyObject *)&PyUnicode_Type, &PyId_upper, |
| isolation_level, NULL); |
| 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; |
| } |
| |
| PyObject* pysqlite_connection_call(pysqlite_Connection* self, PyObject* args, PyObject* kwargs) |
| { |
| PyObject* sql; |
| pysqlite_Statement* statement; |
| PyObject* weakref; |
| int rc; |
| |
| if (!pysqlite_check_thread(self) || !pysqlite_check_connection(self)) { |
| return NULL; |
| } |
| |
| if (!_PyArg_NoKeywords(MODULE_NAME ".Connection()", kwargs)) |
| return NULL; |
| |
| if (!PyArg_ParseTuple(args, "O", &sql)) |
| return NULL; |
| |
| _pysqlite_drop_unused_statement_references(self); |
| |
| statement = PyObject_New(pysqlite_Statement, &pysqlite_StatementType); |
| if (!statement) { |
| return NULL; |
| } |
| |
| statement->db = NULL; |
| statement->st = NULL; |
| statement->sql = NULL; |
| statement->in_use = 0; |
| statement->in_weakreflist = NULL; |
| |
| rc = pysqlite_statement_create(statement, self, sql); |
| if (rc != SQLITE_OK) { |
| if (rc == PYSQLITE_TOO_MUCH_SQL) { |
| PyErr_SetString(pysqlite_Warning, "You can only execute one statement at a time."); |
| } else if (rc == PYSQLITE_SQL_WRONG_TYPE) { |
| if (PyErr_ExceptionMatches(PyExc_TypeError)) |
| PyErr_SetString(pysqlite_Warning, "SQL is of wrong type. Must be string."); |
| } else { |
| (void)pysqlite_statement_reset(statement); |
| _pysqlite_seterror(self->db, NULL); |
| } |
| goto error; |
| } |
| |
| 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; |
| } |
| |
| PyObject* pysqlite_connection_execute(pysqlite_Connection* self, PyObject* args) |
| { |
| PyObject* cursor = 0; |
| PyObject* result = 0; |
| PyObject* method = 0; |
| |
| cursor = _PyObject_CallMethodId((PyObject*)self, &PyId_cursor, NULL); |
| if (!cursor) { |
| goto error; |
| } |
| |
| method = PyObject_GetAttrString(cursor, "execute"); |
| if (!method) { |
| Py_CLEAR(cursor); |
| goto error; |
| } |
| |
| result = PyObject_CallObject(method, args); |
| if (!result) { |
| Py_CLEAR(cursor); |
| } |
| |
| error: |
| Py_XDECREF(result); |
| Py_XDECREF(method); |
| |
| return cursor; |
| } |
| |
| PyObject* pysqlite_connection_executemany(pysqlite_Connection* self, PyObject* args) |
| { |
| PyObject* cursor = 0; |
| PyObject* result = 0; |
| PyObject* method = 0; |
| |
| cursor = _PyObject_CallMethodId((PyObject*)self, &PyId_cursor, NULL); |
| if (!cursor) { |
| goto error; |
| } |
| |
| method = PyObject_GetAttrString(cursor, "executemany"); |
| if (!method) { |
| Py_CLEAR(cursor); |
| goto error; |
| } |
| |
| result = PyObject_CallObject(method, args); |
| if (!result) { |
| Py_CLEAR(cursor); |
| } |
| |
| error: |
| Py_XDECREF(result); |
| Py_XDECREF(method); |
| |
| return cursor; |
| } |
| |
| PyObject* pysqlite_connection_executescript(pysqlite_Connection* self, PyObject* args) |
| { |
| PyObject* cursor = 0; |
| PyObject* result = 0; |
| PyObject* method = 0; |
| |
| cursor = _PyObject_CallMethodId((PyObject*)self, &PyId_cursor, NULL); |
| if (!cursor) { |
| goto error; |
| } |
| |
| method = PyObject_GetAttrString(cursor, "executescript"); |
| if (!method) { |
| Py_CLEAR(cursor); |
| goto error; |
| } |
| |
| result = PyObject_CallObject(method, args); |
| if (!result) { |
| Py_CLEAR(cursor); |
| } |
| |
| error: |
| Py_XDECREF(result); |
| Py_XDECREF(method); |
| |
| 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; |
| #ifdef WITH_THREAD |
| PyGILState_STATE gilstate; |
| #endif |
| PyObject* retval = NULL; |
| long longval; |
| int result = 0; |
| #ifdef WITH_THREAD |
| gilstate = PyGILState_Ensure(); |
| #endif |
| |
| 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 */ |
| } |
| |
| retval = PyObject_CallFunctionObjArgs(callback, string1, string2, NULL); |
| |
| if (!retval) { |
| /* 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); |
| #ifdef WITH_THREAD |
| PyGILState_Release(gilstate); |
| #endif |
| return result; |
| } |
| |
| static PyObject * |
| pysqlite_connection_interrupt(pysqlite_Connection* self, PyObject* args) |
