You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
64 lines
1.2 KiB
64 lines
1.2 KiB
import { TransactionManager } from "./transaction_manager.mjs"; |
|
|
|
|
|
export class Database { |
|
constructor(dbName, adapter) { |
|
this.dbName = dbName; |
|
this.adapter = adapter; |
|
this.version = null; |
|
this.path = null; |
|
|
|
this.transactionManager = new TransactionManager(dbName, this.adapter); |
|
} |
|
|
|
async open() { |
|
let response = await this.adapter.open(this.dbName); |
|
|
|
if (response) { |
|
if (response.hasOwnProperty('version')) { |
|
this.version = response.version; |
|
} |
|
if (response.hasOwnProperty('path')) { |
|
this.path = response.path; |
|
} |
|
} |
|
|
|
// Allow chaining |
|
return this; |
|
} |
|
|
|
close() { |
|
return this.adapter.close(this.dbName); |
|
} |
|
|
|
transaction() { |
|
return this.transactionManager.transaction(); |
|
} |
|
|
|
|
|
async autoTransaction(cb, inheritTx) { |
|
let tx = inheritTx || this.transaction(); |
|
let result; |
|
|
|
try { |
|
result = await cb(tx); |
|
} catch (e) { |
|
if (!inheritTx) { |
|
await tx.rollback(); |
|
} |
|
throw e; |
|
} |
|
|
|
if (!inheritTx) { |
|
await tx.commit(); |
|
} |
|
|
|
return result; |
|
} |
|
|
|
|
|
// Helper method to start a transaction and execute a single SQL statement |
|
sql(sql, ...args) { |
|
return this.autoTransaction((tx) => tx.sql(sql, ...args)); |
|
} |
|
} |