quaerateum/docs/lifecycle-hooks.md

Simple typescript ORM for node.js based on data-mapper, unit-of-work and identity-map patterns. Supports MongoDB, MySQL, PostgreSQL and SQLite databases as well as usage with vanilla JS.

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# Lifecycle hooks

You can use lifecycle hooks to run some code when entity gets persisted. You can mark any of
entity methods with them, you can also mark multiple methods with same hook.

All hooks support async methods.

- `@BeforeCreate()` and `@BeforeUpdate()` is fired right before we persist the entity in database

- `@AfterCreate()` and `@AfterUpdate()` is fired right after the entity is updated in database and 
merged to identity map. Since this event entity will have reference to `EntityManager` and will be 
enabled to call `entity.init()` method (including all entity references and collections).

- `@BeforeDelete()` is fired right before we delete the record from database. It is fired only when
removing entity or entity reference, not when deleting records by query. 

- `@AfterDelete()` is fired right after the record gets deleted from database and it is unset from 
the identity map.

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