| { |
| PyObject* retval = NULL; |
| |
| if (!pysqlite_check_connection(self)) { |
| goto finally; |
| } |
| |
| sqlite3_interrupt(self->db); |
| |
| Py_INCREF(Py_None); |
| retval = 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. |
| */ |
| static PyObject * |
| pysqlite_connection_iterdump(pysqlite_Connection* self, PyObject* args) |
| { |
| 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_GetItemString(module_dict, "_iterdump"); |
| if (!pyfn_iterdump) { |
| PyErr_SetString(pysqlite_OperationalError, "Failed to obtain _iterdump() reference"); |
| goto finally; |
| } |
| |
| args = PyTuple_New(1); |
| if (!args) { |
| goto finally; |
| } |
| Py_INCREF(self); |
| PyTuple_SetItem(args, 0, (PyObject*)self); |
| retval = PyObject_CallObject(pyfn_iterdump, args); |
| |
| finally: |
| Py_XDECREF(args); |
| Py_XDECREF(module); |
| return retval; |
| } |
| |
| static PyObject * |
| pysqlite_connection_create_collation(pysqlite_Connection* self, PyObject* args) |
| { |
| PyObject* callable; |
| PyObject* uppercase_name = 0; |
| PyObject* name; |
| PyObject* retval; |
| Py_ssize_t i, len; |
| _Py_IDENTIFIER(upper); |
| char *uppercase_name_str; |
| int rc; |
| unsigned int kind; |
| void *data; |
| |
| if (!pysqlite_check_thread(self) || !pysqlite_check_connection(self)) { |
| goto finally; |
| } |
| |
| if (!PyArg_ParseTuple(args, "UO:create_collation(name, callback)", |
| &name, &callable)) { |
| goto finally; |
| } |
| |
| uppercase_name = _PyObject_CallMethodIdObjArgs((PyObject *)&PyUnicode_Type, |
| &PyId_upper, name, NULL); |
| 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(pysqlite_ProgrammingError, "invalid character in collation name"); |
| goto finally; |
| } |
| } |
| |
| uppercase_name_str = PyUnicode_AsUTF8(uppercase_name); |
| if (!uppercase_name_str) |
| goto finally; |
| |
| if (callable != Py_None && !PyCallable_Check(callable)) { |
| PyErr_SetString(PyExc_TypeError, "parameter must be callable"); |
| goto finally; |
| } |
| |
| if (callable != Py_None) { |
| if (PyDict_SetItem(self->collations, uppercase_name, callable) == -1) |
| goto finally; |
| } else { |
| if (PyDict_DelItem(self->collations, uppercase_name) == -1) |
| goto finally; |
| } |
| |
| rc = sqlite3_create_collation(self->db, |
| uppercase_name_str, |
| SQLITE_UTF8, |
| (callable != Py_None) ? callable : NULL, |
| (callable != Py_None) ? pysqlite_collation_callback : NULL); |
| if (rc != SQLITE_OK) { |
| PyDict_DelItem(self->collations, uppercase_name); |
| _pysqlite_seterror(self->db, NULL); |
| goto finally; |
| } |
| |
| finally: |
| Py_XDECREF(uppercase_name); |
| |
| if (PyErr_Occurred()) { |
| retval = NULL; |
| } else { |
| Py_INCREF(Py_None); |
| retval = Py_None; |
| } |
| |
| return retval; |
| } |
| |
| /* Called when the connection is used as a context manager. Returns itself as a |
| * convenience to the caller. */ |
| static PyObject * |
| pysqlite_connection_enter(pysqlite_Connection* self, PyObject* args) |
| { |
| Py_INCREF(self); |
| return (PyObject*)self; |
| } |
| |
| /** Called when the connection is used as a context manager. If there was any |
| * exception, a rollback takes place; otherwise we commit. */ |
| static PyObject * |
| pysqlite_connection_exit(pysqlite_Connection* self, PyObject* args) |
| { |
| PyObject* exc_type, *exc_value, *exc_tb; |
| char* method_name; |
| PyObject* result; |
| |
| if (!PyArg_ParseTuple(args, "OOO", &exc_type, &exc_value, &exc_tb)) { |
| return NULL; |
| } |
| |
| 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[] = { |
| {"cursor", (PyCFunction)pysqlite_connection_cursor, METH_VARARGS|METH_KEYWORDS, |
| PyDoc_STR("Return a cursor for the connection.")}, |
| {"close", (PyCFunction)pysqlite_connection_close, METH_NOARGS, |
| PyDoc_STR("Closes the connection.")}, |
| {"commit", (PyCFunction)pysqlite_connection_commit, METH_NOARGS, |
| PyDoc_STR("Commit the current transaction.")}, |
| {"rollback", (PyCFunction)pysqlite_connection_rollback, METH_NOARGS, |
