SQL

Module: implementation.datasources.db

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SQLAction

SQL action without returns. Expected that this action will execute statements that don't return data from DB.

Subclass of Action. Type of Action[Dict[str, Any], None]

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__init__

Arguments:

• session (SQLSessionFactory): Session to use.

• name (Optional[str], optional): Name for identification. If equals to None, class name will be used. Defaults to None.

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execute

Arguments:

• input_data (Dict[str, Any]): Expected keys:

  • "statement" (Any): SQLAlchemy statement.
  • "kwargs" (Dict[str, Any], optional): Extra arguments.

In details about statements, see:

SQL Statements and Expressions API — SQLAlchemy 2.0 Documentation

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SQLActionWithReturns

SQL action with returns. Subclass of Action. Type of Action[Dict[str, Any], Any]

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__init__

Arguments:

• session (SQLSessionFactory): Session to use.
• name (Optional[str], optional): Name for identification. If equals to None, class name will be used. Defaults to None.

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execute

Arguments:

• input_data (Dict[str, Any]): Expected keys:

  • "statement" (Any): SQLAlchemy statement.
  • "kwargs" (Dict[str, Any], optional): Extra arguments.

Returns:

• List[Any]: Result of query.

In details about statements, see:

SQL Statements and Expressions API — SQLAlchemy 2.0 Documentation

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SQLSessionFactory

Sessions manager

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__init__

Arguments:

• url (str): connection URL of the DB.

• echo (bool, optional): If equals to True, logs debug info. Defaults to False.

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create

Create session

Returns:

• Session

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close_all

Close all sessions

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create_tables

Create all tables

Arguments:

• tables_class (Type[DeclarativeBase], optional): Base class of tables that will be used to trigger creation. Defaults to BaseModel.

See more:

ORM Quick Start — SQLAlchemy 2.0 Documentation

ORM Mapped Class Overview — SQLAlchemy 2.0 Documentation

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BaseModel

Default base class for tables models. Subclass of DeclarativeBase.

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