mirror of
https://github.com/Athou/commafeed.git
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301 lines
11 KiB
Java
301 lines
11 KiB
Java
package com.commafeed.backend.dao;
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import java.util.Comparator;
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import java.util.Date;
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import java.util.List;
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import java.util.Map;
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import javax.ejb.Stateless;
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import javax.inject.Inject;
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import javax.persistence.Query;
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import javax.persistence.TypedQuery;
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import javax.persistence.criteria.CriteriaQuery;
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import javax.persistence.criteria.Path;
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import javax.persistence.criteria.Predicate;
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import javax.persistence.criteria.Root;
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import org.apache.commons.lang.StringUtils;
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import org.apache.commons.lang3.ObjectUtils;
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import org.hibernate.Criteria;
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import org.hibernate.criterion.Disjunction;
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import org.hibernate.criterion.MatchMode;
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import org.hibernate.criterion.Order;
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import org.hibernate.criterion.ProjectionList;
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import org.hibernate.criterion.Projections;
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import org.hibernate.criterion.Restrictions;
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import org.hibernate.sql.JoinType;
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import org.hibernate.transform.Transformers;
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import com.commafeed.backend.FixedSizeSortedSet;
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import com.commafeed.backend.model.FeedEntry;
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import com.commafeed.backend.model.FeedEntryContent_;
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import com.commafeed.backend.model.FeedEntryStatus;
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import com.commafeed.backend.model.FeedEntryStatus_;
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import com.commafeed.backend.model.FeedEntry_;
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import com.commafeed.backend.model.FeedSubscription;
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import com.commafeed.backend.model.Models;
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import com.commafeed.backend.model.User;
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import com.commafeed.backend.model.UserSettings.ReadingOrder;
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import com.commafeed.backend.services.ApplicationSettingsService;
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import com.commafeed.frontend.model.UnreadCount;
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import com.google.common.collect.Iterables;
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import com.google.common.collect.Lists;
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@Stateless
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public class FeedEntryStatusDAO extends GenericDAO<FeedEntryStatus> {
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private static final String ALIAS_STATUS = "status";
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private static final String ALIAS_ENTRY = "entry";
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private static final Comparator<FeedEntryStatus> STATUS_COMPARATOR_DESC = new Comparator<FeedEntryStatus>() {
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@Override
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public int compare(FeedEntryStatus o1, FeedEntryStatus o2) {
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return ObjectUtils.compare(o2.getEntryUpdated(), o1.getEntryUpdated());
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};
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};
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private static final Comparator<FeedEntryStatus> STATUS_COMPARATOR_ASC = new Comparator<FeedEntryStatus>() {
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@Override
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public int compare(FeedEntryStatus o1, FeedEntryStatus o2) {
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return ObjectUtils.compare(o1.getEntryUpdated(), o2.getEntryUpdated());
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};
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};
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@Inject
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ApplicationSettingsService applicationSettingsService;
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public FeedEntryStatus getStatus(FeedSubscription sub, FeedEntry entry) {
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CriteriaQuery<FeedEntryStatus> query = builder.createQuery(getType());
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Root<FeedEntryStatus> root = query.from(getType());
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Predicate p1 = builder.equal(root.get(FeedEntryStatus_.entry), entry);
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Predicate p2 = builder.equal(root.get(FeedEntryStatus_.subscription), sub);
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query.where(p1, p2);
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List<FeedEntryStatus> statuses = em.createQuery(query).getResultList();
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FeedEntryStatus status = Iterables.getFirst(statuses, null);
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return handleStatus(status, sub, entry);
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}
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private FeedEntryStatus handleStatus(FeedEntryStatus status, FeedSubscription sub, FeedEntry entry) {
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if (status == null) {
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Date unreadThreshold = applicationSettingsService.getUnreadThreshold();
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boolean read = unreadThreshold == null ? false : entry.getUpdated().before(unreadThreshold);
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status = new FeedEntryStatus(sub.getUser(), sub, entry);
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status.setRead(read);
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status.setMarkable(!read);
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} else {
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status.setMarkable(true);
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}
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return status;
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}
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public List<FeedEntryStatus> findStarred(User user, Date newerThan, int offset, int limit, ReadingOrder order, boolean includeContent) {
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CriteriaQuery<FeedEntryStatus> query = builder.createQuery(getType());
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Root<FeedEntryStatus> root = query.from(getType());
