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289 lines
12 KiB
Java
289 lines
12 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 org.apache.commons.lang.StringUtils;
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import org.apache.commons.lang.builder.CompareToBuilder;
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import org.hibernate.Criteria;
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import org.hibernate.SessionFactory;
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import org.hibernate.criterion.Conjunction;
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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.CommaFeedConfiguration;
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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.FeedEntryStatus;
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import com.commafeed.backend.model.FeedEntryTag;
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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.QFeedEntry;
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import com.commafeed.backend.model.QFeedEntryContent;
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import com.commafeed.backend.model.QFeedEntryStatus;
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import com.commafeed.backend.model.QFeedEntryTag;
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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.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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import com.google.common.collect.Ordering;
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import com.mysema.query.jpa.hibernate.HibernateQuery;
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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 String ALIAS_TAG = "tag";
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private FeedEntryDAO feedEntryDAO;
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private FeedEntryTagDAO feedEntryTagDAO;
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private CommaFeedConfiguration config;
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private QFeedEntryStatus status = QFeedEntryStatus.feedEntryStatus;
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public FeedEntryStatusDAO(SessionFactory sessionFactory, FeedEntryDAO feedEntryDAO, FeedEntryTagDAO feedEntryTagDAO,
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CommaFeedConfiguration config) {
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super(sessionFactory);
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this.feedEntryDAO = feedEntryDAO;
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this.feedEntryTagDAO = feedEntryTagDAO;
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this.config = config;
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}
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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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CompareToBuilder builder = new CompareToBuilder();
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builder.append(o2.getEntryUpdated(), o1.getEntryUpdated());
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builder.append(o2.getId(), o1.getId());
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return builder.toComparison();
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};
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};
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private static final Comparator<FeedEntryStatus> STATUS_COMPARATOR_ASC = Ordering.from(STATUS_COMPARATOR_DESC).reverse();
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public FeedEntryStatus getStatus(User user, FeedSubscription sub, FeedEntry entry) {
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List<FeedEntryStatus> statuses = newQuery().from(status).where(status.entry.eq(entry), status.subscription.eq(sub)).list(status);
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FeedEntryStatus status = Iterables.getFirst(statuses, null);
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return handleStatus(user, status, sub, entry);
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}
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private FeedEntryStatus handleStatus(User user, FeedEntryStatus status, FeedSubscription sub, FeedEntry entry) {
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if (status == null) {
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Date unreadThreshold = config.getApplicationSettings().getUnreadThreshold();
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boolean read = unreadThreshold == null ? false : entry.getUpdated().before(unreadThreshold);
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status = new FeedEntryStatus(user, 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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private FeedEntryStatus fetchTags(User user, FeedEntryStatus status) {
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List<FeedEntryTag> tags = feedEntryTagDAO.findByEntry(user, status.getEntry());
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status.setTags(tags);
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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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HibernateQuery query = newQuery().from(status).where(status.user.eq(user), status.starred.isTrue());
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if (newerThan != null) {
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query.where(status.entryInserted.gt(newerThan));
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}
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if (order == ReadingOrder.asc) {
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query.orderBy(status.entryUpdated.asc(), status.id.asc());
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} else {
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query.orderBy(status.entryUpdated.desc(), status.id.desc());
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}
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query.offset(offset).limit(limit).setTimeout(config.getApplicationSettings().getQueryTimeout());
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List<FeedEntryStatus> statuses = query.list(status);
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for (FeedEntryStatus status : statuses) {
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status = handleStatus(user, status, status.getSubscription(), status.getEntry());
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fetchTags(user, status);
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}
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return lazyLoadContent(includeContent, statuses);
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}
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private Criteria buildSearchCriteria(User user, FeedSubscription sub, boolean unreadOnly, String keywords, Date newerThan, int offset,
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int limit, ReadingOrder order, Date last, String tag) {
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QFeedEntry entry = QFeedEntry.feedEntry;
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QFeedEntryContent content = QFeedEntryContent.feedEntryContent;
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QFeedEntryStatus status = QFeedEntryStatus.feedEntryStatus;
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QFeedEntryTag entryTag = QFeedEntryTag.feedEntryTag;
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Criteria criteria = currentSession().createCriteria(FeedEntry.class, ALIAS_ENTRY);
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criteria.add(Restrictions.eq(entry.feed.getMetadata().getName(), sub.getFeed()));
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if (keywords != null) {
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Criteria contentJoin = criteria.createCriteria(entry.content.getMetadata().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(content.content.getMetadata().getName(), keyword, MatchMode.ANYWHERE));
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or.add(Restrictions.ilike(content.title.getMetadata().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(entry.statuses.getMetadata().getName(), ALIAS_STATUS, JoinType.LEFT_OUTER_JOIN,
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Restrictions.eq(status.subscription.getMetadata().getName(), sub));
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if (unreadOnly && tag == null) {
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Disjunction or = Restrictions.disjunction();
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or.add(Restrictions.isNull(status.read.getMetadata().getName()));
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or.add(Restrictions.eq(status.read.getMetadata().getName(), false));
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statusJoin.add(or);
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Date unreadThreshold = config.getApplicationSettings().getUnreadThreshold();
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if (unreadThreshold != null) {
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criteria.add(Restrictions.ge(entry.updated.getMetadata().getName(), unreadThreshold));
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}
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}
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if (tag != null) {
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Conjunction and = Restrictions.conjunction();
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and.add(Restrictions.eq(entryTag.user.getMetadata().getName(), user));
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and.add(Restrictions.eq(entryTag.name.getMetadata().getName(), tag));
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criteria.createCriteria(entry.tags.getMetadata().getName(), ALIAS_TAG, JoinType.INNER_JOIN, and);
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}
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if (newerThan != null) {
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criteria.add(Restrictions.ge(entry.inserted.getMetadata().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(entry.updated.getMetadata().getName(), last));
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} else {
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criteria.add(Restrictions.lt(entry.updated.getMetadata().getName(), last));
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}
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}
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if (order != null) {
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if (order == ReadingOrder.asc) {
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criteria.addOrder(Order.asc(entry.updated.getMetadata().getName())).addOrder(Order.asc(entry.id.getMetadata().getName()));
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} else {
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criteria.addOrder(Order.desc(entry.updated.getMetadata().getName())).addOrder(Order.desc(entry.id.getMetadata().getName()));
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}
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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 = config.getApplicationSettings().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(User user, List<FeedSubscription> subs, boolean unreadOnly, String keywords,
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Date newerThan, int offset, int limit, ReadingOrder order, boolean includeContent, boolean onlyIds, String tag) {
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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(user, sub, unreadOnly, keywords, newerThan, -1, capacity, order, last, tag);
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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 = feedEntryDAO.findById(placeholder.getEntry().getId());
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FeedEntryStatus status = handleStatus(user, statusId == null ? null : findById(statusId), placeholder.getSubscription(),
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entry);
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status = fetchTags(user, status);
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statuses.add(status);
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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(User user, FeedSubscription subscription) {
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UnreadCount uc = null;
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Criteria criteria = buildSearchCriteria(user, subscription, true, null, null, -1, -1, null, 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(QFeedEntry.feedEntry.updated.getMetadata().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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public List<FeedEntryStatus> getOldStatuses(Date olderThan, int limit) {
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return newQuery().from(status).where(status.entryInserted.lt(olderThan), status.starred.isFalse()).limit(limit).list(status);
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}
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}
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