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Optimize subscriptions query, by using Criteria API. (#200)

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Kavin 2022-02-24 12:32:39 +00:00 • committed by GitHub
parent 78082742ad
commit 014c9533c8
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1 changed files with 14 additions and 8 deletions
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22
src/main/java/me/kavin/piped/utils/ResponseHelper.java
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@ -930,22 +930,28 @@ public class ResponseHelper {
Session s = DatabaseSessionFactory.createSession();
User user = DatabaseHelper.getUserFromSessionWithSubscribed(s, session);
User user = DatabaseHelper.getUserFromSession(s, session);
if (user != null) {
List<SubscriptionChannel> subscriptionItems = new ObjectArrayList<>();
if (user.getSubscribed() != null && !user.getSubscribed().isEmpty()) {
CriteriaBuilder cb = s.getCriteriaBuilder();
var query = cb.createQuery(me.kavin.piped.utils.obj.db.Channel.class);
var root = query.from(me.kavin.piped.utils.obj.db.Channel.class);
var userRoot = query.from(User.class);
query.select(root);
query.where(cb.and(
cb.isMember(root.get("uploader_id"), userRoot.<Collection<String>>get("subscribed_ids")),
cb.equal(userRoot.get("id"), user.getId())
));
List<me.kavin.piped.utils.obj.db.Channel> channels = DatabaseHelper.getChannelFromIds(s,
user.getSubscribed());
var channels = s.createQuery(query).list();
channels.forEach(channel -> subscriptionItems.add(new SubscriptionChannel("/channel/" + channel.getUploaderId(),
channel.getUploader(), rewriteURL(channel.getUploaderAvatar()), channel.isVerified())));
channels.forEach(channel -> subscriptionItems.add(new SubscriptionChannel("/channel/" + channel.getUploaderId(),
channel.getUploader(), rewriteURL(channel.getUploaderAvatar()), channel.isVerified())));
subscriptionItems.sort(Comparator.comparing(o -> o.name));
}
subscriptionItems.sort(Comparator.comparing(o -> o.name));
s.close();