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List<Predicate> predicates = Lists.newArrayList();
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predicates.add(builder.equal(root.get(FeedEntryStatus_.user), user));
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predicates.add(builder.equal(root.get(FeedEntryStatus_.starred), true));
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query.where(predicates.toArray(new Predicate[0]));
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if (newerThan != null) {
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predicates.add(builder.greaterThanOrEqualTo(root.get(FeedEntryStatus_.entryInserted), newerThan));
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}
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orderStatusesBy(query, root, order);
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TypedQuery<FeedEntryStatus> q = em.createQuery(query);
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limit(q, offset, limit);
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setTimeout(q);
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List<FeedEntryStatus> statuses = q.getResultList();
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for (FeedEntryStatus status : statuses) {
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status = handleStatus(status, status.getSubscription(), status.getEntry());
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}
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return lazyLoadContent(includeContent, statuses);
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}
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private Criteria buildSearchCriteria(FeedSubscription sub, boolean unreadOnly, String keywords, Date newerThan, int offset, int limit,
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ReadingOrder order, Date last) {
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Criteria criteria = getSession().createCriteria(FeedEntry.class, ALIAS_ENTRY);
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criteria.add(Restrictions.eq(FeedEntry_.feed.getName(), sub.getFeed()));
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if (keywords != null) {
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Criteria contentJoin = criteria.createCriteria(FeedEntry_.content.getName(), "content", JoinType.INNER_JOIN);
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for (String keyword : StringUtils.split(keywords)) {
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Disjunction or = Restrictions.disjunction();
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or.add(Restrictions.ilike(FeedEntryContent_.content.getName(), keyword, MatchMode.ANYWHERE));
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or.add(Restrictions.ilike(FeedEntryContent_.title.getName(), keyword, MatchMode.ANYWHERE));
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contentJoin.add(or);
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}
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}
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Criteria statusJoin = criteria.createCriteria(FeedEntry_.statuses.getName(), ALIAS_STATUS, JoinType.LEFT_OUTER_JOIN,
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Restrictions.eq(FeedEntryStatus_.subscription.getName(), sub));
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if (unreadOnly) {
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Disjunction or = Restrictions.disjunction();
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or.add(Restrictions.isNull(FeedEntryStatus_.read.getName()));
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or.add(Restrictions.eq(FeedEntryStatus_.read.getName(), false));
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statusJoin.add(or);
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Date unreadThreshold = applicationSettingsService.getUnreadThreshold();
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if (unreadThreshold != null) {
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criteria.add(Restrictions.ge(FeedEntry_.updated.getName(), unreadThreshold));
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}
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}
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if (newerThan != null) {
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criteria.add(Restrictions.ge(FeedEntry_.inserted.getName(), newerThan));
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}
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if (last != null) {
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if (order == ReadingOrder.desc) {
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criteria.add(Restrictions.gt(FeedEntry_.updated.getName(), last));
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} else {
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criteria.add(Restrictions.lt(FeedEntry_.updated.getName(), last));
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}
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}
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if (order != null) {
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Order o = null;
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if (order == ReadingOrder.asc) {
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o = Order.asc(FeedEntry_.updated.getName());
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} else {
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o = Order.desc(FeedEntry_.updated.getName());
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}
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criteria.addOrder(o);
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}
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if (offset > -1) {
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criteria.setFirstResult(offset);
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}
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if (limit > -1) {
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criteria.setMaxResults(limit);
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}
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int timeout = applicationSettingsService.get().getQueryTimeout();
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if (timeout > 0) {
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// hibernate timeout is in seconds, jpa timeout is in millis
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criteria.setTimeout(timeout / 1000);
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}
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return criteria;
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}
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@SuppressWarnings("unchecked")
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public List<FeedEntryStatus> findBySubscriptions(List<FeedSubscription> subs, boolean unreadOnly, String keywords, Date newerThan,
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int offset, int limit, ReadingOrder order, boolean includeContent, boolean onlyIds) {
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int capacity = offset + limit;
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Comparator<FeedEntryStatus> comparator = order == ReadingOrder.desc ? STATUS_COMPARATOR_DESC : STATUS_COMPARATOR_ASC;
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FixedSizeSortedSet<FeedEntryStatus> set = new FixedSizeSortedSet<FeedEntryStatus>(capacity, comparator);
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for (FeedSubscription sub : subs) {
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Date last = (order != null && set.isFull()) ? set.last().getEntryUpdated() : null;
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Criteria criteria = buildSearchCriteria(sub, unreadOnly, keywords, newerThan, -1, capacity, order, last);
