Browse Source

Optimize count queries for pagination

pull/6/head
Menci 6 years ago
parent
commit
8515b33664
  1. 7
      models/common.ts
  2. 4
      modules/contest.js
  3. 6
      modules/discussion.js
  4. 4
      modules/problem.js
  5. 2
      modules/user.js

7
models/common.ts

@ -26,6 +26,13 @@ export default class Model extends TypeORM.BaseEntity {
)[0]['COUNT(*)']);
}
static async countForPagination(where) {
const queryBuilder = where instanceof TypeORM.SelectQueryBuilder
? where
: this.createQueryBuilder().where(where);
return await queryBuilder.getCount();
}
static async queryAll(queryBuilder) {
return await queryBuilder.getMany();
}

4
modules/contest.js

@ -14,7 +14,7 @@ app.get('/contests', async (req, res) => {
if (res.locals.user && res.locals.user.is_admin) where = {}
else where = { is_public: true };
let paginate = syzoj.utils.paginate(await Contest.count(where), req.query.page, syzoj.config.page.contest);
let paginate = syzoj.utils.paginate(await Contest.countForPagination(where), req.query.page, syzoj.config.page.contest);
let contests = await Contest.queryPage(paginate, where, {
start_time: 'DESC'
});
@ -369,7 +369,7 @@ app.get('/contest/:id/submissions', async (req, res) => {
query.andWhere('type = 1')
.andWhere('type_info = :contest_id', { contest_id });
let paginate = syzoj.utils.paginate(await JudgeState.countQuery(query), req.query.page, syzoj.config.page.judge_state);
let paginate = syzoj.utils.paginate(await JudgeState.countForPagination(query), req.query.page, syzoj.config.page.judge_state);
let judge_state = await JudgeState.queryPage(paginate, query, {
submit_time: 'DESC'
});

6
modules/discussion.js

@ -16,7 +16,7 @@ app.get('/discussion/:type?', async (req, res) => {
} else {
where = { problem_id: null };
}
let paginate = syzoj.utils.paginate(await Article.count(where), req.query.page, syzoj.config.page.discussion);
let paginate = syzoj.utils.paginate(await Article.countForPagination(where), req.query.page, syzoj.config.page.discussion);
let articles = await Article.queryPage(paginate, where, {
sort_time: 'DESC'
});
@ -52,7 +52,7 @@ app.get('/discussion/problem/:pid', async (req, res) => {
}
let where = { problem_id: pid };
let paginate = syzoj.utils.paginate(await Article.count(where), req.query.page, syzoj.config.page.discussion);
let paginate = syzoj.utils.paginate(await Article.countForPagination(where), req.query.page, syzoj.config.page.discussion);
let articles = await Article.queryPage(paginate, where, {
sort_time: 'DESC'
});
@ -85,7 +85,7 @@ app.get('/article/:id', async (req, res) => {
article.content = await syzoj.utils.markdown(article.content);
let where = { article_id: id };
let commentsCount = await ArticleComment.count(where);
let commentsCount = await ArticleComment.countForPagination(where);
let paginate = syzoj.utils.paginate(commentsCount, req.query.page, syzoj.config.page.article_comment);
let comments = await ArticleComment.queryPage(paginate, where, {

4
modules/problem.js

@ -35,7 +35,7 @@ app.get('/problems', async (req, res) => {
query.orderBy(sort, order.toUpperCase());
}
let paginate = syzoj.utils.paginate(await Problem.countQuery(query), req.query.page, syzoj.config.page.problem);
let paginate = syzoj.utils.paginate(await Problem.countForPagination(query), req.query.page, syzoj.config.page.problem);
let problems = await Problem.queryPage(paginate, query);
await problems.forEachAsync(async problem => {
@ -98,7 +98,7 @@ app.get('/problems/search', async (req, res) => {
query.addOrderBy(sort, order.toUpperCase());
}
let paginate = syzoj.utils.paginate(await Problem.countQuery(query), req.query.page, syzoj.config.page.problem);
let paginate = syzoj.utils.paginate(await Problem.countForPagination(query), req.query.page, syzoj.config.page.problem);
let problems = await Problem.queryPage(paginate, query);
await problems.forEachAsync(async problem => {

2
modules/user.js

@ -12,7 +12,7 @@ app.get('/ranklist', async (req, res) => {
if (!['ac_num', 'rating', 'id', 'username'].includes(sort) || !['asc', 'desc'].includes(order)) {
throw new ErrorMessage('错误的排序参数。');
}
let paginate = syzoj.utils.paginate(await User.count({ is_show: true }), req.query.page, syzoj.config.page.ranklist);
let paginate = syzoj.utils.paginate(await User.countForPagination({ is_show: true }), req.query.page, syzoj.config.page.ranklist);
let ranklist = await User.queryPage(paginate, { is_show: true }, { [sort]: order.toUpperCase() });
await ranklist.forEachAsync(async x => x.renderInformation());

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