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LehaColumnsHandler Class — drizzle-orm Architecture

Architecture documentation for the LehaColumnsHandler class in simulator.ts from the drizzle-orm codebase.

Class typescript

Entity Profile

Dependency Diagram

graph TD
  e3c6d246_a166_e454_1997_ee9037066507["LehaColumnsHandler"]
  76541fe4_0f6b_65f6_219e_1aaf98848155["simulator.ts"]
  e3c6d246_a166_e454_1997_ee9037066507 -->|defined in| 76541fe4_0f6b_65f6_219e_1aaf98848155
  da935ebb_05f5_14c4_e8b9_2323299b576d["can()"]
  e3c6d246_a166_e454_1997_ee9037066507 -->|method| da935ebb_05f5_14c4_e8b9_2323299b576d
  c2b0a5f5_3499_ffea_4200_69e7b5a36c34["handle()"]
  e3c6d246_a166_e454_1997_ee9037066507 -->|method| c2b0a5f5_3499_ffea_4200_69e7b5a36c34

Relationship Graph

Source Code

drizzle-kit/src/simulator.ts lines 87–99

class LehaColumnsHandler<T extends Named> implements ColumnsHandler<T> {
	can(tableName: string, _: T[], __: T[]): boolean {
		return tableName === 'users';
	}

	handle(
		tableName: string,
		added: T[],
		removed: T[],
	): { tableName: string; created: T[]; deleted: T[]; renamed: { from: T; to: T }[] } {
		return { tableName, created: [], deleted: [], renamed: [{ from: removed[0], to: added[0] }] };
	}
}

Defined In

Source

Frequently Asked Questions

What is the LehaColumnsHandler class?
LehaColumnsHandler is a class in the drizzle-orm codebase, defined in drizzle-kit/src/simulator.ts.
Where is LehaColumnsHandler defined?
LehaColumnsHandler is defined in drizzle-kit/src/simulator.ts at line 87.

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