def parse(database, statement): parser = Parser(statement) parser.expect("ALTER", "VIEW") viewName = parser.parse_identifier() schemaName = ParserUtils.get_schema_name(viewName, database) schema = database.getSchema(schemaName) if schema is None: raise Exception( "Cannot find schema '%s' for statement '%s'. Missing CREATE SCHEMA statement?" % (schemaName, statement)) objectName = ParserUtils.get_object_name(viewName) view = schema.views[objectName] if view is None: raise Exception( "Cannot find view '%s' for statement '%s'. Missing CREATE VIEW statement?" % (viewName, statement)) while not parser.expect_optional(";"): if parser.expect_optional("ALTER"): parser.expect_optional("COLUMN") columnName = ParserUtils.get_object_name( parser.parse_identifier()) if parser.expect_optional("SET", "DEFAULT"): expression = parser.get_expression() view.addColumnDefaultValue(columnName, expression) elif parser.expect_optional("DROP", "DEFAULT"): view.removeColumnDefaultValue(columnName) else: parser.throw_unsupported_command() elif parser.expect_optional("OWNER", "TO"): # we do not parse this one so we just consume the identifier # if (outputIgnoredStatements) { # database.addIgnoredStatement("ALTER TABLE " + viewName # + " OWNER TO " + parser.parseIdentifier() + ';'); # } else { parser.parse_identifier() # } else: parser.throw_unsupported_command()
def parse(database, statement): parser = Parser(statement) parser.expect("ALTER", "VIEW") viewName = parser.parse_identifier() schemaName = ParserUtils.get_schema_name(viewName, database) schema = database.getSchema(schemaName) if schema is None: raise Exception("Cannot find schema '%s' for statement '%s'. Missing CREATE SCHEMA statement?" % (schemaName, statement)) objectName = ParserUtils.get_object_name(viewName) view = schema.views[objectName] if view is None: raise Exception("Cannot find view '%s' for statement '%s'. Missing CREATE VIEW statement?" % (viewName, statement)) while not parser.expect_optional(";"): if parser.expect_optional("ALTER"): parser.expect_optional("COLUMN") columnName = ParserUtils.get_object_name(parser.parse_identifier()) if parser.expect_optional("SET", "DEFAULT"): expression = parser.get_expression() view.addColumnDefaultValue(columnName, expression) elif parser.expect_optional("DROP", "DEFAULT"): view.removeColumnDefaultValue(columnName) else: parser.throw_unsupported_command() elif parser.expect_optional("OWNER", "TO"): # we do not parse this one so we just consume the identifier # if (outputIgnoredStatements) { # database.addIgnoredStatement("ALTER TABLE " + viewName # + " OWNER TO " + parser.parseIdentifier() + ';'); # } else { parser.parse_identifier() # } else: parser.throw_unsupported_command()
def parse(database, statement, ignoreSlonyTriggers): parser = Parser(statement) parser.expect("CREATE", "TRIGGER") triggerName = parser.parse_identifier() objectName = ParserUtils.get_object_name(triggerName) trigger = PgTrigger() trigger.name = objectName if parser.expect_optional("BEFORE"): trigger.event = PgTrigger.EVENT_BEFORE elif parser.expect_optional("AFTER"): trigger.event = PgTrigger.EVENT_AFTER elif parser.expect_optional("INSTEAD OF"): trigger.event = PgTrigger.EVENT_INSTEAD_OF first = True while True: if not first and not parser.expect_optional("OR"): break elif parser.expect_optional("INSERT"): trigger.onInsert = True elif parser.expect_optional("UPDATE"): trigger.onUpdate = True if parser.expect_optional("OF"): while True: trigger.updateColumns.append(parser.parse_identifier()) if not parser.expect_optional(","): break elif parser.expect_optional("DELETE"): trigger.onDelete = True elif parser.expect_optional("TRUNCATE"): trigger.onTruncate = True elif (first): break else: parser.throw_unsupported_command() first = False parser.expect("ON") trigger.tableName = ParserUtils.get_object_name(parser.parse_identifier()) if parser.expect_optional("FOR"): parser.expect_optional("EACH") if parser.expect_optional("ROW"): trigger.forEachRow = True elif parser.expect_optional("STATEMENT"): trigger.forEachRow = False else: parser.throw_unsupported_command() if parser.expect_optional("WHEN"): parser.expect("(") trigger.when = parser.get_expression() parser.expect(")") parser.expect("EXECUTE", "PROCEDURE") trigger.function = parser.get_rest() ignoreSlonyTrigger = ignoreSlonyTriggers and ("_slony_logtrigger" == trigger.name or "_slony_denyaccess" == trigger.name) if (not ignoreSlonyTrigger): schema = database.getSchema(ParserUtils.get_schema_name(trigger.tableName, database)) container = schema.tables.get(trigger.tableName) if not container: container = schema.views.get(trigger.tableName) if container: container.triggers[trigger.name] = trigger else: raise Exception()
def parse(database, statement): parser = Parser(statement) parser.expect("CREATE") parser.expect_optional("OR", "REPLACE") parser.expect("FUNCTION") functionName = parser.parse_identifier(); schemaName = ParserUtils.get_schema_name(functionName, database) schema = database.getSchema(schemaName) if schema is None: raise Exception("Cannot find schema '%s' for statement '%s'. Missing CREATE SCHEMA statement?" % (schemaName, statement)) function = PgFunction() function.name = ParserUtils.get_object_name(functionName) parser.expect("(") while not parser.expect_optional(")"): mode = None if parser.expect_optional("IN"): mode = "IN" elif parser.expect_optional("OUT"): mode = "OUT" elif parser.expect_optional("INOUT"): mode = "INOUT" elif parser.expect_optional("VARIADIC"): mode = "VARIADIC" position = parser.position argumentName = None dataType = parser.parse_data_type() position2 = parser.position if (not parser.expect_optional(")") and not parser.expect_optional(",") and not parser.expect_optional("=") and not parser.expect_optional("DEFAULT")): parser.position = position argumentName = ParserUtils.get_object_name(parser.parse_identifier()) dataType = parser.parse_data_type() else: parser.position = position2 defaultExpression = '' if (parser.expect_optional("=") or parser.expect_optional("DEFAULT")): defaultExpression = parser.get_expression() else: defaultExpression = None argument = Argument() argument.dataType = dataType argument.defaultExpression = defaultExpression argument.mode = mode argument.name = argumentName function.addArgument(argument) if (parser.expect_optional(")")): break else: parser.expect(",") function.body = parser.get_rest() schema.addFunction(function)
def parse(database, statement): parser = Parser(statement) parser.expect("CREATE") parser.expect_optional("OR", "REPLACE") parser.expect("FUNCTION") functionName = parser.parse_identifier() schemaName = ParserUtils.get_schema_name(functionName, database) schema = database.getSchema(schemaName) if schema is None: raise Exception( "Cannot find schema '%s' for statement '%s'. Missing CREATE SCHEMA statement?" % (schemaName, statement)) function = PgFunction() function.name = ParserUtils.get_object_name(functionName) parser.expect("(") while not parser.expect_optional(")"): mode = None if parser.expect_optional("IN"): mode = "IN" elif parser.expect_optional("OUT"): mode = "OUT" elif parser.expect_optional("INOUT"): mode = "INOUT" elif parser.expect_optional("VARIADIC"): mode = "VARIADIC" position = parser.position argumentName = None dataType = parser.parse_data_type() position2 = parser.position if (not parser.expect_optional(")") and not parser.expect_optional(",") and not parser.expect_optional("=") and not parser.expect_optional("DEFAULT")): parser.position = position argumentName = ParserUtils.get_object_name( parser.parse_identifier()) dataType = parser.parse_data_type() else: parser.position = position2 defaultExpression = '' if (parser.expect_optional("=") or parser.expect_optional("DEFAULT")): defaultExpression = parser.get_expression() else: defaultExpression = None argument = Argument() argument.dataType = dataType argument.defaultExpression = defaultExpression argument.mode = mode argument.name = argumentName function.addArgument(argument) if (parser.expect_optional(")")): break else: parser.expect(",") function.body = parser.get_rest() schema.addFunction(function)