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ProjectionList projection = Projections.projectionList();
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projection.add(Projections.property("id"), "id");
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projection.add(Projections.property("updated"), "updated");
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projection.add(Projections.property(ALIAS_STATUS + ".id"), "status_id");
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criteria.setProjection(projection);
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criteria.setResultTransformer(Transformers.ALIAS_TO_ENTITY_MAP);
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List<Map<String, Object>> list = criteria.list();
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for (Map<String, Object> map : list) {
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Long id = (Long) map.get("id");
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Date updated = (Date) map.get("updated");
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Long statusId = (Long) map.get("status_id");
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FeedEntry entry = new FeedEntry();
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entry.setId(id);
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entry.setUpdated(updated);
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FeedEntryStatus status = new FeedEntryStatus();
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status.setId(statusId);
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status.setEntryUpdated(updated);
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status.setEntry(entry);
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status.setSubscription(sub);
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set.add(status);
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}
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}
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List<FeedEntryStatus> placeholders = set.asList();
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int size = placeholders.size();
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if (size < offset) {
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return Lists.newArrayList();
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}
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placeholders = placeholders.subList(Math.max(offset, 0), size);
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List<FeedEntryStatus> statuses = null;
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if (onlyIds) {
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statuses = placeholders;
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} else {
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statuses = Lists.newArrayList();
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for (FeedEntryStatus placeholder : placeholders) {
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Long statusId = placeholder.getId();
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FeedEntry entry = em.find(FeedEntry.class, placeholder.getEntry().getId());
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statuses.add(handleStatus(statusId == null ? null : findById(statusId), placeholder.getSubscription(), entry));
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}
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statuses = lazyLoadContent(includeContent, statuses);
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}
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return statuses;
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}
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@SuppressWarnings("unchecked")
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public UnreadCount getUnreadCount(FeedSubscription subscription) {
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UnreadCount uc = null;
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Criteria criteria = buildSearchCriteria(subscription, true, null, null, -1, -1, null, null);
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ProjectionList projection = Projections.projectionList();
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projection.add(Projections.rowCount(), "count");
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projection.add(Projections.max(FeedEntry_.updated.getName()), "updated");
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criteria.setProjection(projection);
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criteria.setResultTransformer(Transformers.ALIAS_TO_ENTITY_MAP);
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List<Map<String, Object>> list = criteria.list();
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for (Map<String, Object> row : list) {
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Long count = (Long) row.get("count");
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Date updated = (Date) row.get("updated");
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uc = new UnreadCount(subscription.getId(), count, updated);
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}
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return uc;
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}
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private List<FeedEntryStatus> lazyLoadContent(boolean includeContent, List<FeedEntryStatus> results) {
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if (includeContent) {
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for (FeedEntryStatus status : results) {
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Models.initialize(status.getSubscription().getFeed());
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Models.initialize(status.getEntry().getContent());
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}
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}
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return results;
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}
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private void orderStatusesBy(CriteriaQuery<?> query, Path<FeedEntryStatus> statusJoin, ReadingOrder order) {
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orderBy(query, statusJoin.get(FeedEntryStatus_.entryUpdated), order);
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}
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private void orderBy(CriteriaQuery<?> query, Path<Date> date, ReadingOrder order) {
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if (order != null) {
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if (order == ReadingOrder.asc) {
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query.orderBy(builder.asc(date));
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} else {
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query.orderBy(builder.desc(date));
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}
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}
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}
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protected void setTimeout(Query query) {
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setTimeout(query, applicationSettingsService.get().getQueryTimeout());
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}
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public int deleteOldStatuses(Date olderThan, int limit) {
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Query query = em.createNamedQuery("Statuses.deleteOld");
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query.setParameter("date", olderThan);
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query.setMaxResults(limit);
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return query.executeUpdate();
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}
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}
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