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@@ -1,5 +1,5 @@
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//const _ = require('lodash');
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-
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+const HeavyCalc = require('./HeavyCalc');
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const utils = require('./utils');
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const maxMemCacheSize = 100;
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@@ -18,6 +18,8 @@ class DbSearcher {
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this.timer = null;
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this.closed = false;
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+ this.heavyCalc = new HeavyCalc({threads: 4});
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+
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this.searchCache = {
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memCache: new Map(),
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authorIdsAll: false,
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@@ -108,7 +110,7 @@ class DbSearcher {
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`
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});
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- idsArr.push(new Set(seriesRows[0].rawResult));
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+ idsArr.push(seriesRows[0].rawResult);
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}
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//названия
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@@ -132,7 +134,7 @@ class DbSearcher {
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`
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});
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- idsArr.push(new Set(titleRows[0].rawResult));
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+ idsArr.push(titleRows[0].rawResult);
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//чистки памяти при тяжелых запросах
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if (this.config.lowMemoryMode && query.title[0] == '*') {
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@@ -167,7 +169,7 @@ class DbSearcher {
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`
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});
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- idsArr.push(new Set(genreRows[0].rawResult));
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+ idsArr.push(genreRows[0].rawResult);
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}
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//языки
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@@ -195,17 +197,75 @@ class DbSearcher {
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`
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});
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- idsArr.push(new Set(langRows[0].rawResult));
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+ idsArr.push(langRows[0].rawResult);
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}
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- if (idsArr.length) {
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- //ищем пересечение множеств
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- idsArr.push(new Set(authorIds));
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- authorIds = Array.from(utils.intersectSet(idsArr));
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+/*
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+ //ищем пересечение множеств
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+ idsArr.push(authorIds);
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+
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+ if (idsArr.length > 1) {
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+ const idsSetArr = idsArr.map(ids => new Set(ids));
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+ authorIds = Array.from(utils.intersectSet(idsSetArr));
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}
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//сортировка
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authorIds.sort((a, b) => a - b);
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+*/
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+ //ищем пересечение множеств в отдельном потоке
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+ idsArr.push(authorIds);
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+ authorIds = await this.heavyCalc.run({
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+ args: idsArr,
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+ fn: (args) => {
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+ //из utils.intersectSet
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+ const intersectSet = (arrSet) => {
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+ if (!arrSet.length)
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+ return new Set();
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+
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+ let min = 0;
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+ let size = arrSet[0].size;
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+ for (let i = 1; i < arrSet.length; i++) {
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+ if (arrSet[i].size < size) {
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+ min = i;
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+ size = arrSet[i].size;
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+ }
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+ }
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+
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+ const result = new Set();
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+ for (const elem of arrSet[min]) {
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+ let inAll = true;
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+ for (let i = 0; i < arrSet.length; i++) {
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+ if (i === min)
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+ continue;
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+ if (!arrSet[i].has(elem)) {
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+ inAll = false;
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+ break;
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+ }
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+ }
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+
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+ if (inAll)
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+ result.add(elem);
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+ }
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+
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+ return result;
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+ };
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+
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+ //считаем пересечение, если надо
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+ let result = [];
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+
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+ if (args.length > 1) {
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+ const arrSet = args.map(ids => new Set(ids));
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+ result = Array.from(intersectSet(arrSet));
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+ } else if (args.length == 1) {
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+ result = args[0];
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+ }
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+
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+ //сортировка
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+ result.sort((a, b) => a - b);
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+
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+ return result;
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+ }
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+ });
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return authorIds;
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}
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