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hydrogen-web/src/storage/idb/transaction.js

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2019-02-05 04:51:50 +05:30
import {txnAsPromise} from "./utils";
import Store from "./store.js";
import TimelineStore from "./stores/timeline.js";
export default class Transaction {
constructor(txn, allowedStoreNames) {
this._txn = txn;
this._allowedStoreNames = allowedStoreNames;
this._stores = {
sync: null,
summary: null,
timeline: null,
state: null,
};
}
_store(name) {
if (!this._allowedStoreNames.includes(name)) {
// more specific error? this is a bug, so maybe not ...
throw new Error(`Invalid store for transaction: ${name}, only ${this._allowedStoreNames.join(", ")} are allowed.`);
}
return new Store(this._txn.getObjectStore(name));
}
get timeline() {
if (!this._stores.timeline) {
const idbStore = this._idbStore("timeline");
this._stores.timeline = new TimelineStore(idbStore);
}
return this._stores.timeline;
}
complete() {
return txnAsPromise(this._txn);
}
abort() {
this._txn.abort();
}
}