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30 lines
801 B
30 lines
801 B
3 years ago
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import { TransactionManager } from "./transaction_manager.mjs";
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export class DatabaseWrapper {
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constructor(dbName, version) {
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this.name = dbName;
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this.db = openDatabase(this.name, version, "", 5 * 1024 * 1024);
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this.transManager = new TransactionManager(this.db);
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}
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sql(sql, ...args) {
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const reg = /^\s*(BEGIN|END|COMMIT|ROLLBACK)(?:[^A-Z]|$)/i;
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const match = reg.exec(sql);
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if (match) {
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const statement = match[1].toUpperCase();
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switch(statement) {
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case "BEGIN":
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return this.transManager.begin();
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case "END":
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case "COMMIT":
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return this.transManager.commit();
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case "ROLLBACK":
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return this.transManager.rollback();
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}
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} else {
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return this.transManager.sql(sql, args);
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}
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}
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}
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