# Copyright (c) 2016, 2019, Oracle and/or its affiliates. All rights reserved. # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License, version 2.0, # as published by the Free Software Foundation. # # This program is also distributed with certain software (including # but not limited to OpenSSL) that is licensed under separate terms, as # designated in a particular file or component or in included license # documentation. The authors of MySQL hereby grant you an additional # permission to link the program and your derivative works with the # separately licensed software that they have included with MySQL. # This program is distributed in the hope that it will be useful, but # WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See # the GNU General Public License, version 2.0, for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software Foundation, Inc., # 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA import sqlite3 import os.path from db_generic_re_grt import GenericReverseEngineering from wb import DefineModule from workbench.utils import server_version_str2tuple from workbench.exceptions import NotConnectedError import grt ModuleInfo = DefineModule(name= "DbSQLiteRE", author= "Oracle Corp.", version="1.0") class SQLiteReverseEngineering(GenericReverseEngineering): @classmethod def getTargetDBMSName(cls): return 'SQLite' @classmethod def serverVersion(cls, connection): return cls._connections[connection.__id__]["version"] ######### Connection related functions ######### @classmethod def connect(cls, connection, password): '''Establishes a connection to the server and stores the connection object in the connections pool. It first looks for a connection with the given connection parameters in the connections pool to reuse existent connections. If such connection is found it queries the server to ensure that the connection is alive and reestablishes it if is dead. If no suitable connection is found in the connections pool, a new one is created and stored in the pool. Parameters: =========== connection: an object of the class db_mgmt_Connection storing the parameters for the connection. password: a string with the password to use for the connection (ignored for SQLite). ''' con = None try: con = cls.get_connection(connection) try: if not con.cursor().execute('SELECT 1'): raise Exception('connection error') except Exception as exc: grt.send_info('Connection to %s apparently lost, reconnecting...' % connection.hostIdentifier) raise NotConnectedError('Connection error') except NotConnectedError as exc: grt.send_info('Connecting to %s...' % connection.hostIdentifier) con = sqlite3.connect(connection.parameterValues['dbfile']) if not con: grt.send_error('Connection failed', str(exc)) raise connection.parameterValues['wbcopytables_connection_string'] = "'" + connection.parameterValues['dbfile'] + "'" grt.send_info('Connected') cls._connections[connection.__id__] = {'connection': con} if con: ver = cls.execute_query(connection, "SELECT sqlite_version()").fetchone()[0] grt.log_info('SQLite RE', 'Connected to %s, %s' % (connection.name, ver)) ver_parts = server_version_str2tuple(ver) + (0, 0, 0, 0) version = grt.classes.GrtVersion() version.majorNumber, version.minorNumber, version.releaseNumber, version.buildNumber = ver_parts[:4] cls._connections[connection.__id__]['version'] = version return 1 @classmethod def getCatalogNames(cls, connection): """Returns a list of the available catalogs. """ return ['def'] @classmethod def getSchemaNames(cls, connection, catalog_name): """Returns a list of schemata for the given connection object.""" return [os.path.splitext(os.path.basename(connection.parameterValues['dbfile']))[0]] @classmethod def getTableNames(cls, connection, catalog_name, schema_name): query = """SELECT name FROM sqlite_master WHERE type='table' AND NOT name LIKE 'sqlite_%'""" return [row[0] for row in cls.execute_query(connection, query)] @classmethod def getViewNames(cls, connection, catalog_name, schema_name): return [] @classmethod def getProcedureNames(cls, connection, catalog_name, schema_name): return [] ######### Reverse Engineering functions ######### @classmethod def reverseEngineer(cls, connection, catalog_name, schemata_list, context): grt.send_progress(0, "Reverse engineering catalog information") cls.check_interruption() catalog = cls.reverseEngineerCatalog(connection, catalog_name) # calculate total workload 1st grt.send_progress(0.1, 'Preparing...') get_tables = context.get("reverseEngineerTables", True) # 10% of the progress is for preparation total = 1e-10 # total should not be zero to avoid DivisionByZero exceptions total += len(cls.getTableNames(connection, catalog_name, '')) if get_tables else 0 grt.send_progress(0.1, "Gathered stats") # Now the second pass for reverse engineering tables: if get_tables: idx = 0 for object_type, name, tbl_name, _, sql in cls.execute_query(connection, "SELECT * FROM sqlite_master"): if type in ('view', 'trigger') or not sql or tbl_name.startswith('sqlite_'): continue sql = sql.replace('[', '').replace(']', '') grt.log_debug('SQLiteReverseEngineering', 'Processing this sql:\n%s;' % sql) grt.modules.MysqlSqlFacade.parseSqlScriptString(catalog, sql) cls.check_interruption() grt.send_progress(0.1 + idx / total, 'Object %s reverse engineered!' % name) idx += 1 grt.send_progress(1.0, 'Reverse engineering completed!') return catalog @classmethod def