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faster inserts

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Athou
2013-03-25 23:33:06 +01:00
parent ef209ea321
commit def27c5f9f
2 changed files with 32 additions and 7 deletions
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32
src/main/java/com/commafeed/backend/dao/FeedEntryService.java
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@@ -8,11 +8,14 @@ import javax.ejb.Stateless;
import javax.inject.Inject; import javax.inject.Inject;
import javax.persistence.TypedQuery; import javax.persistence.TypedQuery;
import org.apache.commons.lang.StringUtils;
import com.commafeed.backend.model.Feed; import com.commafeed.backend.model.Feed;
import com.commafeed.backend.model.FeedEntry; import com.commafeed.backend.model.FeedEntry;
import com.commafeed.backend.model.User; import com.commafeed.backend.model.User;
import com.commafeed.frontend.utils.ModelFactory.MF; import com.commafeed.frontend.utils.ModelFactory.MF;
import com.google.common.collect.Iterables; import com.google.common.collect.Iterables;
import com.google.common.collect.Lists;
@Stateless @Stateless
@SuppressWarnings("serial") @SuppressWarnings("serial")
@@ -25,18 +28,37 @@ public class FeedEntryService extends GenericDAO<FeedEntry, Long> {
Feed feed = Iterables.getFirst( Feed feed = Iterables.getFirst(
feedService.findByField(MF.i(MF.p(Feed.class).getUrl()), url), feedService.findByField(MF.i(MF.p(Feed.class).getUrl()), url),
null); null);
List<String> guids = Lists.newArrayList();
for (FeedEntry entry : entries) { for (FeedEntry entry : entries) {
FeedEntry existing = Iterables.getFirst( guids.add(entry.getGuid());
findByField(MF.i(MF.p(getType()).getGuid()), }
entry.getGuid()), null);
if (existing == null) { List<FeedEntry> existingEntries = getByGuids(guids);
for (FeedEntry entry : entries) {
boolean found = false;
for (FeedEntry existingEntry : existingEntries) {
if (StringUtils
.equals(entry.getGuid(), existingEntry.getGuid())) {
found = true;
break;
}
}
if (!found) {
entry.setFeed(feed); entry.setFeed(feed);
save(entry); save(entry);
} }
} }
feed.setLastUpdated(Calendar.getInstance().getTime()); feed.setLastUpdated(Calendar.getInstance().getTime());
feed.setMessage(null); feed.setMessage(null);
em.merge(feed); feedService.update(feed);
}
public List<FeedEntry> getByGuids(List<String> guids) {
TypedQuery<FeedEntry> query = em.createNamedQuery("Entry.byGuids",
FeedEntry.class);
query.setParameter("guids", guids);
return query.getResultList();
} }
public List<FeedEntry> getEntries(Feed feed, User user, boolean read) { public List<FeedEntry> getEntries(Feed feed, User user, boolean read) {

7
src/main/resources/META-INF/orm.xml
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@@ -1,10 +1,13 @@
<?xml version="1.0" encoding="UTF-8"?> <?xml version="1.0" encoding="UTF-8"?>
<entity-mappings version="2.0" xmlns="http://java.sun.com/xml/ns/persistence/orm" <entity-mappings version="2.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/persistence/orm" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation=" xsi:schemaLocation="
http://java.sun.com/xml/ns/persistence/orm http://java.sun.com/xml/ns/persistence/orm
http://java.sun.com/xml/ns/persistence/orm_2_0.xsd"> http://java.sun.com/xml/ns/persistence/orm_2_0.xsd">
<named-query name="Entry.byGuids">
<query>select e from FeedEntry e where e.guid in :guids</query>
</named-query>
<named-query name="Entry.unreadByFeed"> <named-query name="Entry.unreadByFeed">
<query>select e from FeedEntry e where e.feed=:feed and not exists (select s from FeedEntryStatus s where s.entry = e and s.user =:user and s.read=true)</query> <query>select e from FeedEntry e where e.feed=:feed and not exists (select s from FeedEntryStatus s where s.entry = e and s.user =:user and s.read=true)</query>
</named-query> </named-query>