| PyDoc_STR("Roll back the current transaction.")}, |
| {"create_function", (PyCFunction)pysqlite_connection_create_function, METH_VARARGS|METH_KEYWORDS, |
| PyDoc_STR("Creates a new function. Non-standard.")}, |
| {"create_aggregate", (PyCFunction)pysqlite_connection_create_aggregate, METH_VARARGS|METH_KEYWORDS, |
| PyDoc_STR("Creates a new aggregate. Non-standard.")}, |
| {"set_authorizer", (PyCFunction)pysqlite_connection_set_authorizer, METH_VARARGS|METH_KEYWORDS, |
| PyDoc_STR("Sets authorizer callback. Non-standard.")}, |
| #ifdef HAVE_LOAD_EXTENSION |
| {"enable_load_extension", (PyCFunction)pysqlite_enable_load_extension, METH_VARARGS, |
| PyDoc_STR("Enable dynamic loading of SQLite extension modules. Non-standard.")}, |
| {"load_extension", (PyCFunction)pysqlite_load_extension, METH_VARARGS, |
| PyDoc_STR("Load SQLite extension module. Non-standard.")}, |
| #endif |
| {"set_progress_handler", (PyCFunction)pysqlite_connection_set_progress_handler, METH_VARARGS|METH_KEYWORDS, |
| PyDoc_STR("Sets progress handler callback. Non-standard.")}, |
| {"set_trace_callback", (PyCFunction)pysqlite_connection_set_trace_callback, METH_VARARGS|METH_KEYWORDS, |
| PyDoc_STR("Sets a trace callback called for each SQL statement (passed as unicode). Non-standard.")}, |
| {"execute", (PyCFunction)pysqlite_connection_execute, METH_VARARGS, |
| PyDoc_STR("Executes a SQL statement. Non-standard.")}, |
| {"executemany", (PyCFunction)pysqlite_connection_executemany, METH_VARARGS, |
| PyDoc_STR("Repeatedly executes a SQL statement. Non-standard.")}, |
| {"executescript", (PyCFunction)pysqlite_connection_executescript, METH_VARARGS, |
| PyDoc_STR("Executes a multiple SQL statements at once. Non-standard.")}, |
| {"create_collation", (PyCFunction)pysqlite_connection_create_collation, METH_VARARGS, |
| PyDoc_STR("Creates a collation function. Non-standard.")}, |
| {"interrupt", (PyCFunction)pysqlite_connection_interrupt, METH_NOARGS, |
| PyDoc_STR("Abort any pending database operation. Non-standard.")}, |
| {"iterdump", (PyCFunction)pysqlite_connection_iterdump, METH_NOARGS, |
| PyDoc_STR("Returns iterator to the dump of the database in an SQL text format. Non-standard.")}, |
| {"__enter__", (PyCFunction)pysqlite_connection_enter, METH_NOARGS, |
| PyDoc_STR("For context manager. Non-standard.")}, |
| {"__exit__", (PyCFunction)pysqlite_connection_exit, METH_VARARGS, |
| PyDoc_STR("For context manager. Non-standard.")}, |
| {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} |
| }; |
| |
| PyTypeObject pysqlite_ConnectionType = { |
| PyVarObject_HEAD_INIT(NULL, 0) |
| MODULE_NAME ".Connection", /* tp_name */ |
| sizeof(pysqlite_Connection), /* tp_basicsize */ |
| 0, /* tp_itemsize */ |
| (destructor)pysqlite_connection_dealloc, /* tp_dealloc */ |
| 0, /* tp_print */ |
| 0, /* tp_getattr */ |
| 0, /* tp_setattr */ |
| 0, /* tp_reserved */ |
| 0, /* tp_repr */ |
| 0, /* tp_as_number */ |
| 0, /* tp_as_sequence */ |
| 0, /* tp_as_mapping */ |
| 0, /* tp_hash */ |
| (ternaryfunc)pysqlite_connection_call, /* tp_call */ |
| 0, /* tp_str */ |
| 0, /* tp_getattro */ |
| 0, /* tp_setattro */ |
| 0, /* tp_as_buffer */ |
| Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE, /* tp_flags */ |
| connection_doc, /* tp_doc */ |
| 0, /* tp_traverse */ |
| 0, /* tp_clear */ |
| 0, /* tp_richcompare */ |
| 0, /* tp_weaklistoffset */ |
| 0, /* tp_iter */ |
| 0, /* tp_iternext */ |
| connection_methods, /* tp_methods */ |
| connection_members, /* tp_members */ |
| connection_getset, /* tp_getset */ |
| 0, /* tp_base */ |
| 0, /* tp_dict */ |
| 0, /* tp_descr_get */ |
| 0, /* tp_descr_set */ |
| 0, /* tp_dictoffset */ |
| (initproc)pysqlite_connection_init, /* tp_init */ |
| 0, /* tp_alloc */ |
| 0, /* tp_new */ |
| 0 /* tp_free */ |
| }; |
| |
| extern int pysqlite_connection_setup_types(void) |
| { |
| pysqlite_ConnectionType.tp_new = PyType_GenericNew; |
| return PyType_Ready(&pysqlite_ConnectionType); |
| } |