reverseEngineerCatalog(cls, connection, catalog_name): catalog = grt.classes.db_mysql_Catalog() catalog.name = catalog_name catalog.simpleDatatypes.extend(cls._rdbms.simpleDatatypes) schemata_names = cls.getSchemaNames(connection, catalog_name) or [''] catalog.schemata.remove_all() for schema_name in schemata_names: schema = grt.classes.db_mysql_Schema() schema.name = schema_name schema.owner = catalog if hasattr(cls, 'reverseEngineerSequences'): cls.reverseEngineerSequences(connection, schema) catalog.schemata.append(schema) return catalog @classmethod def getCommentForTable(cls, connection, table): pass @classmethod def reverseEngineerUserDatatypes(cls, connection, catalog): pass ########################################################################################### @ModuleInfo.export(grt.classes.db_mgmt_Rdbms) def initializeDBMSInfo(): return SQLiteReverseEngineering.initializeDBMSInfo('sqlite_rdbms_info.xml') @ModuleInfo.export((grt.LIST, grt.STRING)) def getDataSourceNames(): return SQLiteReverseEngineering.getDataSourceNames() @ModuleInfo.export(grt.STRING, grt.STRING) def quoteIdentifier(name): return SQLiteReverseEngineering.quoteIdentifier(name) @ModuleInfo.export(grt.STRING, grt.classes.GrtNamedObject) def fullyQualifiedObjectName(obj): return SQLiteReverseEngineering.fullyQualifiedObjectName(obj) @ModuleInfo.export(grt.INT, grt.classes.db_mgmt_Connection, grt.STRING) def connect(connection, password): return SQLiteReverseEngineering.connect(connection, password) @ModuleInfo.export(grt.INT, grt.classes.db_mgmt_Connection) def disconnect(connection): return SQLiteReverseEngineering.disconnect(connection) @ModuleInfo.export(grt.INT, grt.classes.db_mgmt_Connection) def isConnected(connection): return SQLiteReverseEngineering.isConnected(connection) @ModuleInfo.export(grt.STRING) def getTargetDBMSName(): return SQLiteReverseEngineering.getTargetDBMSName() @ModuleInfo.export(grt.LIST) def getSupportedObjectTypes(): return SQLiteReverseEngineering.getSupportedObjectTypes() @ModuleInfo.export(grt.classes.GrtVersion, grt.classes.db_mgmt_Connection) def getServerVersion(connection): return SQLiteReverseEngineering.getServerVersion(connection) @ModuleInfo.export(grt.LIST, grt.classes.db_mgmt_Connection) def getCatalogNames(connection): return SQLiteReverseEngineering.getCatalogNames(connection) @ModuleInfo.export(grt.LIST, grt.classes.db_mgmt_Connection, grt.STRING) def getSchemaNames(connection, catalog_name): return SQLiteReverseEngineering.getSchemaNames(connection, catalog_name) @ModuleInfo.export(grt.LIST, grt.classes.db_mgmt_Connection, grt.STRING, grt.STRING) def getTableNames(connection, catalog_name, schema_name): return SQLiteReverseEngineering.getTableNames(connection, catalog_name, schema_name) @ModuleInfo.export(grt.LIST, grt.classes.db_mgmt_Connection, grt.STRING, grt.STRING) def getViewNames(connection, catalog_name, schema_name): return SQLiteReverseEngineering.getViewNames(connection, catalog_name, schema_name) @ModuleInfo.export(grt.LIST, grt.classes.db_mgmt_Connection, grt.STRING, grt.STRING) def getTriggerNames(connection, catalog_name, schema_name): return SQLiteReverseEngineering.getTriggerNames(connection, catalog_name, schema_name) @ModuleInfo.export(grt.LIST, grt.classes.db_mgmt_Connection, grt.STRING, grt.STRING) def getProcedureNames(connection, catalog_name, schema_name): return SQLiteReverseEngineering.getProcedureNames(connection, catalog_name, schema_name) @ModuleInfo.export(grt.LIST, grt.classes.db_mgmt_Connection, grt.STRING, grt.STRING) def getFunctionNames(connection, catalog_name, schema_name): return SQLiteReverseEngineering.getFunctionNames(connection, catalog_name, schema_name) @ModuleInfo.export(grt.classes.db_Catalog, grt.classes.db_mgmt_Connection, grt.STRING, (grt.LIST, grt.STRING), grt.DICT) def reverseEngineer(connection, catalog_name, schemata_list, context): return SQLiteReverseEngineering.reverseEngineer(connection, catalog_name, schemata_list, context) @ModuleInfo.export(grt.INT, grt.classes.db_mgmt_Connection, grt.classes.db_Catalog) def reverseEngineerUserDatatypes(connection, catalog): return SQLiteReverseEngineering.reverseEngineerUserDatatypes(connection, catalog) @ModuleInfo.export(grt.classes.db_Catalog, grt.classes.db_mgmt_Connection, grt.STRING) def reverseEngineerCatalog(connection, catalog_name): return SQLiteReverseEngineering.reverseEngineerCatalog(connection, catalog_name) @ModuleInfo.export(grt.INT, grt.classes.db_mgmt_Connection, grt.classes.db_Schema) def reverseEngineerTables(connection, schema): return SQLiteReverseEngineering.reverseEngineerTables(connection, schema) @ModuleInfo.export(grt.INT, grt.classes.db_mgmt_Connection, grt.classes.db_Schema) def reverseEngineerViews(connection, schema): return SQLiteReverseEngineering.reverseEngineerViews(connection, schema) @ModuleInfo.export(grt.INT, grt.classes.db_mgmt_Connection, grt.classes.db_Schema) def reverseEngineerProcedures(connection, schema): return SQLiteReverseEngineering.reverseEngineerProcedures(connection, schema) @ModuleInfo.export(grt.INT, grt.classes.db_mgmt_Connection, grt.classes.db_Schema) def reverseEngineerFunctions(connection, schema): return SQLiteReverseEngineering.reverseEngineerFunctions(connection, schema) @ModuleInfo.export(grt.INT, grt.classes.db_mgmt_Connection, grt.classes.db_Schema) def reverseEngineerTriggers(connection, schema): return SQLiteReverseEngineering.reverseEngineerTriggers(connection, schema)