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typeorm

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Data-Mapper ORM for TypeScript, ES7, ES6, ES5. Supports MySQL, PostgreSQL, MariaDB, SQLite, MS SQL Server, Oracle, MongoDB databases.

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import { DataSource } from "../data-source/DataSource"; import { SchemaBuilder } from "./SchemaBuilder"; import { SqlInMemory } from "../driver/SqlInMemory"; /** * Creates complete tables schemas in the database based on the entity metadatas. * * Steps how schema is being built: * 1. load list of all tables with complete column and keys information from the db * 2. drop all (old) foreign keys that exist in the table, but does not exist in the metadata * 3. create new tables that does not exist in the db, but exist in the metadata * 4. drop all columns exist (left old) in the db table, but does not exist in the metadata * 5. add columns from metadata which does not exist in the table * 6. update all exist columns which metadata has changed * 7. update primary keys - update old and create new primary key from changed columns * 8. create foreign keys which does not exist in the table yet * 9. create indices which are missing in db yet, and drops indices which exist in the db, but does not exist in the metadata anymore */ export declare class MongoSchemaBuilder implements SchemaBuilder { protected connection: DataSource; constructor(connection: DataSource); /** * Creates complete schemas for the given entity metadatas. */ build(): Promise<void>; /** * Returns query to be executed by schema builder. */ log(): Promise<SqlInMemory>; }