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30 lines
801 B
30 lines
801 B
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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} |