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queries optimization

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Athou
2013-04-07 16:19:35 +02:00
parent f7e636d105
commit 55801d914f
5 changed files with 44 additions and 14 deletions
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9
src/main/java/com/commafeed/backend/dao/FeedEntryService.java
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@@ -3,6 +3,7 @@ package com.commafeed.backend.dao;
import java.util.Calendar;
import java.util.Collection;
import java.util.List;
import java.util.Set;
import javax.ejb.Stateless;
import javax.inject.Inject;
@@ -21,6 +22,7 @@ import com.commafeed.backend.model.extended.FeedEntryWithStatus;
import com.commafeed.frontend.utils.ModelFactory.MF;
import com.google.common.collect.Iterables;
import com.google.common.collect.Lists;
import com.google.common.collect.Sets;
@Stateless
@SuppressWarnings("serial")
@@ -188,13 +190,14 @@ public class FeedEntryService extends GenericDAO<FeedEntry> {
@SuppressWarnings("rawtypes")
private List<FeedEntryWithStatus> buildList(List list) {
List<FeedEntryWithStatus> result = Lists.newArrayList();
Set<FeedEntryWithStatus> result = Sets.newLinkedHashSet();
for (Object object : list) {
Object[] array = (Object[]) object;
FeedEntry entry = (FeedEntry) array[0];
FeedEntryStatus status = (FeedEntryStatus) array[1];
result.add(new FeedEntryWithStatus(entry, status));
FeedEntryWithStatus fews = new FeedEntryWithStatus(entry, status);
result.add(fews);
}
return result;
return Lists.newArrayList(result);
}
}

3
src/main/java/com/commafeed/backend/model/FeedEntry.java
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@@ -5,7 +5,6 @@ import java.util.Set;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.JoinColumn;
import javax.persistence.JoinTable;
import javax.persistence.Lob;
@@ -27,7 +26,7 @@ public class FeedEntry extends AbstractModel {
@Column(length = 2048, nullable = false)
private String guid;
@ManyToMany(fetch = FetchType.EAGER)
@ManyToMany
@JoinTable(name = "FEED_FEEDENTRIES", joinColumns = { @JoinColumn(name = "FEED_ID", nullable = false, updatable = false) }, inverseJoinColumns = { @JoinColumn(name = "FEEDENTRY_ID", nullable = false, updatable = false) })
private Set<Feed> feeds = Sets.newHashSet();

28
src/main/java/com/commafeed/backend/model/extended/FeedEntryWithStatus.java
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@@ -1,5 +1,8 @@
package com.commafeed.backend.model.extended;
import org.apache.commons.lang.builder.EqualsBuilder;
import org.apache.commons.lang.builder.HashCodeBuilder;
import com.commafeed.backend.model.FeedEntry;
import com.commafeed.backend.model.FeedEntryStatus;
@@ -12,6 +15,31 @@ public class FeedEntryWithStatus {
this.status = status;
}
@Override
public int hashCode() {
return new HashCodeBuilder(17, 37).append(entry.getId())
.append(status == null ? null : status.getId()).toHashCode();
}
@Override
public boolean equals(Object obj) {
if (obj == null) {
return false;
}
if (obj == this) {
return true;
}
if (obj.getClass() != getClass()) {
return false;
}
FeedEntryWithStatus rhs = (FeedEntryWithStatus) obj;
return new EqualsBuilder()
.append(status == null ? null : status.getId(),
rhs.status == null ? null : rhs.status.getId())
.append(entry.getId(), rhs.entry.getId()).isEquals();
}
public FeedEntry getEntry() {
return entry;
}